Systems and methods of monitoring fuel consumption in an environmental-control unit

A system for determining a fuel consumption of a transportable environmental-control unit. The system includes a sensor and a controller. The sensor is configured to sense an amount of fuel in a tank. The controller is configured to receive an indication of the amount of fuel in the tank from the sensor, monitor and filter the indication of the amount of fuel received from the sensor for a first period of time, monitor and filter the indication of the amount of fuel received from the sensor for a second period of time, and determine a quantity of fuel used between an end of the first period of time and an end of the second period of time.

Internal combustion engine control apparatus

There is obtained an internal combustion engine control apparatus that can accurately determine the state of coupling between an internal combustion engine and a driving device so as to appropriately control the internal combustion engine. An internal combustion engine control apparatus according to the present invention includes a reference value learning function that learns a real calculation value, as the reference learning value for a transmission gear, when there are satisfied a first condition that the vehicle speed detected by a vehicle speed sensor, the real rotation speed detected by a rotation sensor, and the throttle opening degree detected by a throttle opening degree sensor are in predetermined ranges and a second condition that the real calculation value indicating the ratio of the vehicle speed detected by the vehicle speed sensor to the real rotation speed detected by the rotation sensor is in a predetermined state.

Diesel Fuel Supply Circuit

A diesel fuel supply circuit comprises a diesel engine ( 100 ); a fuel cooler ( 104 ); a fuel tank ( 102 ), and a valve ( 114 ). The valve ( 114 ) is operable to move the fuel cooler ( 104 ) from ( 1 ) a position within the circuit in which it cools fuel leaving the diesel engine ( 100 ) and going to the fuel tank ( 102 ) to ( 2 ) a position in which it cools fuel leaving the fuel tank ( 102 ) and going to the diesel engine ( 100 ) and vice versa.

FUEL SUPPLY SYSTEM

A fuel supply system includes a fuel pump having a bottom inlet end configured to pick up fuel and a top discharge end configured to discharge fuel at a pressure higher than that of the inlet end. A housing defines a pressure vessel in fluid communication with the discharge end of the fuel pump. The fuel pump is secured with respect to the housing so that the pressure vessel is laterally adjacent the fuel pump and the pressure vessel and the fuel pump have overlapping heights. Exactly one check valve is positioned between the discharge end of the fuel pump and the pressure vessel, and the check valve is spaced laterally away from the discharge end of the fuel pump at an inlet to the pressure vessel. 1. A fuel supply system comprising:a fuel pump having a bottom inlet end configured to pick up fuel and a top discharge end configured to discharge fuel at a pressure higher than that of the inlet end;a housing defining a pressure vessel in fluid communication with the discharge end of the fuel pump, the fuel pump being secured with respect to the housing so that the pressure vessel is laterally adjacent the fuel pump and the pressure vessel and the fuel pump have overlapping heights; andexactly one check valve positioned between the discharge end of the fuel pump and the pressure vessel, the check valve being spaced laterally away from the discharge end of the fuel pump at an inlet to the pressure vessel.2. The fuel supply system of claim 1 , further comprising a channel configured to receive all of the flow discharged from the fuel pump claim 1 , the channel terminating at a manifold providing a two-way diversion of the flow of fuel between a first portion provided through the check valve and into the pressure vessel claim 1 , and a second portion provided to a jet pump.3. The fuel supply system of claim 2 , wherein the channel is positioned at an upper edge of the housing at an outer peripheral portion thereof claim 2 , and the channel has a rectangular cross- ...

APPARATUS, SYSTEM, AND METHOD FOR DIVERTING FLUID

A pump component is removed from a port of a suction-side fluid cavity of a high-pressure fluid pump. The pump component performs a pump function for the high-pressure fluid pump. A primary coupler connects to the port. The pump component connects to the primary coupler. A diverter fluid passage diverts a low-pressure fluid from the primary coupler to an auxiliary fluid delivery system. The primary coupler communicates the low-pressure fluid through the pump component and primary coupler to the port. 125-. (canceled)26. An internal combustion engine system , comprising:an internal combustion engine;a primary fuel supply system structured to supply a fuel flow to said internal combustion engine for generating mechanical power with said internal combustion engine;an emission control system coupled to an exhaust of said internal combustion engine; andan auxiliary fuel delivery system fluidly disposed between said primary fuel supply system and said emission control system, said auxiliary fuel delivery system structured to receive a continuous flow of a fuel from said primary fuel supply system and provide an intermittent flow of the fuel to said emission control system.27. The internal combustion engine system of claim 26 , wherein said primary fuel supply system is structured to supply the fuel flow to said internal combustion engine within flow rate and pressure ranges claim 26 , and wherein said auxiliary fuel delivery system is adapted to prevent the fuel flow to said internal combustion engine from dropping below said flow rate and pressure ranges.28. The internal combustion engine system of claim 26 , wherein said auxiliary fuel delivery system including an orifice sized to control a rate of flow received by said auxiliary fuel delivery system.29. The internal combustion engine system of claim 28 , wherein said auxiliary fuel delivery system including an accumulator in fluid communication with said orifice claim 28 , said accumulator structured to store the fuel ...

FEED FORWARD TECHNIQUE AND APPLICATION FOR INJECTION PRESSURE CONTROL

A control method is provided for using a feed forward technique. The method includes, but is not limited to using a setpoint value of a controlled variable to calculate a compensation of the closed loop static error, summing said contribution to the setpoint value, operating an estimation of the closed loop error to obtain a feed forward contribution. 1. A control method using a feed forward technique , comprising:using a setpoint value of a controlled variable to calculate a compensation of the closed loop static error;summing said contribution to the setpoint value; andoperating an estimation of the closed loop error to obtain a feed forward contribution.2. The control method according to claim 1 , further comprising:using a controlled variable error to calculate a load proportional contribution; andsubtracting said feed forward contribution to said controlled variable error and calculating a load integral contribution.3. The control method according to claim 2 , further comprising:summing said load proportional and said load integral contributions to an estimated load; andapplying the previous sum to the actual system plant.4. The method according to claim 1 ,wherein the injection pressure corresponds to the controlled variable,wherein the fuel quantity corresponds to the sum between the proportional load,wherein the integral load and the estimation of the system load the fuel quantities corresponds to the actual system load, and{'sub': in', 'out, 'wherein the transfer function G represents the integral of the quantity balance with Δp˜∫(Q−Q)·dt.'}5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. A control apparatus comprising:a calculator that is configured to calculate a compensation of a closed loop static error using a setpoint value of a controlled variable;a summer that is configured to sum said contribution to the setpoint value; anda device for operating an estimation of the closed loop error to obtain a feed forward ...

FUEL SYSTEM WITH VARIABLE OUTPUT FUEL PUMP

In at least some implementations, a system includes a pump having an electric motor and a pump outlet, a controller coupled to the pump to vary the power provided to the motor to vary the flow rate of liquid discharged from the pump outlet, a pressure regulator having an inlet communicated with the pump outlet, a regulator outlet from which liquid is discharged from the regulator, a bypass outlet through which liquid is discharged from the regulator, and a pressure responsive valve that opens to permit liquid flow through the bypass outlet, and a flow sensor. The flow sensor is communicated with the bypass outlet to sense or determine a flow rate of liquid at or downstream of the bypass outlet, the flow sensor also communicated with the controller to provide an indication of the bypassed liquid flow rate to the controller. 1. A liquid pumping system , comprising:a pump including an electric motor, and a pump outlet through which liquid is discharged under pressure;a controller coupled to the pump to vary the power provided to the motor to vary the flow rate of liquid discharged from the pump outlet;a pressure regulator having an inlet communicated with the pump outlet, a regulator outlet from which liquid is discharged from the regulator, a bypass outlet through which liquid is discharged from the regulator, and a pressure responsive valve that opens when the pressure of liquid acting on the valve is greater than a threshold pressure to permit liquid flow through the bypass outlet; anda flow sensor communicated with the bypass outlet to sense or determine a flow rate of liquid at or downstream of the bypass outlet, the flow sensor also communicated with the controller to provide an indication of the bypassed liquid flow rate to the controller.2. The system of which also includes a second controller that is communicated with the controller coupled to the pump claim 1 , the second controller providing an indication of the liquid demand in the system to the controller ...

APPARATUS, SYSTEM AND METHOD FOR THERMAL MANAGEMENT BY DEPLOYING ENGINE FUELING ON DEMAND

A method includes receiving information indicative of a temperature of exhaust gas emitted from an engine operating at an engine speed, determining that the temperature of the exhaust gas is below a predefined temperature threshold, determining an engine load sized to increase the temperature of the exhaust gas above the predefined temperature threshold, increasing a load on the engine to the determined engine load while maintaining the engine at the engine speed by increasing at least one of a fuel flow rate and a fuel flow pressure of the fuel pump powered by the engine, and diverting the excess fuel from the fuel flow path upstream of the engine. Increasing at least one of the fuel flow rate and the fuel pressure of the fuel pump causes excess fuel to be provided to the engine than is necessary to maintain the engine at the engine speed. 1. A method comprising:receiving information indicative of a temperature of exhaust gas emitted from an engine operating at least one of an engine speed below a predefined speed threshold or a low engine load;determining that the temperature of the exhaust gas is below a predefined temperature threshold;determining an engine load structured to increase the temperature of the exhaust gas above the predefined temperature threshold;increasing a load on the engine to the determined engine load while maintaining the engine at the engine speed by increasing at least one of a fuel flow rate and a fuel flow pressure of a fuel pump powered by the engine, wherein the increasing at least one of the fuel flow rate and the fuel flow pressure of the fuel pump causes excess fuel to be provided to the engine than is necessary to maintain the engine at the commanded engine speed; anddiverting, by a fuel metering device, the excess fuel from a fuel flow path of the fuel upstream of the engine.2. The method of claim 1 , wherein the fuel flow pressure is increased to a maximum pressure achievable at the engine speed.3. The method of claim 1 , ...

METHODS AND SYSTEM FOR INHIBITING AUTOMATIC ENGINE STOPPING

A method and system for operating a vehicle that includes a plurality of engine starting devices and an internal combustion engine is described. In one example, the method determines whether or not to inhibit automatic engine stopping so that a lifespan of an engine starting device may be extended. In one example, the inhibiting is based on a ratio of an actual total number of engine starts generated via the engine starting device to an actual total distance traveled by the vehicle since the engine starting device was installed. 1. A method for operating a vehicle , comprising:inhibiting an automatic engine pull-down via a controller based on a minimum engine running time for enabling automatic engine pull-down and based on a minimum vehicle travel distance for enabling automatic engine pull-down.2. The method of claim 1 , further comprising cranking an engine via one of a plurality of engine starting devices.3. The method of claim 1 , where inhibiting the automatic engine pull-down is further based on an amount of continuous engine run time since an engine most recently stopped being less than the minimum engine running time for enabling automatic engine pull-down.4. The method of claim 1 , where inhibiting the automatic engine pull-down is further based on an actual total distance traveled by a vehicle since an engine began continuously running after the engine most recently stopped being less than the minimum vehicle travel distance for enabling automatic engine pull-down.5. The method of claim 1 , further comprising requesting the automatic engine pull-down in response to vehicle operating conditions.6. The method of claim 5 , where the vehicle operating conditions include vehicle speed and brake pedal position.7. The method of claim 1 , where the automatic engine pull-down includes ceasing fuel delivery to an engine.8. A vehicle system claim 1 , comprising:an internal combustion engine;a plurality of engine starting devices; anda controller including executable ...

Fluid Injector Supply System and Method for Operating Same

A fluid injection system includes a fluid injector assembly; a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly; an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly, the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly; a pressure sensor fluidly coupled to the pressure measurement port; and a controller operatively coupled to the fluid conditioning module and the pressure sensor. The controller is configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor. 1. A fluid injection system , comprising:a fluid injector assembly;a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly via an injector assembly inlet conduit;an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly along a direction of fluid flow through the fluid injector assembly,the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly;a pressure sensor fluidly coupled to the pressure measurement port; anda controller operatively coupled to the fluid conditioning module and the pressure sensor, the controller being configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor.2. The fluid injection system of claim ...

FUEL PIPING FOR VEHICLE, AND CLAMP THEREFOR

Fuel piping for a vehicle, which is fixed by clamps and routed on a vehicle body, is formed to have a circular hollow section inside and anisotropy in a wall thickness thereof in the circumferential direction. In particular, the fuel piping for a vehicle has at least one thick-wall portion in the circumferential direction and is disposed on a vehicle body so that the thick-wall portion is positioned vertically at the top or bottom, or has one thick-wall portion in the circumferential direction and is disposed on the vehicle body so that the thick-wall portion is positioned vertically at the top. In addition, the clamp for fixing to the vehicle the fuel piping for a vehicle includes a holding portion for arranging the thick-wall portion vertically at an end, and holding the fuel piping for a vehicle so as not to be turned in the circumferential direction thereof. 1. Fuel piping for a vehicle , to be fixed by clamps and routed on a vehicle body , comprising:two or more resin layers, wherein an outermost resin layer has, in a cross-sectional view, anisotropy in a wall-thickness in a circumferential direction, while other resin layers have cross-sectional shapes of hollow cylinders; anda wall whose thickness continuously varies and which has at least one thick-wall portion in the circumferential direction,wherein the fuel piping is disposed on the vehicle body so that the thick-wall portion is positioned vertically at the top or bottom to suppress sagging of the fuel piping.2. (canceled)3. The fuel piping for a vehicle according to claim 1 , comprisingone thick-wall portion in the circumferential direction,wherein the fuel piping for a vehicle is disposed on the vehicle body so that the thick-wall portion is positioned vertically at the top.4. (canceled)5. A clamp for fuel piping for a vehicle claim 1 , used for fixing to the vehicle the fuel piping for a vehicle according to claim 1 , comprising:a holding portion that arranges the thick-wall portion of the fuel piping ...

METHOD FOR STARTING AN INTERNAL COMBUSTION ENGINE

A method for starting an internal combustion engine, having which has at least one cylinder, a controllable starter and a controllable fuel injection device, at least one cylinder, in particular every cylinder, of the internal combustion engine being assigned at least one decompression valve for reducing the compression which takes place during the operation of the internal combustion engine in the case of a compression stroke. A defined starting rotational speed is predetermined in the control unit, that, in the case of a controlled activation of the starter, the at least one decompression valve is opened in an automatically controlled manner by means of a control unit, and that the control unit detects the current rotational speed of the internal combustion engine and, when the defined starting rotational speed is reached, closes the at least one decompression valve and activates the fuel injection device. 1. A method for starting an internal combustion engine , which has at least one cylinder , a controllable starter and a controllable fuel injection device , at least one cylinder , in particular every cylinder , of the internal combustion engine being assigned at least one decompression valve for reducing the compression which takes place during the operation of the internal combustion engine in the case of a compression stroke , the method comprisingpredetermining in a control unit a defined starting rotational speed;automatically opening the at least one decompression valve in an controlled manner by means of the control unit, during a controlled activation of the starter; anddetecting the current rotational speed of the internal combustion engine and, when the defined starting rotational speed is reached, closing the at least one decompression valve and activating the fuel injection device. in that the control unit2. The method according to claim 1 , characterized in that the internal combustion engine is a multiple-cylinder diesel internal combustion engine. ...

