Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 3956. Отображено 100.
26-04-2012 дата публикации

Vapor processing apparatus

Номер: US20120097269A1
Автор: Ayumu HORIBA, Masakazu Kitamoto
Принадлежит: Honda Motor Co Ltd

A vapor processing apparatus includes a tank-inner-pressure detector, an atmospheric-pressure detector, a canister, a control valve and a controller. The tank-inner-pressure detector is configured to detect tank inner pressure of a fuel tank retaining fuel to be supplied to an engine. The atmospheric-pressure detector is configured to detect atmospheric pressure. The canister is configured to adsorb and collect vapor generated in the fuel tank. The control valve is disposed in a vapor channel connected to the fuel tank. The controller is configured to control opening and closing of the control valve based on a value detected by the tank-inner-pressure detector, a value detected by the atmospheric-pressure detector, and a correction value learned in advance, when in a predetermined state.

Подробнее
Номер записи: 1
24-05-2012 дата публикации

Apparatus having a canister and a component associated with the canister

Номер: US20120125200A1
Автор: Masamitsu Hayakawa, Naohito Buseki, Tsuneyuki Kurata, Yukihiro Kaneda
Принадлежит: Aisan Industry Co Ltd

An apparatus including a canister and an accessory component associated with the canister. The canister may be filled with an adsorption material for adsorbing fuel vapor generated within a fuel tank. A communicating pipe extends downwardly from a housing of the accessory component for communication with the canister. An engaging protrusion is provided on an outer peripheral surface of the housing. An outer peripheral portion of an upper portion of the canister includes a wall portion for engagement with the engaging protrusion.

Подробнее
Номер записи: 2
16-08-2012 дата публикации

Evaporative fuel treatment device

Номер: US20120204842A1
Автор: Shinsuke Kiyomiya
Принадлежит: Toyota Motor Corp

A purge valve and an atmosphere opening valve are closed at a timing for stopping purge, so that a canister is sealed from an atmosphere. Thus, even when purge is stopped, the interior of the canister can be held in a negative pressure state. Therefore, adsorbed fuel does not return to inner depths of pores of an adsorbent, thus maintaining a state where the fuel is present on a surface side of the adsorbent. Thus, when purge is resumed, fuel vapors are swiftly discharged to an intake passage of an internal combustion engine via a purge passage. Thereafter as well, fuel vapors continue to be discharged due to the fuel rising to the surface from the inner depths of the pores of the adsorbent. When purge is thus resumed, fuel vapors are immediately discharged from the canister with no time lag.

Подробнее
Номер записи: 3
04-10-2012 дата публикации

Evaporation system for motorcycle, and motorcycle incorporating the same

Номер: US20120247433A1
Автор: Takeshi Shimura, Yoshinobu Ozaki
Принадлежит: Honda Motor Co Ltd

In a motorcycle including an engine equipped with an inlet system, a crankcase and a cylinder block; and a fuel tank which supplies fuel to the engine, an evaporation system is formed in a compact manner using the layout space above the crankcase. The evaporation system includes a canister which temporarily traps evaporated fuel evaporated inside the fuel tank; a purge device which introduces the evaporated fuel trapped in the canister into the inlet system; and a fresh air filter which filters air introduced to the canister during a purging operation for making the inlet system suction the evaporated fuel. In such evaporation system, the canister is disposed in the rear of the cylinder block and above the crankcase, and the air filter is disposed between the cylinder block and the canister.

Подробнее
Номер записи: 4
11-10-2012 дата публикации

Solenoid valve

Номер: US20120255639A1
Автор: Hirofumi Onodera, Mitsuyuki Kobayashi
Принадлежит: Denso Corp

First and second valve members are received in a valve receiving chamber, which is connected to an inlet passage and an outlet passage. First and second valve seats are annular and are formed at a connection of the valve receiving chamber to the outlet passage. The second valve member is lifted away from the second valve seat synchronously with lift movement of the first valve member upon energization of an electromagnetic drive arrangement when a force, which is determined based on an applied pressure force applied to the second valve member by a differential pressure between a pressure of the inlet passage and a pressure of the outlet passage and urging forces of the first and second urging members, is smaller than an electromagnetic attractive force.

Подробнее
Номер записи: 5
21-02-2013 дата публикации

Hydrocarbon storage canister

Номер: US20130042838A1
Автор: Mark Edward Hipp, Russell Randall Pearce
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A system for a vehicle is provided herein. The system includes a fuel vapor canister comprising a shell, a compression plate within the shell and an end cap. The end cap includes a double sided spring interface and a double sided shell sealing surface having double sided identical grooves, only one of which is sealed to the shell. The system further includes a spring coupled to the compression plate and only one spring interface.

Подробнее
Номер записи: 6
09-05-2013 дата публикации

Method and system for fuel vapor control

Номер: US20130112176A1
Автор: Aed Mohammad Dudar, Darrell Erick Butler, Mark W. Peters, Robert Roy Jentz
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for generating sufficient vacuum to enable a leak detection routine. While a fuel tank pressure is within mechanical limits, fuel vapors are purged from a canister to an engine with an isolation valve open to generate a desired level of vacuum in the fuel tank. Thereafter, the fuel tank is isolated and leak detection is performed concurrent to the purging.

Подробнее
Номер записи: 7
22-08-2013 дата публикации

METHOD AND APPARATUS FOR OPERATING A TANK VENTILATION SYSTEM

Номер: US20130213366A1
Автор: Weigl Manfred
Принадлежит: Continental Automotive GmbH

The tank ventilation system has an adsorption vessel, a regeneration duct and a pump. The adsorption vessel captures and temporarily stores fuel vapors emerging from a fuel tank. A purge air flow can flow through the adsorption vessel. The regeneration duct connects the adsorption vessel to an intake duct. In the regeneration duct there is arranged a pump designed to draw the purge air out of the adsorption vessel and admix the purge air to intake air in the intake duct. A density of the purge air which that flows in the regeneration duct is determined. Furthermore, a purge air mass flow flowing in the regeneration duct is determined as a function of the density of the purge air and a predefined pump characteristic of the pump. 114.-. (canceled)15. A method for operating a tank ventilating system having an adsorption container configured to capture and buffer fuel vapors from a fuel tank , wherein a purge airflow flows through the adsorption container , a regeneration duct that connects the adsorption container to an intake duct , and a pump arranged in the regeneration duct configured to draw purge air out of the adsorption container and add it to intake air in the intake duct , the method comprising:determining a density of the purge air that flows in the regeneration duct; anddetermining a purge air mass flow that flows in the regeneration duct based at least in part on the density of the purge air and a predefined pump characteristic of the pump.16. The method as claimed in claim 15 , wherein the density of the purge air that flows in the regeneration duct is determined as a function of at least one of:a detected hydrocarbon concentration of the purge air,a temperature of the intake air,a temperature of ambient air that flows into the adsorption container, anda detected pressure difference in the regeneration duct.17. The method as claimed in claim 15 , further comprisingdetecting a rotational speed of the pump,wherein the purge air mass flow is determined based ...

Подробнее
Номер записи: 8
12-09-2013 дата публикации

FUEL TANK

Номер: US20130233286A1
Автор: Kimoto Junya
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

The present invention enables a canister in a fuel tank with the canister to be separately subjected to a product inspection and enables the canister to be replaced. 15-. (canceled)6. A fuel tank comprising:a tank body configured by joining a plurality of shells to each other; anda canister configured to enable adsorption of fuel vapor generated in the tank body,wherein, on an inner wall surface of one of the shells that constitute the tank body, an engaging portion formed to be integrated with the shell is provided, andthe canister is configured to be mounted to an inside of the tank body by engaging an engaged portion of the canister with the engaging portion.7. The fuel tank according to claim 6 ,wherein a vapor passage which guides the fuel vapor generated in the tank body to the canister in the tank body, and an inflow regulating valve which is provided in the vapor passage and prevents liquid fuel in the tank body from flowing into the canister are integrated with the canister.8. The fuel tank according to claim 6 ,wherein, when the engaged portion of the canister is engaged with the engaging portion formed on the inner wall surface of the shell, an atmosphere port and a purge port of the canister are configured to be respectively inserted into an atmosphere port connection portion and a purge port connection portion which are formed in the shell so as to be connected.9. The fuel tank according to claim 6 ,wherein the plurality of shells include an upper shell that constitutes an upper portion of the tank body and a lower shell that forms a lower portion of the tank body, andthe canister is mounted to an inside of the upper shell at a position higher than an upper limit position of a liquid level of the fuel. The present invention relates to a fuel tank which includes a task body configured by joining a plurality of shells to each other, and a canister configured to enable adsorption of fuel vapor generated is the tank body.A technique related to the tank ...

Подробнее
Номер записи: 9
19-09-2013 дата публикации

SADDLE-TYPE VEHICLE

Номер: US20130240281A1
Автор: Fujihara Kazuo, Inaoka Hiroshi, Takigawa Toshinao, Yamanishi Teruhide
Принадлежит: HONDA MOTOR CO., LTD.

A saddle-type vehicle is provided with: a seat on which a driver sits; a fuel tank positioned in front of the seat; an engine positioned below the fuel tank and having a crankcase and a cylinder projecting upward from a front of the crankcase; and a fuel vapor passage that is connected to the fuel tank and emits evaporated fuel in the fuel tank to an outside of the fuel tank. At least a part of the fuel vapor passage passes behind the cylinder. The fuel vapor passage is connected to the crankcase at a portion in a rear side of the cylinder and opens toward oil in the engine. 1. A saddle-type vehicle comprising:a seat on which a driver is seated;a fuel tank disposed in front of the seat;an engine disposed below the fuel tank and including a crankcase and a cylinder protruding upward from a front portion of the crankcase; anda fuel vapor passage connected to the fuel tank and configured to discharge evaporated fuel in the fuel tank to an outside of the fuel tank,wherein at least a part of the fuel vapor passage passes behind the cylinder, and the fuel vapor passage is connected to the crankcase at a portion in a rear side of the cylinder and opens toward oil in the engine.2. The saddle-type vehicle according to claim 1 , further comprising:an intake device extending rearward from the cylinder and including an inlet pipe, a throttle body, a connecting tube, and an air cleaner box; andan air introduction passage connecting part provided in a middle of the fuel vapor passage and connected to an air introduction passage for introducing air into the fuel vapor passage,wherein the air introduction passage connecting part is placed below the fuel tank and also in front of the air cleaner box.3. The saddle-type vehicle according to claim 2 , further comprising:a first check valve provided in a middle of the fuel vapor passage and configured to stop a flow from the engine side toward the fuel tank side,wherein the air introduction passage connecting part and the first check ...

Подробнее
Номер записи: 10
03-10-2013 дата публикации

INTERNAL COMBUSTION ENGINE WITH IMPROVED TANK CLEANING

Номер: US20130255645A1
Автор: Grass Philippe, Weigl Manfred
Принадлежит:

An internal combustion engine having a fuel tank, a fuel vapor store for storing fuel vapors that escape from the fuel tank, having a connecting line between the fuel vapor store and an air intake tract to conduct fuel vapors from the fuel vapor store into the air intake tract during a regeneration phase, a valve arranged in the connecting line, an aeration line for the fuel vapor store, and having a valve arranged in the aeration line for controlling the aeration of the fuel vapor store. A purge air pump arranged in the aeration line is integrated into the valve unit for controlling the aeration of the fuel vapor store. Effective purging or regeneration of the fuel vapor store is attained even when no negative pressure or only a low negative pressure is provided by the air intake tract. 17-. (canceled)8. An internal combustion engine comprising:an air intake section of the internal combustion engine;a fuel tank;a fuel vapor store coupled to the fuel tank configured to store fuel vapors from the fuel tank;a connecting line between the fuel vapor store and the air intake section of the internal combustion engine configured to pass fuel vapors from the fuel vapor store to the air intake section;a valve arranged in the connecting line;an air admission line for the fuel vapor store; anda valve unit, having a valve body and a seat, arranged in the air admission line, and configured to control admission of air into the to the fuel vapor store;a purge air pump configured to supply purge air to the fuel vapor store arranged in the air admission line for the fuel vapor store, the purge air pump integrated into the valve unit for controlling the admission of air to the air admission line and the fuel vapor store;a common housing for the valve unit arranged in the air admission line and the purge air pump; anda control element of the valve unit configured to raise the valve body mechanically from the seat to vent the fuel tank,wherein the purge air pump is integrated into the ...

Подробнее
Номер записи: 11
10-10-2013 дата публикации

TRAP CANISTER FOR ADSORBING FUEL VAPOR

Номер: US20130263741A1
Автор: Kosugi Ryuji, MANI Takashi
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

Embodiments of the invention are directed towards a trap canister for adsorbing fuel vapor contained in breakthrough gas discharged from a main adsorbent canister. The main adsorbent canister is connected to a fuel tank has a case defining an adsorption chamber therein and an adsorbent filled in the adsorption chamber. The case has a first end open to the atmosphere and a second end for introducing breakthrough gas into the adsorption chamber. The adsorbent filled in the adsorption chamber adsorbs the fuel vapor contained in the breakthrough gas. The trap canister further has a bypass path for bypassing the adsorption chamber and a valve configured to block the bypass path and to allow for opening during refueling. This prevents the fuel vapor from flowing into the atmosphere during normal operation while also decreasing pressure loss during refueling. 1. A trap canister for adsorbing fuel vapor contained in a breakthrough gas discharged from a main adsorbent canister which is connected to a fuel tank , comprising:a case defining an adsorption chamber therein and having a first end open to the atmosphere and a second end for introducing the breakthrough gas into the adsorption chamber;an adsorbent filled in the adsorption chamber and being capable of adsorbing and desorbing the fuel vapor contained in the breakthrough gas;a bypass path for bypassing the adsorption chamber; anda valve configured to block the bypass path and which can open during refueling.2. The trap canister according to claim 1 , further comprisinga negative pressure generator configured to generate negative pressure by using gas Flow in the bypass path during refueling;wherein the valve is composed of a diaphragm valve configured to be opened by pressure of the gas flowing through the bypass path and wherein the negative pressure generator communicates with the diaphragm valve in order to cause the negative pressure to act on the diaphragm valve.3. The trap canister according to claim 1 , wherein ...

Подробнее
Номер записи: 12
17-10-2013 дата публикации

VAPOR FUEL TREATMENT APPARATUS

Номер: US20130269661A1
Автор: INOGUCHI Tetsunori, Inoue Masaomi, Ooiwa Hidetoshi, SENDA Takashi, SHIRAI Kosuke
Принадлежит:

A control part conducts a pulse width modulation control for a first valve and a second valve in a manner that a sum of a first flow rate of fluid flowing through a first passage and a second flow rate of fluid flowing through a second passage agrees with a target flow rate. When the target flow rate is less than a sum of the maximum of the first flow rate and the maximum of the second flow rate, the control part controls a control timing of a first signal driving the first valve and a control timing of a second signal driving the second valve to be different from each other. 1. A vapor fuel treatment apparatus including a canister which adsorbs vapor fuel generated in a fuel tank , the vapor fuel adsorbed by the canister being introduced into an internal combustion engine via an intake pipe , the vapor fuel treatment apparatus comprising: a first valve component which reciprocates to open or close the first passage, and', 'a first electromagnetism actuator which drives the first valve component in a valve opening direction when a first driving command signal having a rectangle pulse form is input;, 'a first electromagnetism drive valve arranged in a first passage having a first end connected to the canister and a second end connected to the intake pipe, the first electromagnetism drive valve having'} a second valve component which reciprocates to open or close the second passage, and', 'a second electromagnetism actuator which drives the second valve component in a valve opening direction when a second driving command signal having a rectangle pulse form is input;, 'a second electromagnetism drive valve arranged in a second passage having a first end connected to the canister and a second end connected to the intake pipe, the second electromagnetism drive valve having'}a target flow rate calculator which calculates a target purge flow rate of fluid including the vapor fuel to be introduced into the internal combustion engine based on an operational status of the ...

Подробнее
Номер записи: 13
31-10-2013 дата публикации

SENSING DEVICE FOR CANISTERS

Номер: US20130283896A1
Автор: Kayanuma Kazuo, Kurahashi Masaru, Matsuzawa Naoki, Nakano Masaru, Tooyama Makoto
Принадлежит:

Sensing device for canister has canister sensor that detects state of activated carbon filling an inside of casing of the canister. Peripheries of temperature sensing element and current application unit of the canister sensor which are arranged in the casing are covered in non-conductive thick insulating material Root portion which is covered in the insulating material of heat transfer plate having high heat conductivity is arranged with the root portion being adjacent to the temperature sensing element in order to increase sensor sensitivity by increasing heat transfer. Top end portion which protrudes from the insulating material of the heat transfer plate is exposed to the inside of the casing Insulating layer is formed at least on surface of the root portion of the heat transfer plate by surface treatment. 18-. (canceled)9. A sensing device for a canister whose casing is filled with an adsorbent to adsorb an evaporated fuel , the sensing device comprising:a canister sensor that detects a state of the adsorbent filling an inside of the casing of the canister, the canister sensor havinga temperature sensing element;a current application unit that applies current to the temperature sensing element;a non-conductive insulating material that covers peripheries of the temperature sensing element and the current application unit which are arranged in the casing; anda heat transfer plate having a heat conductivity that is higher than at least that of the insulating material, and whereina root portion, which is covered in the insulating material, of one end side of the heat transfer plate is arranged with the root portion being adjacent to the temperature sensing element, anda top end portion, which protrudes from the insulating material, of the other end side of the heat transfer plate is exposed to the inside of the casing filled with the adsorbent.10. The sensing device for the canister as claimed in claim 9 , wherein:a pair of the heat transfer plates are provided so ...

Подробнее
Номер записи: 14
31-10-2013 дата публикации

EVAPORATED FUEL TREATING APPARATUS

Номер: US20130284154A1
Автор: Makino Katsuhiko
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

An evaporated fuel treating apparatus, comprising a passage allowing circulation of fluid inside, a tank port and a purge port at one end of the passage, and an atmospheric port at the other end of the passage, and provided with a plurality of adsorption chambers each filled with granular activated carbon or crushed activated carbon in the passage, and a support member set between a first adsorption chamber located closest to the atmospheric port in the plurality of adsorption chambers and a second adsorption chamber located on the tank port side of the first adsorption chamber in the plurality of adsorption chambers, to space the first and second adsorption chambers apart from each other, and at least a part of the support member can adsorb evaporated fuel components. With this configuration, evaporated fuel components escaping to the outside through the atmospheric port are reduced. 1. An evaporated fuel treating apparatus whereina passage is formed to circulate fluid inside, a tank port and a purge port are formed at one end of said passage, and an atmospheric port is formed at another end of said passage;a plurality of adsorption chambers which are each filled with one of granular activated carbon and crushed activated carbon are provided in said passage;a support member is set between a first adsorption chamber, which is located closest to the atmospheric port, of said plurality of adsorption chambers and a second adsorption chamber, which is located on the tank port side of said first adsorption chamber, of said plurality of adsorption chambers, to space said first and second adsorption chambers apart from each other; and,at least one part of said support member can adsorb an evaporated fuel component.2. The evaporated fuel treating apparatus according to claim 1 , wherein an amount of evaporated fuel component adsorbed per unit space volume of a part having adsorption capability of said support member is smaller than an amount of evaporated fuel component ...

