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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Применить Всего найдено 14. Отображено 13.
23-08-2016 дата публикации

Method for determining a fluid level in an internal combustion engine fluid tank

Номер: US0009423288B2
Автор: Igor Zanetti, Giovanni David, ZANETTI IGOR, DAVID GIOVANNI, Zanetti Igor, David Giovanni
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC, ZANETTI IGOR, DAVID GIOVANNI, GM GLOBAL TECH OPERATIONS LLC, Zanetti Igor, David Giovanni

A method for determining a fluid level value in a fluid tank of an internal combustion engine equipped with a discrete level sensor is provided. The discrete level sensor is configured for generating a first electrical signal when a fluid level is above or equal to a first predetermined fluid level threshold value and generating a second electrical signal when the fluid level is above or equal to a second predetermined fluid level threshold value. The second predetermined fluid level threshold value is greater than the first predetermined fluid level threshold value. The method includes monitoring a number of occurrences of the first electrical signal and of the second electrical signal over a time interval. The fluid level in the fluid tank is calculated as a function of the number of occurrences of the first and of the second electrical signals over the time interval.

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Номер записи: 1
03-01-2013 дата публикации

METHOD FOR DETERMINING A FLUID LEVEL IN AN INTERNAL COMBUSTION ENGINE FLUID TANK

Номер: US20130006548A1
Автор: DAVID Giovanni, Zanetti Igor
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for determining a fluid level value in a fluid tank of an internal combustion engine equipped with a discrete level sensor is provided. The discrete level sensor is configured for generating a first electrical signal when a fluid level is above or equal to a first predetermined fluid level threshold value and generating a second electrical signal when the fluid level is above or equal to a second predetermined fluid level threshold value. The second predetermined fluid level threshold value is greater than the first predetermined fluid level threshold value. The method includes monitoring a number of occurrences of the first electrical signal and of the second electrical signal over a time interval. The fluid level in the fluid tank is calculated as a function of the number of occurrences of the first and of the second electrical signals over the time interval. 1. A method for determining a fluid level value in a fluid tank of an internal combustion engine equipped with a discrete level sensor ,wherein the discrete level sensor is configured for:generating a first electrical signal when a fluid level is above or equal to a first predetermined fluid level threshold value,generating a second electrical signal when the fluid level is above or equal to a second predetermined fluid level threshold value, the second predetermined fluid level threshold value being greater than the first predetermined fluid level threshold value,and wherein the method comprises the steps of:monitoring a number of occurrences of the first electrical signal and of the second electrical signal over a time interval; andcalculating the fluid level in the fluid tank as a function of the number of occurrences of the first electrical signal and of the number of occurrences of the second electrical signal over the time interval.2. The method according to wherein the fluid level in the fluid tank is calculated as a weighted average of the first predetermined fluid level threshold value and ...

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Номер записи: 2
16-01-2014 дата публикации

KINETICS-BASED SCR CONTROL MODEL IMPROVEMENT

Номер: US20140013725A1
Автор: Jasinkiewicz Paul, Sun Min, Zanetti Igor
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for monitoring a discrete substrate element from an ammonia-selective catalyst reduction device configured to treat an exhaust gas feedstream of an internal combustion engine includes monitoring amounts of ammonia that are adsorbed, desorbed, and oxidized and an amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream from the discrete substrate element. An amount of ammonia consumption for the discrete substrate element is determined based on the amount of ammonia that is oxidized and the amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream. The amount of ammonia that is adsorbed and the amount of ammonia that is desorbed for the discrete substrate element are compared and the amount of ammonia consumption for the discrete substrate element is adjusted when the amount of ammonia that is adsorbed is less than the amount of ammonia that is desorbed. 1. Method for monitoring a discrete substrate element from an ammonia-selective catalyst reduction device configured to treat an exhaust gas feedstream of an internal combustion engine , comprising:monitoring an amount of ammonia that is adsorbed, an amount of ammonia that is desorbed, an amount of ammonia that is oxidized and an amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream for the discrete substrate element;determining an amount of ammonia consumption for the discrete substrate element based on the amount of ammonia that is oxidized and the amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream;comparing the amount of ammonia that is adsorbed and the amount of ammonia that is desorbed for the discrete substrate element; andadjusting the amount of ammonia consumption for the discrete substrate element when the amount of ammonia that is adsorbed is less than the amount of ammonia that is desorbed.2. The method of wherein the discrete substrate element comprises one of a plurality of discrete substrate ...