ATOMIZING FUEL DELIVERY SYSTEM

An engine that includes an air intake, a combustion chamber, an air passageway that is configured to channel air from the air intake toward the combustion chamber, a carburetor, a throttle plate, and a fuel atomizer. The carburetor includes a fuel bowl with a fuel well, a carburetor passageway that is fluidly coupled to the air passageway and configured to channel air and fuel to the combustion chamber, and a carburetor nozzle that has an inlet configured to receive fuel from the fuel well and an outlet disposed proximate to a constricted section of the carburetor passageway. The throttle plate is disposed downstream of the carburetor nozzle, and the fuel atomizer is configured to provide fuel to the carburetor passageway. 1. An engine comprising:an air intake;a combustion chamber;an air passageway configured to channel air from the air intake toward the combustion chamber; a fuel bowl including a fuel well,', 'a carburetor passageway fluidly coupled to the air passageway and configured to channel air and fuel to the combustion chamber, and', 'a carburetor nozzle including an inlet configured to receive fuel from the fuel well and an outlet disposed proximate to a constricted section of the carburetor passageway;, 'a carburetor including'}a throttle plate disposed downstream of the carburetor nozzle; anda fuel atomizer configured to provide fuel to the carburetor passageway.2. The engine of claim 1 , wherein the fuel atomizer includes a piezoelectric actuator.3. The engine of claim 1 , wherein the fuel atomizer provides fuel to the carburetor passageway in response to a load signal.4. The engine of claim 3 , wherein the load signal is a function of at least one of a throttle position claim 3 , a power boost signal claim 3 , a load detector output signal claim 3 , and an environmental condition.5. The engine of claim 1 , wherein the fuel atomizer includes an atomizer nozzle disposed upstream of the constricted section.6. The engine of claim 5 , wherein the atomizer ...

METHOD AND SYSTEM FOR BALANCING CYLINDER AIR-FUEL RATIO

Methods and systems are provided for detecting cylinder-to-cylinder air-fuel ratio (AFR) imbalance in engine cylinders. In one example, a method may include detecting an AFR imbalance of an engine cylinder based on an individual crankshaft acceleration of the cylinder relative to a mean crankshaft acceleration produced by all cylinders of the engine, and correcting a fuel amount of the cylinder via a fuel multiplier value, the fuel multiplier value selected from a plurality of fuel multiplier values based on an imbalance source. In this way, the AFR imbalance may be accurately detected and correcting using existing engine system sensors. 1. A method , comprising:indicating an air-fuel ratio (AFR) imbalance of a cylinder of a multi-cylinder engine based on a first crankshaft acceleration produced by the cylinder relative to a first mean crankshaft acceleration produced by all cylinders of the engine; andin response to the AFR imbalance, adjusting a fuel amount of the cylinder via a fuel multiplier, the fuel multiplier selected from a plurality of fuel multipliers based on an imbalance source.2. The method of claim 1 , wherein the imbalance source includes one or more imbalance sources selected from a plurality of imbalance sources claim 1 , and the method further comprises:isolating each imbalance source of the plurality of imbalance sources and independently learning the plurality of fuel multipliers for each of the plurality of imbalance sources.3. The method of claim 2 , wherein the plurality of imbalance sources includes nominal imbalance claim 2 , purge imbalance claim 2 , and exhaust gas recirculation (EGR) imbalance claim 2 , and wherein the method further comprises:responsive to operating with more than one imbalance source, combining fuel multipliers from each of the more than one imbalance source.4. The method of claim 1 , wherein indicating the AFR imbalance of the cylinder based on the first crankshaft acceleration produced by the cylinder relative to the ...

FUEL SUPPLY DEVICE

A conduit engaging mechanism has a first member and a second member. The first member and the second member define and form fuel passages extending over them. A seal member is disposed between the first member and the second member. The first member and the second member are firmly engaged in a radial direction by fittingly coupling an engaging section and a fitting section. The first member and the second member are engaged by an engaging mechanism in an axial direction. The fuel passages are communicated as a series of passages by engaging the first passage forming section and the second passage forming section. The first passage forming section has a flexible pipe. The flexible pipe suppresses extension and contraction of the seal member by deflection itself. Consequently, deterioration of the seal member is suppressed. 1. A fuel supply device comprising:{'b': 44', '52', '62', '41', '42', '71', '271, 'a passage forming section () which defines and forms a fuel passage (, ) extending over a first member () and a second member () which are engaged by an engaging mechanism (, );'}{'b': '45', 'a component engaging section () which engages the first member and the second member so that the first member and the second member are relatively positioned within a regular positional range;'}{'b': '43', 'a seal member () which seals between the first member and the second member, and which extends and contracts according to positional shifting of the first member and the second member within the regular positional range; and'}{'b': 53', '453', '553, 'a flexible pipe (, , ) which defines and forms a part of the fuel passage, and which is possible to be deformed according to positional shifting of the first member and the second member within the regular positional range by being arranged between the passage forming section and the component engaging section.'}2. The fuel supply device claimed in claim 1 , whereinthe passage forming section includes:{'b': 54', '55, 'an ...

FUEL PUMP MODULE

A noise from a fuel pump module is reduced by housing a port injection (PI) fuel pump in a pump case of a fuel tank, in a structure in which the PI fuel pump is held with a bracket that is provided at a position between the PI fuel pump and a PI suction filter. The PI fuel pump and the bracket that engages with the pump case are interposed by an elastic member that abuts a base part of the bracket. In operation, when the PI fuel pump transmits its vibration to the pump case through the elastic member and the bracket, the elastic member dampens and reduces the vibration transmitted to the bracket, thereby reducing the noise by a reduction of transmitted vibration through the pump case to a subtank and the fuel tank. 1. A fuel pump module supplying fuel from a fuel tank to an internal-combustion engine , the fuel pump module comprising:a first suction filter removing foreign substance from fuel in the fuel tank;a first pump discharging fuel that has passed through the first suction filter into a combustion chamber of the internal-combustion engine;a first filter removing foreign substance from fuel that is discharged from the first pump;a first supply port disposed at a position between the first filter and the combustion chamber and allowing fuel that has passed through the first filter to flow therethrough;a second suction filter removing foreign substance from fuel in the fuel tank separately from the first suction filter;a second pump discharging fuel that has passed through the second suction filter into an air-intake system of the internal-combustion engine;a second filter removing foreign substance from fuel that is discharged from the second pump;a second supply port disposed at a position between the second filter and the air-intake system and allowing fuel that has passed through the second filter to flow therethrough;a housing member housing one of the first pump and the second pump;a support part formed on the housing member and supporting an other of the ...

DIRECT INJECTION EVENT-BASED ENGINE STARTING

A method for starting an internal combustion engine having direct fuel injection, comprising of adjusting a number of direct injections per combustion cycle based on a cylinder event number from a first cylinder event. 1. A method for starting an internal combustion engine having direct fuel injection , comprising:deactivating one or more engine cylinders during an idle condition; andwhen an increase in engine output is requested,restarting the one or more deactivated engine cylinders;variably adjusting engine cam timing;injecting fuel as an intake stroke injection and a compression stroke injection during a combustion cycle for a first combustion event of an engine start from the deactivation;reducing a pulse width of one or more of the intake stroke injection and the compression stroke injection after the first combustion event of the engine start;continuing intake stroke injection and compression stroke injection for a plurality of subsequent combustion events during engine cranking operation; andcontinuing intake stroke injection and compression stroke injection through a catalyst warm-up operation including retarded ignition timing during idle speed control to increase exhaust gas heat at an elevated engine idle speed,wherein a timing of the injections is varied based on an operating condition.2. The method of claim 1 , wherein deactivating one or more cylinders includes discontinuing fueling and/or spark within the one or more cylinders.3. The method of claim 1 , wherein restarting the one or more deactivated cylinders of the engine includes restarting with assistance from a starter motor.4. The method of claim 3 , wherein restarting the one or more deactivated cylinders includes reinitiating fueling and/or spark to the cylinders.5. The method of claim 4 , wherein reinitiating spark to the cylinders includes providing an ignition spark to each cylinder to initiate cylinder combustion.6. The method of claim 1 , further comprising claim 1 , directing exhaust gas ...

Vehicle

A vehicle 100 comprises a fuel tank for storing fuel, a fueling port for supplying the fuel tank with fuel, a CO 2 recovery device configured to recover CO 2 , a CO 2 collection port for collecting CO 2 from the CO 2 recovery device, and a single openable lid configured to cover both the fueling port and the CO 2 collection port.

METHOD FOR A HYBRID VEHICLE

Methods and systems are provided for a fuel system in a hybrid vehicle. In one example, a method includes activating a fuel pump in a fuel tank included in the hybrid vehicle responsive to a refueling event with a level of residual fuel higher than a fill threshold. By activating the fuel pump, residual fuel in the fuel tank is mixed with newly received fuel in the refueling event enabling improved combustion in a subsequent engine-on condition. 1. A method for a hybrid vehicle , comprising: 'activating a fuel pump located within the fuel tank without injecting any fuel to an engine coupled in the hybrid vehicle.', 'responsive to a refueling event with an amount of residual fuel in a fuel tank higher than a threshold fill,'}2. The method of claim 1 , wherein the fuel pump is an electrically actuated pump.3. The method of claim 1 , wherein the fuel pump is activated concurrent to the refueling event.4. The method of claim 1 , wherein the fuel pump is activated following the refueling event.5. The method of claim 4 , further comprising maintaining operation of the fuel pump for a threshold duration responsive to vehicle operation in an engine-off mode following the refueling event.6. The method of claim 1 , further comprising operating the fuel pump based on engine conditions responsive to vehicle operation in an engine-on mode subsequent to the refueling event.7. The method of claim 1 , wherein the refueling event is confirmed via one or more of unlocking of a refueling lock claim 1 , insertion of a fuel nozzle in a fuel filler pipe claim 1 , and an increase in an amount of fuel fill in the fuel tank.8. The method of claim 1 , further comprising blending the residual fuel with newly received fuel.9. The method of claim 1 , further comprising delaying a leak test of the fuel tank until a pressure in the fuel tank is stabilized after the refueling event.10. A method for a hybrid vehicle claim 1 , comprising:during a first condition, activating a fuel pump and ...

SYSTEM FOR SUPPLYING FUEL TO AN ENGINE

A fuel-supply system has a fuel pump, a pressure controller, a signal output device and a power switch. The pressure controller adjusts the observed fuel pressure of the fuel and may electronically communicate with a motor driving the fuel pump to regulate the supply of fuel from a fuel tank of the fuel-supply system to an engine. In detail, the pressure controller performs feedback control of a voltage applied to the motor such that the pressure of a fuel pumped from the fuel pump approaches to have a first target and/or ideal fuel pressure value. Further, the signal output device outputs the first target fuel pressure value to the pressure controller. Activation of the power switch supplies power, from a power source, to the pressure controller, the motor and the signal output device. Further, the pressure controller may perform feedback control based on a second target fuel pressure value. 1. A fuel-supply system , comprising:a fuel pump powered by a motor wherein the fuel pump supplies fuel from a fuel tank to an engine;a pressure controller that performs feedback control of a voltage of an electric power applied to the motor to adjust an observed fuel pressure of the fuel to approach a first target fuel pressure value;a signal output device that outputs the first target fuel pressure value to the pressure controller; anda power switch coupled to a power source that is configured to supply the electric power wherein activation of the power switch allows the electric power to be supplied to the pressure controller, the motor and the signal output device; andfurther wherein the pressure controller is configured to perform feedback control of the voltage applied to the motor based on a second target fuel pressure value to adjust the observed fuel pressure of the fuel until the first target fuel pressure value is outputted from the signal output device to the pressure controller after the power switch is activated.2. The fuel-supply system of wherein the pressure ...

Method of controlling a fuel supply system of an engine of a motor vehicle

A method of controlling a fuel supply system of an engine 10 of a motor vehicle 50 is disclosed in which an engine driven variable output high pressure fuel pump is operated at a high demand level to charge a high pressure fuel accumulator with fuel during a shutdown of the engine and, during a subsequent start-up of the engine, use fuel from the accumulator while operating the high pressure fuel pump at a low demand level. This reduces the fuel consumption of the engine by using kinetic energy from the slowing engine to drive the high pressure fuel pump and increases the deceleration of the engine.

FUEL PUMP CONTROL SYSTEM

A lower limit setting portion of a fuel pump control system sets a lower limit value depending on an engine operating mode. For example, it sets a duty ratio of 0% as the lower limit value, when the engine operating mode is in a STOP mode in a turned-on condition of an ignition switch. A duty-ratio calculating portion carries out a feedback control in order that an actual fuel pressure comes closer to a target fuel pressure by use of the lower limit value and calculates a duty ratio for driving a fuel pump by the feedback control. An abnormal condition determining portion determines an abnormal condition based on the duty ratio and pump current. The abnormal condition determining portion further determines based on a remaining fuel amount whether the abnormal condition is caused by a disconnection or whether the abnormal condition is caused by an idling operation of the fuel pump due to fuel shortage. 1. A fuel pump control system for an internal combustion engine mounted in an automotive vehicle comprising:a relay device for supplying electric power from a vehicle battery to a fuel pump when the relay device is turned on, so that the fuel pump supplies fuel from a fuel tank to the internal combustion engine;a switching device provided in a power supply path for supplying the electric power to the fuel pump and connected in series with the fuel pump, the switching device being turned on or turned off depending on a pump driving signal;an information obtaining portion for obtaining an information relating to an actual fuel pressure of the fuel pumped out from the fuel pump, an information relating to a target fuel pressure for controlling the fuel pump, an information relating to an engine operating condition of the internal combustion engine and an information relating to a remaining amount of the fuel in the fuel tank;a calculation portion for calculating a first duty ratio of the pump driving signal based on the actual fuel pressure, the target fuel pressure and ...