Подробнее
Номер записи: 15
14-11-2013 дата публикации

CANISTER EQUIPPED WITH HEATER

Номер: US20130298878A1
Автор: Bae Hyung-Jun, Choi Joon Young, Hwang Tae Kyu, KIM Hyun Ki
Принадлежит: KOREA FUEL-TECH CORPORATION

The invention provides a canister for reducing emissions of fuel gas. Fuel gas absorbed onto active carbon inside a canister can be easily desorbed from the active carbon and then flow into canister in the engine. The canister, which is combined with fuel tank and throttle pipe for absorption and desorption of fuel gas generated in fuel tank, has following components: a fuel tank port and an air inlet formed at the upper end of one side; a junction pipe arranged in upper parts of this side; a canister body with a plurality of convex is formed; a junction configured to fit the junction pipe on the canister body formed at upper end of the canister body and a plurality of hooks connected with a plurality of convexes on the canister body are provided; air inlet set on an upper side, a heater with a heater module is set inside. 1. A canister for use with a fuel tank and a throttle pipe to absorb fuel gas from the fuel tank , comprising:a fuel tank port and an air inlet disposed at an upper end of one side of the canister;a junction pipe and a canister body with a plurality of junction convexes are arranged on the one side;a junction configure to fit the junction pipe is formed at an upper end of the canister body, wherein the junction is configured with a plurality of hooks for connection with a plurality of junction convexes on the canister body;an air inlet is deployed at the upper end of the canister body; anda heater connected with a heater module is set inside the canister.2. The canister of claim 1 , further comprising a groove on an outer side of junction pipe for inserting a gland strip.3. The canister of claim 1 , wherein the heater comprises an opening set on a lower side of the heater and a heater body with junction holes to hold the heater module claim 1 , wherein the heater module is horizontally inserted into a junction hole in an upper part on one side of the heater body.4. The canister of claim 3 , wherein the heater module comprises a junction plate ...

Подробнее
Номер записи: 16
28-11-2013 дата публикации

EVAPORATED FUEL TREATMENT APPARATUS

Номер: US20130312712A1
Автор: Yamamoto Norihisa
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

In an evaporated fuel treatment apparatus mounted laterally, in order to effectively utilize adsorbent of an upper portion in an adsorption chamber of the evaporated fuel treatment apparatus, the evaporated fuel treatment apparatus comprises: one or more adsorption chambers filled with the adsorbent that adsorbs and desorbs evaporated fuel generated in a fuel tank; a tank port; a purge port; and an atmosphere port, and in the evaporated fuel treatment apparatus, a first filter is provided in a boundary portion between the adsorption chamber located closest to the tank port and the tank port, and an amount of gas, having flowed in the adsorption chamber from the tank port, passing through an upper portion of the first filter is made larger than that of the gas passing through a lower portion thereof. 1. An evaporated fuel treatment apparatus comprising: at least one adsorption chamber filled with adsorbent that adsorbs and desorbs evaporated fuel generated in a fuel tank; a tank port; a purge port; and an atmosphere port , said evaporated fuel treatment apparatus being laterally mounted so that the evaporated fuel moves in a lateral direction in said adsorption chamber ,wherein a first filter is provided in a boundary portion between an adsorption chamber located closest to the tank port in said adsorption chambers and said tank port, and an amount of gas, having flowed in the adsorption chamber from the tank port, passing through an upper portion of the first filter is larger than that of as passing through a lower portion thereof.2. The evaporated fuel treatment apparatus according to claim 1 , wherein an air-flow resistance of an upper portion of said first filter is made smaller than that of a lower portion thereof claim 1 , and the amount of the gas claim 1 , having flowed in the adsorption chamber from the tank port claim 1 , passing through the upper portion of the first filter is made larger than that of the gas passing through the lower portion thereof.3. ...

Подробнее
Номер записи: 17
05-12-2013 дата публикации

EVAPORATED FUEL TREATMENT APPARATUS

Номер: US20130319247A1
Автор: Yamamoto Norihisa
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

In an evaporated fuel treatment apparatus, for achieving common use of a casing, having a simple structure, the evaporated fuel treatment apparatus comprising: a casing having one or more adsorption chambers filled with an adsorbent that adsorbs and desorbs evaporated fuel generated in a fuel tank or the like; a tank port; a purge port; and an atmosphere port, and the casing is configured by directly connecting a first member that constitutes one end of the casing, and is provided with at least the tank port and the purge port, a second member that constitutes the other end thereof, and one or more cylindrical members provided between the first member and the second member. 1. An evaporated fuel treatment apparatus comprising: a casing having at least one adsorption chamber filled with an adsorbent that adsorbs and desorbs evaporated fuel generated in a fuel tank or the like; a tank port; a purge port; and an atmosphere port , whereinsaid casing is configured by directly connecting a first member that constitutes one end of said casing and includes at least the tank port and the purge port, a second member that constitutes the other end thereof, and at least one cylindrical member provided between the first member and the second member.2. The evaporated fuel treatment apparatus according to claim 1 , wherein a rib is formed on an inner peripheral surface of the cylindrical member in a peripheral direction thereof.3. The evaporated fuel treatment apparatus according to claim 1 , whereina flow path through which the evaporated fuel flows is formed in said casing, anda partition wall that constitutes said flow path is integrally formed in said cylindrical member.4. The evaporated fuel treatment apparatus according to claim 1 , whereina flow path through which the evaporated fuel flows is formed in said casing, andan engagement portion is provided in said cylindrical member, and a partition wall that constitutes said flow path is provided to be engaged with said ...

Подробнее
Номер записи: 18
05-12-2013 дата публикации

Fuel vapor processing apparatus

Номер: US20130319249A1
Автор: Masanobu SHINAGAWA
Принадлежит: Aisan Industry Co Ltd

A fuel vapor processing apparatus may include a container including an atmospheric introduction portion, through which atmospheric air is introduce into the container. An adsorption material may be contained in the container and may be configured to adsorb fuel vapor and to allow the adsorbed fuel vapor to be desorbed from the adsorption material as the atmospheric air introduced into the container flows through the adsorption material. A heater may heat the adsorption material for promoting desorption of fuel vapor and may have a heating value decreasing along a length of the heater in a flow direction of the atmospheric air through the adsorption material for desorption of fuel vapor.

Подробнее
Номер записи: 19
05-12-2013 дата публикации

Venting system, in particular for a fuel tank

Номер: US20130319378A1
Автор: Andreas Pape, Helmut Denz, Manfred Franz, Silke Haag
Принадлежит: ROBERT BOSCH GMBH

In a venting system, in particular for a fuel tank of a motor vehicle, which has a sorption filter for temporarily storing fuel evaporating from the fuel tank and a fluid-conveying conveying device situated between the sorption filter and an air supply or an intake manifold of an internal combustion engine, according to the present system, the conveying device is a bidirectional conveying device which is switchable in a first conveying direction in the direction of the internal combustion engine for regenerating the sorption filter and in a second conveying direction in the direction of the sorption filter for carrying out a fuel tank leak diagnosis.

Подробнее
Номер записи: 20
05-12-2013 дата публикации

VALVE WITH PILOT CONTROL, ESPECIALLY FOR A FUEL VAPOR RETENTION SYSTEM

Номер: US20130319379A1
Автор: GERLICH Torsten, Hettinger Stefan
Принадлежит: A. KAYSER AUTOMOTIVE SYSTEMS GMBH

A valve with a pilot control is provided for a fuel vapor retention system. The valve has a main valve () with a valve body () for opening and closing a fluid passage, a pilot control valve (), which is arranged at the valve body () for opening and closing a channel () arranged in the valve body () and has an elastically deformable diaphragm (), and a plunger () for pressing the diaphragm () against a mouth of the channel () to close the channel () thereby and displacing the valve body () in the closing direction against a valve seat (). 1. A valve , comprising:{'b': 10', '12, 'a main valve () having a valve body () for opening and closing a fluid passage,'}{'b': 20', '12', '14', '12', '22, 'a pilot control valve () is arranged at the valve body () for opening and closing a channel () in the valve body () and having an elastically deformable diaphragm (), and'}{'b': 30', '22', '14', '14', '12', '12', '11, 'a plunger () disposed and configured for pressing the diaphragm () against a mouth of the channel () to close the channel () and for displacing the valve body () in a closing direction in order to press the valve body () against a valve seat ().'}22214. The valve of claim 1 , wherein the diaphragm () is elastically resilient for releasing the opening of the channel () in an unloaded state.31240. The valve of claim 2 , wherein the valve body () is forced into an open position by a spring ().43070. The valve of claim 1 , wherein the plunger () is actuated by an electromagnetic actuator ().522. The valve of claim 1 , wherein the diaphragm () comprises silicone claim 1 , rubber or a fuel-resistant and low-temperature flexible elastomer.6. The valve of claim 5 , wherein the elastomer is fluorosilicone (FVMQ).7121814. The valve of claim 1 , wherein the valve body () comprises a disk () in which the channel () is arranged.8131211. The valve of claim 1 , wherein the valve body further comprises a seal () for sealing the valve body () with respect to the valve seat (). ...

Подробнее
Номер записи: 21
12-12-2013 дата публикации

EVAPORATED FUEL TREATMENT DEVICE

Номер: US20130327303A1
Автор: ARASE Yuji, HORIMATSU Toshinobu, YOSHIDA Hiroyuki
Принадлежит:

An evaporated fuel treatment device including a cylindrical casing body, a granular adsorbent filled in the casing body, an air permeable member stacked on the granular adsorbent, a retainer member stacked on the air permeable member, and a tJooth-shaped positioning retention mechanism disposed between an inner circumferential surface of the casing body and an outer circumferential surface of the retainer member. The tooth-shaped positioning retention mechanism allows the retainer member to hold the air permeable member in a compressively deformed state, enables positioning and retention of the retainer member in an optional position relative to the casing body in a pushing direction of the retainer member, and inhibits displacement of the retainer member in a removal direction of the retainer member. 1. An evaporated fuel treatment device comprising:a cylindrical casing body having one open end;a granular adsorbent filled in the casing body, the granular adsorbent serving to adsorb and desorb evaporated fuel,an air permeable member disposed on a side of the one open end of the casing body in a stacked relation to the granular adsorbent, the air permeable member being made of an elastic molding material,a retainer member disposed on the side of the one open end of the casing body in a stacked relation to the air permeable member, the retainer member being in the form of a grid or a porous plate,a cover member mounted to the one open end of the casing body to close the one open end of the casing body; anda tooth-shaped positioning retention mechanism disposed between an inner circumferential surface of the casing body and an outer circumferential surface of the retainer member,wherein the tooth-shaped positioning retention mechanism allows the retainer member to hold the air permeable member in a compressively deformed state and enables positioning and retention of the retainer member in an optional position relative to the casing body in a pushing direction in which ...

Подробнее
Номер записи: 22
26-12-2013 дата публикации

Canister

Номер: US20130340724A1
Автор: Masaru Nakano, Naoki Matsuzawa, Yuichi Hikita
Принадлежит: Mahle Filter Systems Japan Corp

A canister includes: a first adsorbent chamber; a second absorbent chamber connected to the first adsorbent chamber via a connection passage to constitute a U turn shaped flow passage; a casing having a charge port and a purge port at a terminal section of the first adsorbent chamber and having a drain port at a terminal section of the second adsorbent chamber; an adsorbent filled within the first and second adsorbent chambers; and an adsorption quantity sensor attached onto the casing to position a detection section of the sensor within the adsorbent, wherein a measurement point of the adsorption quantity sensor is arranged at a position nearer to a second terminal section of the second adsorbent chamber than an intermediate point of a flow passage length between a first terminal section at a drain port side of the second adsorbent chamber and the second terminal section at the connection passage side.

Подробнее
Номер записи: 23
09-01-2014 дата публикации

FUEL TANK SYSTEM

Номер: US20140007849A1
Автор: Nagasaku Yuichi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A fuel tank system capable of purging a canister without relying on the action of negative pressure from the engine, thereby giving excellent energy efficiency. Gases in the fuel tank move to a canister when filling up, and any fuel vapor is adsorbed in the canister. Air components are separated from the gases in the fuel tank using a gas separator and discharged and a negative pressure can be induced inside the fuel tank. This negative pressure acts on the canister and purges the canister. 1. A fuel tank system comprising:a fuel tank for holding fuel;a canister capable of adsorbing fuel vapor inside the fuel tank and releasing the fuel vapor;a gas separator that separates air components from gases in the fuel tank and discharges the separated air components externally to the fuel tank;an internal pressure detecting device for detecting internal pressure of the fuel tank; anda switching device for switching between a first state in which the internal pressure of the fuel tank is in a negative pressure state of a negative pressure of a first specific value or lower and it is possible to use the negative pressure to suck fuel vapor that has been adsorbed by the canister into the fuel tank, and a second state in which the internal pressure of the fuel tank is in a positive pressure state of a positive pressure of a second specific value or higher and it is possible to use the positive pressure to cause gas of a gas layer to pass through the gas separator and air components in the gas layer to be externally discharged from the gas separator.2. The fuel tank system of wherein the switching device comprises:a communication pipe with one end connected to the fuel tank, an intermediate section that branches at a branching section, and the other ends respectively connected to the canister and the gas separator;a discharge pipe for externally discharging air components from the gas separator;a three-way valve provided to the branching section of the communication pipe and ...

Подробнее
Номер записи: 24
16-01-2014 дата публикации

Device for selectively regenerating or performing tank leakage diagnosis of a tank ventilation system

Номер: US20140013944A1
Автор: Andreas Pape, Helmut Denz, Manfred Franz, Silke Haag
Принадлежит: ROBERT BOSCH GMBH

A device for selectively regenerating and performing tank leakage diagnosis of a tank ventilation system has a sorption filter and a pump. The sorption filter is configured to temporarily store fuel evaporating from a fuel tank. The pump is arranged at a fresh-air side of the sorption filter and is connected in fluid-conducting fashion to the sorption filter. The pump is configured to generate a fluid flow to regenerate the sorption filter.

Подробнее
Номер записи: 25
23-01-2014 дата публикации

VALVE ASSEMBLY FOR HIGH-PRESSURE FLUID RESERVOIR

Номер: US20140020663A1
Автор: Mills Vaughn, Pifer Daniel Lee, Sexton Ronald
Принадлежит: EATON CORPORATION

A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value. 1. A valve assembly configured for controlling fluid flow between a first reservoir and a second reservoir , the valve assembly comprising:a valve housing;a relief valve arranged inside the valve housing and configured to open a first fluid flow path inside the valve housing when a pressure inside the first reservoir is above a first predetermined pressure value; anda solenoid assembly arranged inside the valve housing and configured to open a second fluid flow path inside the valve housing when a rate of the fluid flow from the first reservoir to the second reservoir is above a predetermined reference value.2. The valve assembly according to claim 1 , further comprising a flow restrictor arranged inside the valve housing and configured to open a third fluid flow path inside the valve housing when the rate of the fluid flow from the first reservoir to the second reservoir is below the predetermined reference value claim 1 , and when the pressure inside the first reservoir is below a second predetermined pressure value.3. The valve assembly according to claim 2 , wherein the first predetermined pressure value is greater than the second predetermined pressure value.4. The valve assembly according to claim 2 , wherein the solenoid assembly includes an armature configured to selectively open and close the flow restrictor claim 2 , a solenoid spring configured to generate a force sufficient to close the restrictor by displacing the armature claim 2 , and a coil configured to energize the armature claim 2 , overcome the solenoid spring claim 2 , and thereby open the restrictor.5. The valve assembly according to claim 4 , wherein the coil is configured to overcome the solenoid spring when the rate of the ...

Подробнее
Номер записи: 26
30-01-2014 дата публикации

FUEL VAPOR PURGE DEVICE

Номер: US20140026867A1
Автор: HASEGAWA Shigeru, ITOH Tomohiro, TAKAGI Kosei
Принадлежит:

A fuel vapor purge device includes a canister connected to an internal combustion engine and a fuel tank via a purge passage to adsorb and hold a part of fuel vapor, a switch valve connected to the canister and to an atmosphere, and a pump connected to the switch valve via a pump passage and to the atmosphere via an atmosphere passage. The pump is capable of depressurizing or pressurizing an interior of the fuel tank, and the switch valve switches connection of the canister between with the atmosphere and with the pump. The fuel vapor purge device further includes a seal valve provided in the pump passage to open or close the pump passage depending on a pressure in the atmosphere passage. 1. A fuel vapor purge device which purges fuel vapor generated in a fuel tank by introducing the fuel vapor into an internal combustion engine , the fuel vapor purge device comprising:a purge passage connecting the fuel tank and an intake passage through which intake air is introduced into the internal combustion engine;a first canister provided in the purge passage to adsorb and hold a part of the fuel vapor flowing in the purge passage;a purge valve provided in the purge passage near the intake passage to open or close the purge passage;a first pump passage having a first end connected to the first canister;a second pump passage having a first end capable of being connected to a second end of the first pump passage;a third pump passage having a first end capable of being connected to a second end of the second pump passage;a pump connected to a second end of the third pump passage, wherein the pump is capable of depressurizing or pressurizing an interior of the fuel tank through the third pump passage, the second pump passage, the first pump passage, the first canister and the purge passage;a first atmosphere passage having a first end connected to the pump, and a second end open to an atmosphere;a second atmosphere passage having a first end connected to the first atmosphere ...

Подробнее
Номер записи: 27
06-02-2014 дата публикации

Fuel system diagnostics

Номер: US20140033802A1
Автор: Aed Mohammad Dudar, Mark W. Peters, Robert Roy Jentz
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

An emissions control system is provided that comprises a fuel tank, a hydrocarbon filter element, and a three-way valve coupled between the hydrocarbon filter element and the atmosphere. The three-way valve is comprised of three ports, a purge port, a reference port, and a sealed port, and enables identification of degradation of the emissions control system. The arrangement of the ports on the valve enables a simplified testing method that reduces background errors caused by transitioning between various operating positions.

Подробнее
Номер записи: 28
13-02-2014 дата публикации

Canister

Номер: US20140041522A1
Автор: Hiroyuki Yoshida, Junpei Omichi, Takashi Hasumi, Toshinobu Horimatsu, Yuji Arase
Принадлежит: Mahle Filter Systems Japan Corp

A canister is provided with a plurality of adsorbent chambers filled with adsorbent, and the adsorbent chambers are connected together so as to form a U-turn-shaped passage. The canister has a communication chamber through which both end portions of adjacent two adsorbent chambers communicate with each other; a middle chamber formed at the end portion of one of the adjacent two adsorbent chambers, which is positioned at a downstream side of the communication chamber, and connected to the communication chamber through a communication hole; a baffle plate set in the middle chamber with the baffle plate facing to the communication hole so that an incoming air flow from the communication hole strikes against the baffle plate and diffuses in the middle chamber; and a tubular portion protruding in the communication chamber from an opening edge of the communication hole along a longitudinal direction of the one adsorbent chamber.

