Method for operating an internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-017/00
G01M-019/00
F02D-011/10
출원번호
US-0590856
(2005-11-21)
등록번호
US-7415345
(2008-08-19)
우선권정보
DE-10 2004 062 018(2004-12-23)
국제출원번호
PCT/EP05/056092
(2005-11-21)
§371/§102 date
20060825
(20060825)
국제공개번호
WO06/069853
(2006-07-06)
발명자
/ 주소
Wild,Ernst
출원인 / 주소
Robert Bosch GmbH
대리인 / 주소
Striker,Michael J.
인용정보
피인용 횟수 :
17인용 특허 :
6
초록▼
In operation of an internal combustion engine, an air filling (rl) in a combustion chamber is ascertained, taking into account a pressure (ps) in an intake conduit. It is proposed that the air filling (rl) be ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot
In operation of an internal combustion engine, an air filling (rl) in a combustion chamber is ascertained, taking into account a pressure (ps) in an intake conduit. It is proposed that the air filling (rl) be ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot) of a crankshaft and a ratio of the pressure (ps) in the intake conduit (22) to an ambient pressure (pu).
대표청구항▼
The invention claimed is: 1. A computer program, characterized in that it is programmed for use in a method for operating an internal combustion engine (10), in which an air filling (rl) in a combustion chamber (14) is ascertained, taking a pressure (ps) in an intake conduit (22) into account, char
The invention claimed is: 1. A computer program, characterized in that it is programmed for use in a method for operating an internal combustion engine (10), in which an air filling (rl) in a combustion chamber (14) is ascertained, taking a pressure (ps) in an intake conduit (22) into account, characterized in that the air filling (rl) is ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot) of a crankshaft (44) and a ratio of the pressure (ps) in the intake conduit (22) to an ambient pressure (pu), wherein the model (A), as its input variable, additionally receives a temperature (Tbr) of the air present in the combustion chamber (14), and wherein the temperature of the air present in the combustion chamber is ascertained on the basis of a model, which as its input variables receives a detected temperature of the air in the intake conduit and at least one further detected temperature of the engine, wherein said at least one further detected temperature is selected from the group consisting of a coolant temperature, an exhaust-gas temperature, a cylinder head temperature, or any combination of the coolant temperature, exhaust-gas temperature and cylinder head temperature. 2. An electrical memory for a control and/or regulating device (48) of an internal combustion engine (10), characterized in that a computer program for use in a method for operating an internal combustion engine is stored in it, wherein in said method for operating the internal combustion engine, an air filling (rl) in a combustion chamber (14) is ascertained, taking a pressure (ps) in an intake conduit (22) into account, characterized in that the air filling (rl) is ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot) of a crankshaft (44) and a ratio of the pressure (ps) in the intake conduit (22) to an ambient pressure (pu), wherein the model (A), as its input variable, additionally receives a temperature (Tbr) of the air present the combustion chamber (14), and wherein the temperature of the air present in the combustion chamber is ascertained on the basis of a model, which as its input variables receives a detected temperature of the air in the intake conduit and at least one further detected temperature of the engine, wherein said at least one further detected temperature is selected from the group consisting of a coolant temperature, an exhaust-gas temperature, a cylinder head temperature, or any combination of the coolant temperature, exhaust-gas temperature and cylinder head temperature. 3. A control and/or regulating device (48) for an internal combustion engine (10), characterized in that it is programmed for use in a method for operating an internal combustion engine (10), in which an air filling (rl) in a combustion chamber (14) is ascertained, taking a pressure (ps) in an intake conduit (22) into account, characterized in that the air filling (rl) is ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot) of a crankshaft (44) and a ratio of the pressure (ps) in the intake conduit (22) to an ambient pressure (pu), wherein the model (A), as its input variable, additionally receives a temperature (Tbr) of the air present in the combustion chamber (14), and wherein the temperature of the air present in the combustion chamber is ascertained on the basis of a model, which as its input variables receives a detected temperature of the air in the intake conduit and at least one further detected temperature of the engine, wherein said at least one further detected temperature is selected from the group consisting of a coolant temperature, an exhaust-gas temperature, a cylinder head temperature, or any combination of the coolant temperature, exhaust-gas temperature and cylinder head temperature. 4. A method for operating an internal combustion engine (10), in which an air filling (rl) in a combustion chamber (14) is ascertained, taking a pressure (ps) in an intake conduit (22) into account, characterized in that the air filling (rl) is ascertained on the basis of a model (A), which as its input variables receives an rpm (nmot) of a crankshaft (44) and a ratio of the pressure (ps) in the intake conduit (22) to an ambient pressure (pu), wherein the model (A), as its input variable, additionally receives a temperature (Tbr) of the air present in the combustion chamber (14), and wherein the temperature of the air present in the combustion chamber is ascertained on the basis of a model, which as its input variables receives a detected temperature of the air in the intake conduit and at least one further detected temperature of the engine, wherein said at least one further detected temperature is selected from the group consisting of a coolant temperature, an exhaust-gas temperature, a cylinder head temperature, or any combination of the coolant temperature, exhaust-gas temperature and cylinder head temperature. 5. The method as defined by claim 1, wherein at least one model (A, D) includes a characteristic curve and/or a performance graph (50, 80). 6. The method as defined by claim 1, wherein the ambient pressure (pu) is ascertained on the basis of a model (B), which as its input variables receives a difference (dp) between a detected pressure (ps) and a modeled pressure (psmod) in the intake conduit (22). 7. The method as defined by claim 6, wherein the ambient pressure (pu) is ascertained only if the throttle valve opening, or an equivalent variable (msdk), reaches and/or exceeds a limit value (S). 8. The method as defined by claim 6, wherein the modeled pressure (psmod) in the intake conduit (22) is ascertained on the basis of a model (C), which as its input variable receives a difference (drl) between an air flow rate (rldk), into the intake conduit (22), and an air flow rate (rlkdroh) out of the intake conduit (22) into the combustion chamber (14). 9. The method as defined by claim 8, wherein the air flow rate (rlkdroh) out of the intake conduit (22) into the combustion chamber (14) is ascertained on the basis of a model (D), which as its input variable receives a position (wdkba) of a throttle valve (24). 10. The method as defined by claim 9, wherein the model (D) additionally receives a correction variable (ofmsndk) of a throttle valve characteristic curve, which is ascertained from the difference (dp) between the modeled pressure (psmod) and the ascertained pressure (ps) in the intake conduit (22). 11. The method as defined by claim 10, wherein the correction variable (ofmsndk) is ascertained only if the throttle valve opening, or an equivalent variable (msdk), is less than a limit value (S) and/or reaches that limit value.
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이 특허에 인용된 특허 (6)
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Wagner, Alexandre; Bleile, Thomas; Lux, Slobodanka; Fleck, Christian, Method for real time capability simulation of an air system model of an internal combustion engine.
Beikmann, Randall S., System and method for controlling a firing sequence of an engine to reduce vibration when cylinders of the engine are deactivated.
Brennan, Daniel G.; Naik, Sanjeev M., System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration.
Phillips, Andrew W., System and method for randomly adjusting a firing frequency of an engine to reduce vibration when cylinders of the engine are deactivated.
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