IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0147075
(2002-05-17)
|
우선권정보 |
DE-0025944 (2001-05-29) |
발명자
/ 주소 |
- Frank, Kurt
- Boecking, Friedrich
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
A fuel injection system for internal combustion engines, in particular Diesel engines, having a fuel reservoir which is supplied from a high-pressure pump and supplies fuel to a number of injectors corresponding to the number of cylinders of the engine, and has a pressure limiting valve, which is co
A fuel injection system for internal combustion engines, in particular Diesel engines, having a fuel reservoir which is supplied from a high-pressure pump and supplies fuel to a number of injectors corresponding to the number of cylinders of the engine, and has a pressure limiting valve, which is connected sealingly to the fuel reservoir, the pressure limiting valve having a valve housing, a high-pressure region, a low-pressure region, a valve seat oriented toward the inlet, an axially displaceable valve body, and a valve spring urging the valve body in the direction of the valve seat. The pressure limiting valve is integrated--at least partially--with the fuel reservoir, in such a way that at least the valve seat and the valve body are spatially associated with the fuel reservoir, and the seal sealing off the pressure limiting valve from the fuel reservoir is associated with the low-pressure region of the pressure limiting valve.
대표청구항
▼
A fuel injection system for internal combustion engines, in particular Diesel engines, having a fuel reservoir which is supplied from a high-pressure pump and supplies fuel to a number of injectors corresponding to the number of cylinders of the engine, and has a pressure limiting valve, which is co
A fuel injection system for internal combustion engines, in particular Diesel engines, having a fuel reservoir which is supplied from a high-pressure pump and supplies fuel to a number of injectors corresponding to the number of cylinders of the engine, and has a pressure limiting valve, which is connected sealingly to the fuel reservoir, the pressure limiting valve having a valve housing, a high-pressure region, a low-pressure region, a valve seat oriented toward the inlet, an axially displaceable valve body, and a valve spring urging the valve body in the direction of the valve seat. The pressure limiting valve is integrated--at least partially--with the fuel reservoir, in such a way that at least the valve seat and the valve body are spatially associated with the fuel reservoir, and the seal sealing off the pressure limiting valve from the fuel reservoir is associated with the low-pressure region of the pressure limiting valve. 1. A method for characterizing an air mass flow rate target in an internal combustion engine, comprising the steps of: determining a reference air mass flow rate term; determining an engine rotational speed term; determining a compressibility term as a function of said engine rotational speed term; and processing said reference air mass flow rate term and said compressibility term to determine the air mass flow rate target. 2. The method of claim 1, wherein the step of determining the reference air mass flow rate term includes the step of summing a throttle sonic air flow term and an air bypass sonic air flow term. 3. The method of claim 2, wherein said throttle sonic air flow term is a function of throttle position and said air bypass sonic air flow term is a function of air bypass valve position. 4. The method of claim 1, wherein the step of processing said reference air mass flow rate term and said predicted compressibility term includes the step of multiplying said reference air mass flow rate term and said predicted compressibility term to determine the air mass flow rate target. 5. A method for characterizing an air mass flow rate target in an internal combustion engine, comprising the steps of: determining a reference air mass flow rate term; determining an engine rotational speed term; comparing said engine rotational speed term and said reference air mass flow rate term to a previously defined surface look-up table to obtain a predicted pressure ratio; determining a compressibility term as a function of said predicted pressure ratio; and processing said reference air mass flow rate term and said compressibility term to determine the air mass flow rate target. 6. A control system for controlling the air flow into an engine having an intake manifold, a throttle, an air bypass valve, a turbocharger and a wastegate, said control system comprising: an engine speed sensor for sensing engine speed and generating an engine speed signal in response thereto; a throttle position sensor for sensing throttle position and generating a throttle position signal in response thereto; an air bypass valve sensor for sensing air bypass valve position and providing data indicative of said air bypass valve position; and a controller that receives and processes the engine speed signal, the throttle position signal, and the air bypass valve position data and determines a reference air mass flow rate term, an engine rotational speed term, and a compressibility term as a function of said engine rotational speed term; wherein said controller determines an air mass flow rate target from a product of said reference air mass flow rate term and said compressibility term. 7. A method of characterizing an air mass flow rate target in an internal combustion engine, comprising: determining an engine rotational speed term; determining an air bypass valve position term; and determining a throttle position term; wherein said engine rotational speed term, said air bypass valve position term and said throttle position term are employed to determine a reference air mass flow rate term and a predicted compressibility term which are multiplied to determine the air mass flow rate target. 8. A method for controlling the air flow into an engine having an intake manifold, a throttle, an air bypass valve, a turbocharger and a wastegate, said method comprising: determining a throttle position; determining a throttle position sonic air flow term based on said throttle position; determining an air bypass valve position; determining an air bypass valve sonic air flow term based on said air bypass valve position; determining a reference air mass flow rate term based on said throttle position sonic air flow term and said air bypass valve sonic air flow term; determining an engine rotational speed; determining a predicted pressure ratio of an intake manifold pressure to a throttle inlet pressure based on said engine rotational spe
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