Подробнее
Номер записи: 29
13-02-2014 дата публикации

Valve assembly for high-pressure fluid reservoir

Номер: US20140041737A1
Автор: Daniel Lee Pifer, Ronald Sexton, Vaughn Mills
Принадлежит: Eaton Corp

A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value.

Подробнее
Номер записи: 30
06-03-2014 дата публикации

Evaporation fuel processing device

Номер: US20140060497A1
Автор: Hiroshi Takamatsu, Junya Kimoto, Ryuji Kosugi, Takanori Akiyama
Принадлежит: Aisan Industry Co Ltd

An evaporation fuel processing device is provide including: a passage; a tank port and a purge port on one end side of the passage; an atmospheric air port on the other end side of the passage; and adsorbent layers filled with adsorbent for evaporation fuel components, provided in the passage; a region provided on an atmospheric air port side of the passage, being constituted of three or more adsorbent layers and separating parts for separating the adjacent adsorbent layers, in which a volume of the adsorbent layer is smaller in the adsorbent layer closer to the atmospheric air port, a volume of the separating part is larger closer to the atmospheric air port, and the volume of the separating part located farthest on a tank port side is larger than that of the adsorbent layer located farthest on the atmospheric air port side.

Подробнее
Номер записи: 31
06-03-2014 дата публикации

EVAPORATION FUEL PROCESSING DEVICE

Номер: US20140060499A1
Автор: Akiyama Takanori, Kimoto Junya, Kosugi Ryuji, Takamatsu Hiroshi
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

The present invention provides an evaporation fuel processing device including: a passage formed inside so as to allow a fluid to flow through the passage; a tank port and a purge port formed on one end side of the passage; an atmospheric air port formed on the other end side of the passage; and adsorbent layers filled with adsorbent which can adsorb evaporation fuel components, the adsorbent layers being provided in the passage, wherein a region which is constituted of three or more adsorbent layers and separating parts for separating the adjacent adsorbent layers, and in which a total volume of the adsorbent layers is set smaller than a total volume of the separating parts, is provided on an atmospheric air port side of the passage. 1. An evaporation fuel processing device , comprising:a passage formed inside so as to allow a fluid to flow through the passage;a tank port and a purge port formed on one end side of the passage;an atmospheric air port formed on the other end side of the passage; andadsorbent layers filled with adsorbent which can adsorb evaporation fuel components, the adsorbent layers being provided in the passage;wherein a region, which comprises three or more adsorbent layers and separating parts for separating the adjacent adsorbent layers, and in which a total volume of the adsorbent layers is set smaller than a total volume of the separating parts, is provided on a side of an atmospheric air port of the passage.2. The evaporation fuel processing device according to claim 1 , wherein claim 1 , in the region claim 1 , a total of distances between both end surfaces of the adsorbent layers is set shorter than a total of separation distances between the adjacent adsorbent layers.3. The evaporation fuel processing device according to claim 1 , wherein claim 1 , in the region claim 1 , the separation distance between the adjacent adsorbent layers is set longer in the separating part closer to the atmospheric air port.4. The evaporation fuel processing ...

Подробнее
Номер записи: 32
06-03-2014 дата публикации

CANISTER ARRANGEMENT STRUCTURE OF STRADDLE TYPE VEHICLE

Номер: US20140060955A1
Автор: KONO Sho
Принадлежит: HONDA MOTOR CO., LTD.

An engine supported on a main frame with an air cleaner disposed above a cylinder head. Air is supplied from an upper direction via an intake passage. A canister is supported above a crankcase and on the side surface of the main frame. A purge pipe connects between a front end portion of the canister and the intake passage. The purge pipe has a short length and includes a purge control valve in an intermediate portion and includes a first purge pipe for connecting the purge control valve with the canister, and a second purge pipe for connecting the purge control valve with the intake passage. Evaporated fuel from a fuel tank is supplied to the canister via a discharge pipe. A drain tube is connected at the rear end of the canister and at the lower position relative to the connecting portion of the first purge pipe. 1. A canister arrangement structure of a straddle vehicle having a body frame including a main frame extending rearwardly from a head pipe , comprising:an engine supported on a lower portion of said main frame, said engine including a crankcase;a cylinder extending substantially horizontally in a forward direction from the front portion of the crankcase and a cylinder head attached to the front portion of the cylinder;a fuel tank supported on an upper portion of said main frame;an intake passage for connecting between an air cleaner supported by said main frame and an intake port of said cylinder head;a canister for storing evaporated fuel within said fuel tank via a discharge pipe and for supplying said evaporated fuel to said intake passage via a purge pipe;said canister being disposed above said engine as well as behind said intake passage; anda pipe connecting portion wherein said purge pipe is connected and is disposed in a front portion of said canister.2. The canister arrangement structure of the straddle vehicle according to claim 1 , wherein said main frame is inclined obliquely downwardly in a rearward direction along a vehicle body center from ...

Подробнее
Номер записи: 33
05-01-2017 дата публикации

GRID AND CANISTER USING THE GRID

Номер: US20170001141A1
Автор: Kishida Yosuke, Minezawa Shogo
Принадлежит:

A grid that includes a plurality of holes perforated therein such that an aperture ratio of the grid increases from the center toward the periphery of the grid. The grid holds absorbents filled inside a filling chamber of a canister having an opening, and keeps the absorbents inside the filling chamber. 1. A grid comprising:a plurality of holes perforated therein such that an aperture ratio of the grid increases from a center toward a periphery of the grid,wherein the grid holds absorbents filled inside a filling chamber of a canister having an opening, and keeps the absorbents inside the filling chamber.2. The grid according to wherein the plurality of holes comprises:a plurality of small holes perforated around the center, anda plurality of large holes perforated along a peripheral edge outside an area where the plurality of small holes is perforated.3. The grid according to wherein the plurality of holes comprises:holes that are arranged radially from the center, wherein the closer the holes are to the center, the smaller the holes are.4. The grid according to claim 1 , wherein the aperture ratio at the center is zero.5. A canister that holds the absorbents inside the filling chamber by using the grid according to .6. The canister according to claim 5 , wherein the absorbents comprise granular activated carbon.7. The canister according to claim 5 , further comprising a spring configured to bias the grid within the canister.8. The canister according to claim 6 , being configured for receiving evaporated fuel from an internal combustion engine.9. The grid according to claim 1 , wherein the grid comprises a metal member in which the plurality of holes is perforated.10. The grid according to claim 9 , wherein the metal member comprises a disc shape.11. The grid according to claim 9 , wherein the metal member comprises a square shape.12. The grid according to claim 9 , wherein the plurality of holes is defined in the metal member by punching.13. The grid according to ...

Подробнее
Номер записи: 34
05-01-2017 дата публикации

Fuel Control Systems And Methods For Preventing Over Fueling

Номер: US20170002755A1
Автор: Jeffrey Scott, Majors Steven Ward, WEST Jason
Принадлежит:

A fuel control system for an engine includes a closing module and a purge control module. The closing module commands closing of a purge valve in response an engine speed transitioning from greater than a predetermined speed to less than the predetermined speed while the purge valve is in an open state. The predetermined speed is less than a predetermined target speed of the engine and is greater than zero. The purge control module transitions the purge valve from the open state to a closed state in response to the command. 1. A fuel control system for an engine , comprising:a closing module that commands closing of a purge valve in response an engine speed transitioning from greater than a predetermined speed to less than the predetermined speed while the purge valve is in an open state,wherein the predetermined speed is less than a predetermined target speed of the engine and is greater than zero; anda purge control module that transitions the purge valve from the open state to a closed state in response to the command.2. The fuel control system of wherein the predetermined target speed is a predetermined idle engine speed.3. The fuel control system of wherein the predetermined speed is at least five percent less than the predetermined idle engine speed.4. The fuel control system of wherein the closing module commands the closing of the purge valve in response to the engine speed transitioning from greater than the predetermined speed to less than the predetermined speed while both (i) the purge valve is in an open state that the purge valve is in the open state and (ii) that an output of an exhaust gas oxygen sensor indicates that an air/fuel mixture supplied to the engine is fuel rich relative to a target air/fuel mixture.5. The fuel control system of further comprising a fuel control module that periodically toggles the target air/fuel mixture between fuel rich and fuel lean and that controls fueling of the engine based on the target air/fuel mixture.6. The ...

Подробнее
Номер записи: 35
05-01-2017 дата публикации

FUEL VAPOR PROCESSING APPARATUS

Номер: US20170002770A1
Автор: Kosugi Ryuji
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

A fuel vapor processing apparatus may include a first adsorption chamber, a second adsorption chamber and a third adsorption chamber that are arranged in series with respect to a flow of gas. A ratio of a length to a diameter of the second adsorption chamber may be larger than a ratio of a length to a diameter of the first adsorption chamber. A filling ratio of an adsorbent within the second adsorption chamber may be smaller than a filling ratio of an adsorbent within the first adsorption chamber. 1. A fuel vapor processing apparatus , comprising:a main adsorption chamber communicating with a tank port and a purge port and containing a first adsorbent;an adsorption region disposed on a side of an atmospheric port with respect to the main adsorption chamber; the adsorption region includes a low filling-ratio adsorption chamber containing a second adsorbent, and an atmosphere-side adsorption chamber containing a third adsorbent, the atmosphere-side adsorption chamber communicating with the atmospheric port, and the low filling-ratio adsorption chamber being disposed between the atmosphere-side adsorption chamber and the main adsorption chamber;', 'a volumetric capacity of the adsorption region is smaller than a volumetric capacity of the main adsorption chamber;', 'a ratio of a length of the low filling-ratio adsorption chamber in a direction of flow of fuel vapor to a diameter of a circle having an area equivalent to a cross sectional area of the low filling-ratio adsorption chamber perpendicular to the direction of flow of the fuel vapor is larger than a ratio of a length of the main adsorption chamber in a direction of flow of the fuel vapor to a diameter of a circle having an area equivalent to a cross sectional area of the main adsorption chamber perpendicular to the direction of flow of the fuel vapor;', 'a filling ratio of the second adsorbent within the low filling-ratio adsorption chamber is smaller than a filling ratio of the first adsorbent within the main ...

Подробнее
Номер записи: 36
05-01-2017 дата публикации

Fuel vapor processing apparatus

Номер: US20170002771A1
Автор: Ryuji Kosugi
Принадлежит: Aisan Industry Co Ltd

A fuel vapor processing apparatus may include a first adsorption chamber, a second adsorption chamber and a third adsorption chamber that are connected in series with respect to a flow of gas. A ratio of a length to a diameter of the second adsorption chamber may be larger than that of the first adsorption chamber. A cross sectional area of each of the second and third adsorption chambers may be smaller than a cross sectional area of the first adsorption chamber.

Подробнее
Номер записи: 37
02-01-2020 дата публикации

Purge system

Номер: US20200003163A1
Автор: Ingo Niemeyer, Ludger BUESCHER
Принадлежит: Hella GmbH and Co KGaA

A purge system of a vehicle for purging C—H-gas of a tank system to an induction line of a combustion engine of the vehicle. The purge system includes a purge unit, a control unit for operating the purge unit and gas connection lines, wherein a first line end of the gas connection lines is configured for connecting the purge unit with the tank system and a second line end of the gas connection lines is configured for connecting the purge unit with the induction line. The purge system also includes a C—H-sensor for measuring a C—H-gas concentration of a fluid volume flow that flows from the first line end towards the second line end. A vehicle and a method for operating a combustion engine system of a vehicle with a purge system is also provided.

Подробнее
Номер записи: 38
04-01-2018 дата публикации

CONNECTOR WITH SENSOR

Номер: US20180003583A1
Автор: ASAI Takahiro, Sakaguchi Yusuke, Takahashi Yuki
Принадлежит:

A connector includes a resin-made connector body and a pressure sensor. The connector body includes a first main tubular part that is connected to a first pipe, a second main tubular part that is connected to a second pipe, and a sensor mounting part. The first main tubular part and the second main tubular part connect with each other to form an angle. The sensor mounting part includes: a tubular intake part that is formed in line with a line extending from one of the first main tubular part and the second main tubular part and has a bottom face; and a sensor mounting seat that is capable of being mounted with the pressure sensor and communicates with a peripheral-surface opening of the tubular intake part. 1. A connector comprising:a connector body made of resin, the connector body comprising a first main tubular part configured to be connected to a first pipe, a second main tubular part configured to be connected to a second pipe, and a sensor mounting part; anda pressure sensor configured to detect pressure of fluid that passes through the connector body, the pressure sensor being mounted to the sensor mounting part,wherein the first main tubular part and the second main tubular part connect with each other to form an angle, and wherein the sensor mounting part comprises:a tubular intake part formed in line with a line extending from one of the first main tubular part and the second main tubular part, the tubular intake part including a bottom face; anda sensor mounting seat that is capable of being mounted with the pressure sensor, the sensor mounting seat communicating with a peripheral-surface opening of the tubular intake part.2. The connector according to claim 1 , wherein:the tubular intake part further includes a small-diameter part having a passage that is smaller in cross-sectional area than a passage of the one of the first main tubular part and the second main tubular part; andthe passage of the small-diameter part of the tubular intake part is ...

Подробнее
Номер записи: 39
07-01-2021 дата публикации

CHARGE FORMING DEVICE WITH ELECTRICALLY ACTUATED VAPOR SEPARATOR VENT VALVE

Номер: US20210003099A1
Автор: Burns Gary J., Sayers Albert L.
Принадлежит:

In at least some implementations, a charge forming device for a combustion engine includes a housing, a throttle valve and a vent valve. The housing has an inlet chamber in which a supply of fuel is received, a vent passage communicating with the inlet chamber and a throttle bore with an inlet through which air is received. The throttle valve is carried by the housing and has a valve head movable relative to the throttle bore to control fluid flow through the throttle bore. And the vent valve is electrically actuated, carried by the housing and has a valve element that is movable between an open position wherein fluid may flow from the inlet chamber through the vent passage and a closed position where fluid is prevented or inhibited from flowing out of the inlet chamber through the vent passage. 1. A charge forming device for a combustion engine , comprising:a housing having an inlet chamber in which a supply of fuel is received, a vent passage communicating with the inlet chamber and a throttle bore with an inlet through which air is received;a throttle valve carried by the housing with a valve head movable relative to the throttle bore to control fluid flow through the throttle bore; anda vent valve carried by the housing and having a valve element that is movable between an open position wherein fluid may flow from the inlet chamber through the vent passage and a closed position where fluid is prevented or inhibited from flowing out of the inlet chamber through the vent passage, the vent valve being electrically actuated.2. The device of wherein the housing includes a body and a cover coupled to the body claim 1 , wherein the vent passage is formed at least partially in the cover and the vent valve is carried by the cover.3. The device of wherein the vent valve is actuated as a function of a pressure within the inlet chamber.4. The device of wherein the vent valve is actuated to maintain a pressure within the inlet chamber of between 0.34 mmHg to 19 mmHg.5. The ...

Подробнее
Номер записи: 40
07-01-2021 дата публикации

SEALING VALVE FOR FUEL VAPOR PROCESSING APPARATUS

Номер: US20210003102A1
Автор: UCHIDA Kimio
Принадлежит:

A valve guide moves back and forth relative to a housing. A valve engages with and slides on the valve guide to open and close a sealing passage of the housing. A valve-side spring is sandwiched between the valve guide and the valve and biases the valve. The valve-side spring has an outer wire portion defining a flat surface at a distal end in an axial direction and that is orthogonal to the axial direction. A pitch between the outer wire portion and an adjacent wire portion adjacent to the outer wire portion is smaller than a pitch between regular wire portions in at least one end of the valve-side spring in the axial direction. The outer wire portion and the adjacent strand portion are in line contact with each other in a circumferential direction. 1. A sealing valve for a fuel vapor processing apparatus provided in a vehicle , the vehicle including an internal combustion engine and a fuel tank , the fuel vapor processing apparatus including a canister configured to adsorb evaporated fuel evaporated in the fuel tank , the sealing valve configured to be provided in a purge pipe that connects the fuel tank to the canister , the sealing valve comprising:a housing;a valve guide configured to convert a rotational force of an actuator into a propulsive force and to move back and forth relative to the housing;a valve connected to the purge pipe and configured to engage with and to slide on the valve guide to open and close a sealing passage of the housing; anda valve-side spring sandwiched between the valve guide and the valve and configured to bias the valve in a direction to close the sealing passage, whereinthe valve-side spring includes a wire element that is in a spiral form and has outer wire portions located at both ends in an axial direction, respectively,each of the outer wire portions has an outer surface located at a distal end in the axial direction and defining a flat surface that is orthogonal to the axial direction,a pitch between the outer wire portion ...

Подробнее
Номер записи: 41
08-01-2015 дата публикации

EVAPORATED FUEL TREATMENT APPARATUS

Номер: US20150007799A1
Автор: Takeshita Shinya, Yamamoto Norihisa
Принадлежит:

An evaporated fuel treatment apparatus includes a passage circulating fluid being formed therein, a tank port and a purge port being formed at one end side of the passage, and an atmosphere port being formed at another end side of the passage. At least four adsorbent layers in which adsorbent adsorbing fuel components is filled are provided in the passage. The evaporated fuel treatment apparatus has a main adsorbent layer and a region provided on an atmosphere port side of the main adsorbent layer. At least three adsorbent layers that are different from the main adsorbent layer, and separating portions that separate the adsorbent layers which are adjacent to each other are provided in the region. The volume of at least one separating portion in the region is made larger than a total of the volumes of adsorbent layers that sandwich the separating portion therebetween. 1. An evaporated fuel treatment apparatus in which a passage circulating fluid inside is formed , a tank port and a purge port are formed at one end of the passage , an atmosphere port is formed at the other end of the passage , and at least four adsorbent layers in which adsorbent adsorbing fuel components is filled are provided in the passage ,the evaporated fuel treatment apparatus characterized of having a main adsorbent layer and a region that is provided on an atmosphere port side of the main adsorbent layer,wherein:at least three adsorbent layers that are different from the main adsorbent layer, and separating portions separating adjacent ones in the adsorbent layers are provided in the region; anda volume of at least one separating portion in the region is made larger than a total of volumes of the adsorbent layers that sandwich the separating portion therebetween.2. The evaporated fuel treatment apparatus according to claim 1 , wherein claim 1 , with respect to two adsorbent layers that sandwich therebetween a separating portion that has a volume that is made larger than a total of the volumes ...