FUEL RECIRCULATION

A method of dissolving water into diesel fuel in a diesel engine includes pumping fuel through a flow path with a pump, directing a first portion of the fuel into a high pressure rail, injecting the first portion of the fuel into one or more cylinder heads for combustion, directing a second portion of the fuel into a first conduit, and actuating a flow diverter such that, the second portion of the fuel is directed toward a fuel reservoir when the flow diverter is in a first position, and the second portion of the fuel is directed toward the first pump bypassing the fuel reservoir when the flow diverter is in a second position. 1. A diesel engine fuel system comprising:a fuel reservoir;a pump configured to move fuel from the fuel reservoir;a first conduit fluidly coupled to the fuel reservoir at a first end and to the pump at a second end;a high pressure rail assembly positioned to receive fuel from the second pump, the high pressure rail assembly configured to supply fuel into one or more cylinder heads for combustion;a second conduit positioned to receive fuel from the high pressure rail assembly and fluidly coupled to the fuel reservoir to direct fuel received from the high pressure rail assembly into the fuel reservoir;a flow diverter fluidly coupled to the second conduit; anda third conduit fluidly coupled to the flow diverter at a first end and to the first conduit at a second end;wherein the flow diverter is configured to selectively fluidly couple the second conduit to the fuel reservoir to permit fuel to flow into the fuel reservoir when the flow diverter is in a first position and fluidly couple the second conduit and the first conduit to permit fuel to bypass the fuel reservoir when the flow diverter is in a second position.2. The diesel engine fuel system of claim 1 , wherein the flow diverter is a solenoid valve.3. The diesel engine fuel system of claim 2 , further comprising a temperature sensor and a controller claim 2 , the temperature sensor in ...

INTERNAL COMBUSTION ENGINE HAVING A FUEL SUPPLY SYSTEM FOR STOP-AND-GO OPERATION

Embodiments for an internal combustion engine are provided. In one example, and internal combustion engine comprises at least two cylinders each including an injection nozzle and a fuel supply system for supplying the cylinders with fuel. The fuel supply system includes a supply line connecting each injection nozzle to a first fuel reservoir storing fuel at a first pressure, the first fuel reservoir filled by a pump provided upstream, a second fuel reservoir storing fuel at a second pressure less than the first pressure and connected to the first fuel reservoir via a connecting line for filling with fuel, and a bypass line connecting the second fuel reservoir to each injection nozzle. The bypass line opens into the fuel supply system downstream of the first fuel reservoir, thereby forming a connection point, and a shutoff element is arranged in the bypass line, opening or shutting off the bypass line. 1. An internal combustion engine , comprising:at least two cylinders each including an injection nozzle; a supply line connecting each injection nozzle to a first fuel reservoir storing fuel at a first pressure, the first fuel reservoir filled by a pump provided upstream,', 'a second fuel reservoir storing fuel at a second pressure less than the first pressure and connected to the first fuel reservoir via a connecting line for filling with fuel; and', 'a bypass line connecting the second fuel reservoir to each injection nozzle, wherein the bypass line opens into the fuel supply system downstream of the first fuel reservoir, thereby forming a connection point, and wherein a shutoff element is arranged in the bypass line, opening or shutting off the bypass line., 'a fuel supply system for supplying the cylinders with fuel, the fuel supply system including2. The internal combustion engine as claimed in claim 1 , wherein at least one valve is arranged in the connecting line between the first fuel reservoir and the second fuel reservoir claim 1 , said at least one valve ...

Feedback Control Method For A Fuel Delivery System

A feedback control method for a fuel delivery system of an internal combustion engine, having a fuel delivery pump for supplying fuel, the fuel delivery pump having a pump mechanism driven by an electric motor, which is controlled by a generated control signal. The current fuel volume delivered by the fuel delivery pump and the prevailing fuel requirement of the internal combustion engine are included in the control signal. The prevailing fuel requirement is determined using characteristic variables that characterize the operating state of the internal combustion engine. 110.-. (canceled)11. A feedback control method for a fuel delivery system of an internal combustion engine in a motor vehicle , having a fuel delivery pump that supplies the internal combustion engine with fuel , the fuel delivery pump has a pump mechanism driven by an electric motor , the electric motor controlled by a control signal , comprising:generating the control signal for the electric motor, wherein a current fuel volume delivered by the fuel delivery pump and a prevailing fuel requirement of the internal combustion engine are included in the control signal;determining the prevailing fuel requirement based at least in part on characteristic variables that characterize an operating state of at least one of the internal combustion engine and the motor vehicle.12. The method as claimed in claim 11 , further comprising:determining the current fuel volume delivered by the fuel delivery pump from a current pressure prevailing in the fuel delivery system and a current rotational speed of the pump mechanism of the fuel delivery pump based at least in part on at least one characteristic map.13. The method as claimed in claim 12 , further comprising:determining the prevailing fuel requirement of the internal combustion engine based at least in part on at least one of:a gas pedal position,a charging pressure of a turbocharger,a rotational speed of the internal combustion engine,a delivered air mass,a ...

FUEL LEVEL ESTIMATION DEVICE AND ABNORMALITY DIAGNOSTIC APPARATUS FOR CLOSED FUEL VAPOR SYSTEM

Disclosed is a fuel level estimation device including: an information acquiring unit acquiring information about a closed system internal pressure of a closed fuel vapor system including the fuel tank, a vent passage, and a canister; a flow rate controlling unit controlling, by actuating a negative pressure pump, a flow rate of fuel vapor-containing gas in the closed fuel vapor system; a fuel level estimating unit estimating a fuel level based on a total volume of the closed fuel vapor system and an occupied volume of the gas. The fuel level estimating unit estimates the occupied volume of the gas by using a change in a closed system internal pressure before and after the closed fuel vapor system is subjected to pressure-reducing treatment for a predetermined interval and a reference discharging rate when the gas is subject to the pressure-reducing treatment. An abnormality diagnostic apparatus is also disclosed. 1. A fuel level estimation device comprising:an information acquiring unit configured to acquire information about a closed system internal pressure of a closed fuel vapor system including a fuel tank that stores fuel, a vent passage through which the fuel tank is in communication with air, and a canister used to adsorb fuel vapor generated in the fuel tank;a flow rate controlling unit configured to control, by actuating a negative pressure source, a flow rate of fuel vapor-containing gas present in the closed fuel vapor system; anda fuel level estimating unit configured to estimate a fuel level based on a total volume of the closed fuel vapor system and an occupied volume of the gas,wherein the fuel level estimating unit estimates the occupied volume of the gas on the basis of a change in the closed system internal pressure before and after the closed fuel vapor system is subjected to pressure-reducing treatment for a predetermined unit time by means of the flow rate controlling unit and a reference discharging rate when the gas is subject to the pressure- ...

Automatic Fuel Shutoff

A combination lever for a carburetor is an integrated shutoff lever and fuel valve. The combination lever includes a longitudinal portion for a handle and a cylindrical portion including a fuel path for the fuel valve. A carburetor casing is shaped to form a valve chamber and a carburetor chamber. The valve chamber supports the cylindrical portion. A directional cavity formed in the cylindrical portion of the combination lever regulates a flow of fuel to the carburetor chamber according to a rotation of the combination lever. At one position the directional cavity opens the fuel path so that fuel flows into the carburetor chamber. At another position the directional cavity closes the fuel path so that the flow of fuel is blocked. The combination lever may also include an abutment portion to engage a switch for completing an electrical shutoff path to an engine coupled to the carburetor. 1. An apparatus comprising:a combination lever including a longitudinal handle and a cylindrical portion, wherein the cylindrical portion is supported by a fuel valve chamber of a carburetor; anda cavity formed in the cylindrical portion of the combination lever and configured to regulate a flow of fuel according to a rotation of the combination lever;wherein the cavity of the cylindrical portion of the combination lever is configured to receive the flow of fuel from a fuel intake and deliver the flow of fuel, through the cavity, to the carburetor through an output path, wherein the fuel intake and the output path are in a direction substantially perpendicular to the rotation of the combination lever.2. The apparatus of claim 1 , further comprising:an abutment portion of the combination lever configured to engage a switch for completing an electrical shutoff path to an engine coupled to the carburetor.3. The apparatus of claim 2 , wherein the abutment portion of the combination lever is configured to linearly engage the switch in response to the rotation of the combination lever.4. ...

Altitude Fuel Limiter for Engine and Method of Using the Same

An altitude fuel limiter and method for controlling an engine using the same is provided. The altitude fuel limiter includes a torque screw sleeve extending from an inboard end to an outboard end. The torque screw sleeve has an interior surface defining a central bore extending axially within the torque screw sleeve. A plunger is disposed within the central bore and moves axially between a first position and a second position. A plunger regulator senses ambient pressure and is coupled with the plunger to axially displace the plunger toward the inboard end of the torque screw sleeve to the first position in response to sensing an ambient pressure that is below a predetermined pressure. The predetermined pressure may be associated with non-compliant altitudes and the plunger limits fuel delivered to the engine when displaced to the first position. 1. An altitude fuel limiter for an engine , comprising:a torque screw sleeve extending from an inboard end to an outboard end and including an interior surface defining a central bore extending axially within said torque screw sleeve;a plunger disposed within said central bore of said torque screw sleeve, said plunger being movable along an axial direction between a first position and a second position; anda plunger regulator coupled with said plunger, sensing ambient pressure, and axially displacing said plunger toward said inboard end of said torque screw sleeve to said first position to limit fuel delivered to the engine in response to said plunger regulator sensing an ambient pressure that is below a predetermined pressure.2. The altitude fuel limiter as set forth in wherein said first position of said plunger is defined by said plunger at least partially extending from said inboard end of said torque screw sleeve to engage a governor lever arm of the engine for limiting a maximum fuel flow delivered to the engine by restricting rotational travel of said governor lever arm.3. The altitude fuel limiter as set forth in ...

FILTER PRE-FILL DETECTION SYSTEM AND METHOD

A fuel filter pre-fill detection system includes a monitoring mechanism structured to monitor a fluid property of a fuel system indicative of priming of the fuel system. A control mechanism is coupled with and structured to received data from the monitoring mechanism, and outputs a signal responsive a time to prime the fuel system that is indicative of a filter pre-fill state. 1. A fuel system comprising:a fuel supply;a fuel conduit for delivering fuel from the fuel supply to an engine;a pump coupled between the fuel supply and the fuel conduit and operable to pump fuel between the fuel supply and the fuel conduit to prime the fuel system;a fuel filter positioned fluidly between the pump and the fuel conduit; anda filter pre-filling detection system including at least one monitoring mechanism structured to monitor a property of the fuel system indicative of a start of priming the fuel system and a property of the fuel system indicative of an end of priming the fuel system;the filter pre-filling detection system further including a control mechanism coupled with the at least one monitoring mechanism, the control mechanism being structured to determine a time from the start of priming the fuel system to the end of priming the fuel system that is indicative of pre-filling of the fuel filter, and to produce an error signal responsive to the determined time.2. The fuel system of wherein the fuel conduit includes a fuel line fluidly coupled to a plurality of fuel injectors.3. The fuel system of wherein the pump includes a low pressure pump positioned fluidly between the fuel supply and the fuel line claim 2 , and further comprising a high pressure pump positioned fluidly between the low pressure pump and the fuel line claim 2 , and wherein the fuel filter is positioned fluidly between the low pressure pump and the high pressure pump.4. The fuel system of wherein the control mechanism is further structured to compare the determined time with an expected time from the start ...

METHOD AND SYSTEM FOR FUEL SYSTEM CONTROL

Methods and systems are provided for enforcing a minimum fuel lift pump commanded voltage that is determined as a function of commanded lift pump pressure and fuel flow rate. The minimum fuel lift pump voltage is applied when the commanded voltage is lower than the minimum voltage. The approach reduces engine stalls induced by ingestion of fuel vapors at an injection pump coupled downstream of the lift pump. 1. A method , comprising:adjusting fuel lift pump operation in response to a lift pump pressure sensor downstream of the lift pump and upstream of a high pressure pump; andoperating the lift pump with a minimum lift pump voltage when a commanded lift pump voltage is below the minimum lift pump voltage.2. The method of claim 1 , wherein the adjusting includes decreasing a lift pump voltage as an output of the pressure sensor increases and increasing a lift pump voltage as the output of the pressure sensor decreases.3. The method of claim 1 , wherein the minimum lift pump voltage is based on each of commanded lift pump pressure and fuel flow rate.4. The method of claim 1 , wherein the minimum lift pump voltage maintains lift pump pressure above fuel vapor pressure.5. The method of claim 1 , further comprising claim 1 , operating the fuel lift pump with the commanded lift pump voltage when the commanded lift pump voltage is above the minimum lift pump voltage.6. The method of claim 1 , wherein the lift pump delivers fuel from a fuel tank to the high pressure pump claim 1 , the high pressure pump delivering fuel to fuel injectors.7. The method of claim 1 , further comprising claim 1 , operating the fuel lift pump with a maximum lift pump voltage when the commanded lift pump voltage remains above the maximum lift pump voltage for more than a threshold duration.8. The method of claim 7 , further comprising claim 7 , operating the fuel lift pump with the commanded lift pump voltage when the commanded lift pump voltage remains above the maximum lift pump voltage for ...

DEVICE FOR METERING FUEL

A device is described for metering fuel in internal combustion engines is provided, which includes a fuel distributor provided with a flow channel and at least one discharge orifice connected thereto, a valve which is connected to the fuel distributor for metering the fuel and has a pipe connection that is able to be attached to the discharge orifice, and connection means, which connects the fuel distributor and the valve to each other in the attachment region of the pipe connection and the discharge orifice in a pressure-tight manner. 19-. (canceled)10. A device for metering a fuel in an internal combustion engine , comprising:a fuel distributor having a flow channel and at least one upstream discharge orifice connected to the flow channel;at least one valve for metering the fuel, the valve being connected to the fuel distributor and including a pipe connection for attachment to the discharge orifice; and a seat surface enclosing the discharge orifice,', 'a connection head formed on the pipe connection and including a head area that comes to rest on the seat surface,', 'an undercut,', 'a flange element that engages with the undercut and has at least one threaded hole for a clamping bolt fixed in place on the fuel distributor, and', 'a receiving element fixed in place at the valve, in which the flange element lies in a keyed connection, the threaded hole being positioned correctly with respect to the clamping bolt., 'the connection arrangement connects the fuel distributor and the valve to each other in an attachment region of the pipe connection and the discharge orifice in a pressure-tight manner, and the connection arrangement includes, 'a connection arrangement, wherein11. The device as recited in claim 10 , wherein the flange element is snapped into place in the receiving element.12. The device as recited in claim 11 , wherein:the flange element is a flat part, and at least one bearing surface for the flange element,', 'a plurality of detent hooks that overlap ...

