Method and apparatus for furnishing a filtered air system state variable in a control unit of an internal combustion engine
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01F-025/00
G01M-015/09
G01L-019/02
G01L-027/00
G01M-015/04
G01F-015/00
출원번호
US-0962564
(2015-12-08)
등록번호
US-10018532
(2018-07-10)
우선권정보
DE-10 2014 225 176 (2014-12-08)
발명자
/ 주소
Jadhav, Pandurang
Farr, Thomas
Kuhn, Daniel
출원인 / 주소
ROBERT BOSCH GMBH
대리인 / 주소
Norton Rose Fulbright US LLP
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
A method is provided for identifying an averaged sensor value of a state variable of an air system for an internal combustion engine in a motor vehicle, comprising the following steps: acquiring and temporarily storing sensor values at a predefined sampling interval during a segment duration of the
A method is provided for identifying an averaged sensor value of a state variable of an air system for an internal combustion engine in a motor vehicle, comprising the following steps: acquiring and temporarily storing sensor values at a predefined sampling interval during a segment duration of the state variable, the segment duration corresponding to one period of a pulsation of the state variable;determining an average of the sensor values acquired within the segment duration;correcting the average of the sensor values that has been determined, using a correction variable that depends on the time difference between the segment duration and a multiple of the sampling interval.
대표청구항▼
1. A method for identifying an averaged sensor value of a state variable of an air system for an internal combustion engine in a motor vehicle, the method comprising: acquiring and temporarily storing, via a processor, sensor values at a predefined sampling interval during at least one segment durat
1. A method for identifying an averaged sensor value of a state variable of an air system for an internal combustion engine in a motor vehicle, the method comprising: acquiring and temporarily storing, via a processor, sensor values at a predefined sampling interval during at least one segment duration of the state variable, the segment duration corresponding to one period of a pulsation of the state variable;determining, via the processor, an average of the sensor values acquired within the at least one segment duration;correcting, via the processor, the average of the sensor values that has been determined, using a correction variable that depends on a time difference between the at least one segment duration and a multiple of the sampling interval, so as to provide filtered sensor values; andproviding the filtered sensor values to an engine control unit to control the engine so as to provide a desired torque;wherein the state variable corresponds to one of a gas mass flow and a pressure in the air system of the internal combustion engine. 2. The method as recited in claim 1, further comprising: identifying the segment duration of a current segment as a function of a current rotation speed of the internal combustion engine. 3. The method as recited in claim 1, further comprising: identifying a correction value as a function of a measured value which is found immediately before a starting point in time that is obtained from an ending point in time, at which, after an end of the segment duration, a sensor value is to be acquired, minus the segment duration. 4. The method as recited in claim 3, wherein the correction value is identified as a function of a correction time duration that is obtained from a time difference between the segment duration and a time duration that is determined by a product of the sampling interval and a number of sensor values acquired between the starting point in time and the ending point in time. 5. The method as recited in claim 1, wherein the determining and the correcting are carried out when an end of the segment duration is reached, the segment duration being predefined by a predetermined crankshaft angle of a crankshaft of the internal combustion engine. 6. An apparatus for identifying an averaged sensor value of a state variable of an air system for an internal combustion engine in a motor vehicle, comprising: an acquiring device to acquire and temporarily store sensor values at a predefined sampling interval during at least one segment duration of the state variable, the segment duration corresponding to one period of a pulsation of the state variable;a determining device to determine an average of the sensor values acquired within the at least one segment duration; anda correcting device to correct the average of the sensor values that has been determined, using a correction variable that depends on a time difference between the at least one segment duration and a multiple of the sampling interval, so as to provide filtered sensor values;wherein the filtered sensor values are provided to an engine control unit to control the engine so as to provide a desired torque, andwherein the state variable corresponds to one of a gas mass flow and a pressure in the air system of the internal combustion engine. 7. The apparatus as recited in claim 6, wherein the apparatus includes an engine control unit. 8. A non-transitory computer readable medium having a computer program, which is executable by a processor, comprising: a program code arrangement having program code for identifying an averaged sensor value of a state variable of an air system for an internal combustion engine in a motor vehicle, by performing the following: acquiring and temporarily storing, via the processor, sensor values at a predefined sampling interval during at least one segment duration of the state variable, the segment duration corresponding to one period of a pulsation of the state variable;determining, via the processor, an average of the sensor values acquired within the at least one segment duration; andcorrecting, via the processor, the average of the sensor values that has been determined, using a correction variable that depends on a time difference between the at least one segment duration and a multiple of the sampling interval, so as to provide filtered sensor values; andproviding the filtered sensor values to an engine control unit to control the engine so as to provide a desired torque;wherein the state variable corresponds to one of a gas mass flow and a pressure in the air system of the internal combustion engine. 9. The computer readable medium of claim 8, further comprising: identifying the segment duration of a current segment as a function of a current rotation speed of the internal combustion engine.
Glidewell John M. (Dearborn MI) Chui Granger K. (Dearborn Heights MI) Yang Woong-Chul (Ann Arbor MI), On-board detection of pressure regulator malfunction.
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