Подробнее
Номер записи: 42
12-01-2017 дата публикации

Evap system with valve to improve canister purging

Номер: US20170009673A1
Автор: Aed M. Dudar
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Systems and methods are provided for an evaporative emissions control system. In one example, a system for an engine may comprise a fuel vapor canister, a mixing valve positioned in a fresh air line upstream of the vapor canister, and an actuator physically coupled to the mixing valve for adjusting a position of the mixing valve to increase turbulence in air entering the vapor canister. The position of the mixing valve may be adjusted to increase an amount of turbulence in air entering the fuel vapor canister.

Подробнее
Номер записи: 43
12-01-2017 дата публикации

DIAGNOSTIC METHOD FOR DIAGNOSING STICKING OF CANISTER PURGE VALVE AND AUTOMOTIVE DIAGNOSTIC SYSTEM THEREFOR

Номер: US20170009706A1
Автор: KIM Dong-Ha, Kim Jong-Seok
Принадлежит:

Disclosed is a diagnostic method of diagnosing sticking of a canister purge valve comprising steps of: controlling opening and closing of the canister purge valve in order to diagnose sticking of the canister purge valve and calculating a throttle learning value for acquiring variation in an air inflow amount based on an intake air pressure sensor and an throttle opening amount in each of control sections; comparing the throttle learning values calculated in each of control sections and acquiring variation in the air inflow amount flowing from the canister purge valve when the canister purge valve is opened and closed; and determining whether the canister purge valve is stuck or not based on the variation in the air inflow amount. 1. A diagnostic method of diagnosing sticking of a canister purge valve comprising steps of:controlling opening and closing of the canister purge valve in order to diagnose sticking of the canister purge valve and calculating a throttle learning value for acquiring variation in an air inflow amount based on an intake air pressure sensor and an throttle opening amount in each of control sections;comparing the throttle learning values calculated in each of control sections and acquiring variation in the air inflow amount flowing from the canister purge valve when the canister purge valve is opened and closed; anddetermining whether the canister purge valve is stuck or not based on the variation in the air inflow amount.2. The diagnostic method according to claim 1 , wherein the step of calculating the throttle learning value comprise steps of: acquiring a first air inflow amount flowing into an engine based on output values of the intake air pressure sensor; acquiring a second air inflow amount flowing into the engine depending on the throttle opening amount; and comparing the first air inflow amount with the second air inflow amount and calculating a throttle learning value of the canister purge valve.3. The diagnostic method according to ...

Подробнее
Номер записи: 44
12-01-2017 дата публикации

CANISTER

Номер: US20170009707A1
Автор: Kuboyama Keisuke, Minezawa Shogo
Принадлежит:

A canister in one aspect of the present invention comprises an adsorber having a honeycomb shape that adsorbs evaporated fuel and a housing chamber that houses the adsorber. The canister comprises an outer passage, provided in the housing chamber, that passes over an outer surface of the adsorber and a flow passage that passes through the adsorber and the outer passage as a flow passage for the evaporated fuel to pass through the housing chamber. 1. A canister comprising:an adsorber having a honeycomb shape that adsorbs evaporated fuel; anda housing chamber that houses the adsorber, an outer passage, provided in the housing chamber, that passes over an outer surface of the adsorber; and', 'a flow passage that sequentially passes through the outer passage and the adsorber as a flow passage for the evaporated fuel to pass through the housing chamber., 'wherein the canister comprises2. The canister according to claim 1 , wherein the outer passage comprises a narrowing portion in which a flow passage area is gradually reduced from upstream toward downstream of a flow of the evaporated fuel.3. The canister according to claim 1 , further comprising:a first chamber that houses an adsorbent;a second chamber that houses an adsorbent; anda third chamber as the housing chamber,wherein the canister comprises a flow passage that passes through housing spaces where the adsorbents are housed in the first chamber and the second chamber, and through the adsorber and the outer passage in the third chamber.4. The canister according to claim 3 , wherein the adsorbents are activated carbon.5. The canister according to claim 1 , wherein the adsorber comprises a carbon material. This international application claims the benefit of Japanese Patent Application No. 2014-10367 filed Jan. 23, 2014 in the Japan Patent Office, and the entire disclosure of Japanese Patent Application No. 2014-10367 is incorporated herein by reference.The present invention relates to a canister, and more ...

Подробнее
Номер записи: 45
14-01-2016 дата публикации

FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20160010570A1
Автор: HONDA Koji, MIYAZAKI Ryuji, MORIHIRO Kinji, NAKATSUKA Tomonori, TSUTSUMI Hidetoshi
Принадлежит:

A fuel supply system for use with an internal combustion engine has a check valve and a purge valve disposed in a purge passage that extends from a canister to connect with an intake passage of the internal combustion engine. A controller regulates the purge valve open with a first opening degree or a first duty ratio during a purge operation. The controller may also regulate the purge valve to open with a second opening degree larger than the first opening degree or a second duty ratio larger than the first duty ratio a predetermined time after initiating the purge operation. 1. A fuel vapor supply system configured to supply fuel vapor to an internal combustion engine having an intake passage and a fuel injector , the fuel vapor supply system comprising:a canister configured to store the fuel vapor;a purge passage extending from the canister to connect to the intake passage of the internal combustion engine wherein the purge passage allows the fuel vapor stored in the canister to flow to the internal combustion engine through the purge passage;a purge valve disposed in the purge passage wherein the purge valve is configured to regulate a flow rate of the fuel vapor flowing from the canister to the intake passage;a check valve disposed in the purge passage between the purge valve and the intake passage wherein the check valve is configured to permit the flow of the fuel vapor from the canister to the intake passage and further wherein the check valve is configured to prevent the flow of air from the intake passage to the canister;wherein the purge passage has an intermediate purge passage that extends from the purge valve to the check valve; and control a degree of opening of the purge valve or control a duty ratio wherein the duty ratio is defined as a ratio of a valve opening time to a predetermined frequency period and further wherein control of the degree of opening of the purge valve or control of the duty ratio regulates the flow rate of the fuel vapor ...

Подробнее
Номер записи: 46
14-01-2016 дата публикации

FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20160010571A1
Автор: HONDA Koji, MIYAZAKI Ryuji, MORIHIRO Kinji, NAKATSUKA Tomonori, TSUTSUMI Hidetoshi
Принадлежит:

A fuel supply system adapted to supply fuel to an internal combustion engine has both a check valve and a purge valve disposed in a purge passage that extends from a canister to connect with an intake passage of the internal combustion engine. A controller estimates a pressure within an intermediate purge passage of the purge passage located between the check valve and the purge valve without relying on the use of a separate pressure detection device to provide information regarding the same. 1. A fuel vapor supply system configured to supply fuel vapor to an internal combustion engine having an intake passage , the fuel vapor supply system comprising:a canister configured to store the fuel vapor;a purge passage extending from the canister to connect to the intake passage of the internal combustion engine wherein the purge passage allows the fuel vapor stored in the canister to flow to the internal combustion engine through the purge passage;a purge valve disposed in the purge passage wherein the purge valve is configured to regulate a flow rate of the fuel vapor flowing from the canister to the intake passage is controlled;a check valve disposed in the purge passage between the purge valve and the intake passage wherein the check valve is configured to permit the flow of the fuel vapor from the canister to the intake passage and further wherein the check valve is configured to prevent the flow of air from the intake passage to the canister;wherein the purge passage has an intermediate purge passage that extends from the purge valve to the check valve; andwherein the check valve is configured to open when an intermediate purge passage pressure within the intermediate purge passage exceeds an intake passage pressure within the intake passage and the check valve is configured to close when the intermediate purge passage pressure does not exceed the intake passage pressure;a pressure detection device configured to detect the intake passage pressure; control a degree of ...

Подробнее
Номер записи: 47
14-01-2016 дата публикации

FUEL EVAPORATIVE GAS TREATMENT DEVICE FOR FUEL TANK

Номер: US20160010599A1
Автор: Kato Hiroshi, Tsubone Toshiyuki, YAMAMOTO Norimasa, Yoshida Naoto
Принадлежит:

A fuel evaporative gas treatment device for a fuel tank is used in a motorcycle including a combustion engine with a supercharger. The fuel evaporative gas treatment device includes a canister which contains an adsorbent for adsorbing fuel evaporative gas from the fuel tank, a communication passage which communicates between an air intake passage for the combustion engine and the canister, and a check valve provided on the communication passage. The check valve blocks fluid flow from the air intake passage to the canister and permits fluid flow from the canister to the air intake passage. 1. A fuel evaporative gas treatment device for a fuel tank , the fuel evaporative gas treatment device being used in a vehicle including a combustion engine with a supercharger , the fuel evaporative gas treatment device comprising:a canister containing an adsorbent which adsorbs fuel evaporative gas from the fuel tank;a communication passage configured to communicate between an air intake passage for the combustion engine and the canister; anda check valve provided on the communication passage, the check valve being configured to block fluid flow from the air intake passage to the canister and permit fluid flow from the canister to the air intake passage.2. The fuel evaporative gas treatment device as claimed in claim 1 , wherein an air intake side communication hole communicating with the air intake passage;', 'a canister side communication hole communicating with the canister;', 'a partition wall separating between the air intake side and the canister side communication holes, the partition wall being provided with a valve port configured to communicate between the air intake side and the canister side communication holes; and', 'a valve body configured to open and close the valve port, and, 'the check valve includesthe valve body is movable between a seated position at which the valve port is closed and a non-seated position at which the valve port is opened, and moves from the ...

Подробнее
Номер записи: 48
11-01-2018 дата публикации

SYSTEMS AND METHODS FOR INDICATING CANISTER PURGE VALVE DEGRADATION

Номер: US20180010532A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for indicating whether a canister purge valve in a vehicle evaporative emissions control system is degraded. In one example, an air intake system hydrocarbon (AIS HC) trap temperature may be monitored during a refueling event, and responsive to an indication that the AIS HC trap temperature change is greater than a predetermined threshold, it may be indicated that the canister purge valve is degraded. In this way, diagnosis of whether a vehicle canister purge valve is degraded may be indicated without the use of engine manifold vacuum, and may be advantageous for vehicles configured to operate for significant amounts of time without engine operation, or without intake manifold vacuum. 1. A method comprising:monitoring a fuel vapor loading state of an adsorbent material positioned in an engine air intake while fuel is being added to a fuel tank that supplies fuel to the engine; andresponsive to an indication that an increase in the fuel vapor loading state is greater than a first predetermined threshold:indicating a canister purge valve configured to seal the fuel tank from the engine air intake is degraded.2. The method of claim 1 , wherein the adsorbent material positioned in the engine air intake comprises an air intake system hydrocarbon trap (AIS HC) claim 1 , and wherein the adsorbent material includes one or more of carbon claim 1 , activated carbon claim 1 , or zeolites claim 1 , and further comprising automatically starting an engine of the vehicle responsive to the fuel vapor loading state being greater than a second predetermined threshold.3. The method of claim 1 , wherein the fuel vapor loading state of the adsorbent material is indicated while fuel is being added to the fuel tank based on a monitored temperature change of the adsorbent material;wherein the temperature change is monitored by one or more temperature sensors embedded in the adsorbent material; and whereina temperature increase indicates the adsorption of ...

Подробнее
Номер записи: 49
14-01-2021 дата публикации

EVAPORATED FUEL PROCESSING DEVICE

Номер: US20210010432A1
Автор: MIURA Yuuichirou
Принадлежит:

An evaporated fuel processing device includes a relationship learning unit that, during a learning operation, learns the relationship between a valve opening start amount and a pressure difference. In particular, the relationship learning unit learns this relationship when a valve opening detection unit detects a plurality of different valve opening start amounts and a pressure difference detection unit detects a plurality of different pressure differences. Then, the relationship learning unit creates a relationship map between the valve opening start amount and the pressure difference. The evaporated fuel processing device then corrects the valve opening start amount based on this relationship map. 2. The evaporated fuel processing device according to claim 1 , wherein the learning operation of the relationship learning unit is performed during a process of increasing the pressure in the fuel tank while performing the sealing operation.3. The evaporated fuel processing device according to claim 1 , whereinthe canister side pressure detector includesa canister pressure sensor provided in the canister and configured to detect pressure in the canister as the canister side pressure during the first purge operation, anda pressure estimation unit included in the controller configured to estimate the canister side pressure based on a combustion pressure of the internal combustion engine during the third purge operation.4. The evaporated fuel processing device according to claim 1 , wherein the opening degree command unit determines the opening degree command amount such that claim 1 , during the first purge operation and the third purge operation claim 1 , the evaporated fuel flows at a target flow rate through the sealing valve.6. The evaporated fuel processing device according to claim 5 , further comprising:a valve opening detection unit that, while the opening degree command amount is gradually increased from zero, determines the opening degree command amount has ...

Подробнее
Номер записи: 50
09-01-2020 дата публикации

Fuel Vapor Processing Apparatus

Номер: US20200011276A1
Автор: MURATA Kazuho, YAMAUCHI Toshihiko
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

A fuel vapor processing apparatus includes a casing, an adsorbent, and a mixer. The casing includes an atmospheric port and a purge port. In addition, the casing forms an atmospheric port-side adsorption chamber, an agitation chamber, and a purge port-side adsorption chamber therein. The atmospheric port-side adsorption chamber, the agitation chamber, and the purge port-side adsorption chamber are continuously arranged in a gas flow direction from the atmospheric port through the casing to the purge port. The adsorbent fills the atmospheric port-side adsorption chamber and the purge port-side adsorption chamber. The adsorbent is configured to adsorb and desorb fuel vapor. The mixer is disposed in the agitation chamber and includes a spiral flow forming part configured to spirally guide gas flowing through the agitation chamber. 1. A fuel vapor processing apparatus , comprising:a casing including an atmospheric port and a purge port, wherein the casing forms an atmospheric port-side adsorption chamber, an agitation chamber, and a purge port-side adsorption chamber therein, wherein the atmospheric port-side adsorption chamber, the agitation chamber, and the purge port-side adsorption chamber are continuously arranged in a gas flow direction from the atmospheric port through the casing to the purge port;an adsorbent filling the atmospheric port-side adsorption chamber and the purge port-side adsorption chamber, wherein the adsorbent is configured to adsorb and desorb fuel vapor; anda mixer disposed in the agitation chamber and including a spiral flow forming part, wherein the spiral flow forming part is configured to spirally guide gas flowing through the agitation chamber.2. The fuel vapor processing apparatus according to claim 1 ,wherein the spiral flow forming part is disposed at an upstream end or a downstream end of the agitation chamber in the gas flow direction.3. The fuel vapor processing apparatus according to claim 1 ,wherein the spiral flow forming part ...

Подробнее
Номер записи: 51
19-01-2017 дата публикации

FLAP VALVE DEVICE AND GAS LIQUID SEPARATION DEVICE PROVIDED WITH FLAP VALVE DEVICE

Номер: US20170015192A1
Автор: Abe Ryota
Принадлежит:

Provided is a flap valve device and a gas liquid separation device provided with a flap valve wherein the flap valve device is highly compact, and is easy to assemble. In a normally open flap valve device () comprising a main body () having an opening (), a flap () for selectively closing the opening and a torsion coil spring () provided between the main body and the flap for biasing the flap in an opening direction, the flap valve device further comprises a main body side bearing () provided on the main body; a flap side bearing () provided on the flap; a connecting member () including a hinge shaft (A) passed through the main body side bearing, the flap side bearing and a coil portion (A) of the torsion coil spring so as to serve as a pivot shaft for the flap, and an extension (B) extending from an end of the hinge shaft along an outer part (B) of the flap; and a spring engagement portion () provided on the main body for engaging an end of the torsion coil spring; another end of the torsion coil spring being engaged by the extension, the extension being engaged on the outer part of the flap. 1. A normally open flap valve device comprising a main body having an opening , a flap for selectively closing the opening and a torsion coil spring provided between the main body and the flap for biasing the flap in an opening direction , the flap valve device further comprising:a main body side bearing provided on the main body;a flap side bearing provided on the flap;a connecting member including a hinge shaft passed through the main body side bearing, the flap side bearing and a coil portion of the torsion coil spring so as to serve as a pivot shaft for the flap, and an extension extending from an end of the hinge shaft along an outer part of the flap; anda spring engagement portion provided on the main body for engaging an end of the torsion coil spring;another end of the torsion coil spring being engaged by the extension, the extension being engaged on the outer part of ...

Подробнее
Номер записи: 52
21-01-2016 дата публикации

ABNORMALITY SENSING DEVICE FOR EVAPORATION FUEL PURGE SYSTEM

Номер: US20160017849A1
Автор: SHIRAI Kosuke
Принадлежит:

An abnormality sensing device for an evaporation fuel purge system is equipped with a purge passage that connects a canister to an intake passage of an internal combustion engine, a purge pump, a purge control valve, and a valve component that closes and opens the purge passage at a target passage including at least a first purge passage defined between the purge control valve and the intake passage. An abnormality determining portion detects a physical quantity relevant to a pressure change in the target passage in a determination possible state where the purge control valve allows the evaporation fuel to flow through the first purge passage and where the valve component prohibits the evaporation fuel from being supplied to the intake passage.

Подробнее
Номер записи: 53
18-01-2018 дата публикации

SYSTEMS AND METHODS FOR INFERRING BAROMETRIC PRESSURE

Номер: US20180016999A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for determining barometric pressure. In one example, an onboard vacuum pump is utilized to draw a vacuum at a constant flow rate across a reference orifice, and the resulting vacuum level is converted to a barometric pressure. In this way, other sensors for determining barometric pressure in a vehicle may be rationalized without the use of engine operation, and in an example where the other sensors for determining barometric pressure are not functioning as desired, barometric pressure as inferred from the onboard pump may be utilized to adjust engine operation. 1. A method comprising:delivering fuel from a fuel system to an engine propelling a vehicle;storing fuel vapors from the fuel system in an evaporative emissions control system;determining an estimate of barometric pressure as a function of an efficiency of a vacuum pump configured to evacuate or pressurize the fuel system and evaporative emissions control system; andadjusting a vehicle operating parameter responsive to the estimate.2. The method of claim 1 , further comprising:turning on the vacuum pump and drawing a vacuum across a reference orifice of fixed diameter.3. The method of claim 2 , wherein drawing the vacuum across the reference orifice of fixed diameter includes configuring a changeover valve coupled to the vacuum pump in a first position; and whereinpressurizing or evacuating the vehicle fuel system and evaporative emissions control system includes configuring the changeover valve in a second position.4. The method of claim 2 , wherein the efficiency of the vacuum pump is a function of a vacuum level achieved by the vacuum pump when drawing the vacuum across the reference orifice of fixed diameter.5. The method of claim 1 , wherein efficiency of the vacuum pump decreases as barometric pressure decreases; and whereinthe efficiency of the vacuum pump increases as barometric pressure increases.6. The method of claim 1 , further comprising:correlating barometric ...