INTAKE DEVICE FOR MULTIPLE-CYLINDER ENGINE AND FUEL DELIVERY PIPE FOR INTAKE DEVICE

The present invention provides an intake device and a fuel delivery pipe for a multiple-cylinder engine including a transpiration gas passage or an intake air pressure collecting passage capable of reducing the number of components and improving assembly operability. The intake device and the fuel delivery pipe for a multiple-cylinder engine include: a throttle body including a plurality of bores, each of which communicates with an inside of each cylinder of the engine, and provided with throttle valves for adjusting intake volumes inside the bores in an openable and closable manner; injectors provided in the throttle body and injecting a fuel to the bores; a delivery pipe for supplying the fuel to the injectors; and an intake pipe communication passage connected to an inside of the bores and communicating with the inside of the bores, and the intake pipe communication passage is formed integrally with the delivery pipe. 1. An intake device for a multiple-cylinder engine comprising:a throttle body including a plurality of bores, each of which communicates with an inside of each cylinder of the engine, and provided with throttle valves for adjusting intake volumes inside the bores in an openable and closable manner;injectors provided in the throttle body and injecting a fuel to each bore;a delivery pipe for supplying the fuel to the injectors; andan intake pipe communication passage connected to the inside of each bore and communicating with the inside of each bore,wherein the intake pipe communication passage is formed integrally with the delivery pipe.2. The intake device for a multiple-cylinder engine according to claim 1 ,wherein the delivery pipe is provided with a fuel inlet port connected to a fuel tank side and fuel outlet ports connected to the injectors in the throttle body, a fuel passage branched from the fuel inlet port and extending to each fuel outlet port being formed inside the delivery pipe, andthe intake pipe communication passage is formed therein ...

Pneumatic emergency shut-off valve

A drive device for generating a drive movement includes a consumer, a fuel tank, which is connected to the consumer through a fuel line, and a pneumatically operable emergency shut-off valve in the fuel line. The emergency shut-off valve shuts off the fuel line in a closed position and allows fuel to pass through in an open position. The device provides a greater level of safety, in that the emergency shut-off valve remains in its closed position, or even automatically shifts to the closed position, in the event of defective operation. 110-. (canceled)11. An apparatus for protecting systems witha consumer, a fuel tank, and a fuel line connecting the consumer to the fuel tank;the apparatus comprising:a pneumatically-actuated emergency shut-off valve disposed in the fuel line, said shut-off valve having a closed position in which the fuel line is closed and an open position in which fuel is allowed to pass through the fuel line, said emergency shut-off valve, in the absence of actuation, remaining in the closed position or automatically moving into the closed position.12. The apparatus according to claim 11 , wherein said emergency shut-off valve is connected via a compressed air line to a compressed air container.13. The apparatus according to claim 11 , wherein said emergency shut-off valve is an electrically and/or electromagnetically actuated valve and includes a shut-off valve circuit connected to an energy storage device.14. The apparatus according to claim 13 , which comprises a compressed air switch disposed in said shut-off valve circuit and connected via a compressed air line to a compressed air container claim 13 , said compressed air switch interrupting said shut-off valve circuit upon pneumatic actuation.15. The apparatus according to claim 14 , wherein said emergency shut-off valve and said compressed air switch are connected via a common compressed air line section to the compressed air container claim 14 , and comprising a pilot control valve disposed ...

FUEL PRESSURE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

A pneumatic fuel pressure regulator and a mechanical fuel pressure regulator are disclosed wherein the pneumatic fuel pressure regulator uses a mechanical adjustment screw to position a spring locator and spring force exerted on a diaphragm assembly controlling flow through a base fuel block. The mechanical fuel pressure regulator includes a stepper motor and a threaded drive shaft to control pressure exerted on a diaphragm assembly to regulate passage through a base fuel block. A dual stage system combines the pneumatic and mechanical regulators in a dual base unit having two ports separately controlled by the separate regulators. 1. A fuel pressure control system for an internal combustion engine , comprising:a fuel regulator block for a fuel injector, the fuel regulator block having an internal valve port and a diaphragm for regulating fuel pressure within the fuel regulator block;means for mechanically adjusting a position of the diaphragm in the fuel regulator block; anda microcontroller operatively connected to the diaphragm position adjusting means and programmed to selectively open or close the internal valve port.2. The fuel pressure control system of claim 1 , wherein the microcontroller has multiple sensors to sense engine conditions claim 1 , including fuel pressure claim 1 , vacuum pressure claim 1 , and/or oxygen content.3. The fuel pressure control system of claim 1 , wherein the fuel regulator block comprises a base unit having an inlet port and an outlet port with the internal valve port there-between.43. The fuel pressure control system of any of - claims 1 , wherein the fuel regulator block comprises a resilient diaphragm spring exerting a biasing force against the diaphragm.5. The fuel pressure control system of claim 4 , wherein the fuel regulator block comprises an adjustment screw for engaging the resilient diaphragm spring and adjusting the biasing force against the diaphragm.6. The fuel pressure control system of claim 5 , wherein the ...

VEHICLE

A vehicle includes a drive motor arranged in an engine compartment, a fuel-operated vehicle heater arranged in the engine compartment, a fuel tank, a fuel line () leading from the fuel tank to the vehicle heater, as well as a cooling air line arrangement (). The cooling air line arrangement () envelops the fuel line () in at least some areas for providing a cooling air flow duct () for cooling air flowing around the fuel line (). 1. A vehicle comprising:a drive motor arranged in an engine compartment;a fuel-operated vehicle heater arranged in the engine compartment;a fuel tank;a fuel line leading from the fuel tank to the vehicle heater; anda cooling air line arrangement enveloping the fuel line in at least some areas of the fuel line, the cooling air line arrangement comprising a cooling air flow duct guiding cooling air to flow around the fuel line.2. A vehicle in accordance with claim 1 , wherein the cooling air line arrangement envelops the fuel line at least in one area of a length section extending in an area of the engine compartment.3. A vehicle in accordance with claim 1 , wherein:the cooling air line arrangement further comprises an inlet opening area of the cooling air line arrangement and an outlet of the cooling air line arrangement; andthe inlet of the cooling air line arrangement is positioned in a vehicle longitudinal direction in front of an outlet opening area of the cooling air line arrangement.4. A vehicle in accordance with claim 1 , wherein:the cooling air line arrangement further comprises an inlet opening area opening area and an outlet opening area; andthe inlet opening is area arranged in an area of higher air pressure at the vehicle and the outlet opening area is arranged in an area of lower air pressure at the vehicle.5. A vehicle in accordance with claim 4 , wherein the inlet opening area of the cooling air line arrangement is arranged close to a vehicle front end area or opens in a direction towards the vehicle front end area.6. A ...

ASSEMBLY STRUCTURE FOR PUMP MODULE

A pump module is disposed on a bottom portion of a fuel tank in the fuel tank. The pump module includes a suck-up unit for sucking up a fuel and a plurality of engaged portions. A bracket includes a base portion, a plurality of engaging portions, and a flow path. The base portion is a frame member fixed to the bottom portion and surrounding the pump module in a state where a lower end portion is in contact with the bottom portion. The engaging portions protrude from the base portion toward an upper side of the fuel tank and are respectively engaged with the engaged portions of the pump module. The flow path is disposed in the base portion and allows an inside of a frame of the base portion and an outside of the frame of the base portion to communicate with each other. 1. An assembly structure for a pump module , the assembly structure comprising:a pump module disposed on a bottom portion of a fuel tank in the fuel tank, the pump module including a suck-up unit and a plurality of engaged portions, the suck-up unit being disposed in a lower end portion of the pump module positioned on a lower side of the fuel tank to suck up a fuel, and the plurality of engaged portions being disposed in an outer peripheral portion of the pump module; and{'b': '46', 'a bracket including a base portion, a plurality of engaging portions, and a flow path (), whereinthe base portion is a frame member fixed to the bottom portion and surrounding the pump module in a state where the lower end portion is in contact with the bottom portion;the engaging portions protrude from the base portion toward an upper side of the fuel tank and are respectively engaged with the engaged portions of the pump module; andthe flow path is disposed in the base portion and allows an inside of a frame of the base portion and an outside of the frame of the base portion to communicate with each other.2. The assembly structure according to claim 1 , wherein the flow path has a groove portion that is disposed in a ...

FEEDBACK CONTROLLED SYSTEM FOR IGNITION PROMOTER DROPLET GENERATION

An engine system is disclosed. The engine system may have an engine including at least one cylinder. The engine system may also have a first source configured to supply fuel for combustion in the engine. The engine system may have a second source configured to supply ignition promoter material for combustion in the engine. The engine system may also have a droplet generator configured to generate droplets of the ignition promoter material. In addition the engine system may have a controller. The controller may be configured to determine an engine parameter. The controller may also be configured to determine a number of the droplets based on the engine parameter. Further, the controller may be configured to determine droplet sizes of the droplets based on the engine parameter. In addition, the controller may be configured to adjust the droplet generator to generate the number of the droplets having the droplet sizes. 1. An engine system , comprising:an engine, including at least one cylinder;a first source configured to supply fuel for combustion in the engine;a second source configured to supply an ignition promoter material for combustion in the engine;a droplet generator configured to generate droplets of the ignition promoter material; and determine an engine parameter;', 'determine a number of the droplets based on the engine parameter;', 'determine droplet sizes of the droplets based on the engine parameter; and', 'control the droplet generator to generate the determined number of the droplets having the determined droplet sizes., 'a controller configured to2. The engine system of claim 1 , wherein the ignition promoter material includes lubrication oil.3. The engine system of claim 1 , wherein the fuel includes natural gas.4. The engine system of claim 1 , wherein the controller is configured to determine the number of the droplets and the droplet sizes based on a diameter of the at least one cylinder.5. The engine system of claim 1 , wherein the determined ...

FUEL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

In a fuel system of an internal combustion engine, a low-pressure delivery unit for the fuel, at least indirectly delivers fuel to at least one low-pressure injection device. The fuel system further provides a high-pressure delivery unit, which has a drive region and a delivery region and at least indirectly delivers fuel to at least one high-pressure injection device. According to the invention, the fuel is first delivered by the low-pressure delivery unit to the drive region of the high-pressure delivery unit and from there onward to the low-pressure injection device and/or to the delivery region of the high-pressure delivery unit. 19-. (canceled)10. A fuel system for an internal combustion engine , having a low-pressure delivery unit for the fuel which delivers at least indirectly to at least one low-pressure injection valve and having a high-pressure delivery unit for the fuel which has a drive region and a delivery region and delivers at least indirectly to at least one high-pressure injection valve , wherein the fuel from the low-pressure delivery unit is delivered first to the drive region of the high-pressure delivery unit and from there onward to the low-pressure injection valve and/or to the delivery region of the high-pressure delivery unit.11. The fuel system as defined by claim 10 , wherein the drive region includes a recess in a housing claim 10 , in which recess a drive shaft and/or at least one delivery element claim 10 , in particular a delivery piston claim 10 , is disposed.12. The fuel system as defined by claim 10 , wherein the high-pressure delivery unit includes a quantity control valve.13. The fuel system as defined by claim 11 , wherein the high-pressure delivery unit includes a quantity control valve.14. The fuel system as defined by claim 10 , wherein the low-pressure delivery unit includes an electric fuel pump.15. The fuel system as defined by claim 13 , wherein the low-pressure delivery unit includes an electric fuel pump.16. The fuel ...

Fuel Injector Driver for Cold Start of High Resistance Injector

An engine control system includes a fuel injector and a sensor that is configured to provide a signal indicative of a temperature. A controller is in communication with the sensor. The controller includes a fuel injector driver in communication with the fuel injector. The fuel injector driver includes a saturated mode and a peak and hold mode. The controller is configured to command the fuel injector driver to control the fuel injector with one of the saturated mode or the peak and hold mode based upon the signal. For a high resistance injector, the peak and hold mode is used in cold weather conditions to break free an injector seal, and then the fuel injector driver reverts to the saturated mode. 1. An engine control system comprising:a fuel injector;a sensor configured to provide a signal indicative of a temperature; anda controller in communication with the sensor, the controller includes a fuel injector driver in communication with the fuel injector, the fuel injector driver includes a saturated mode and a peak and hold mode, the controller configured to command the fuel injector driver to control the fuel injector with one of the saturated mode or the peak and hold mode based upon the signal.2. The engine control system according to claim 1 , wherein the fuel injector includes an actuation coil surrounding a valve assembly claim 1 , an elastomeric seal is secured to the valve assembly and abuts a seat in a closed position claim 1 , the actuation coil configured to move the valve assembly and elastomeric seal from the closed position to an open position in response to fuel injector driver.3. The engine control system according to claim 2 , wherein the actuation coil has a resistance of greater than 7 ohms.4. The engine control system according to claim 3 , wherein the actuation coil has a resistance in a range of 12-16 ohms.5. The engine control system according to claim 1 , wherein the sensor is a temperature sensor.6. The engine control system according to ...

Method and Device for Operating an Internal Combustion Engine

The present disclosure provides a method for adjusting the operation of an internal combustion engine comprising: determining a gradient of an overrun-air line based on an ambient condition and a current operating point; determining a value for a cylinder air mass situated in a cylinder after closure of the gas exchange valves; and using the determined cylinder air mass to adjust one or more operating parameters of the internal combustion engine. The overrun-air line may correspond to an air mass situated in the respective cylinder after closure of the gas exchange valves at predefined operating temperature for the engine, when the engine is operated briefly without fuel metering and combustion. Determining a cylinder air mass may be based at least in part on the current operating point and the current ambient value of the at least one ambient variable. 1. A method for operating an internal combustion engine having one or more cylinders each assigned corresponding gas inlet valves and gas outlet valves , wherein gas exchange valves comprise gas inlet valves and gas outlet valves , the method comprising:determining a gradient of an overrun-air line for a current ambient value of at least one ambient variable of the internal combustion engine based at least in part on a current operating point of the internal combustion engine,wherein the overrun-air line corresponds to an air mass situated in the respective cylinder after closure of the gas exchange valves if, in the case of the internal combustion engine being at a predefined operating temperature, said internal combustion engine is operated briefly without fuel metering and combustion, anddetermining a cylinder air mass situated in the respective cylinder after closure of the gas exchange valves based at least in part on the respective current operating point and the respective current ambient value of the at least one ambient variable, andusing the determined cylinder air mass to adjust one or more operating ...

Automatic engine de-choking

A method may comprise automatically de-choking an engine and cranking the engine in response to an engine flood event, wherein automatically de-choking the engine comprises automatically cutting fuel to the engine while opening an air intake throttle.

Method Of Determining The Timing And Quantity Of Fuel Injection To Operate An Internal Combustion Engine

A method of determining the timing and quantity of fuel injection to operate an internal combustion engine is disclosed. While operating the fuel injector to perform a fuel injection; a signal of a fuel pressure within the fuel rail during the fuel injection is sampled. The signal is used to determine first and second integral transforms yielding as output a value of first and second functions having as variables the fuel rail pressure drop caused by the fuel injection and the timing parameter indicative of the instant when the fuel injection started. Values of the first and second functions are used to calculate a value of the fuel rail pressure drop caused by the fuel injection and a value of the timing parameter. A value of a fuel quantity injected by the fuel injection is calculated as a function of the value of the fuel rail pressure drop. 115-. (canceled)16. A method of operating an internal combustion engine having a fuel rail in fluid communication with a fuel pump and a fuel injector , the method comprising:operating the fuel injector to perform a fuel injection;sampling a pressure signal representative of a fuel pressure within the fuel rail during the fuel injection;using the pressure signal as input of a first integral transform yielding as output a value of a first function having as variables a fuel rail pressure drop caused by the fuel injection and a timing parameter indicative of an instant when the fuel injection started;using the pressure signal as input of a second integral transform yielding as output a value of a second function having as variables the fuel rail pressure drop caused by the fuel injection and the timing parameter indicative of the instant when the fuel injection started;using the value of the first function and the value of the second function to calculate a value of the fuel rail pressure drop caused by the fuel injection and a value of the timing parameter; andcalculating a value of a fuel quantity injected by the fuel ...

