Invention Grant
- Patent Title: Device and method for processing a signal of pressure measurement of an internal combustion engine combustion chamber
- Patent Title (中): 用于处理内燃机燃烧室的压力测量信号的装置和方法
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Application No.: US11994652Application Date: 2006-06-21
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Publication No.: US07660703B2Publication Date: 2010-02-09
- Inventor: Lionel Cordesses , Marco Marsilia
- Applicant: Lionel Cordesses , Marco Marsilia
- Applicant Address: FR Billancourt
- Assignee: Renault S.A.S.
- Current Assignee: Renault S.A.S.
- Current Assignee Address: FR Billancourt
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0507264 20050707
- International Application: PCT/FR2006/050616 WO 20060621
- International Announcement: WO2007/006988 WO 20070118
- Main IPC: G06F19/00
- IPC: G06F19/00
Abstract:
A device for processing a signal of pressure measurement of an internal combustion engine combustion chamber. The device obtains, by a low-pass filter of the pressure measuring signal, a filtered signal, subtracts the filtered signal from the pressure measuring signal to obtain a difference signal, compares the difference signal to a predetermined threshold value, and determines a combustion starting time as a time at which the difference signal reaches the predetermined threshold value.
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