Подробнее
Номер записи: 54
18-01-2018 дата публикации

FUEL SYSTEM HAVING VENT POINT VALVE

Номер: US20180017023A1
Автор: Mills Vaughn K.
Принадлежит: EATON CORPORATION

A fuel tank system includes a fuel tank, a liquid trap and a tank venting assembly. The fuel tank defines a first vapor space and a second vapor space. The tank venting assembly includes a vent valve, a first vent line, a second vent line and a third vent line. The vent valve can have a movable member that is configured to move between a first open position wherein a front vent point is open and a second closed position wherein the front vent point is closed. The first vent line can be fluidly connected between the liquid trap and the vent valve. The second vent line can be fluidly connected between the vent valve and an auxiliary vent point. The third vent line can connect to an upper vent point. In a closed position, the auxiliary vent point and the upper vent point remain open and vented. 1. A fuel tank system comprising:a fuel tank configured as a reservoir for holding fuel to be supplied to an internal combustion engine, the fuel tank defining a first vapor space and a second vapor space at an area distinct from the first vapor space;a liquid trap; a vent valve having a movable member that is configured to move between a first open position wherein a front vent point is open and a second closed position wherein the front vent point is closed;', 'a first vent line fluidly connected between the liquid trap and the vent valve;', 'a second vent line fluidly connected between the vent valve and an auxiliary vent point at the first vapor space; and', 'a third vent line fluidly connected between the liquid trap and an upper vent point at the second vapor space; and, 'a tank venting assembly comprisingwherein the vent valve is configured to move to the closed position upon a fuel level reaching a predetermined level, wherein in the closed position, the auxiliary vent point and the upper vent point remain open and vented to the liquid trap.2. The fuel tank system of wherein the fuel tank further defines a third vapor space at the vent valve claim 1 , the third vapor ...

Подробнее
Номер записи: 55
21-01-2021 дата публикации

Canister

Номер: US20210016219A1
Автор: Kosugi Ryuji
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

A canister includes a main casing, a first port formed in a wall of the main casing, and a first adsorbent section within the main casing. The first adsorbent section and the wall of the main casing define a space section therebetween. The first adsorbent section includes a first adsorbent and a first retainer holding the first adsorbent. The canister also includes a first elastic element disposed in the space section. The first elastic element urges the first retainer to elastically hold the first adsorbent. In addition, the canister includes a subcasing integral to the wall of the main casing. The subcasing is positioned within the space section. Further, the canister includes a second adsorbent section in communication with the first port. The second adsorbent section includes a second adsorbent disposed within the subcasing. Still further, the canister includes a second retainer holding the second adsorbent. 1. A canister comprising:a main casing;a first port formed in a wall of the main casing; a first adsorbent; and', 'a first retainer holding the first adsorbent;, 'a first adsorbent section within the main casing, wherein the first adsorbent section and the wall of the main casing defining a space section therebetween, and wherein the first adsorbent section comprisesa first elastic element disposed in the space section, wherein the first elastic element biases the first retainer to elastically hold the first adsorbent of the first adsorbent section,a subcasing integral with the wall of the main casing, wherein the subcasing is positioned within the space section; and a second adsorbent disposed within the subcasing; and', 'a second retainer holding the second adsorbent., 'a second adsorbent section in fluid communication with the first port, wherein the second adsorbent section comprises2. The canister according to claim 1 , wherein the main casing comprises:a main casing body having an open top and a bottom; anda closure closing the open top opening of the ...

Подробнее
Номер записи: 56
21-01-2021 дата публикации

Valve Assembly for a Fuel Tank

Номер: US20210016656A1
Автор: Jens Donat, Markus Stephan, Sebastian Morgott, Werner Ruppert
Принадлежит: Alfmeier Praezision SE

A valve assembly for a fuel tank includes a housing with a tank connection and a filter connection to respectively connect the valve assembly to the fuel tank and to an active carbon filter. The tank connection and the filter connection are or can be fluidically connected through a vent duct. A main vent valve with a valve element in the vent duct closes the vent duct in a closing position and opens it in a releasing position. A pilot valve to open the main vent valve is or can be fluidically connected to a pressure chamber of the main vent valve or to an overflow area. The overflow area fluidically connects or can fluidically connect the tank connection or a tank-side vent duct and the filter connection or a filter-side vent duct. Three check valves are also included.

Подробнее
Номер записи: 57
17-04-2014 дата публикации

Vapor fuel processing apparatus

Номер: US20140102419A1
Автор: Hidetoshi Ooiwa, Takashi Senda
Принадлежит: Denso Corp

A canister absorbs evaporated fuel produced in a fuel tank and supplies the absorbed evaporated fuel to an engine. A sealing valve is equipped between the fuel tank and the canister. A detection unit detects a state of a lid of the fuel tank. An intention estimation unit estimates existence of a refueling intention according to an activity of a user. A release time period estimation unit estimates a release time period, which is needed to release a pressure in the fuel tank, according to a state of a vehicle. A manipulation control unit opens the sealing valve when the lid is opened. The manipulation control unit opens the sealing valve, even in a case where the lid is closed, on estimation that the refueling intention exists, and on determination that the estimated release time period is greater than a predetermined time period.

Подробнее
Номер записи: 58
17-04-2014 дата публикации

FUEL VAPOR RECOVERY APPARATUS

Номер: US20140102420A1
Автор: Kimoto Junya, KITAMURA Sunao, Murai Shinji
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

A fuel vapor recovery apparatus to be mounted on a vehicle having a fuel tank has an adsorbent canister capable of adsorbing and desorbing fuel vapor vaporized in the fuel tank, a vapor path providing communication between the fuel tank and the adsorbent canister, a purge path providing communication between the adsorbent canister and an intake path of an internal combustion engine, a purge valve configured to open and close the purge path, a blocking valve configured to open and close the vapor path and having a valve body, and a regulator for controlling the purge valve and the blocking valve. The fuel tank is sealed when the blocking valve is closed. The fuel tank is configured to be depressurized by opening the blocking valve. The blocking valve is composed of a motor valve that has a driving motor and can adjust an opening amount by controlling a stroke of the valve body. 1. A fuel vapor recovery apparatus to be mounted on a vehicle having a fuel tank , comprising:an adsorbent canister capable of adsorbing and desorbing fuel vapor vaporized in the fuel tank;a vapor path providing communication between the fuel tank and the adsorbent canister;a purge path providing communication between the adsorbent canister and an intake path of an internal combustion engine;a purge valve configured to open and close the purge path;a blocking valve configured to open and close the vapor path and having a valve body; anda regulator for controlling the purge valve and the blocking valve;wherein the fuel tank is sealed when the blocking valve is closed, the fuel tank is configured to be depressurized by opening the blocking valve, and the blocking valve is composed of a motor valve that has a driving motor and can adjust an opening amount by controlling a stroke of the valve body.2. The fuel vapor recovery apparatus according to claim 1 , wherein the regulator sets an initial position as a basis for the opening amount of the valve body at an initial valve opening after running ...

Подробнее
Номер записи: 59
17-04-2014 дата публикации

FUEL VAPOR LEAKAGE DETECTION METHOD

Номер: US20140102421A1
Автор: KATO Yasuo
Принадлежит: Denso Corporation

A fuel vapor leakage detection device performs a fuel vapor leakage detection method to detect a clogging of passages in an evaporated fuel processing system by (i) switching a switching valve after measuring a first reference pressure, (ii) determining whether a detected pressure equals atmospheric pressure after opening a purge valve, (iii) recording the detected pressure after closing the purge valve, and (iv) switching the switching valve to depressurize an atmospheric system and to determine whether a current detection value of the pressure sensor is the same as the first reference pressure. Then, a second reference pressure is measured for comparison with the first reference pressure, to determine whether the evaporation system is clogged. In such manner, leakage and the clogging of the passages in an evaporated fuel processing system may be detected. 1. A fuel vapor leakage detection method for a fuel vapor leakage detection device that includesa canister connection passage connected to a canister that absorbs a fuel vapor in a fuel tank,an air passage for allowing fluid communication between the canister connection passage and atmosphere,a pressure detection passage for allowing fluid communication with the canister connection passage,a switching valve selectively switching fluid communication of the canister connection passage with one of the pressure detection passage or the air passage,a bypass passage for bypassing the switching valve that provides fluid communication between the canister connection passage and a pressure detection passage,a pressure-depressure unit (i) pressurizing or depressurizing the fuel tank and the canister when the switching valve establishes fluid communication between the canister connection passage and the pressure detection passage and (ii) pressurizing or depressurizing the air passage when the switching valve establishes fluid communication between the canister connection passage and the air passage,a throttle positioned ...

Подробнее
Номер записи: 60
22-01-2015 дата публикации

DEVICE AND METHOD FOR DIAGNOSING EVAPORATED FUEL PROCESSING DEVICE

Номер: US20150020780A1
Автор: Otsu Isao, TAKAKURA Shinsuke
Принадлежит:

An evaporated fuel processing apparatus includes a blocking valve configured to selectively allow and shut off communication between a canister and a fuel tank, and adsorbs evaporated fuel by the canister by opening the blocking valve during fuel filling, wherein the evaporated fuel occurs in the fuel tank, and performs a purge operation of introducing purge gas into an intake air line of an internal combustion engine with the blocking valve closed while the internal combustion engine is operating, wherein the purge gas contains a fuel component released from the canister. A diagnostic apparatus is configured to diagnose whether or not the blocking valve is abnormal, based on sensing of evaporated fuel flowing through the blocking valve while the purge operation is being performed. 1. A diagnostic apparatus for an evaporated fuel processing apparatus , wherein the evaporated fuel processing apparatus includes a blocking valve configured to selectively allow and shut off communication between a canister and a fuel tank , and adsorbs evaporated fuel by the canister by opening the blocking valve during fuel filling , wherein the evaporated fuel occurs in the fuel tank , and performs a purge operation of introducing purge gas into an intake air line of an internal combustion engine with the blocking valve closed while the internal combustion engine is operating , wherein the purge gas contains a fuel component released from the canister ,wherein the diagnostic apparatus is configured to diagnose whether or not the blocking valve is abnormal, based on sensing of evaporated fuel flowing through the blocking valve while the purge operation is being performed.2. The diagnostic apparatus as claimed in claim 1 , wherein:the canister includes a first end and a second end in a flow direction, wherein a charge port and a purge port is arranged at the first end, and a drain port is disposed at the second end;the charge port is connected to the fuel tank via the blocking valve; ...

Подробнее
Номер записи: 61
21-01-2021 дата публикации

DEVICE AND METHOD FOR CONTROLLING PURGE OF VEHICLE

Номер: US20210017920A1
Автор: BAE Howoong, BYEON Min
Принадлежит:

A device for controlling purge of a vehicle includes: a state detector detecting state information to control purge of an engine; a controller generating an amount of fuel of each of cylinders of the engine using an amount of air of each cylinder, compensation information, a lambda control value, and an amount of a purge gas of the engine, checking a purge distribution coefficient according to an amount of an intake air for each cylinder when the state information satisfies a control entry condition, generating an amount of redistribution of the purge gas using the amount of the purge gas and the purge distribution coefficient, and generating an injection time for each cylinder using the amount of fuel, a conversion coefficient, and the amount of redistribution of the purge gas; and an injector injecting fuel in each cylinder during the injection time based on control of the controller. 1. A device for controlling purge of a vehicle , comprising:a state detector configured to acquire state information to control purge of an engine of the vehicle; generate an amount of fuel supplied to each of cylinders of the engine using an amount of air of each cylinder, compensation information, a lambda control value, and an amount of a purge gas of the engine,', 'check a purge distribution coefficient based on an amount of an intake air for each cylinder when the state information satisfies a control entry condition,', 'generate an amount of redistribution of the purge gas using the amount of the purge gas and the purge distribution coefficient, and', 'generate an injection time for each cylinder using the amount of fuel, a conversion coefficient, and the amount of redistribution of the purge gas; and, 'a controller configured toan injector configured to inject fuel in each cylinder during the injection time based on control of the controller.2. The device of claim 1 , wherein the state information comprises a duty of a purge valve transferring the purge gas and further ...

Подробнее
Номер записи: 62
16-01-2020 дата публикации

Vaporized-fuel treating apparatus

Номер: US20200018247A1
Автор: Masanobu SHINAGAWA, Shota Tsukamoto, Yoshihiko Honda
Принадлежит: Aisan Industry Co Ltd

A vaporized-fuel treating apparatus includes a pump part for controlling a flow of purge gas and a heating part for controlling driving of the pump part and for generating heat. At least a part of the heating part is placed to be exposed in an atmosphere passage. The pump part is either placed in the purge passage or arranged connecting to the purge passage.

Подробнее
Номер записи: 63
28-01-2016 дата публикации

CANISTER DESIGN FOR EVAPORATIVE EMISSION CONTROL

Номер: US20160025019A1
Автор: Ignasiak Donald, Pearce Russell Randall
Принадлежит:

Methods and systems are provided for purging a fuel vapor canister into an engine intake. A method comprises flowing fuel vapors from a fuel tank through a full length of the fuel vapor canister from a first input to a first output on a first opposite side from the first input. The adsorbed fuel vapors may be purged from the fuel vapor canister through a full width in the fuel vapor canister from a second input to a second output on a second opposite side from the second input. 1. A method , comprising:flowing fuel vapors from a fuel tank through a full length of a fuel vapor canister from a first input to a first output on a first opposite side from the first input; andpurging the fuel vapors from the fuel vapor canister through a full width in the fuel vapor canister from a second input to a second output on a second opposite side from the second input.2. The method of claim 1 , wherein the first input and the first output are positioned directly across from each other claim 1 , the first output being arranged on the first opposite side claim 1 , and wherein the first input and the first output include the full length therebetween.3. The method of claim 1 , wherein the second input and the second output are arranged directly across from each other claim 1 , the second output being positioned on the second opposite side and wherein the second input and the second output include the full width therebetween.4. The method of claim 1 , wherein the purging of the fuel vapors occurs in a substantially perpendicular direction relative to the flowing of fuel vapors from the fuel tank through the full length of the fuel vapor canister.5. The method of claim 1 , wherein the full width of the fuel vapor canister is shorter than the full length of the fuel vapor canister.6. The method of claim 1 , wherein purging the fuel vapors includes flowing air simultaneously through a plurality of check valves into an adsorptive material arranged within the fuel vapor canister claim 1 , ...

Подробнее
Номер записи: 64
25-01-2018 дата публикации

METHOD AND SYSTEM FOR SENSOR RATIONALITY CHECK

Номер: US20180023497A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for performing rationality check of a hydrocarbon sensor in an evaporative emission control system. In one example, a method may include sensing fuel vapors vented from a fuel vapor canister to atmosphere via the sensor, and performing sensor rationality check by flowing desorbed hydrocarbons from the fuel vapor canister to an engine via the sensor during purging of the fuel vapor canister. 1. A method for an engine comprising:sensing fuel vapor vented from a fuel vapor canister to atmosphere via a sensor; andduring purging of the fuel vapor canister,actuating valves to flow desorbed hydrocarbons from the fuel vapor canister to the engine,sensing desorbed hydrocarbons with the sensor positioned in the flow path of the desorbed hydrocarbons, anddetermining sensor degradation based on the sensed desorbed hydrocarbons.2. The method of claim 1 , wherein sensor degradation is determined if the sensed desorbed hydrocarbons are lower than a non-zero threshold.3. The method of claim 1 , further comprising flowing desorbed hydrocarbons to the engine bypassing the sensor during purging of the fuel vapor canister.4. The method of claim 3 , wherein the sensor is bypassed after determining sensor degradation.5. The method of claim 1 , wherein the valves are actuated by activating two valves claim 1 , and each valve in direct fluid communication with the fuel vapor canister.6. The method of claim 5 , wherein the valves are two three way valves.7. The method of claim 1 , wherein the purging of the fuel vapor canister is performed in response to an estimated load of the fuel vapor canister higher than a threshold.8. The method of claim 1 , wherein the purging of the fuel vapor canister is performed in response to an engine start after refueling.9. A method for an engine claim 1 , comprising:in a first condition, flowing air to a vent port of the fuel vapor canister, and then flowing the desorbed hydrocarbons from a purge port of the fuel vapor ...

Подробнее
Номер записи: 65
25-01-2018 дата публикации

DEVICE HAVING AN ACTIVATED CARBON CANISTER AND MOTOR VEHICLE HAVING SUCH A DEVICE

Номер: US20180023519A1
Автор: RATTE Thomas
Принадлежит:

A device having activated carbon canisters. A fuel tank used to supply fuel is vented into the activated carbon canisters that have, as activated carbon filters, carbon granules having large surfaces for temporarily adsorbing the hydrocarbon gases contained in the fuel tank emissions. The regeneration occurs cyclically by backflushing where fresh air is sucked in through an outlet and conducted through the activated carbon canisters to lead the hydrocarbon gases back into the region of the combustion apparatus. The device has structurally identical activated carbon canisters arranged in the same plane and connected in series by connecting lines, whereby an outlet opening of a first activated carbon canister is connected to an inlet opening of a further activated carbon canister. The outlet opening of the activated carbon canister is arranged above the inlet opening with respect to gravity. 1. A device is assigned to a fuel tank of a motor vehicle , the device comprising:a plurality of activated carbon canisters, each enclosing an activated carbon filter; andconnecting lines connected to the plurality of activated carbon canisters so that an outlet opening of a first activated carbon canister is, in each case, connected to an inlet opening of a further activated carbon canister,wherein the respective outlet opening is arranged below the inlet opening in the direction of the force of gravity.2. The device of claim 1 , wherein at least one connecting line the connecting lines has a collecting point arranged in a region of the connecting line below the inlet opening of one of the plurality of activated carbon canisters.3. The device of claim 2 , wherein the collecting point has a pipe bend.4. The device of claim 1 , wherein the plurality of activated carbon canisters have substantially corresponding volumes.5. The device of claim 1 , wherein the outlet openings and/or the inlet openings of the plurality of activated carbon canisters are claim 1 , in each case claim 1 , ...

Подробнее
Номер записи: 66
10-02-2022 дата публикации

FUEL TANK ISOLATION SOLENOID VALVE FOR VEHICLE

Номер: US20220042481A1
Автор: JEON Hyun Do, KIM Tac Koon, RYU Bu Yeol
Принадлежит:

A fuel tank isolation solenoid valve for a vehicle includes: a plunger disposed in the isolation solenoid valve to be vertically moved and has first vent holes for releasing overpressure or over-negative pressure; a valve body disposed in the isolation solenoid valve to be vertically moved and has second vent holes for releasing overpressure or over-negative pressure. 1. A fuel tank isolation solenoid valve for a vehicle , the fuel tank isolation solenoid valve comprising:an upper case;a bobbin mounted in the upper case;a coil wound around the bobbin;a core mounted in the bobbin, the core having therein a plunger passage that is open at a lower end thereof; a first passage configured to communicate with a fuel tank,', 'a second passage configured to communicate with a canister, and', 'a communication passage defined between the first passage and the second passage;, 'a lower case coupled to the upper case, the lower case includinga plunger having a lower open space formed therein and a plurality of first vent holes configured to allow the first passage to communicate with the lower open space, the plunger being disposed in the plunger passage and configured to vertically move;a main seal mounted on a lower surface of the plunger;a valve body disposed in the communication passage to be vertically moved and having a plurality of second vent holes, wherein the plurality of second vent holes are vertically formed through the valve body and are configured to allow the first passage to communicate with the second passage;a sealing plate mounted on the lower case at an outer circumference of the communication passage so as to be in airtight contact with both a lower surface of the main seal and an upper surface of the valve body;a first spring disposed between a lower surface of the core and a lower end of the plunger; anda second spring disposed between a lower surface of the valve body and a bottom surface of the communication passage.2. The fuel tank isolation solenoid ...