AIRFLOW CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

There is provided an airflow control device of an internal combustion engine comprising: a plasma actuator provided in an intake passage, a fuel injector for port injection provided in the intake passage so as to inject fuel toward the plasma actuator and a control unit for controlling them. The control unit is configured to actuate the plasma actuator after valve opening of an intake valve, in addition to causing the fuel injector to perform an operation of fuel injection, and causing the plasma actuator to perform an operation in a part of a valve closing period of the intake valve. Furthermore, the control unit includes a determination unit to determine whether or not water has adhered to the plasma actuator, and makes port injection operation and plasma actuator operation be performed only when water has adhered. 1. An airflow control device of an internal combustion engine comprising:a plasma actuator that is provided in an intake passage, and that induces an airflow by being actuated;a fuel injector for port injection which is provided in the intake passage so as to inject fuel toward said plasma actuator or an upstream position thereof; anda control unit for controlling said plasma actuator and said fuel injector for port injection, whereinsaid control unit is configured to actuate said plasma actuator after valve opening of an intake valve, in addition to causing said fuel injector for port injection to perform an operation of fuel injection, and causing said plasma actuator to perform operation so as to induce the airflow in a direction toward a downstream side of said intake passage, in at least a part of a valve closing period of said intake valve.2. An airflow control device of an internal combustion engine comprising:a plasma actuator that is provided in an intake passage, and that induces an airflow by being actuated;a fuel injector for port injection which is provided in the intake passage so as to inject fuel toward said plasma actuator or an ...

SYSTEM AND METHOD FOR DETERMINING COMBUSTION PROPERTIES OF A FUEL GAS

The invention determines at least one combustion property of a two-phase fuel gas. The invention comprises providing the fuel gas from substantially only a first phase of the fuel gas to a combustion engine and operating the combustion engine such that a first λ-value is achieved in the combustion process. The invention further provides the fuel gas from substantially only a second of the two phases of the fuel gas to the combustion engine, wherein the second phase is different from the first phase and wherein the same volumetric air/fuel ratio is kept as when the combustion engine was operated with the first λ-value. The invention determines a second λ-value when the combustion engine is operated with the fuel gas from substantially only the second of the two phases of the fuel gas and determines at least one first combustion property of the fuel gas based on the second λ-value. 1. A method for determining at least one combustion property of a two-phase fuel gas , the method comprising:providing the fuel gas from substantially only a first of the two phases of the fuel gas to a combustion engine;operating the combustion engine such that a first λ-value is achieved in the combustion process;providing the fuel gas from substantially only a second of the two phases of the fuel gas to the combustion engine, wherein the second phase is different from the first phase and wherein a same volumetric air/fuel ratio is kept as when the combustion engine was operated to achieve the first λ-value for the first phase of the fuel gas;determining a second λ-value when the combustion engine is operated with the fuel gas from substantially only the second of the two phases of the fuel gas; anddetermining at least one first combustion property of the fuel gas based at least on said second λ-value.2. The method according to claim 1 , wherein said at least one first combustion property relates to an energy content of the fuel gas and/or knocking properties of the fuel gas.3. The method ...

Method and Apparatus for Leak Detection

An apparatus to detect fluid sealing of fuel tank includes a flow inlet and a flow outlet. The apparatus also includes a first flow path, fluidly connected between the flow inlet and the flow outlet, where the first flow path includes a fluid pump which pressurizes fluid from the flow inlet, the first flow path including an on-off valve to allow flow from the flow inlet to the flow outlet, the first flow path including a pressure sensor, and a flow control orifice located in the first flow path between the check valve and the flow outlet. The apparatus also includes a second flow path fluidly connected between the flow inlet and the flow outlet, the second flow path including an on/off valve located therein. 1. An apparatus to detect fluid sealing of a fuel tank comprising:a flow inlet, a flow outlet, andi) a first flow path, fluidly connected between said flow inlet and said flow outlet, where said first flow path includes a fluid pump adapted to pressurize fluid from said flow inlet, said first flow path including a check valve adapted to allow flow from said flow inlet to said flow outlet, said first flow path including a pressure sensor, and a flow control orifice located in said first flow path between said check valve and said flow outlet, andii) a second flow path fluidly connected between said flow inlet and said flow outlet, said second flow path including an on/off valve located therein.2. An apparatus as claimed in wherein said fluid pump includes a pump outlet claim 1 , said pump outlet directly fluidly connected to said check valve and adapted to allow flow from said pump outlet to said flow outlet.3. An apparatus as claimed in wherein said pressure sensor is located at a point in said first flow path between said check valve and said flow control orifice.4. An apparatus as claimed in wherein said on/off valve is a solenoid operated vent valve.5. An apparatus as claimed in wherein said on/off valve is a solenoid operated vent valve.6. An apparatus as ...

SINGLE POINT ENGINE CONTROL INTERFACE

A single control for manipulating a fuel valve, a choke condition, and an ignition system condition of an engine of a portable engine powered device that simplifies starting, stopping, and operation of the engine associated with use of the device. The control includes a dial that can be rotated to positions between a first radial position and a second radial position. When the dial is in the first radial position, the fuel valve is maintained in a closed position and the ignition system is grounded such that the engine is rendered inoperable. Rotation of the dial away from the first radial position completes the ignition circuit, opens valve, and initiates a choke position suitable for subsequent starting and self-sustained operation of the engine. The dial is also axially displaceable to activate an electronic starter for engines so equipped. 1. A control assembly for manipulating operation of an internal combustion engine , the control assembly comprising:a dial that is rotatable about an axis of rotation;a barrel engaged with the dial such that rotation of the dial through a range of rotation associated with the axis of rotation causes rotation of the barrel about the axis of rotation, the barrel being constructed to engage an elongated connector that extends between the barrel and a throttle assembly of an internal combustion engine; andan extender having a first portion engaged with the barrel and a second portion engaged with a fuel shut-off valve, the extender being associated with the fuel shut-off valve such that rotation of the extender affects a position of the fuel shut-off valve and associated with the barrel such that the extender rotates for at least a portion of the range of rotation of the barrel and so that the barrel is axially movable relative to the extender.2. The control assembly of further comprising a tab that extends from the barrel and is positioned to interfere with an engine stop switch at an end of the range of rotation of the dial.3. ...

METHOD FOR PREDICTING KNOCK, METHOD FOR SUPPRESSING KNOCK, AND ENGINE SYSTEM

A method and system for predicting the occurrence of a knock which will have a predetermined intensity or higher (intense knock) in an engine that burns an air-fuel mixture of gasoline fuel. The pressure in a combustion chamber is detected during an initial stage of combustion. This pressure is compared with a preset reference value to determine whether or not the cylinder inner pressure exceeds the reference value during the combustion. When the cylinder inner pressure exceeds the reference value, it is predicted that the intense knock will occur before an end of the combustion. If the intense knock is predicted, additional fuel or other material can be injected into the combustion chamber to prevent the occurrence of the intense knock. 1. A method , comprising:obtaining, in an initial stage of combustion of an air-fuel mixture in a combustion chamber, a pressure in the combustion chamber;comparing the pressure with a preset reference value and determining whether the pressure exceeds the reference value; andpredicting, using processing circuitry, a knock will occur before an end of the combustion when the pressure exceeds the reference value.2. The method according to claim 1 , wherein:the comparing is performed within a period in which a crank angle is between 15° before a top dead center of a piston in the combustion chamber and 25° after the top dead center.3. The method according to claim 2 , wherein:the comparing is performed within a period in which a burned mass fraction is between 5% and 20% during the combustion.4. The method according to claim 2 , wherein:the comparing is performed within a period in which a burned mass fraction is between 5% and 20% during the combustion.5. The method according to claim 1 , further comprising:injecting a fluid into the combustion chamber before an end of the combustion in order to suppress the knock, when the knock is predicted to occur when the pressure exceeds the reference value.6. The method according to claim 5 , ...

Automatic Fuel Shutoff

A combination lever for a carburetor is an integrated shutoff lever and fuel valve. The combination lever includes a longitudinal portion for a handle and a cylindrical portion including a fuel path for the fuel valve. A carburetor casing is shaped to form a valve chamber and a carburetor chamber. The valve chamber supports the cylindrical portion. A directional cavity formed in the cylindrical portion of the combination lever regulates a flow of fuel to the carburetor chamber according to a rotation of the combination lever. At one position the directional cavity opens the fuel path so that fuel flows into the carburetor chamber. At another position the directional cavity closes the fuel path so that the flow of fuel is blocked. The combination lever may also include an abutment portion to engage a switch for completing an electrical shutoff path to an engine coupled to the carburetor. 1. A carburetor comprising:a carburetor chamber configured to mix air and fuel;a fuel valve chamber configured to supply the fuel to the carburetor chamber;a carburetor chassis including the fuel valve chamber and the carburetor chamber;a combination lever including a longitudinal handle and a cylindrical portion, wherein the fuel valve chamber is configured to support the cylindrical portion;a directional cavity formed in the cylindrical portion of the combination lever and configured to regulate a supply of the fuel to the carburetor chamber according to a rotation of the combination lever; andan abutment portion of the combination lever configured to engage a switch for completing an electrical shutoff path to an engine coupled to the carburetor.2. The carburetor of claim 1 , wherein the abutment portion of the combination lever is configured to linearly engage the switch in response to the rotation of the combination lever.3. The carburetor of claim 2 , wherein the abutment is configured to vertically depress a rounded portion of the switch to complete an electrical connection to ...

VEHICULAR SUCTION NOISE TRANSMISSION SYSTEM

A vehicular suction noise transmission system includes a first intake apparatus, a second intake apparatus, a fuel recirculation apparatus, and a sound creator apparatus. The first intake apparatus is connected to an internal combustion engine mounted in a vehicular engine compartment. The second intake apparatus is connected to the internal combustion engine. The sound creator apparatus includes a first sound creator end, a second sound creator end, and a sound creator. The first sound creator end is connected to the second intake apparatus. The second sound creator end is in communication with a vehicle interior. The sound creator is provided to separate a second intake apparatus side and a vehicle interior side and configured to vibrate according to an intake pulsation so as to transmit a suction noise of the internal combustion engine to the vehicle interior. 1. A vehicular suction noise transmission device that transmits a suction noise of an internal combustion engine mounted in a vehicular engine compartment to a vehicle interior , the vehicular suction noise transmission device comprising:a first intake system and a second intake system that are connected to the internal combustion engine;a fuel recirculation system, a first end of which is connected to the internal combustion engine or a fuel tank and a second end of which is connected to the first intake system; anda sound creator system including a first end that is connected to the second intake system, a second end that is in communication with the vehicle interior, and a sound creator that is provided so as to separate a second intake system side and a vehicle interior side from each other and that vibrates due to an intake pulsation.2. The vehicular suction noise transmission device according to claim 1 , whereinthe first and second intake systems each include, in order from an upstream side, a supercharger, an intercooler, a throttle valve, and an intake manifold, the first and second intake systems ...

FUEL SUPPLY DEVICE

A fuel supply device () has a valve () in a fuel passage between a fuel pump () and an engine (). In a storage portion of an ECU (-) is stored a relationship between a fuel pressure and a flow rate, which are required by the engine, and voltage which is supplied to a motor (). The ECU senses voltages V, V, V supplied to the motor from a controller () when the valve is opened from change points C′, C′, C′ at which a characteristic between the voltage and the current which are supplied to the motor () is changed. Then, the ECU corrects the voltage stored in the storage portion on the basis of differences between voltages V, V, V stored in the storage portion at the change points C, C, C and the voltages V, V, V when the valve is opened. In this way, the fuel supply device can correctly control the motor in correspondence to the fuel pressure and the flow rate which are required by the engine. 1. A fuel supply device for supplying an engine with fuel sucked up from a fuel tank , the fuel supply device comprising:a fuel pump for sucking up the fuel from the fuel tank by rotation of a motor;a valve that is provided in a fuel passage for supplying the engine with the fuel sucked up by the fuel pump and that is opened when the fuel flowing in the fuel passage reaches a specified pressure to thereby discharge the fuel from the fuel passage;a storage portion for storing a relationship among a fuel pressure and a flow rate, which are required by the engine, and voltage, current, or the number of revolutions of the motor, which is supplied to the motor;a controller for supplying the motor with the voltage and the current based on the relationship stored in the storage portion;a sensing portion for sensing the voltage or the current, which is supplied to the motor by the controller when the valve is opened, or the number of revolutions of the motor when the valve is opened, from a change point at which a characteristic of the current, the voltage, or the number of revolutions ...

CONTROL APPARATUS FOR VEHICLE

A control apparatus for a vehicle may include an engine, a fuel tank, a feed pump, a pressure sensor, a motor and an electric storage apparatus. The feed pump feeds the fuel to a port injection valve. The pressure sensor detects a fuel pressure that is fed to the port injection valve. The motor performs cranking of the engine at start time of the engine. The control apparatus includes an ECU. The ECU controls the feed pump based on a detection value of the pressure sensor and controls the motor in order to start the engine. The ECU controls the feed pump and the motor such that the electric storage apparatus feeds electric power to the motor in preference to the feed pump, when an electric power that the electric storage apparatus is able to output at the start time of the engine is less than a determination threshold. 1. A control apparatus for a vehicle , the vehicle including:an internal combustion engine including a port injection valve, the port injection valve being configured to inject fuel into an intake passage of the internal combustion engine;a fuel tank for storing the fuel;an electric feed pump configured to suck the fuel from the fuel tank and feed the fuel to the port injection valve;a fuel pressure sensor configured to detect a pressure of the fuel that is fed to the port injection valve;a motor configured to perform cranking of the internal combustion engine at a start time of the internal combustion engine; andan electric storage apparatus configured to feed electric power to the electric feed pump and the motor, [ 'control the electric feed pump based on a detection value of the fuel pressure sensor;', 'at least one electronic control unit programmed to, 'control the electric feed pump and the motor to cause the electric storage apparatus to feed electric power to the motor in preference to the electric feed pump, when a first electric power is less than a determination threshold, the first electric power being an electric power that the electric ...

