Invention Grant
US07669456B2 Method and device for determining the rest time and/or for drift compensation in a combustion chamber pressure sensor
失效
用于确定燃烧室压力传感器中的休息时间和/或漂移补偿的方法和装置
- Patent Title: Method and device for determining the rest time and/or for drift compensation in a combustion chamber pressure sensor
- Patent Title (中): 用于确定燃烧室压力传感器中的休息时间和/或漂移补偿的方法和装置
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Application No.: US11673162Application Date: 2007-02-09
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Publication No.: US07669456B2Publication Date: 2010-03-02
- Inventor: Matthias Klenk , Thomas Walker
- Applicant: Matthias Klenk , Thomas Walker
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agent Michael J. Striker
- Priority: DE102006006888 20060215
- Main IPC: G01L27/00
- IPC: G01L27/00

Abstract:
In a method for determining the reset time in a pressure sensor that detects the pressure in a combustion chamber of an internal combustion engine and emits a corresponding pressure signal, with the pressure curve in the combustion chamber having at least one high-pressure region the reset time is determined as a function of at least one pressure value detected in the high-pressure phase, so that it is possible, within the sensor, to determine a favorable time at which to reset the drift, based on the pressure range. In the method, information about the auxiliary rotation speed is determined based on the pressure curve of the compression phase and is then used to generate the reset time, the method entails only slight circuitry-related expense and can therefore be implemented even in an ASIC without complex signal processing, and the method functions in almost all known engine operating states.
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