Подробнее
Номер записи: 67
24-04-2014 дата публикации

FILTER ARRANGEMENT FOR A TANK VENTILATION SYSTEM OF A FUEL TANK

Номер: US20140109879A1
Автор: Menke Andreas
Принадлежит: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT

A tank ventilation system of a fuel tank () has at least one housing () with a tank-side fuel vapor inlet opening (), an engine-side fuel vapor outlet opening () and an atmosphere opening (). The housing () has at least one first adsorption region () and a second adsorption region () upstream of the fuel vapor outlet opening (). The second adsorption region () has a substantially lower absorption capacity than the first adsorption region (), which is placed in a direction of flow toward the atmosphere opening (). 1. A filter arrangement for a tank ventilation system of a fuel tank , comprising at least one housing with at least a tank-side fuel vapor inlet opening , an engine-side fuel vapor outlet opening and an atmosphere opening , the filter arrangement having at least one first adsorption region and at least a second adsorption region upstream of the fuel vapor outlet opening , said second adsorption region having a substantially lower absorption capacity than the first adsorption region which is placed in a direction of flow toward the atmosphere opening.2. The filter arrangement of claim 1 , wherein the second adsorption region takes up between 5% and 15% of an entire volume of the housing.3. The filter arrangement of claim 2 , wherein the second adsorption region also is upstream of the fuel vapor inlet opening claim 2 , wherein the volume/area ratio assigned to the fuel vapor outlet opening is greater than the volume/area ratio assigned to the fuel vapor inlet opening.4. The filter arrangement of claim 3 , wherein the volume/area ratio assigned to the fuel vapor outlet opening is approximately twice the volume/area ratio assigned to the fuel vapor inlet opening.5. The filter arrangement of claim 1 , wherein activated carbon is the adsorbent for all of the adsorption regions claim 1 , and wherein the adsorbent of the second adsorption region has a substantially smaller specific working capacity than the adsorbent of the first adsorption region.6. The filter ...

Подробнее
Номер записи: 68
23-01-2020 дата публикации

INTERNAL COMBUSTION ENGINE WITH A VENTURI NOZZLE DISPOSED IN A FLUID-CARRYING COMPONENT IN FLUID CONNECTION WITH A TANK VENTILATION LINE

Номер: US20200025155A1
Автор: KOCH Johannes, KUENSTNER Marko
Принадлежит: VOLKSWAGEN AKTIENGESELLSCHAFT

The invention relates to an internal combustion engine having a fuel tank (), a tank ventilation line () and a Venturi nozzle () disposed in a fluid-carrying component (), wherein the Venturi nozzle () has an inflow channel (), an opening point () adjoining downstream of the inflow channel () with a fluid connection to the tank ventilation line (), and an outflow channel () adjoining downstream of the opening point (). In this case, an outflow section () of the Venturi nozzle downstream of the opening point () is surrounded by the component () in such a manner that a detection space () is formed around the outflow section (), wherein the detection space () has at least one inlet opening () via which the detection space () can be pressurized and wherein at least one pressure sensor () for monitoring the pressure in the detection space () is provided. 1. An internal combustion engine comprising:a tank ventilation line;a Venturi nozzle disposed in a fluid-carrying component, the Venturi nozzle comprising an inflow channel, an opening point adjoining downstream of the inflow channel, which is in fluid connection with the tank ventilation line, and an outflow channel adjoining downstream of the opening point; andan outflow section of the Venturi nozzle downstream of the opening point being surrounded by the fluid-carrying component such that a detection space is formed around the outflow section,wherein the detection space has at least one inlet opening via which the detection space is pressurized, andwherein at least one pressure sensor monitors a pressure in the detection chamber.2. The internal combustion engine according to claim 1 , wherein the inflow channel and/or a port to the tank ventilation line are at least partially surrounded by the fluid-carrying component.3. The internal combustion engine according to claim 1 , wherein the fluid-carrying component is an intake hood or an exhaust gas turbocharger.4. The internal combustion engine according to claim 1 , ...

Подробнее
Номер записи: 69
28-01-2021 дата публикации

Evaporated Fuel Processing Device

Номер: US20210025354A1
Автор: MURATA Kazuho
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

An evaporated fuel processing device includes a casing having a passage through which gasses flow. The casing includes a pair of adsorbing chambers arranged in series relative to a flow direction of the gasses in the passage. The casing also includes a diffusion chamber positioned between the pair of adsorbing chambers. A first diffusing element and a second diffusing element are disposed in the diffusion chamber. The first diffusing element is a frustum-shaped member having a large-diameter opening portion opening into one of the pair adsorbing chambers and a small-diameter opening portion opening into the diffusion chamber. The second diffusing element is a frustum-shaped member having a large-diameter opening portion opening into the other of the pair of adsorbing chambers and a small-diameter opening portion opening into the diffusion chamber. 1. An evaporated fuel processing device , comprising:a casing including a passage configured to flow gasses therethrough, a tank port in fluid communication with a first end of the passage, a purge port in fluid communication with the first end of the passage, an atmosphere port in fluid communication with a second end of the passage, a pair of adsorbing chambers filled with adsorbing materials configured to adsorb evaporated fuel and arranged in series relative to a flow direction of gasses through the passage, and a diffusion chamber positioned between the pair of adsorbing chambers, wherein the diffusion chamber is not filled with any adsorbing materials;a first diffusing element and a second diffusing element disposed in the diffusion chamber, wherein the first diffusing element is a frustum-shaped member having a large-diameter opening portion opening into one of the pair of adsorbing chambers and a small-diameter opening portion opening into the diffusion chamber, and wherein the second diffusing element is a frustum-shaped member having a large-diameter opening portion opening into the other of the pair of adsorbing ...

Подробнее
Номер записи: 70
02-02-2017 дата публикации

METHOD FOR ASCERTAINING THE CHARGING OF A STORE FOR HYDROCARBONS

Номер: US20170030276A1
Автор: Herges Thomas, Knecht Jochen, Schock Guido
Принадлежит:

A method for ascertaining the charging of a store for hydrocarbons originating from a fuel tank of a vehicle is characterized in that the charging of the store is determined from a variable characterizing the fuel outgassing with the aid of a model which maps the vapor pressure curve of the fuel. 1. A method for ascertaining the charging of a store for hydrocarbons originating from a fuel tank of a vehicle , comprising:determining the charging of the store from a variable characterizing fuel outgassing with the aid of a model which maps a vapor pressure curve of the fuel.2. The method as recited in claim 1 , wherein at least one of: a variable characterizing a fuel temperature claim 1 , and a variable characterizing a change in the fuel temperature over time claim 1 , is determined claim 1 , and is taken into account in ascertaining the variable characterizing the fuel outgassing.3. The method as recited in claim 2 , wherein at least one of: the variable characterizing the fuel temperature claim 2 , and the variable characterizing the change in the fuel temperature over time claim 2 , is determined from at least one of a measured ambient temperature and a temperature model.4. The method as recited in claim 1 , wherein an ambient pressure is ascertained and used for correcting the model which maps the vapor pressure curve of the fuel.5. The method as recited in claim 1 , wherein an acceleration of the fuel tank is ascertained and used for correcting the model which maps the vapor pressure curve of the fuel.6. The method as recited in claim 1 , wherein at least one of: a filling level of the fuel tank claim 1 , and changes in the filling level of the fuel take claim 1 , is ascertained claim 1 , and the variable characterizing the fuel outgassing is ascertained as a function of the at least one of the filling level and the changes in the filling level.7. A machine-readable memory medium on which is stored a computer program for ascertaining the charging of a store for ...

Подробнее
Номер записи: 71
02-02-2017 дата публикации

Check Valve Device And Vapor Fuel Supply System

Номер: US20170030301A1
Автор: FUJISAKI Yoshihiko
Принадлежит:

A check valve device includes a valve portion elastically deformable to prevent or allow a flow of a vapor fuel through a fluid passage in one direction by contacting with or separating from a valve seat. An upstream passage forming member has the valve seat and the fluid passage located upstream of the valve portion. A downstream passage forming member includes a terminal portion housed in the upstream passage forming member and having a downstream passage. A narrowed passage provided inside the terminal portion or between the upstream passage forming member and the terminal portion. A cross-sectional area of the narrowed passage is set to be smaller than any of the fluid passage and the downstream passage. 1. A check valve device capable of limiting a flow of a vapor fuel passing through a fluid passage in one direction , the check valve device comprising:a valve portion extending radially outward from a valve shaft, the valve portion being elastically deformable depending on a direction of a pressure of the vapor fuel, the valve portion being configured to prevent or allow a flow of the vapor fuel through the fluid passage by contacting with or separating from a valve seat located downstream of the fluid passage in accordance with an elastic deformation of the valve portion;an upstream passage forming member including the fluid passage and the valve seat, and supporting the valve shaft;a downstream passage forming member including a terminal portion having therein a downstream passage through which the vapor fuel passed out of the fluid passage flows downstream, the downstream passage forming member being connected to the upstream passage forming member while the terminal portion is housed in the upstream passage forming member; anda narrowed passage provided inside the terminal portion or between an inner wall surface of the upstream passage forming member other than the valve seat and an outer circumferential surface of the terminal portion, a cross-sectional ...

Подробнее
Номер записи: 72
02-02-2017 дата публикации

FUEL EVAPORATIVE EMISSION PROCESSING SYSTEM

Номер: US20170030302A1
Автор: TAKAKURA Shinsuke, TAKEZAWA Tomoharu
Принадлежит:

A fuel evaporative emission processing system suitable for a hybrid vehicle includes a fuel vapor passage, a shut-off valve, a purge passage, a first purge control valve, and a second purge control valve. The shut-off valve selectively opens and closes the fuel vapor passage communicating between a fuel tank and a canister. The first purge control valve opens and closes the purge passage communicating between the canister and an intake air passage of an internal combustion engine. The second purge control valve selectively opens or closes the tank opening passage communicating between the purge passage on an upstream side of the first purge control valve and the fuel tank. When purging the canister, by opening the second purge control valve, the evaporative fuel inside the fuel tank is directly processed by the internal combustion engine, so that increase in the amount of adsorption in the canister can be suppressed. 1. A fuel evaporative emission processing system for an internal combustion engine , comprising:a fuel vapor passage communicating a fuel tank and a canister;a shut-off valve interposed in the fuel vapor passage and configured to selectively open and close the fuel vapor passage,a purge passage communicating the canister and an intake passage of the internal combustion engine;a first purge control valve interposed in the purge passage and configured to selectively open and close the purge passage;a tank opening passage communicating the purge passage in an upstream side position of the first purge control valve and the fuel tank;a second purge control valve interposed in the tank opening passage and configured to selectively open and close the tank opening passage; anda purge control mechanism configured to purge the canister by controlling the first purge control valve during operation of the internal combustion engine, wherein the purge control mechanism is configured to process the evaporative fuel emission in the fuel tank by the internal combustion ...

Подробнее
Номер записи: 73
02-02-2017 дата публикации

FUEL EVAPORATIVE EMISSION PROCESSING SYSTEM

Номер: US20170030303A1
Автор: TAKAKURA Shinsuke
Принадлежит:

A fuel evaporative emission processing system suitable for a hybrid vehicle includes a shut-off valve, a first purge control valve and a second purge control valve. The shut-off valve is selectively opens and closes a fuel vapor passage between a fuel tank and a canister. The first purge control valve selectively opens and closes a purge passage between the canister and the intake passage of an internal combustion engine. The second purge control valve selectively opens and closes a tank opening passage between the canister and the fuel tank. When releasing a pressure for refueling, the second purge control valve with a small diameter opens prior to opening of the shut-off valve so that blow-by of gas associated with opening of the shutoff valve is prevented. 1. A fuel evaporative emission processing system for an internal combustion engine , comprising:a fuel vapor passage communicating a fuel tank and a charge port of a canister;a shut-off valve interposed in the fuel vapor passage and configured to selectively open and close the fuel vapor passage, the shut-off valve being a solenoid valve that is configured to open during refueling;a tank opening passage communicating the fuel tank and the canister;a second control valve interposed in the tank opening passage and configured to open prior to opening of the shut-off valve when releasing a pressure for refueling;a tank pressure sensor configured to detect a pressure in the fuel tank; anda diagnosis mechanism configured to diagnose the second control valve based on a pressure change in the fuel tank developed after opening of the second control valve from a state in which the pressure in the fuel tank is positive with the shut-off valve and the second control valve closed.2. The fuel evaporative emission processing system according to claim 1 , whereinthe second purge control valve is formed with a passage area smaller than a passage area of the shut-off valve.3. The fuel evaporative emission processing system ...

Подробнее
Номер записи: 74
02-02-2017 дата публикации

FUEL TANK STRUCTURE

Номер: US20170030310A1
Автор: ASO Shuichi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A fuel tank structure comprising a fuel tank; a canister; a first pipe that joins together a holding portion of the fuel tank and the canister; a first shut-off valve provided at the first pipe; a filler pipe; a second pipe that joins together the filler pipe and the canister; a second shut-off valve provided at the second pipe; a pressure sensor that detects the pressure inside the holding portion; a fuel pump that feeds the fuel to an engine; and a control unit. The control unit opens the first shut-off valve during refueling such that evaporative fuel is permitted to move from the holding portion to the canister, and closes the first shut-off valve after refueling. The control unit opens the second shut-off valve when the pressure inside the holding portion detected by the pressure sensor drops below a predetermined pressure which is lower than the atmospheric pressure. 1. A fuel tank structure comprising:a fuel tank that is mounted in a vehicle and that is provided with a holding portion that holds fuel;a canister that communicates with the outside atmosphere;a first pipe that joins together the holding portion and the canister;a first shut-off valve that opens and closes the first pipe:a filler pipe that is connected to the holding portion, and that is provided with a refueling aperture into which a nozzle of a fueling gun is inserted and that remains closed other than during refueling;a second pipe that joins together the filler pipe and the canister;a second shut-off valve that opens and closes the second pipe:a pressure sensor that detects the pressure inside the holding portion;a fuel pump that feeds the fuel inside the holding portion to an engine; anda control unit that opens the first shut-off valve during refueling such that evaporative fuel is permitted to move from the holding portion to the canister, and that closes the first shut-off valve after refueling, and that also opens the second shut-off valve when the pressure inside the holding portion ...

Подробнее
Номер записи: 75
01-02-2018 дата публикации

EVAPORATIVE FUEL VAPOR EMISSION CONTROL SYSTEMS

Номер: US20180030871A1
Автор: Hiltzik Laurence H., McCrae Peter D., Miller James R., Williams Roger S.
Принадлежит:

An evaporative emission control canister system comprises an initial adsorbent volume having an effective incremental adsorption capacity at 25° C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and at least one subsequent adsorbent volume having an effective incremental adsorption capacity at 25° C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, an effective butane working capacity (BWC) of less than 3 g/dL, and a g-total BWC of between 2 grams and 6 grams. The evaporative emission control canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg at no more than 210 liters of purge applied after the 40 g/hr butane loading step. 1. An evaporative emission control canister system for a hybrid vehicle , including one or more canisters and comprising:a fuel-side adsorbent volume having an effective incremental adsorption capacity at 25° C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane; andat least one vent-side subsequent adsorbent volume having an effective incremental adsorption capacity at 25° C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, a butane working capacity (BWC) of less than 3 g/dL, and a g-total BWC of ≦6 grams,wherein the fuel-side adsorbent volume having an effective incremental adsorption capacity at 25° C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and the at least one subsequent adsorbent volume are located within a single canister, or in separate canisters that are connected to permit sequential contact by fuel vapor.2. The canister system of claim 1 , wherein the canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg as determined by the 2012 California Bleed Emissions Test Procedure (BETP).3. The canister system of claim 2 , ...

Подробнее
Номер записи: 76
01-02-2018 дата публикации

EVAPORATIVE EMISSIONS SYSTEM CHECK VALVE MONITOR FOR GTDI ENGINES

Номер: US20180030932A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for conducting a dual test monitor for the presence or absence of undesired evaporative emissions in a vehicle fuel system and evaporative emissions control system. In one example, the dual test monitor includes conducting an evaporative emissions test diagnostic procedure during both boosted and non-boosted conditions during a single drive cycle. In this way, results from the test diagnostic procedure conducted under boost conditions may be compared to the results of the test diagnostic procedure under non-boosted conditions, to unambiguously diagnose functionality of a plurality of components in the fuel system and evaporative emissions system, which may thus reduce undesired evaporative emissions. 1. A method for a vehicle comprising:evacuating a fuel system, including a fuel tank that supplies fuel to an engine, and an evaporative emissions system, including a fuel vapor storage canister for storing vapors from the tank, under a first condition and a second condition during a single drive cycle; anddiagnosing a plurality of fuel system and evaporative emissions system components based on a vacuum level reached during both the first and second conditions.2. The method of claim 1 , wherein the single drive cycle includes a duration of time between a key-on event and a key-off event.3. The method of claim 1 , wherein the first condition includes pressure in an intake manifold of the engine less than barometric pressure; andwherein the second condition includes pressure in the intake manifold of the engine greater than barometric pressure.4. The method of claim 3 , wherein evacuating the fuel system and evaporative emissions system further comprises:communicatively coupling the fuel system and evaporative emissions system to the intake manifold of the engine in the first condition; andcommunicatively coupling the fuel system and evaporative emissions system to an ejector in an ejector system of the vehicle, wherein the ejector ...

Подробнее
Номер записи: 77
01-02-2018 дата публикации

Canister valve device for vehicle

Номер: US20180030933A1
Автор: Chang Han Kim, Jae Hwa Park, Jung Su Park
Принадлежит: Hyundai Motor Co

A canister valve device for a vehicle that is equipped with a shutoff valve device connected to a pipe providing a passage for air to flow to a canister and selectively opening and closing the passage of the pipe, may include a diverging channel diverging from the passage of the pipe to a position where the shutoff valve device is positioned to provide a passage for a portion of air flowing to the pipe; and a check valve device positioned in the diverging channel, closing when the shutoff valve device closes, and opening when the shutoff valve device opens so that air is distributed to the pipe and the diverging channel, whereby negative pressure applied to the shutoff valve device is configured to be reduced by flow of the air.