Method and unit for operating a fuel metering system in an internal combustion engine

A method and a unit for operating or for the operation of a fuel metering system of an internal combustion engine, in particular in a motor vehicle, and it being provided, in particular, that at least one operating variable of the internal combustion engine is detected, a dynamic operating state of the internal combustion engine is detected based on the at least one detected operating variable, and a dynamic correction to the fuel metering system of the internal combustion engine is carried out for a detected dynamic operating state of the internal combustion engine, taking into account the efficiency of an NOx exhaust gas aftertreatment system.

HIGH PRESSURE FUEL PUMPS WITH MECHANICAL PRESSURE REGULATION

Methods are provided for operating a high pressure fuel pump to maintain one or more selectable, mechanically-regulated pressures. To reduce the cost and complexity associated with a fuel system that involves both port and direct fuel injection, a fuel and pump system is needed that removes complicated electronic control without degrading pump and engine performance. High pressure fuel pumps, associated systems, and methods are provided that involve adding one or more pressure relief valves and solenoid valves in order to maintain one or more discrete, substantially constant pressures of the high pressure fuel pumps and attached direct injection fuel rails. 1. A method , comprising:during a first high pressure fuel pump operating mode, regulating a first fuel rail pressure via a first pressure relief valve; andduring a second high pressure fuel pump operating mode, regulating a second fuel rail pressure via a second pressure relief valve that is in parallel with the first pressure relief valve and separated by a solenoid valve to direct fuel backflow to the first or second pressure relief valve.2. The method of claim 1 , wherein switching between the first and second high pressure fuel pump operating modes includes opening or closing of the solenoid valve.3. The method of claim 1 , wherein the high pressure fuel pump is not connected to an external electronic controller.4. The method of claim 1 , wherein a fuel rail pressure sensor is not provided on a direct injection fuel rail fluidly coupled to the high pressure fuel pump.5. The method of claim 1 , further comprising a third pressure relief valve positioned in parallel with the first and second pressure relief valves claim 1 , the third pressure relief valve configured to regulate a third fuel rail pressure during a third high pressure fuel pump operating mode.6. The method of claim 5 , further comprising an upstream solenoid valve positioned to direct fuel backflow to either the second or third pressure relief ...

FUEL CONTROL VALVE ASSEMBLY

A fuel control valve assembly that includes a ball bearing assembly and retainer assembly for a mixture control valve assembly and idle control valve assembly in use with general aviation fuel injector servos is disclosed. The assembly desirably reduces friction and wear on the components of the fuel control valve assembly. 1a shaft;a bushing;a roll pin;a stop bracket adapted to be secured adjacent one end of the shaft;a spring arranged over a portion of the shaft;a spring retainer adapted to retain a first end of the spring opposite the stop bracket;a retainer assembly; anda bearing assembly arranged substantially between the spring retainer and the retainer assembly.. A fuel mixture control assembly comprising: This application is a Continuation of U.S. patent application Ser. No. 15/152,155 filed May 11, 2016, which is a Continuation in Part of U.S. patent application Ser. No. 15/099,043 filed Apr. 14, 2016, which claims priority to U.S. Provisional Patent Application 62/147,042, filed Apr. 14, 2015, all of which are fully incorporated herein by reference. This application also claims priority to U.S. Provisional Patent Application No. 62/159,959 filed May 11, 2015, which is fully incorporated herein by reference.None.The present invention relates to a fuel injection system and valve body assemblies. More specifically, the present invention relates to a fuel injection servo system for an aircraft engine and improved valve assemblies related thereto.Fuel injection systems have replaced carburetors in most modern aircraft engines. Presently, fuel injection systems provide greater performance, economy, and reliability relative to their carburetor counterparts.Most prior art fuel injection systems used in aircraft engines are volume-air flow type systems, which are based on the principle of measuring air flow to establish correct fuel flow to the engine cylinders. These systems include a throttle body fuel injection servo which measures the amount of air moving past ...

FUEL SUPPLY APPARATUS IN CONSTRUCTION MACHINE

A fuel supply apparatus able to stop actuating of a fuel supply pump without mounting a special fuel supply sensor when the fuel supply is stopped or becomes slow, includes a control section which calculates an amount of the fuel in the fuel tank based upon a signal from a fuel gauge, and outputs the result to a fuel meter. The control section also calculates from the fuel gauge signal the amount of the supplied into the fuel tank per unit of time, and if the amount of the fuel supplied per unit of time is determined to be less than a set supply rate, the fuel supply pump is stopped so that a malfunction of the fuel supply can be detected without mounting a special fuel supply sensor. 1. A fuel supply apparatus in a construction machine including a fuel tank , the apparatus comprising:a fuel supply pump for supplying fuel to the fuel tank,a strainer that filters the fuel supplied to the fuel tank, and fuel supply determining means for determining whether or not fuel is being fed into the fuel tank using the signal from the fuel gauge when the fuel supply pump is active, and', 'fuel supply pump stopping means for stopping the fuel supply pump based upon an indication by the fuel supply determining means., 'a control section for calculating a remaining amount of fuel in response to a signal from a fuel gauge measuring the amount of fuel remaining in the fuel tank, and for outputting the calculated remaining amount to a fuel meter for displaying the amount, wherein the control section further includes2. The fuel supply apparatus in a construction machine according to claim 1 , wherein the fuel supply determining means determines the fuel being supplied unit of time claim 1 , and when the fuel supply amount per unit of time is not larger than a set supply rate claim 1 , the fuel supply pump stopping means stops the fuel supply pump.3. The fuel supply apparatus in a construction machine according to claim 1 , further comprising notification means claim 1 , wherein the ...

FUEL SUPPLY SYSTEM

A seal is fit between a cylindrical connector support which is protruded on an upper end face of a cylindrical barrel part of an electrically-powered high pressure pump embedded in a housing and from which a power connector is exposed and an inner peripheral surface of a hollow part formed in a top face of a lid body such that the seal is flush with a top face of the hollow part. A flange having an outer shape which is the same as an inner shape of the hollow part is protrudingly provided at a predetermined height position on a circumference of the connector support such that a lower surface of the flange is disposed flush with a top face of the hollow part. 1. A fuel supply system , comprising: a housing main body which forms a fuel storage tank which doubles as a reservoir, the housing main body having an upper face having an opening; and', 'a lid body which airtightly covers the opening in the upper face, the lid body having a fuel discharge pipe which have a pipe shape and is formed on a rear surface of the lid body, and, 'a housing, the housing includingthe fuel supply system further comprising, in the housing: an electrically-powered pump embedded in the high pressure pump; and', 'a cylindrical barrel part having a suction port in a part of the cylindrical barrel part;', 'a cylindrical discharge port; and', 'a cylindrical connector support, from a tip part of which a power connector is exposed, the cylindrical discharge port and the cylindrical connector support each projecting on an upper end face of the cylindrical barrel part,, 'a high pressure pump configured to suction fuel stored in the fuel storage tank and to supply the fuel to an engine by discharging the fuel, the high pressure pump includingan upper part of the barrel part being airtightly fit in and held by the lid body, via a seal between the upper part of the barrel part and a cylindrical barrel part connection piece provided, downward in a vertical direction, on a top face of the lid body,the ...

FUEL TANK

A fuel tank includes a tank main body having an opening, a pump unit mounted to a mounting position on a bottom of the tank main body through the opening and having a fuel pump and a pump retaining member retaining the fuel pump and, and a guide means configured to guide the pump unit from an opening side of the tank main body to the mounting position on a bottom side of the tank main body. The guide means includes a guide rail provided on the tank main body and a slider provided on the pump unit. The slider is configured to be slidably engaged with the guide rail. 1. A fuel tank comprising:a tank main body having an opening;a pump unit configured to be mounted to a mounting position on a bottom of the tank main body through the opening and having a fuel pump and a pump retaining member retaining the fuel pump; anda guide means configured to guide the pump unit from an opening side of the tank main body to the mounting position on a bottom side of the tank main body;wherein the guide means includes a guide rail provided on the tank main body and a slider provided on the pump unit; andwherein the slider is configured to be slidably engaged with the guide rail.2. The fuel tank according to claim 1 , wherein a pair of the guide means are arranged on both sides of the pump unit.3. The fuel tank according to claim 1 , wherein the tank main body has a sub tank disposed on the bottom of the tank main body and configured to store fuel to be sucked into the fuel pump; andwherein the guide rail extends to a position above an upper limit of the sub tank for storing the fuel in a horizontal attitude.4. The fuel tank according to claim 1 , further comprising:a rotation support means configured to rotatably support a longitudinal end portion of the pump unit inserted into the tank main body;wherein the rotation support means includes a tank main body side support portion provided on the tank main body, and a pump unit side support portion provided on the pump unit;wherein the ...

METHOD AND CONTROLLER FOR SETTING THE COMBUSTION PARAMETERS FOR AN INTERNAL COMBUSTION ENGINE OPERATED WITH LIQUEFIED NATURAL GAS

A method is provided for setting combustion parameters of an internal combustion engine operated with liquefied natural gas, the combustion parameters being sensed during operation of the internal combustion engine and being stored upon shutoff of the internal combustion engine. Also provided is a controller for carrying out the method. Provision is made that during a stoppage of the internal combustion engine, the duration of the stoppage, the ambient temperature and/or tank temperature, and the pressure in a liquefied gas tank are sensed; the influence thereof on a required adaptation of the combustion parameters that are to be set is identified from a characteristics diagram; and from the stored combustion parameters and the adaptation, initial combustion parameters are identified and are used upon startup of the internal combustion engine in order to control it. 1. A method for setting a combustion parameter of an internal combustion engine operated with liquefied natural gas , comprising:sensing the combustion parameter during operation of the internal combustion engine;storing the combustion parameter upon shutoff of the internal combustion engine;during a stoppage of the internal combustion engine, sensing a pressure of a liquefied gas tank and at least one of a duration of the stoppage, an ambient temperature, and a tank temperature;identifying from a characteristics diagram an influence of at least one of the pressure of the liquefied gas tank, the duration of the stoppage, the ambient temperature, and the tank temperature on a required adaptation of the combustion parameter that is to be set; andfrom the stored combustion parameter and the adaptation, identifying an initial combustion parameter; andusing the initial combustion parameter upon startup of the internal combustion engine in order to control the internal combustion engine.2. The method as recited in claim 1 , wherein for the duration of the stoppage claim 1 , a time course of at least one of an ...

HIGH PRESSURE FUEL PUMP AND FUEL SUPPLY SYSTEM

A high pressure fuel pump includes: a pump body that forms a suction passage and a pressurizing chamber and slidably supports a plunger; and a control valve that opens a connection between the suction passage and the pressurizing chamber in a suction stroke, during which the plunger is driven toward a suction side for suctioning fuel into the pressurizing chamber, while the control valve controls closing timing, at which the connection between the suction passage and the pressurizing chamber is closed by the control valve in a delivery stroke, during which the plunger is driven toward a delivery side for delivering the fuel out of the pressurizing chamber. The pump body forms a release passage that is communicated with the suction passage. The release passage relieves the fuel, which is pressurized by the plunger, from the pressurizing chamber before the closing timing during the delivery stroke. 1. A high pressure fuel pump for delivering fuel , which is suctioned into a pressurizing chamber from a low pressure fuel pump through a suction passage , to a supply destination after pressurizing the fuel in the pressurizing chamber with a plunger , the high pressure fuel pump comprising:a pump body that forms the suction passage and the pressurizing chamber and slidably supports the plunger; anda control valve that opens a connection between the suction passage and the pressurizing chamber in a suction stroke, during which the plunger is driven toward a suction side for suctioning the fuel into the pressurizing chamber, while the control valve controls closing timing, at which the connection between the suction passage and the pressurizing chamber is closed by the control valve in a delivery stroke, during which the plunger is driven toward a delivery side for delivering the fuel out of the pressurizing chamber upon pressurization of the fuel, wherein:the pump body forms a release passage that is communicated with the suction passage; andthe release passage relieves the ...

SYSTEMS AND METHODS FOR IMPROVING VEHICLE ENGINE STABILITY

Methods and systems are provided for conducting a diagnostic on a fuel tank isolation valve that regulates a flow of fuel vapors from a fuel tank to an evaporative emissions system. In one example, a method comprises determining whether the fuel tank isolation valve is stuck in a first open position or a second open position based on a time duration between commanding open a canister purge valve to direct fuel vapors to an engine, and an exhaust gas sensor indicating a rich air-fuel ratio. In this way, appropriate mitigating action may be taken in response to the fuel tank isolation valve being stuck in either the first open position or the second open position. 1. A method comprising:diagnosing whether a fuel tank isolation valve positioned in a load conduit between a fuel system and a fuel vapor storage canister is stuck in a first open position or a second open position based on a time duration between commanding open a canister purge valve to direct fuel vapors to an engine and an exhaust gas sensor indicating a rich air-fuel ratio as compared to a stoichiometric air-fuel ratio.2. The method of claim 1 , wherein the fuel tank isolation valve comprises a three-way isolation valve configurable in a first position claim 1 , a second position and a third position claim 1 , where the first position comprises a closed position claim 1 , the second position comprises the first open position claim 1 , and the third position comprises the second open position.3. The method of claim 1 , further comprising:sealing the fuel system and fuel vapor storage canister from the engine and from atmosphere;monitoring a pressure in the fuel system; andwherein commanding open the canister purge valve is in response to the pressure in the fuel system being greater than a predetermined positive pressure threshold with respect to atmospheric pressure.4. The method of claim 1 , wherein the fuel tank isolation valve being stuck in the first open position directs fuel vapors from the fuel ...

RETURNLESS FUEL SYSTEM WITH ACCUMULATOR

A returnless fuel system includes a fuel injector, an accumulator, a first fuel pump assembly and a second fuel pump assembly. The accumulator is adapted to store pressurized fuel that is utilized by the fuel injector during prescribed conditions. The first fuel pump assembly is adapted to supply the pressurized fuel at a controlled pressure to the fuel injector. The second fuel pump assembly is in fluid communication with the accumulator and the first fuel pump assembly, and is adapted to provide the pressurized fuel at a controlled pressure to the first fuel pump assembly and the accumulator. 1. A returnless fuel system comprising:a fuel injector;an accumulator adapted to store pressurized fuel that is utilized by the fuel injector during prescribed conditions;a first fuel pump assembly adapted to supply the pressurized fuel at a first controlled pressure to the fuel injector; anda second fuel pump assembly in fluid communication with the accumulator and in fluid communication with the first fuel pump assembly independently from the accumulator, and adapted to provide the pressurized fuel at a second controlled pressure to the first fuel pump assembly and the accumulator.2. The returnless fuel system set forth in claim 1 , further comprising:{'sub': 'acc', 'at least one pressure sensor configured to measure accumulator fuel pressure (P) upstream of the first fuel pump assembly and output a pressure signal;'}{'sub': 'dis', 'one or more non-transitory storage mediums configured to store a data file including a preprogrammed minimum first accumulator discharge pressure (P); and'}{'sub': acc', 'dis', 'acc', 'dis, 'one or more processors configured to receive the pressure signal and compare the measured accumulator fuel pressure (P) to the preprogrammed minimum first accumulator discharge pressure (P) and maintain the second fuel pump assembly in an inactive state while the accumulator provides the pressurized fuel to the first fuel pump assembly if the measured ...