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Номер записи: 3
15-01-2015 дата публикации

METHOD OF DETERMINING THE THERMAL STATE OF A SUBSTANCE IN COLD CONDITION

Номер: US20150016485A1
Автор: DAVID Giovanni, Zanetti Igor
Принадлежит:

A method of determining a thermal state or a thermal state transition of a substance based on how much liquid phase is available is disclosed. The method includes: (a) determining a current thermal state of the substance when the internal combustion engine is switched on based on a tank temperature and on a time interval during which the engine is switched off; and (b) calculating a percentage of the liquid phase in case the thermal state is a mixture of solid phase and liquid phase based on a total mass of the substance in the tank, a heat amount supplied to the tank, a heat exchange of the tank with an external environment; and (c) detecting the thermal state transitions based on said tank temperature and its time derivative and on said percentage of the liquid phase. 114-. (canceled)15. A method for determining a thermal state or a thermal state transition of a substance contained in a tank of an after-treatment system of an internal combustion engine , the thermal state being a solid phase , a liquid phase or a mixture of solid phase and liquid phase , the method comprising:determining a current thermal state of the substance based on a tank temperature (T_tank) and a time interval during which the engine has been switched off (t_EngineOff) when an internal combustion engine is switched on;calculating a percentage of the liquid phase based on a total mass of the substance in the tank (Total_Fluid), a heat amount supplied to the tank and a heat exchange of the tank with an external environment when the thermal state of the substance is a mixture of solid phase and liquid phase; anddetecting a thermal state transition based on said tank temperature (T_tank), a time derivative of said tank temperature and said percentage of the liquid phase.16. The method according to claim 15 , wherein determining a current thermal state of the substance is based on a comparison of the tank temperature (T_tank) and a fusion temperature (T_fusion) claim 15 , wherein the current ...

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Номер записи: 4
29-01-2015 дата публикации

Control apparatus for detecting a variation of a fluid level in a tank

Номер: US20150032391A1
Автор: GIOVANNI David, Igor Zanetti
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A control apparatus for detecting a variation of a fluid level in a tank is disclosed. The control apparatus includes an Electronic Control Unit connected to the fluid level sensor. The ECU is configured to monitor a signal value representative of a fluid level in the tank; filter the fluid level signal value using a first filter to obtain a first filtered signal and using a second filter to obtain a second filtered signal, the first filter having a time constant (τ1) lower than a time constant (τ2) of the second filter; calculate an integral value of a difference between the first filtered signal and the second filtered signal; and generate a signal representative of the detection of an increase in the fluid level in the tank when the integral value is greater than a predefined threshold.

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Номер записи: 5
03-08-2011 дата публикации

Particle filter regeneration with a fault detection step

Номер: GB2477310A
Автор: Alessia TUNINETTI, Igor Zanetti, Stefano Cassani
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for managing the regeneration of a diesel particulate filter, DPF, in a diesel engine system, said engine having an intake and an exhaust line and being configured to after-inject or post-inject quantities of fuel into a combustion chamber for raising the temperature of the engine exhaust gas, where the method comprises identifying a faulty condition of the engine system and, in case that such faulty condition is not critical, measuring the intake air charge and, in case such intake air charge is acceptable, performing a regeneration process for said diesel particulate filter. Preferably the charge is measured by measuring the air intake flow rate and intake air pressure in order to determine if these parameters are inside an acceptable range, which is determined as a function of engine working point. The regeneration process may be performed at a lower temperature and for a longer duration.

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Номер записи: 6
10-06-2014 дата публикации

Method for the estimation of oil viscosity in an internal combustion engine

Номер: US8746046B2
Автор: Igor Zanetti, Stefano Cassani
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for the estimation of oil viscosity in an internal combustion engine, the engine subjected to fuel post injections to activate Particulate Filter regeneration processes and to fuel hydrocarbons (HC) evaporation events affecting said oil viscosity. The method includes, but is not limited to determining if the particulate filter is subjected to a regeneration process and, in the affirmative case, calculating an oil viscosity decrease during said Particulate Filter regeneration process as a function of an oil dilution rate, and calculating an oil viscosity increase after said regeneration process as a function of an Hydrocarbon (HC) evaporation rate and of a time during which fuel Hydrocarbon evaporation takes place, where said evaporation time is determined as a function of a time spent in evaporating fuel Hydrocarbon from engine oil in a previous fuel hydrocarbons evaporation event.

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Номер записи: 7
23-11-2011 дата публикации

A Method of Estimating the Oil Viscosity in an Internal Combustion Engine with Post Injection Fuel for Particulate Filter Regeneration

Номер: GB2480493A
Автор: Igor Zanetti, Stefano Cassani
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

The invention provides a method for the estimation of oil viscosity in an internal combustion engine 10, in which a fuel injector 30 post-injects fuel into a combustion chamber 50 for particulate filter 80 regeneration and for evaporation of fuel hydrocarbons which affect the oil viscosity. The method determining if the particulate filter is subjected to regeneration process, and when it is, calculating an oil viscosity due to viscosity decrease during the regeneration process [RGN] as a function of an oil dilution rate, and a viscosity increase after the regeneration process as a function of an hydrocarbon evaporation rate and time period; the time period determined by a previous fuel hydrocarbon evaporation event.