Подробнее
Номер записи: 78
01-05-2014 дата публикации

EVAPORATED FUEL TREATMENT DEVICE

Номер: US20140116401A1
Автор: Horiba Ayumu, SHIKAMA Mahito
Принадлежит: HONDA MOTOR CO., LTD.

The objective of the present invention is to provide an evaporated fuel treatment device capable of performing a function diagnosis of a sealing valve with high accuracy even if an internal combustion engine is in operation. The evaporated fuel treatment device includes a sealing valve that blocks a fuel tank from the atmosphere, a canister, a canister internal pressure detection unit, a control part that performs an instruction for opening or closing the sealing valve and controls a purge, and a diagnostic part that performs a function diagnosis of an evaporated fuel sealing system including the fuel tank, the canister, and the sealing valve. The diagnostic part performs the function diagnosis of the sealing valve based on whether or not a canister internal pressure detected by the canister internal pressure sensor varies beyond a predetermined range. 1. An evaporated fuel treatment device , comprising:a sealing valve that is provided on a communication passage between an atmosphere and a fuel tank mounted on a vehicle having an internal combustion engine, and blocks the fuel tank from the atmosphere;a canister that is provided between the atmosphere and the sealing valve on the communication passage, and recovers evaporated fuel discharged through the communication passage from the fuel tank;a canister internal pressure detection unit that is provided on the canister side relative to the sealing valve on the communication passage, and detects a canister internal pressure in the canister;a control part that performs an instruction for opening or closing the sealing valve, and controls a purge; anda diagnostic part that performs a function diagnosis of an evaporated fuel sealing system including the fuel tank, the canister, and the sealing valve, whereinthe diagnostic part performs the function diagnosis of the sealing valve based on whether or not the canister internal pressure detected by the canister internal pressure detection unit varies beyond a predetermined ...

Подробнее
Номер записи: 79
01-05-2014 дата публикации

EVAPORATED-FUEL PROCESSING APPARATUS

Номер: US20140116402A1
Автор: Hidano Koichi, Horiba Ayumu, Kitamoto Masakazu, Kitamura Hiroshi, SHIKAMA Mahito, Watanabe Hiroaki
Принадлежит: HONDA MOTOR CO., LTD.

An evaporated-fuel processing apparatus including: a sealing valve which is arranged in a communication path between the atmosphere and a fuel tank mounted on a vehicle having an internal combustion engine, and shuts an internal space of the fuel tank off from the atmosphere; an open/close member which covers a fuel filling port of the fuel tank; a refueling-intention-information acquisition unit which acquires information indicating an intention of refueling; and a control unit which issues an opening command for opening the sealing valve when the refueling-intention-information acquisition unit acquires the information indicating an intention of refueling, and allows the open/close member to open when a time elapsed from the moment at which the opening command is issued exceeds a first predetermined time. 1. An evaporated-fuel processing apparatus comprising:a sealing valve which is arranged in a communication path between atmosphere and a fuel tank mounted on a vehicle having an internal combustion engine, and shuts an internal space of the fuel tank off from the atmosphere;an open/close member which covers a fuel filling port of the fuel tank;a refueling-intention-information acquisition unit which acquires information indicating an intention of refueling; anda control unit which issues an opening command for opening the sealing valve when the refueling-intention-information acquisition unit acquires the information indicating an intention of refueling, and allows the open/close member to open when a time elapsed from a moment at which the opening command is issued exceeds a first predetermined time.2. The evaporated-fuel processing apparatus according to claim 1 , further comprising a tank-internal-pressure detection unit which detects internal pressure of the fuel tank claim 1 , wherein the control unit allows the open/close member to open when the internal pressure of the fuel tank converges in a predetermined pressure range and the time elapsed from the ...

Подробнее
Номер записи: 80
05-02-2015 дата публикации

CLOSED TANK SYSTEM

Номер: US20150034175A1
Автор: Boecker Albert J., Ehler Alex, Gmuend Patrick, Grauer Peter, Hersel Walter B., Michaelis Gerrit A., Olbrich Matthias B.
Принадлежит:

In at least some implementations, a fuel tank includes a tank body defining a chamber adapted to receive liquid fuel therein, a reinforcement for the tank body to permit the pressure within the chamber to exceed the vapor pressure of a fuel to be received within the chamber, and an inlet to the tank body through which fuel is added to the chamber. The inlet is configured to mate with a refueling nozzle through which fuel is added to the chamber to permit refueling the tank and maintaining the pressure in the chamber above atmospheric pressure. 1. A fuel tank , comprising:a tank body defining a chamber adapted to receive liquid fuel therein, and a reinforcement for the tank body to permit the pressure within the chamber to exceed the vapor pressure of a fuel to be received within the chamber; andan inlet to the tank body through which fuel is added to the chamber, the inlet configured to mate with a refueling nozzle through which fuel is added to the chamber to permit refueling the tank and maintaining the pressure in the chamber above atmospheric pressure.2. The fuel tank of wherein the inlet is defined in a fill pipe that extends from the tank body and communicates with the chamber.3. The fuel tank of which also includes a pressure relief valve that permits flow therethrough when a pressure within the tank exceeds a threshold pressure.4. The fuel tank of which also includes a valve adapted to limit the maximum level of fuel that may be received within the chamber.5. The fuel tank of which also includes a vapor canister selectively communicated with the chamber and a valve disposed upstream of the vapor canister to selectively permit fluid flow from the chamber to the vapor canister claim 1 , the valve being open during a refueling event when fuel is added to the chamber and closed at other times to prevent fluid flow to the vapor canister.6. The fuel tank of which also includes a fill level valve adapted to limit the maximum level of fuel that may be received ...

Подробнее
Номер записи: 81
31-01-2019 дата публикации

SECONDARY SYSTEM AND METHOD FOR CONTROLLING AN ENGINE

Номер: US20190032580A1
Автор: Dudar Aed M.
Принадлежит:

Systems and methods for operating an engine in response to a condition of an engine air intake throttle being degraded are presented. In one example, the engine air intake throttle is held closed while a position of a fuel vapor storage canister vent valve is adjusted to control air flow into the engine based on a position of an accelerator pedal. In this way, the engine air amount may be adjusted to provide additional torque from an engine while a throttle is degraded. 1. An engine control method , comprising:operating an engine with direct fuel injection configured to receive purge vapors from a fuel vapor storage canister or fuel tank, with a blocking valve positioned between the canister and tank; andopening a fuel vapor storage canister vent valve and closing the vapor blocking valve via a controller in response to an indication of degradation of a throttle that regulates air flow from an engine air intake filter to cylinders of the engine, the throttle adjusted to restrict airflow to less than a threshold amount in response to said indication of degradation.2. The method of claim 1 , wherein the purge vapors from the canister to the engine are regulated via a canister purge valve.3. The method of claim 2 , wherein the canister purge valve is opened and closed at a frequency and duty cycle so that the CPV is open an average amount.4. The method of claim 3 , where the fuel vapor canister vent valve is positioned along a conduit extending between atmosphere and a fuel vapor storage canister.5. The method of claim 3 , where the fuel tank vapor blocking valve is positioned along a conduit extending between a fuel tank and a fuel vapor storage canister.6. The method of claim 3 , further comprising closing the throttle via the controller in response to the indication of degradation.7. The method of claim 6 , further comprising not opening the throttle via the controller in response to a position of an accelerator pedal while indicating degradation of the throttle.8. ...

Подробнее
Номер записи: 82
04-02-2021 дата публикации

EVAPORATIVE EMISSION CONTROL SYSTEM FOR A VEHICLE

Номер: US20210033047A1
Автор: SHINABERRY Kyle, Taylor Mike
Принадлежит:

An evaporative emission control system for a vehicle includes an engine, a fuel tank connected to the engine and a reversible purge pump connected between the fuel tank and the engine. Fuel vapor generated in the fuel tank is supplied to the engine. The purge pump is operable in a first direction to supply the fuel vapor from the fuel tank to the engine and a second direction to supply air to the fuel tank. A purge control valve is connected between the reversible purge pump and the engine to control a flow of the fuel vapor to the engine. 1. An evaporative emission control system for a vehicle , comprising:an engine;a fuel tank connected to the engine, fuel vapor generated in the fuel tank being supplied to the engine;a reversible purge pump connected between the fuel tank and the engine, the reversible purge pump being operable in a first direction to supply the fuel vapor from the fuel tank to the engine and a second direction to supply air to the fuel tank;a purge control valve connected between the reversible purge pump and the engine to control a flow of the fuel vapor to the engine; anda mass air flow sensor disposed in an engine intake, a fault with the reversible purge pump or the purge control valve being detected when the mass air flow sensor does not detect air flow when the reversible purge pump is operated in the second direction.2. The evaporative emission control system according to claim 1 , whereina canister is disposed between the fuel tank and the reversible purge pump to store the fuel vapor exhausted from the fuel tank.3. The evaporative emission control system according to claim 2 , whereina controller connected to the purge control valve is configured to open the purge control valve to supply the fuel vapor from the canister to the engine.4. The evaporative emission control system according to claim 2 , whereina pressure sensor is connected to the canister to determine a pressure of the evaporative emission control system.5. The evaporative ...

Подробнее
Номер записи: 83
04-02-2021 дата публикации

Fuel Vapor Processing Apparatus

Номер: US20210033048A1
Автор: Masahiro Kobayashi, Masatoshi MORlYAMA
Принадлежит: Aisan Industry Co Ltd

A fuel vapor processing apparatus includes a case having a passage. In addition, the case has a tank port and a purge port in fluid communication with one end of the passage. Further, the case includes an atmosphere port in fluid communication with another end of the passage. The passage has a first layering and a second layering filled with an adsorbent and arranged in series. The first layering includes an upper adsorption layer, a middle adsorption layer, and a lower adsorption layer arranged in series. The upper adsorption layer and the lower adsorption layer are filled with a first adsorbent. The middle adsorption layer is filled with a second adsorbent. The ventilation resistance of the middle adsorption layer due to the second adsorbent is greater than the ventilation resistance of the upper adsorption layer and the lower adsorption layer due to the first adsorbent.

Подробнее
Номер записи: 84
09-02-2017 дата публикации

FUEL TANK ISOLATION VALVE HAVING BYPASS CONFIGURATION

Номер: US20170036531A1
Автор: Ambrose Steven Lee, Huseyin Mustafa, McLauchlan Raymond Bruce, Smith Jeffrey Bernard
Принадлежит: EATON CORPORATION

A fuel tank system constructed in accordance to one example of the present disclosure includes a fuel tank, a purge canister, a valve assembly and a bypass means. The valve assembly can be fluidly coupled between the fuel tank and the purge canister and that selectively controls fuel vapor flow between the fuel tank and the purge canister. The bypass means can selectively bypass fuel vapor around at least a portion of the valve assembly from the fuel tank to the purge canister. The bypass means can include a bypass valve. 1. A fuel tank system comprising:a fuel tank;a purge canister;a valve assembly that is fluidly coupled between the fuel tank and the purge canister and that selectively controls fuel vapor flow between the fuel tank and the purge canister; anda bypass means that selectively bypasses fuel vapor around at least a portion of the valve assembly from the fuel tank to the purge canister.2. The fuel tank system of wherein the bypass means comprises a bypass valve.3. The fuel tank system of wherein the valve assembly comprises an over-pressure relief valve having a piston and a seal that collectively translate relative to a seat between open and closed positions.4. The fuel tank system of wherein the bypass means comprises a pushpin that is selectively movable to urge the seal of the over-pressure relief valve off of the corresponding seat.5. The fuel tank system of wherein the valve assembly is disposed in a housing and wherein the pushpin is enclosed in a flexible diaphragm that sealingly encloses the pushpin claim 4 , the pushpin biased toward a closed position.6. The fuel tank system of wherein the bypass means comprises an over-pressure relief valve having a seal formed of magnetic material claim 1 , the seal selectively engaging a corresponding seat in a closed position.7. The fuel tank system of wherein the seal is selectively urged away from the corresponding seat upon a magnet being placed proximate to the seal.8. The fuel tank system of wherein ...

Подробнее
Номер записи: 85
09-02-2017 дата публикации

Tank sealing valve and evaporation fuel processing device including the same

Номер: US20170036532A1
Автор: Yuichiro Miura
Принадлежит: Denso Corp

A tank sealing valve arranged in a passage network through which a fluid flows between a fuel tank and a canister includes a first valve unit and a second valve unit. A first port and a second port of three ports included in an outer case body of the first valve unit are open toward a first chamber of two chambers divided by a diaphragm or a bellows of the first valve unit, and a third port of the three ports is open toward a second chamber of the two chambers. A valve body of the first valve unit includes a through passage penetrating a valve portion and a column portion of the valve body. The valve portion communicates with the first port and the second chamber through the through passage in a case where the first port is closed. The second valve unit opens and closes the third port.

Подробнее
Номер записи: 86
11-02-2016 дата публикации

VAPORIZED FUEL PROCESSING APPARATUS

Номер: US20160040631A1
Автор: MANI Takashi
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

A vaporized fuel processing apparatus for a vehicle having a fuel tank has a casing filled with an adsorbent and having a first outer surface. The casing has first ribs protruding from the first outer surface and extending without intersecting with each other. The casing has at least one second rib protruding from the first outer surface. At least one pair of the first ribs adjacent to each other are connected with each other via one of the second ribs only. The other pairs of the first ribs adjacent to each other are connected with each other via one of the second ribs only or are not connected with each other via any one of the second ribs. 1. A vaporized fuel processing apparatus for a vehicle having a fuel tank , the vaporized fuel processing apparatus comprising:a casing filled with an adsorbent and having a first outer surface;wherein the casing has first ribs protruding from the first outer surface and extending without intersecting with each other;wherein the casing has at least one second rib protruding from the first outer surface,wherein at least one pair of the first ribs adjacent to each other are connected with each other via one of the second ribs; andwherein the other pairs of the first ribs adjacent to each other are connected with each other via one of the second ribs only or are not connected with each other via any one of the second ribs.2. The vaporized fuel processing apparatus according to claim 1 ,wherein all of the first ribs are connected via one of the second ribs only.3. The vaporized fuel processing apparatus according to claim 1 ,wherein the casing is configured that when the vaporized fuel processing apparatus is mounted on the vehicle, the first outer surface is directed upward.4. The vaporized fuel processing apparatus according to claim 3 ,wherein the casing has a second outer surface opposite to the first outer surface and has a lattice shaped rib protruding from the second outer surface.5. The vaporized fuel processing apparatus ...

Подробнее
Номер записи: 87
09-02-2017 дата публикации

SYSTEMS AND METHODS FOR DISCERNING FUEL TANK PRESSURE TRANSDUCER DEGRADATION

Номер: US20170037806A1
Автор: Dudar Aed M.
Принадлежит:

A method for a fuel system is provided, wherein a fuel vapor canister is vented to an engine intake during a first condition, and wherein a restriction in a canister vent pathway is indicated, responsive to a change in a fuel tank pressure transducer output greater than a threshold. If the fuel tank pressure transducer output changes less than the threshold, degradation of the fuel tank pressure transducer is indicated. In this way, a fuel tank pressure transducer offset may be distinguished from a canister vent pathway restriction if a fuel tank pressure transducer indicates a significant pressure or vacuum in a fuel tank following a vehicle-off soak. 1. A method for a fuel system , comprising:during a first condition, venting a fuel vapor canister to an engine intake; andindicating a restriction in a canister vent pathway responsive to a change in a fuel tank pressure transducer output greater than a threshold.2. The method of claim 1 , further comprising:updating one or more fuel system parameters responsive to an indication of a restriction in the canister vent pathway.3. The method of claim 2 , wherein the one or more fuel system parameters include a fuel canister purge schedule.4. The method of claim 1 , further comprising:indicating degradation of a fuel tank pressure transducer responsive to a change in a fuel tank pressure transducer output less than a threshold.5. The method of claim 4 , further comprising:updating one or more fuel system parameters responsive to an indication of degradation of a fuel tank pressure transducer.6. The method of claim 4 , wherein the first condition comprises:a fuel tank pressure transducer output more than a threshold different from atmospheric pressure.7. The method of claim 6 , wherein the first condition follows a vehicle-off soak comprising a duration greater than a threshold.8. The method of claim 7 , wherein the vehicle-off soak further comprises a canister vent valve in an open conformation and a canister purge valve ...

Подробнее
Номер записи: 88
08-02-2018 дата публикации

METHOD OF SWITCHING FROM A PRESSURIZED TO NON-PRESSURIZED FUEL SYSTEM WHEN AN EVAPORATIVE EMISSIONS LEAK IS DETECTED

Номер: US20180038303A1
Автор: Memmer Matthew
Принадлежит: EATON CORPORATION

A method of operating a fuel tank system in a non-hybrid vehicle is provided. The fuel tank system has a fuel tank, a carbon canister, a canister vent valve, a vapor management valve and an isolation valve fluidly connected between the fuel tank and the carbon canister. The fuel tank system is operated in a pressurized mode wherein the fuel tank is pressurized and the isolation valve is closed. The method determines whether a leak has been detected. The fuel tank system is operated in a non-pressurized mode based on the leak being detected. 1. A method of operating a fuel tank system in a non-hybrid vehicle , the fuel tank system having a fuel tank , a carbon canister , a canister vent valve , a vapor management valve and an isolation valve fluidly connected between the fuel tank and the carbon canister , the method comprising:operating the fuel tank system in a pressurized mode wherein a fuel tank of the fuel tank system is pressurized and the isolation valve is closed;determining whether a leak has been detected; andoperating the fuel tank system in a non-pressurized mode based on the leak being detected.2. The method of wherein operating the fuel tank system in the non-pressurized mode comprises:opening the isolation valve based on a leak being detected.3. The method of wherein operating the fuel tank system in the non-pressurized mode comprises:opening the canister vent valve permitting vapor to flow out of the carbon canister and through the canister vent valve.4. The method of wherein operating the fuel tank system in the non-pressurized mode comprises:opening the vapor management valve wherein vapor is permitted to flow out of the carbon canister and through the vapor management valve to an engine.5. The method of wherein operating the fuel tank system in the non-pressurized mode further includes illuminating a malfunction indicator lamp.6. The method of wherein operating the fuel tank system in the non-pressurized mode further includes changing an engine ...