Tolerance and Wear Compensation of a Fuel Pump

A method determines an inflection point OP of a parameter profile i, n which is representative of a component tolerance and a state of wear of a fuel pump. The fuel pump is provided for a fuel supply system for use in a device equipped with an internal combustion engine. The device being a passenger car, utility vehicle and/or a stationary or mobile power generator. 121-. (canceled)22122. A method for determining an inflection point (OP) of a parameter profile (i , n) representative of a component tolerance and a state of wear of a fuel pump () , wherein the fuel pump is provided for a fuel supply system () for use in a device equipped with an internal combustion engine , wherein the method comprises:{'b': 26', '20', '2', '12', '28, 'i': 'b', 'under defined conditions, at least partially actively shutting off a fuel-conducting point (, ) of a feed line of the fuel supply system () downstream of the fuel pump (), so as to at least reduce a flow of fuel to the internal combustion engine (), by'}{'b': 26', '20', '24', '36', '2, 'i': 'b', 'incrementally increasing a rotational speed n of a fuel pump motor so as to increase a pressure upstream of the shut-off fuel-conducting point (, ) while simultaneously determining a phase current i that occurs in the fuel pump motor, wherein the rotational speed is increased until a valve (, ) of the fuel supply system () opens (OP=opening point) so as to reduce the pressure, wherein individual rotational speed stages are assigned a determined value for the phase current i, and by'}{'b': 24', '36, 'sub': 'OP', 'approximating a first set of value pairs (i, n) below an inflection point (OP) by a first straight line, approximating of a second set of value pairs (i, n) above the inflection point (OP) by a second straight line, and determining an intersection point between the two straight lines, wherein the intersection point corresponds to the inflection point (OP) that corresponds to the opening time (OP) of the valve (, ), wherein a ...

An arrangement for protecting a high-pressure accumulator fuel injection system

A system for protecting a high-pressure accumulator fuel injection system of an internal combustion engine against excessively high fuel pressures occurring in a high-pressure accumulator of the fuel injection system caused by a malfunction in the fuel injection, wherein the system comprises a member measuring the fuel pressure inside the high-pressure accumulator and sending information about this pressure to a control unit. An electrically controllable inlet valve to a pumping element of a high-pressure pump is included in the system and controlled by the control unit to be transferred to a continuously open or closed state, if the pressure measured exceeds a predetermined pressure level for stopping the feeding of fuel by the pumping element to the high-pressure accumulator.

Fuel-injection system for motor-vehicle engine

A motor-vehicle engine system has an internal-combustion four-cycle engine having a fuel-supply manifold and operable at variable speed with a fuel requirement dependent on speed, a substantially closed but vented fuel tank holding a supply of gasoline, a fuel pump having an input connected to the tank and an output, and a fuel-feed line connected between the fuel-pump output and the fuel-supply manifold. A controller connected to the engine and to the pump operates the fuel pump at a throughput rate equal to between 5% and 40%, preferably 10% to 30%, more than the instantaneous fuel requirements of the engine. A return line connected to the fuel tank is provided with an overpressure valve that opens and returns to the tank fuel in the manifold that is in excess of the engine's instantaneous requirements and thereby maintains a predetermined constant pressure in the fuel-supply manifold.

Fuel supply apparatus having abnormality detecting function

Electric current to a fuel pump in an engine fuel supply system is controlled so that a deviation in the number of pump rotations between a predetermined reference number of rotations of the fuel pump and an actual number of rotations thereof is within a predetermined range. When the deviation exceeds a predetermined range, it is determined that the fuel supply system is abnormal and at this time the operation of the fuel pump is limited. In this manner, the electric power consumed by the fuel pump is reduced because excess fuel is not circulated in the fuel supply system, thus accomplishing an improved reliability.

Pressure control for the fuel system of an internal combustion engine

A fuel system for an internal combustion engine wherein the fuel pressure is maintained within a desired predetermined range. An electric fuel pump supplies fuel at a pressure proportional to the electric power applied to the pump. Control circuitry compares a voltage signal corresponding to the fuel pressure within a predetermined voltage range corresponding to a predetermined fuel pressure range. When the voltage signal is below the predetermined voltage range, the electric power applied to the electric pump is increased; when the voltage signal is above the predetermined voltage range, the electric power applied to the electric pump is decreased. The control circuit may further increase or decrease the electric power at a predetermined rate.

Fuel pump a module for auxiliary cup is form increase to fuel charge quantity

본 발명은 연료충전량이 증가되도록 보조컵이 형성된 연료펌프모듈에 관한 것으로 상세하게는 자동차의 연료탱크 내부에 설치되어 필터와 펌프가 내장되는 리저브컵과, 상기 리저브컵의 일측에 결합부를 통해 결합되지며 연료가 일시 저장되어지는 보조컵과, 상기 리저브컵의 펌프와 연결되고 엔진과 연결되어 연료를 공급하는 플랜지부로 구성되어지는 것을 특징으로 하는 연료충전량이 증가되도록 보조컵이 형성된 연료펌프모듈에 관한 것이다. The present invention relates to a fuel pump module in which an auxiliary cup is formed so as to increase the fuel filling amount, and in particular, a reserve cup installed inside a fuel tank of a vehicle and a filter and a pump built therein, and not coupled to one side of the reservoir cup. The fuel pump module has a secondary cup is formed so that the fuel cup is increased, characterized in that the auxiliary cup is temporarily stored, and the flange is connected to the pump of the reserve cup and connected to the engine to supply fuel It is about.

Method for controlling internal combustion engine during its operation

FIELD: engines and pumps.SUBSTANCE: invention can be used in control systems of internal combustion engines (ICE). In the proposed method the air flow is regulated by a throttle from a driver's pedal. According to the signals of limit switches, the position of idling and the position of the throttle valve switch the Pulse Width Modulator (PWM) modes of the Electronic Control Unit (ECU) by engine operation. PWM ECU generates a pulse to the fuel injection nozzle synchronously with the working position of an engine shaft with duration proportional to the absolute static air pressure in an intake channel. Depending on the operation mode of the engine, the ECU switches, and from a cab, a driver adjusts the proportionality coefficients of the air-fuel ratio in the PWM: when idle, the proportionality factor is set at the maximum frequency of the idling speed, during acceleration, the proportionality coefficient is set upon reaching the selected acceleration and, with uniform motion, the proportionality coefficient is determined by limiting the power and speed of movement without the possibility of exceeding it.EFFECT: selection of the required engine power for movement and fuel economy.1 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F02D 41/08 F02D 41/10 F02D 33/00 F02D 35/00 (11) (13) 2 677 025 C1 (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F02D 41/045 (2018.08); F02D 41/08 (2018.08); F02D 41/10 (2018.08); F02D 33/006 (2018.08) (21)(22) Заявка: 2018100370, 09.01.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Новоковский Вячеслав Иванович (RU) Дата регистрации: 15.01.2019 (56) Список документов, цитированных в отчете о поиске: RU 2013122001 A, 20.11.2014. US 4593663 A1, 10.06.1986. RU 2267630 C2, 10.01.2006. US 4643151 A1, 17.02.1987. (45) Опубликовано: 15.01.2019 Бюл. № 2 2 6 7 7 0 2 5 (54) Способ регулирования двигателя внутреннего сгорания при ...

Patent FR2262203A1

System of fuel injection under high pressure

FIELD: engines. SUBSTANCE: invention can be used in fuel feed systems of internal combustion engines (ICE). Proposed is a method of control over operation of system (1) of fuel injection under high pressure for ICE (8), while implementing which fuel is supplied by fuel priming pump (3) to high pressure pump (2), fuel by high pressure pump (2) is supplied under high pressure into common fuel line (10) of high pressure, fuel before starting ICE (8) is supplied by fuel priming pump (3) into common fuel line (10) of high pressure, herewith fuel priming pump (3) is used with reverse flow of fuel, which in the first direction of its supply to high pressure pump (2) and in the second direction of its supply, opposite to the first feed direction, is supplied prior to starting ICE (8) into common fuel line (10) of high pressure. Also proposed is a system of fuel injection intended to implement the described method. EFFECT: technical result is simplification of the fuel feed system and shorter time for the engine starting. 17 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 603 711 C2 (51) МПК F02M 37/04 (2006.01) F02M 59/42 (2006.01) F02M 63/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014106613/06, 12.06.2012 (24) Дата начала отсчета срока действия патента: 12.06.2012 (72) Автор(ы): ЛАНГЕНБАХ Кристиан (DE) (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.08.2015 Бюл. № 24 R U 22.07.2011 DE 102011079673.8 (45) Опубликовано: 27.11.2016 Бюл. № 33 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 24.02.2014 2 6 0 3 7 1 1 (56) Список документов, цитированных в отчете о поиске: RU 2062345 C1, 20.06.1996. SU 44415 A1, 30.09.1935. DE 102009029573 A1, 24.03.2011. US 20080017170 A1, 24.01.2008. US 6604508 B2, 12.08.2003. (86) Заявка PCT: 2 6 0 3 7 1 1 R U C 2 C 2 EP 2012/061123 (12.06.2012) (87) Публикация заявки PCT: WO ...

Fuel Level Indicator of Hydrogen Fuel Vehicle

본 고안은 유량계를 사용하여 연료잔량을 나타내는 지시장치에 있어서 하나의 유량계를 사용하여 수소연료의 잔량을 지시할수 있도록 하여 비용을 절감하고 구조를 간단하게 하는 수소연료자동차의 연료잔량지시장치에 관한 것이다. 본 고안은 수소연료자동차의 연료잔량지시장치는 연료주입구쪽의 연료라인(4)에 연료주입구방향으로만 연료의 유동을 가능하게 하도록 제1체크밸브(5)를 설치하고, 엔진쪽의 연료라인(6)에 수소연료탱크(1)방향으로만 연료의 유동을 가능하게 하도록 제2체크밸브(7)를 설치하며, 또한 연료주입구쪽의 연료라인(4)과 엔진쪽의 연료라인(6)사이에 분기라인(8)을 연결하며, 그 분기라인(8)에 유량을 감지하여 그에 대응하는 전기적신호를 출력하는 유량계(9)를 설치한 것을 특징으로 한다.

Fuel feeder for internal combustion engine

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Overheat preventing apparatus for fuel supply system controlling unit

HIGH PRESSURE FUEL INJECTION SYSTEM

1. Способ управления работой системы (1) впрыскивания топлива под высоким давлением для двигателя (8) внутреннего сгорания (ДВС), при осуществлении которого топливо подают топливоподкачивающим насосом (3) в насос (2) высокого давления, топливо насосом (2) высокого давления подают под высоким давлением в общую топливную магистраль (10) высокого давления, топливо перед пуском ДВС (8) подают топливоподкачивающим насосом (3) в общую топливную магистраль (10) высокого давления, отличающийся тем, что используют топливоподкачивающий насос (3) с реверсивным потоком топлива, которое в первом направлении его подачи подают в насос (2) высокого давления, а во втором направлении его подачи, противоположном первому направлению подачи, подают перед пуском ДВС (8) в общую топливную магистраль (10) высокого давления.2. Способ по п. 1, отличающийся тем, что перед пуском ДВС (8) топливо подают топливоподкачивающим насосом (3) в общую топливную магистраль (10) высокого давления в обход насоса (2) высокого давления.3. Способ по п. 1, отличающийся тем, что в общую топливную магистраль (10) высокого давления топливо из насоса (2) высокого давления подают по топливопроводу (12) высокого давления, а из топливоподкачивающего насоса (3) - по топливопроводу (13) низкого давления.4. Способ по п. 1, отличающийся тем, что с помощью обратных клапанов (17, 18, 19, 20) управляют подачей топлива топливоподкачивающим насосом (3) либо в насос (2) высокого давления, либо в общую топливную магистраль (10) высокого давления.5. Способ по п. 1, отличающийся тем, что топливо подают топливоподкачивающим насосом (3) в общую топливную магистраль (10) высокого давления по меньшей мере в течение 1,5, 10 или 20 сек� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2014 106 613 A (51) МПК F02M 59/42 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014106613/06, 12.06.2012 (71) Заявитель(и): РОБЕРТ БОШ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы ...

Variable fuel pressure system and fuel pump deviation study and control method thereof

가변 연료 압력 시스템 및 그의 연료펌프 편차학습 및 제어방법에 관한 것으로, 연료펌프 모터의 구동에 의해 연료펌프로부터 펌핑되어 연료공급라인을 통해 고압펌프로 공급되는 연료의 현재 압력을 감지하는 압력감지부, 차량의 메인 제어부로부터 수신된 목표 압력과 상기 압력감지부에서 감지된 현재 압력에 기초해서 상기 모터를 구동하기 위한 모터 구동전압을 산출하고 산출된 모터 구동전압을 기반으로 상기 모터를 구동하도록 제어신호를 발생하는 제어부, 상기 제어부의 제어신호에 따라 상기 모터를 구동하는 모터 구동부 및 차량의 미리 설정된 상태에서 연료 펌프 유량을 학습하고 학습 데이터를 저장하고 상기 제어부의 모터 인가전압 산출시 저장된 학습 데이터를 제공하는 펌프 유량 학습부를 포함하는 구성을 마련하여, 차량의 아이들 상태에서 압력 추종 제어가 정상적으로 수행되면, 연료펌프 유량을 학습하고, 학습된 데이터를 반영해서 모터 인가전압의 최대 및 최소 제한치 사이 범위로 제한해서 연료펌프의 구동을 제어할 수 있다는 효과가 얻어진다.

Fuel injectors in automotive engines

자동차 엔진의 연료 분사장치에 관한 것으로서, 특히 인젝터로부터 분사되는 연료를 미립화 및 무화시켜, 연소실 내에서 공기와의 혼합기의 형성을 촉진하고, 혼합기의 완전 연소를 실현하고자 한다. 또한, 엔진의 출력을 향상시키고, 배기가스를 감소시키고자 한다. 이를 위하여, 상기한 연료 분사장치는 흡기 밸브(4)의 개방시 피스톤의 부압으로 공기가 유입되고, 흡기 매니폴드(5)와 연결된 흡기 포트(2)와, 연료펌프로부터 공급된 연료를 상기 흡기 포트로 분사하는 인젝터(1)와, 그 인젝터의 노즐부(1a)와 배기 매니폴드(6)의 사이에 연결된 배기가스 재순환 관로(7)를 포함하는 기술적 구성으로 이루어진다. 또한, 상기 배기가스 재순환 관로에는 압력 조절기(8)가 설치된다.