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Номер записи: 8
21-01-2015 дата публикации

Method of determining the thermal state of a substance in cold condition

Номер: GB2516245A
Автор: GIOVANNI David, Igor Zanetti
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method of determining a thermal state, or a thermal state transition, of a substance (e.g. a diesel exhaust fluid) in a tank of an aftertreatment system of an internal combustion engine. The thermal state can be 100% solid phase, 100% liquid phase, or a mixture of solid and liquid phases. The method comprising the following steps: When the internal combustion engine is switched on, determining a current thermal state of the substance based on a tank temperature and a time interval during which the engine was switched off; if the thermal state is a mixture of solid and liquid phase, calculating a percentage of the liquid phase based on a total mass of the substance in the tank, a heat amount supplied to the tank, and a heat exchange of the tank with an external environment; detecting the thermal state transitions based on the tank temperature and its time derivative, and on the percentage of the liquid phase.

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Номер записи: 9
23-02-2011 дата публикации

Method for estimating oxygen concentration downstream of a diesel oxidation catalyst

Номер: GB2472815A
Автор: Igor Zanetti, Simone Barbero, Stefano Cassani
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method is disclosed for estimating oxygen concentration downstream of a diesel oxidation catalyst (COC) 6 within a diesel engine system 1 having an intake manifold 3, a combustion chamber and an exhaust manifold 4, the diesel oxidation catalyst 6 being located in the exhaust line upstream of a diesel particulate filter (DPF) 7. The method comprises determining unburned fuel mass flow ejected from the combustion chamber, determining air mass fraction in the exhaust manifold 4, estimating air mass fraction downstream the diesel oxidation catalyst 6 as a function of the unburned fuel mass flow and the air mass fraction in the exhaust manifold 4, and estimating oxygen concentration downstream the diesel oxidation catalyst 6 as a function of the estimated air mass fraction downstream the diesel oxidation catalyst 6. The determination of unburned mass flow may be by determining the part of the after-injected fuel mass flow that is not combusted in the combustion chamber.

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Номер записи: 10
24-11-2011 дата публикации

Method for controlling injection of diesel exhaust fluid into an exhaust pipe of an internal combustion engine

Номер: US20110283678A1
Автор: Emiliano SANTILLO, Igor Zanetti
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method is provided for controlling injection of Diesel Exhaust Fluid into an exhaust pipe of an internal combustion engine equipped with a Selective Reduction Catalyst. The method includes, but is not limited to monitoring a value of a control parameter influencing an operation of the Selective Reduction Catalyst, injecting a quantity of Diesel Exhaust Fluid, controlling the quantity of Diesel Exhaust Fluid to be injected employing a closed loop procedure or an open loop procedure, switching between the closed loop procedure and the open loop procedure, when value of the control parameter crosses a first threshold value of the control parameter.

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Номер записи: 11
25-08-2022 дата публикации

Kinetikbasierte Verbesserung eines SCR-Steuerungsmodells

Номер: DE102013212441B4
Автор: Igor Zanetti, Min Sun, Paul Jasinkiewicz
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Verfahren zum Überwachen eines diskreten Substratelements (52(i)) von einer ammoniak-selektiven Katalysatorreduktionsvorrichtung (60), die ausgelegt ist, um einen Abgaszustrom (15) eines Verbrennungsmotors zu behandeln, umfassend: Überwachen einer Ammoniakmenge, die adsorbiert wird, einer Ammoniakmenge, die desorbiert wird, einer Ammoniakmenge, die oxidiert wird, und einer Ammoniakmenge, die beim Reduzieren von NOx in dem Abgaszustrom für das diskrete Substratelement (52(i)) verbraucht wird; und Ermitteln einer Ammoniakverbrauchsmenge für das diskrete Substratelement (52(i)) beruhend auf der Ammoniakmenge, die oxidiert wird, und der Ammoniakmenge, die beim Reduzieren von NOx in dem Abgaszustrom verbraucht wird; gekennzeichnet durch Vergleichen der Ammoniakmenge, die adsorbiert wird, und der Ammoniakmenge, die für das diskrete Substratelement (52(i)) desorbiert wird; und Anpassen der Ammoniakverbrauchsmenge für das diskrete Substratelement (52(i)), wenn die Ammoniakmenge, die adsorbiert wird, kleiner als die Ammoniakmenge ist, die desorbiert wird.

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Номер записи: 12
01-08-2017 дата публикации

Method of determining the thermal state of a substance in cold condition

Номер: US09719398B2
Автор: GIOVANNI David, Igor Zanetti
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method of determining a thermal state or a thermal state transition of a substance based on how much liquid phase is available is disclosed. The method includes: (a) determining a current thermal state of the substance when the internal combustion engine is switched on based on a tank temperature and on a time interval during which the engine is switched off; and (b) calculating a percentage of the liquid phase in case the thermal state is a mixture of solid phase and liquid phase based on a total mass of the substance in the tank, a heat amount supplied to the tank, a heat exchange of the tank with an external environment; and (c) detecting the thermal state transitions based on said tank temperature and its time derivative and on said percentage of the liquid phase.

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Номер записи: 13