Подробнее
Номер записи: 89
08-02-2018 дата публикации

MULTI-STAGE CHECK VALVE FOR VAPOR RECIRCULATION LINE OF LIQUID CONTAINMENT SYSTEM

Номер: US20180038320A1
Автор: Andrzejewski Jason M., Miller Marvin H., Spry Timothy J., Waples Jon J.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Disclosed herein are liquid containment systems, methods for making such systems, and vehicle fuel storage systems having vapor recirculation capabilities. Presented is a liquid containment system for stowing hydrocarbon-based liquids. This system includes a vapor canister coupled to a liquid container to receive hydrocarbon vapor from the container. A fill conduit coupled to the container has an opening for receiving a fill nozzle. A vapor recirculation transmits vapor from the container to the fill conduit. A multi-stage check valve, which is coupled to the container and recirculation conduit, has a housing and a plunger with a bleed hole. The plunger seats against the housing such that vapor passes from the container through the bleed hole to the fill conduit via the recirculation conduit. Responsive to increased in-tank pressure, the plunger unseats from the housing such that vapor passes through the bleed hole and around the plunger to the fill conduit. 1. A liquid containment system for stowing a hydrocarbon-based liquid discharged from a fill nozzle , the liquid containment system comprising:a liquid container configured to stow therein the hydrocarbon-based liquid;a vapor canister fluidly coupled to the liquid container and configured to receive and store hydrocarbon vapor from the hydrocarbon-based liquid stowed in the liquid container;a fill conduit fluidly coupled to the liquid container, the fill conduit having an open end configured to receive the hydrocarbon-based liquid from the fill nozzle;a vapor recirculation conduit fluidly coupled to the liquid container and to the fill conduit proximate the open end thereof, the vapor recirculation conduit being configured to transmit hydrocarbon vapor from the liquid container to the fill conduit; anda multi-stage check valve assembly fluidly coupled to the liquid container and the vapor recirculation conduit, the check valve assembly having a housing and a plunger with a bleed hole, the plunger being movable ...

Подробнее
Номер записи: 90
07-02-2019 дата публикации

FUEL VAPOR PROCESSING DEVICE

Номер: US20190040821A1
Автор: ISHIHARA Keiichirou, ITOH Tomohiro
Принадлежит:

A fuel vapor processing device includes a three-way valve having a common valve chamber in which a first valve body, a second valve body, and a third valve body are housed. A single pressure sensor is provided in the common valve chamber. The first valve body enables communication between the common valve chamber and a first valve chamber. The second valve body enables communication between the common valve chamber and a second valve chamber communicating with an inside of the canister. The third valve body enables communication between the common valve chamber and a third valve chamber communicating with an inside of a fuel tank. An ECU controls the three-way valve and a switching valve, and controls driving of a pump to perform fuel vapor leak diagnosis for the fuel tank and the canister, based on a detection value detected by the pressure sensor. 1. A fuel vapor processing device comprising:a canister that absorbs a fuel vapor discharged from a fuel tank mounted on a vehicle;a switching valve provided in an atmosphere path that communicatively connects the canister and an atmosphere, the switching valve switching between a state where the canister is communicatively connected to the atmosphere, and a state where the canister is isolated from the atmosphere;a pressurizing/depressurizing unit that pressurizes or depressurizes at least any one of the fuel tank, the canister, and a bypass path that extends from the atmosphere path while bypassing the switching valve, and has an orifice at an intermediate position of the bypass path;a valve mechanism unit including a common valve chamber that houses a first valve body, a second valve body, and a third valve body;a pressure detection unit provided in the common valve chamber; anda control unit that controls the valve mechanism unit and the switching valve, and controls the pressurizing/depressurizing unit to perform fuel vapor leak diagnosis for the fuel tank and the canister, based on a detection value detected by the ...

Подробнее
Номер записи: 91
07-02-2019 дата публикации

SYSTEMS AND METHODS FOR DIAGNOSING A VEHICLE FUEL SYSTEM AND EVAPORATIVE EMISSIONS CONTROL SYSTEM

Номер: US20190040822A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for conducting an engine-off-natural-vacuum (EONV) test diagnostic on a vehicle fuel system and evaporative emissions system. In one example, a method may include setting an initial vent duration for the EONV test as a function of a likelihood that the vehicle will pass the EONV test during a pressure phase portion, or during a vacuum phase portion, and commencing the EONV test with the vacuum phase portion responsive to the likelihood that the vehicle will pass during the vacuum phase portion. In this way, battery power may be conserved and fuel economy improved, by avoiding a pressure phase portion of the EONV test if it is indicated that the vehicle is not expected to pass the EONV test during the pressure phase portion. 1. A method comprising:setting an initial vent duration for an engine-off-natural-vacuum test as a function of a likelihood that a vehicle will pass the engine-off-natural-vacuum test during a pressure phase portion, or during a vacuum phase portion; andcommencing the engine-off-natural-vacuum test with the vacuum phase portion responsive to the likelihood the vehicle will pass during the vacuum phase portion.2. The method of claim 1 , wherein commencing the engine-off-natural-vacuum test with the vacuum phase portion further comprises not conducting the pressure phase portion of the engine-off-natural-vacuum test claim 1 , regardless of whether the vehicle passes the vacuum phase portion or not.3. The method of claim 1 , wherein responsive to the likelihood that the vehicle will pass the engine-off-natural-vacuum test during the pressure phase portion claim 1 , commencing the engine-off-natural-vacuum test with the pressure phase portion claim 1 , and then subsequently conducting the vacuum phase portion responsive to the vehicle not passing during the pressure phase portion.4. The method of claim 1 , wherein passing the engine-off-natural-vacuum test during the pressure phase portion further comprises pressure ...

Подробнее
Номер записи: 92
07-02-2019 дата публикации

METHODS AND SYSTEM FOR CONTROLLING ENGINE AIRFLOW WITH AN AUXILIARY THROTTLE ARRANGED IN SERIES WITH A VENTURI AND IN PARALLEL WITH A MAIN INTAKE THROTTLE

Номер: US20190040823A1
Автор: Hall Brent Alan, Pursifull Ross Dykstra
Принадлежит:

Methods and systems are provided for progressively opening and controlling each of a fuel vapor canister purge valve (CPV), an auxiliary throttle coupled in series with a venturi, and a main intake throttle arranged in parallel with the auxiliary throttle in order to deliver a desired intake airflow or manifold vacuum to an engine intake manifold. In one example, a method may include actuating a CPV to supply airflow to the engine via a fuel vapor canister while holding closed a main throttle and an auxiliary throttle arranged in parallel with the main throttle and in series with a venturi. The method further includes progressively opening the CPV, then the auxiliary throttle, and then the main throttle to achieve a desired intake manifold pressure. 1. A method for an engine , comprising:actuating a canister purge valve (CPV) to supply airflow to the engine via a fuel vapor canister while holding closed a main throttle and an auxiliary throttle arranged in parallel with the main throttle and in series with a venturi; andas a desired intake manifold pressure increases, progressively opening the CPV, then the auxiliary throttle, and then the main throttle to achieve the desired intake manifold pressure, wherein the venturi is an ejector, wherein the auxiliary throttle is coupled upstream of a motive flow inlet of the ejector and the CPV is coupled upstream of an entraining inlet of the ejector, and wherein progressively opening the CPV, then the auxiliary throttle, and then the main throttle includes not opening the auxiliary throttle until the CPV is fully open and not opening the main throttle until both the CPV and the auxiliary throttle are fully open.2. The method of claim 1 , wherein the actuating the CPV to supply airflow to the engine via the fuel vapor canister is responsive to an engine idle condition and wherein the desired intake manifold pressure is a desired intake manifold vacuum.3. The method of claim 2 , further comprising claim 2 , in response to an ...

Подробнее
Номер записи: 93
07-02-2019 дата публикации

FUEL VAPOR PROCESSING DEVICE

Номер: US20190041292A1
Автор: ISHIHARA Keiichirou, ITOH Tomohiro, KISHI Ryoyu, MIURA Yuichiro
Принадлежит:

A fuel vapor processing device includes a canister, a first purge pipe that forms a first purge path that communicatively connects the inside of the canister and the inside of a fuel tank, a pressure pipe that forms a pressure detection path configured to communicatively connect a first switching valve and a pump, the first switching valve, a sealing valve disposed in the first purge pipe and configured to isolate the inside of the canister from the inside of the fuel tank, a differential pressure sensor, and an ECU. The differential pressure sensor is capable of detecting a difference between a pressure of the first purge path and a pressure of the pressure detection path. The ECU determines presence or absence of a fuel vapor leak while controlling the first switching valve, the pump, and the sealing valve based on a signal output from the differential pressure sensor. 1. A fuel vapor processing device configured to recover fuel vapor generated in a fuel tank that stores fuel of an internal combustion engine , the fuel vapor processing device comprising:a canister that includes an absorbent configured to absorb fuel vapor generated in the fuel tank;a fuel vapor path member that forms a fuel vapor path that communicatively connects the canister and the fuel tank;a canister path member that forms a canister path that communicates with the canister;an atmosphere path member that forms an atmosphere path that communicates with an atmosphere;a pressure detection path member that forms a pressure detection path configured to communicate with the canister path;a first switching valve configured to switch between communication between the canister path and the pressure detection path and communication between the canister path and the atmosphere path;a pressurizing/depressurizing unit configured to depressurize or pressurize an inside of the canister when the first switching valve communicatively connects the canister path and the pressure detection path;a bypass path ...

Подробнее
Номер записи: 94
19-02-2015 дата публикации

AIR INTAKE DUCT ICE INGESTION FEATURES

Номер: US20150047615A1
Автор: BISHOP CHRISTOPHER B., Rollins Scott M.
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

An engine system including an air intake duct positioned upstream of an engine cylinder may include an ice ingestion feature for retaining condensation. An ice ingestion feature may include indents formed in the bottom of an air intake duct wall. As such, the ice ingestion feature may include compartments and/or grooves of varying depths, widths, and/or angles such that the ice retention rate may be based on the surface area of the compartment or grooves. 1. An engine air intake duct , comprising:an air intake duct wall including an ice ingestion feature positioned at a bottom of an engine air intake duct wall; anda positive crankcase ventilation outlet coupled to the air intake duct wall upstream from the ice ingestion feature.2. The engine air intake duct of claim 1 , wherein the air intake duct wall includes an inner surface claim 1 , and wherein the ice ingestion feature is formed by an indent extending away from the inner surface vertically downward claim 1 , the a top of the indent flush with the inner surface and not extending vertically upward past the inner surface into an engine air path of the air intake duct.3. The engine air intake duct of claim 2 , wherein the wall includes a plurality of the indents claim 2 , at least two of which contain a different volume.4. The engine air intake duct of claim 3 , wherein the plurality of indents are formed by a plurality of compartments claim 3 , some of which are angled against a flow direction and some of which are angled with a flow direction of engine air path.5. The engine air intake duct of claim 2 , wherein the indent includes an aperture positioned in the intake duct wall.6. The engine air intake duct of claim 3 , wherein the plurality of indents each include an aperture positioned in the intake duct wall claim 3 , with at least one aperture having a larger area than at least on other aperture.7. The engine air intake duct of claim 4 , wherein at least some compartments narrow as they extend vertically ...

Подробнее
Номер записи: 95
16-02-2017 дата публикации

METHOD AND SYSTEM FOR HIGH FUEL VAPOR CANISTER PURGE FLOW

Номер: US20170045007A1
Автор: Pursifull Ross Dykstra
Принадлежит:

Methods and systems are provided for managing fuel vapors in a vehicle fuel system. In one example, a method includes commanding or maintaining closed a vapor blocking valve during a purging operation such that vapor flow is directed from a fuel tank to a fresh air side of a vapor canister via a first restricted vapor line, thereby enabling high purge flow rates and deep vapor canister vacuum while avoiding fuel tank vacuum. In this way, canister purge operation may be made more efficient, thereby reducing hydrocarbon bleed emissions. 1. A method for an engine , comprising:during a first condition, closing a vacuum blocking valve (VBV) and directing vapor flow from a fuel tank to a fresh air side of a vapor canister via a first vapor line; andduring a second condition, opening the VBV and directing vapor flow from the fuel tank to a load/purge side of the vapor canister via a second vapor line.2. The method of claim 1 , wherein directing vapor flow via the first vapor line comprises directing vapor flow through a restriction in the first vapor line.3. The method of claim 2 , wherein the restriction is comprised of an orifice or a sonic choke.4. The method of claim 2 , wherein an overall vapor line bifurcates upstream of the restriction into the first vapor line and second vapor line claim 2 , wherein the VBV is positioned in the second vapor line.5. The method of claim 1 , wherein the first condition comprises engine operation.6. The method of claim 1 , wherein the first vapor line does not couple the fuel tank to the load/purge side of the vapor canister.7. The method of claim 1 , wherein the first condition comprises a canister purge event.8. The method of claim 7 , wherein the vapor canister is divided into the fresh air side and the load/purge side by a partition housed within the canister claim 7 , the fresh air side further including a vent line connected to fresh air via a canister vent valve (CVV) claim 7 , the load/purge side connected to an intake manifold ...

Подробнее
Номер записи: 96
16-02-2017 дата публикации

SYSTEM AND METHODS FOR REGULATING FUEL VAPOR FLOW IN A FUEL VAPOR RECIRCULATION LINE

Номер: US20170045019A1
Автор: Dudar Aed M., Pearce Russell Randall, Yang Dennis Seung-Man
Принадлежит:

Methods and systems are provided for regulating the flow of fuel vapors exiting a fuel tank. In one example, a method for an engine may include adjusting an amount of fuel vapors flowing through a fuel vapor recirculation line, where the recirculation line may be coupled on a first end to a fuel tank and on an opposite second end to a fuel fill inlet. The valve may be adjusted to a more open position to increase fuel vapor flow through the recirculation line in response to increases in hydrocarbon emissions from a fuel vapor canister, and to a more closed position to reduce fuel vapor flow through the recirculation line in response to increases in hydrocarbon emissions from the fuel fill inlet. 1. A method for an engine comprising:adjusting an amount of fuel vapors flowing through a fuel vapor recirculation line, the line coupled on a first end to a fuel tank and on an opposite second end to a fuel fill inlet, by adjusting a position of a variable orifice valve positioned within the recirculation line, via an electronic controller.2. The method of claim 1 , wherein the adjusting is based on one or more of a fuel tank pressure claim 1 , canister loading claim 1 , fuel dispense rate claim 1 , a first hydrocarbon emission level from a fresh air vent coupled to a fuel vapor canister claim 1 , and a second hydrocarbon emissions level from the fuel fill inlet.3. The method of claim 2 , wherein the fuel tank pressure claim 2 , fuel dispense rate claim 2 , and fuel level are estimated based on outputs from a pressure sensor coupled between the fuel tank and the canister claim 2 , and configured to measure a pressure in said fuel tank.4. The method of claim 2 , where the first hydrocarbon emission level is estimated based on outputs from a first hydrocarbon sensor positioned in the fresh air vent claim 2 , and where the second hydrocarbon emission level is estimated based on outputs from a second hydrocarbon sensor positioned in the fuel fill inlet.51. The method of claim 2 ...

Подробнее
Номер записи: 97
15-02-2018 дата публикации

Fuel vapor processing system

Номер: US20180045127A1
Автор: Yuichiro Miura
Принадлежит: Denso Corp

The present disclosure provides a fuel vapor processing system. The system includes a tank passage, a canister, a purge passage, an air passage, a purge valve, a controller, a fuel vapor processing portion, a pressure sensor, a fuel refill detecting portion, and an abnormality detecting portion. The fuel refill detecting portion detects that fuel refill to the fuel tank is started or fuel refill to the fuel tank is being performed by executing a fuel refill detecting process. An abnormality detecting portion detects, by executing an abnormality detecting process, a clogged situation where the tank passage is clogged based on a signal from the pressure sensor received after the fuel refill detecting portion detected that the fuel refill to the fuel tank was started.

Подробнее
Номер записи: 98
15-02-2018 дата публикации

METHOD AND SYSTEM FOR FUEL VAPOR MANAGEMENT

Номер: US20180045128A1
Автор: Kragh Niels Christopher, Pursifull Ross Dykstra
Принадлежит:

Methods and systems are provided for improving the efficiency of canister purge completion. Based on engine operating conditions, a canister is purged to a compressor inlet or a throttle outlet. During purging conditions, as canister loads change, a purge flow through the canister is varied so that a fixed preselected portion of total engine fueling is delivered as fuel vapors. 1. A method of canister purging comprising:controlling an air flow rate into an engine to achieve an operator demand for power, the air flow rate provided from a compressor or from induction by the engine through a throttle; and controlling flow of a purge mixture when said fuel vapor flow rate reaches a preselected proportion of fuel flow rate and fuel vapor flow rate, including maintaining a fuel vapor fraction of the total engine fuel as engine fueling changes with load even if a higher purge flow rate is possible.2. The method of claim 1 , further comprising claim 1 , purging a mixture of fuel vapors and ambient air from a fuel vapor storage canister claim 1 , and dependent upon engine operating conditions claim 1 , routing said purged mixture into a position upstream of said air compressor.3. The method of claim 1 , further comprising claim 1 , purging a mixture of fuel vapors and ambient air from a fuel vapor storage canister claim 1 , and dependent upon engine operating conditions claim 1 , routing said purged mixture into a position downstream of said compressor.4. The method of claim 1 , further comprising claim 1 , determining fuel vapor flow rates downstream or upstream of said compressor from an indication of flow rate of said purge mixture and an indication of fuel vapor content of said purge mixture; and delivering the fuel to the engine at a rate to achieve a substantially stoichiometric air-fuel ratio of a total of said controlled air flow entering said engine and said ambient air in said purge mixture entering said engine to a total of said liquid fuel and said fuel vapor ...

Подробнее
Номер записи: 99
15-02-2018 дата публикации

METHODS AND SYSTEMS FOR EVAPORATIVE EMISSIONS CONTROL

Номер: US20180045143A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for reducing evaporative emissions from a vehicle by performing a fine leak test at a vehicle assembly plant. Fuel tank pressure generated after a green tank fueling event is monitored as the vehicle moves along an assembly line. A leak is determined based on a rate of pressure bleed-up over the duration, and accordingly the vehicle is directed to a repair station. 1. A method , comprising:on only a first initial fuel tank filling event while a vehicle is on an assembly line, with no prior fuel filling event,filling the fuel tank to a threshold level; andsealing the fuel tank; andindicating degradation of a fuel system based on a change in fuel tank pressure while the vehicle moves along the assembly line.2. The method of claim 1 , wherein the first initial fuel tank filling event is a first filling event from an initial assembly of the vehicle claim 1 , and wherein the threshold level is based on a target fuel tank pressure at the sealing.3. The method of claim 1 , wherein sealing the fuel tank includes sealing the fuel tank from atmosphere by closing a vent valve of the fuel system claim 1 , and sealing the fuel tank from an engine by closing a purge valve of the fuel system.4. The method of claim 3 , wherein the engine is maintained shutdown during the fuel tank filling event and while the vehicle moves along the assembly line.5. The method of claim 4 , wherein filling the fuel tank is performed at a first station of the assembly line claim 4 , the method further comprising claim 4 , in response to the vehicle arriving at a second claim 4 , different station of the assembly line claim 4 , unsealing the fuel tank by opening the purge valve and the vent valve claim 4 , and performing a first combustion event in the engine since the initial assembly of the vehicle.6. The method of claim 5 , wherein the indicating includes:in response to a rate of pressure bleed-down between the first station and the second station being higher than a ...

Подробнее
Номер записи: 100