Two-way valve of the fuel system of a vehicle

본 고안은 차량의 연료 장치용 2웨이 밸브에 관한 것으로, 양 방향으로 개폐되는 밸브부재(36)와,상기 밸브부재(36)를 탄성적으로 지지하는 스프링(38)과, 상기 밸브부재(36) 및 상기 스프링(38)을 수용하는 케이싱(40)과, 연료 탱크내의 증발연료가 유입되는 유입구(32)와,상기 증발 연료를 차콜 캐니스터로 배출시키는 배출구(34)와, 상기 유입구(32)가 장착된 상기 케이싱(40)의 내측벽에 배치되는 고무 실 부재 (42) 및 상기 고무실 부재(42)가 걸리도록 상기 유입구의 길이 방향으로 돌출되어 형성된 걸림턱부(44)를 구비하는 것을 특징으로 한다. The present invention relates to a two-way valve for a fuel device of a vehicle, the valve member 36 which opens and closes in both directions, a spring 38 for elastically supporting the valve member 36, and the valve member 36 And a casing 40 for accommodating the spring 38, an inlet 32 through which the evaporated fuel in the fuel tank flows, an outlet 34 for discharging the evaporated fuel to the charcoal canister, and the inlet 32 Is provided with a rubber seal member (42) disposed on the inner wall of the casing (40) equipped with the locking projection (44) formed to protrude in the longitudinal direction of the inlet so that the rubber seal member (42) is caught. It is done.

Leanburn system for interner combustion engine in an automobile

희박한 공연비중에서 연소 효율이 증대되게 하고, 엔진이 출력이 향상되게 하며, 배기가스의 유해성분이 저감되도록 하는 내연기관의 린번시스템에 관한 것으로서, 이것은 연료량을 제한하는 연료공급 조절장치(10)가 인젝터(23)와 연료 탱크(24)를 잇는 연료 라인(22a)상에 설치되어서, 그 연료 라인의 내경을 변화시켜 단면적이 축소되게 하므로서, 상기 인젝터를 통하여 공기와 연료의 혼합공간으로 분사되는 연료량을 제한하되, 90:1 내지 240:1의 범위에서 공연비가 형성되게 하고; 연소실에 설치된 스파크 발생장치(31)가 스파크의 용량을 증가시키기 위해 방사상으로 확대 형성된 센타전극(314)및 확장부(316)를 갖는 그라운드 전극(315)으로 구성되어서, 상기 비율의 공기와 연료의 혼합기가 완전 연소되게 하는 기술적 구성으로 이루어진다. In the lean burn system of the internal combustion engine to increase the combustion efficiency in the lean air-fuel ratio, to improve the engine output, and to reduce the harmful components of the exhaust gas, which is a fuel supply control device 10 for limiting the amount of fuel is injector ( 23) is installed on the fuel line 22a connecting the fuel tank 24 to limit the amount of fuel injected into the mixed space of air and fuel through the injector by changing the inner diameter of the fuel line so that the cross-sectional area is reduced. Wherein an air-fuel ratio is formed in the range of 90: 1 to 240: 1; The spark generator 31 installed in the combustion chamber is composed of a center electrode 314 radially enlarged to increase the capacity of the spark, and a ground electrode 315 having an extension 316. It consists of a technical configuration that allows the mixer to burn completely. 결과적으로, 연료공급 조절장치 및 스파크 발생장치의 조합으로 구성된 내연기관의 린번시스템은 엔진의 각 실린더로 보내지는 연료량을 극히 제한적으로 조절하여 초희박 공연비가 실현되게 하고, 그에 맞추어 스파크의 용량을 증대시켜 상기 공연기를 갖는 혼합기가 폭발적이고 완전하게 점화되게 하며, 배기가스가 퍼펙트하게 저감될 수 있도록 한다. As a result, the lean burn system of the internal combustion engine, which is composed of a combination of a fuel supply control device and a spark generator, controls the amount of fuel sent to each cylinder of the engine extremely limited to realize the ultra-thin air-fuel ratio, thereby increasing the capacity of the spark. This allows the mixer with the air conditioner to explode and ignite completely, and allow exhaust gas to be reduced perfectly.

Fuel supply device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Fuel reserving device

According to the present invention, there is provided a fuel reserving device for reserving fuel therein. The device comprises a fuel tank for reserving fuel therein, and a fuel vapor tank for reserving fuel vapor therein. The fuel vapor is fed from said fuel tank to said fuel vapor tank and returned from said fuel vapor tank to said fuel tank. The fuel vapor is not returned from said fuel vapor tank to said fuel tank when a pressure in said fuel tank would be higher than a predetermined pressure if the fuel vapor was returned from said fuel vapor tank to said fuel tank.

Control method of fuel supply system

本发明涉及车辆技术领域，具体公开了一种燃油供给系统的控制方法，该燃油供给系统的控制方法在确定环境温度小于设定温度后，开启第一吸油泵，并关闭第一控制阀，第一吸油泵以第一泵送流量工作，间隔第一设定时间后检测第一吸油泵的大循环电流；若大循环电流大于设定大循环电流且持续设定大循环时长，此时燃油温度可供给发动机正常起动，无需加热，可进行第一起动准备，能够有效降低发动机起动耗时，若大循环电流小于设定大循环电流，则重新判断车辆的第一起动状态并累计判断车辆的第一起动状态的总次数，若累计判断车辆的第一起动状态的总次数超过第一设定大循环次数，说明第一吸油泵出现故障，则关闭第一吸油泵。

Method and system for controlling fuel pump of lpi car

본 발명은, 연료 펌프의 구동을 정밀하게 제어할 수 있도록 한 LPI 차량의 연료 펌프 제어 시스템 및 방법이 개시되어 있다. 이러한 본 발명은 이그니션 키를 온 후 ECU로부터 제공되는 정보를 수집하여 상기 연료 펌프의 토출 연료량 목표치를 연산하는 토출 연료량 목표치 연산부; 상기 연료 펌프의 토출 연료량 목표치에 따른 연료 펌프의 회전 속도 목표치를 연산하는 연료 펌프 회전 속도 목표치 연산부; 실제 연료 펌프의 회전 속도를 측정하는 연료 펌프의 회전 속도 측정치를 출력하는 회전 속도 측정부; 상기 연료 펌프의 회전 속도 목표치와 회전 속도 측정치의 차를 연산한 후 상기 목표치와 측정치의 차에 대한 PID 제어를 통해 보정 게인을 연산하는 보정 게인 연산부; 상기 보정 게인 연산부에서 얻어진 보정 게인에 대한 학습값을 연산하는 학습치 연산부; 상기 학습치 연산부의 학습값을 근거로 에러 진단을 실행하는 에러 진단부; 상기 에러 진단부의 에러 진단 결과에 따라 림프홈 로직 결과값 또는 학습값을 근거로 연료 펌프의 구동 신호를 발생한 후 상기 연료 펌프로 제공하는 구동 신호 발생부를 포함한다. The present invention discloses a fuel pump control system and method for an LPI vehicle that enables precise control of the drive of a fuel pump. The present invention comprises a discharge fuel amount target value calculating unit for calculating the discharge fuel amount target value of the fuel pump by collecting information provided from the ECU after turning on the ignition key; A fuel pump rotational speed target value calculating unit configured to calculate a rotational speed target value of the fuel pump according to the discharged fuel amount target value of the fuel pump; A rotational speed measuring unit outputting a rotational speed measurement value of the fuel pump, which measures the actual rotational speed of the fuel pump; A correction gain calculator configured to calculate a difference between the target speed and the measured speed of the fuel pump, and then calculate a correction gain through PID control of the difference between the target value and the measured value; A learning value calculator for calculating a learning value for the correction gain obtained by the correction gain calculator; An error diagnosis unit configured to perform error diagnosis based on a learning value of the learning value calculating unit; And a driving signal generator configured to generate a driving signal of the fuel pump based on a limp home logic result value or a learning value according to an error ...

Vehicle multiple-tank fuel system

A vehicle fuel utilization system for a truck having multiple tanks, an above-tank crossover line coupling the two tanks, a draw line coupled only to a primary tank, and a return line coupled to the crossover line or to either of the tanks separately.

Common rail fuel injection system

Gauging apparatus for fuel consumption

내용 없음. No content.

Modulator for fuel injection amount

본 고안은 차량의 연료 분사 장치에 관한 것으로서, 종래에는 엠피아이(MPI)엔진의 경우와 하스킹(HASKING)타입의 ECU의 경우, 필드 문제 발생시 연결되는 기본 연료 분사량의 증감을 제어할 수 있는 수단이 없는 관계로 차량의연료를 낭비하는 문제점이 있었다. The present invention relates to a fuel injector of a vehicle. In the related art, in the case of an MPI engine and a HASKING type ECU, a means for controlling the increase or decrease of the basic fuel injection amount connected when a field problem occurs is provided. There was a problem of wasting the fuel of the vehicle because there is no. 따라서, 본 고안은 상기와 같은 문제점을 해결하기 위해 차량의 연료 분사량의 기준이 되는 냉각 수온 센서에 외부 저항을 연결시키므로서, 냉각 수온 센서의 신호를 변조시켜 기본 연료 분사량을 조절시켜 차량의 엔진에서 낭비되는 연료를 최소화하여 실용성 있는 연비의 효과를 얻고자 하는 연료 분사량 변조 장치이다. Therefore, in order to solve the above problems, the present invention connects an external resistance to the cooling water temperature sensor which is a reference of the fuel injection amount of the vehicle, and modulates the signal of the cooling water temperature sensor to adjust the basic fuel injection amount in the engine of the vehicle. It is a fuel injection amount modulator that minimizes wasted fuel to obtain a practical fuel economy.

Fuel pressure controlling apparatus for fuel injection engine

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Accumulator and automobile fuel distribution circuit.

L'invention concerne un accumulateur destiné à un circuit de distribution de carburant d'automobile. Elle se rapporte à un accumulateur qui comprend un boîtier (50, 52), un diaphragme flexible (54) délimitant une première et une seconde chambre (56, 58), et un ressort (74) qui résiste à l'augmentation de volume de la seconde chambre (58). Le boîtier (50, 52) a un orifice de référence de collecteur placé d'un premier côté du diaphragme (54) et un passage de carburant destiné à faire communiquer constamment la première chambre (56) avec le circuit de distribution de carburant afin que toute augmentation de volume du carburant dans le circuit soit compensée par dilatation de la première chambre (56) malgré la force antagoniste d'un ressort (74). Application aux circuits de carburant des automobiles The invention relates to an accumulator for an automobile fuel distribution system. It relates to an accumulator which comprises a housing (50, 52), a flexible diaphragm (54) defining a first and a second chamber (56, 58), and a spring (74) which resists the increase in volume of. the second chamber (58). The housing (50, 52) has a manifold reference port located on a first side of the diaphragm (54) and a fuel passage for constantly communicating the first chamber (56) with the fuel delivery circuit so that any increase in the volume of fuel in the circuit is compensated for by expansion of the first chamber (56) despite the opposing force of a spring (74). Application to automotive fuel systems

IC engine fuel supply system - valve unit is interposed between fuel pump and carburettor

MANIFOLD FOR FUEL CIRCUIT WITHOUT RETURN OF AUTOMOTIVE ENGINE.

Device for drawing a liquid contained in a tank having several compartments and tank fitted with such a device

The subject of the invention is a device for drawing liquid contained in a tank (1) having several compartments (C1, C2, C3) such as a motor vehicle fuel tank. A pipe (7) passes along the bottom part of each compartment and ends in the pump (2) located in the main compartment (C1). A valve (8) is provided on the pipe (7) at the bottom of each compartment. Each valve is made up of a float (10), held by a cage, which is raised when there is liquid in the compartment and is lowered, thereby shutting off the passage, when there is no longer any liquid in the relevant compartment. Application to the motor vehicle (automotive) industry.

Automotive fuel supply system with otto-cycle engine

FUEL SYSTEM FOR INTERNAL COMBUSTION ENGINE

L'invention concerne les circuits de carburant. Elle se rapporte à un circuit de carburant qui comporte un corps 19 délimitant un passage 22 entre une entrée 23 reliée à un filtre 15 et une sortie 21 reliée à un ensemble 10 de pompage. Selon l'invention, une chambre formant réservoir 18 est remplie par le carburant du courant principal à partir d'un orifice 25 et transmet ce même carburant au passage 22, à sa partie inférieure, en quantité très limitée. De cette manière, en cas de panne de carburant, le carburant de la chambre 18 réamorce les pompes. Application aux circuits de carburant des moteurs à combustion interne. (CF DESSIN DANS BOPI) The invention relates to fuel circuits. It relates to a fuel circuit which comprises a body 19 delimiting a passage 22 between an inlet 23 connected to a filter 15 and an outlet 21 connected to a pumping assembly 10. According to the invention, a chamber forming a reservoir 18 is filled with the fuel from the main stream from an orifice 25 and transmits this same fuel to the passage 22, at its lower part, in a very limited quantity. In this way, in the event of fuel running out, the fuel in chamber 18 will re-prime the pumps. Application to the fuel circuits of internal combustion engines. (CF DRAWING IN BOPI)

Fuel e.g. diesel, quantity estimating system for motor vehicle, has estimation units estimating fuel volume in reservoir using flow values of fuels respectively injected in engine and aspirated from reservoir and temperature measurements

The system has a fuel temperature sensor (32) located at a point of a fuel supply circuit (6) or in a reservoir (7). Determination units determine flow of fuel injected in an internal combustion engine and flow of fuel aspirated from the reservoir. An electronic control unit (12) has estimation units for estimating mass or volume of the fuel presented in the reservoir through thermal balances on the fuel presented in the reservoir and on the fuel transiting in the circuit. The mass or volume is estimated by using values of the flows and successive temperature measurements by the sensor. An independent claim is also included for a method for estimating quantity of fuel contained in a reservoir of a motor vehicle.

Patent FR2285526B1

Motor vehicle fuel tank has roll over vent valves linked by conduits ending in outlet duct of fill limit vent valve

The fuel tank (10) has roll over vent valves (40) situated close to its corners and linked by internal conduits (60), and a fill limit vent valve (50) mounted on the base (22) of a drawing and gauge assembly (32). The conduits connecting the roll over vent valves to the outside air, which are made from the same material as the tank and e.g. molded on its inner surface, end in the outlet duct of the fill limit vent valve.

IC engine fuel economiser - has needle valve to modulate return flow through housing attached to cylinder assembly with atomiser

FUEL SUPPLY DEVICE FOR INJECTION ENGINE

DEVICE FOR MEASURING THE FUEL LEVEL IN A MOTOR VEHICLE TANK.

FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINES