[특허]Fuel system and pump suitable for use therein

Delphi Technologies, Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Fuel system and pump suitable for use therein

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-037/04
미국특허분류(USC)	123/446; 123/506
출원번호	US-0309926 (1999-05-11)
우선권정보	GB-19980010327 (1998-05-15)
발명자 / 주소	Knight, Andrew Roger Frankl, George Timms, Colin Thomas
출원인 / 주소	Delphi Technologies, Inc.
대리인 / 주소	Michael Best & Friedrich LLP
인용정보	피인용 횟수 : 2 인용 특허 : 16

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A fuel system comprises a fuel pump arranged to deliver fuel to a single fuel injector. The fuel pump and injector are physically spaced apart from one another, a high pressure fuel line being used to convey fuel between the fuel pump and the injector. The fuel pump is controllable to control the timing of commencement of fuel pressurization. The injector is controllable to control the timing of fuel delivery. A controller is arranged to control the operation of the fuel pump and the injector. The invention further relates to a fuel pump suitable for use in such a fuel system. providing a signal indicating a temperature of an exhaust gas stream discharged from the engine; and an electronic control unit operably connected to the engine and said temperature measuring device, said electronic control unit determining the mass ratio based on said signal from said temperature measuring device. 13. The system of claim 12, wherein said exhaust comprises an exhaust manifold and an exhaust duct coupled downstream of said exhaust manifold and said temperature measuring device is disposed in said exhaust duct. 14. The system of claim 12, wherein the engine has at least one cylinder, said exhaust comprises an exhaust duct and an exhaust manifold which further comprises an exhaust runner for each of said cylinders, said temperature measuring device is disposed in each of said exhaust runners, said signals from each of said temperature measuring devices indicates the mass ratio of its corresponding cylinder. 15. The system of claim 14, wherein said electronic control unit adjusts an amount of fuel delivered to a particular cylinder based on the mass ratio indicated in said particular cylinder. 16. The system of claim 12, wherein said temperature sensor is one of a thermocouple, a thermopile, a thermistor, and an optical temperature measuring device. 17. The system of claim 12, further comprising: an intake coupled to the engine, a hydrogen supply duct coupled to said intake; and a hydrogen valve disposed in said hydrogen supply duct operably connected to said electronic control unit, wherein apposition of said hydrogen valve is feedback controlled to provide a desired torque from the engine. 18. The system of claim 17, further comprising a throttle valve disposed in said intake operably connected to said electronic control unit wherein a position of said throttle valve is feedback controlled to provide a desired mass ratio in said exhaust gas stream. 19. The system of claim 12, further comprising: an intake coupled to the engine; and a throttle valve disposed in said intake operably connected to said electronic control unit, wherein a position of said throttle valve is feedback controlled to provide a desired torque from the engine. 20. The system of claim 19, further comprising: a hydrogen supply duct coupled to said intake; and a hydrogen valve disposed in said hydrogen supply duct operably connected to said electronic control unit, wherein a position of said hydrogen valve is feedback controlled to provide a desired mass ratio in said exhaust gas stream. 21. The system of claim 20, wherein said desired mass ratio is between a minimum mass ratio of about 0.2 of said stoichiometric mass ratio and a maximum mass ratio of about 0.8 of said stoichiometric mass ratio. 22. A system for determining a first mass ratio of hydrogen fuel to air when the first mass ratio is less than a stoichiometric mass ratio, the hydrogen fuel and air being combusted in an internal combustion engine, comprising: at least one temperature measuring device disposed in an exhaust coupled to the engine, said device providing a signal indicating a temperature of an exhaust gas stream discharged from the engine; and an electronic control unit operably connected to the engine and said temperature measuring device, said electronic control unit determining the first mass ratio based on said signal from said temperature measuring device independent of engine operating torque or speed. 23. The system of claim 22, wherein said exhaust comprises an exhaust manifold and an exhaust duct coupled downstream of said exhaust manifold and said temperature measuring device is disposed in said exhaust duct. 24. The system of claim 22, wherein the engine has at least one cylinder, said exhaust comprises an exhaust duct and an exhaust manifold which further comprises an exhaust runner for each of said cylinders, said temperature measuring device is disposed in each of said exhaust runners, said signals from each of said temperature m easuring devices indicates the first mass ratio of its corresponding cylinder. 25. The system of claim 24, wherein said electronic control unit adjusts an amount of fuel delivered to a particular cylinder based on the first mass ratio indicated in said particular cylinder. 26. The system of claim 22, wherein said temperature sensor is one of a thermocouple, a thermopile, a thermistor, and an optical temperature measuring device. 27. The system of claim 22, further comprising: an intake coupled to the engine, a hydrogen supply duct coupled to said intake; and a hydrogen valve disposed in said hydrogen supply duct operably connected to said electronic control unit, wherein a position of said hydrogen valve is feedback controlled to provide a desired torque from the engine. 28. The system of claim 27, further comprising a throttle valve disposed in said intake operably connected to said electronic control unit wherein a position of said throttle valve is feedback controlled to provide a desired mass ratio in said exhaust gas stream. 29. The system of claim 22, further comprising: an intake coupled to the engine; and a throttle valve disposed in said intake operably connected to said electronic control unit, wherein a position of said throttle valve is feedback controlled to provide a desired torque from the engine. 30. The system of claim 29, further comprising: a hydrogen supply duct coupled to said intake; and a hydrogen valve disposed in said hydrogen supply duct operably connected to said electronic control unit, wherein a position of said hydrogen valve is feedback controlled to provide a desired mass ratio in said exhaust gas stream. 31. The system of claim 30, wherein said desired mass ratio is between a minimum mass ratio of about 0.2 of said stoichiometric mass ratio and a maximum mass ratio of about 0.8 of said stoichiometric mass ratio. 32. The system of claim 22, further comprising a universal exhaust gas oxygen sensor disposed in said engine exhaust and coupled to said electronic control unit wherein a second mass ratio is determined based on a signal from said universal exhaust gas oxygen sensor. 33. The system of claim 32, wherein said electronic control unit compares said first and second mass ratios and determines whether a fault condition has occurred in one of said universal exhaust gas oxygen sensor and said temperature sensor based on said comparison. 34. The system of claim 32, wherein said electronic control unit compares said first and second mass ratios and updates a calibration constant within said electronic control based on said comparison. ntified, until the temperature of the intake passage has risen to at or above the predetermined value; a negative pressure detector which detects the intake negative pressure, and wherein said intake pressure control unit suppresses control in a direction to increase the intake air flow rate, by altering the control characteristic of said feedback control unit in accordance with a value detected by said negative pressure detector, when low engine temperature is identified after engine start-up, until the temperature of the intake passage has risen to at or above a predetermined value such that when the intake negative pressure detected by the negative pressure detector is small, said intake pressure control unit suppresses control in a direction to increase the intake air flow rate, by setting the feedback control gain of said feedback control unit in a region of increasing intake air flow rate, to a value smaller than that when the intake negative pressure is large.

이 특허에 인용된 특허 (16)

이 특허를 인용한 특허 피인용횟수: 2

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Fuel system and pump suitable for use therein

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이 특허에 인용된 특허 (16)

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Fuel system and pump suitable for use therein

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이 특허에 인용된 특허 (16)

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