Method for detecting and regulating the start of combustion...

Details Method for detecting and regulating the start of combustion... Method for detecting and regulating the start of combustion...

2005-01-11

2005-01-11

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S406220, C701S102000

Reexamination Certificate

active

06840218

ABSTRACT:
The invention relates to a method for detecting the start of combustion in the combustion chamber of an engine with autoignition. In the method, the profile of the cylinder pressure is measured and the signal which is obtained in this way is transformed using wavelet functions. A sudden rise in the absolute value of the wavelet coefficients which are obtained indicates the start of combustion. The simple and at the same time precise detection of the start of combustion which is possible in this way can be used within the framework of a feedback regulation—by changing engine operating parameters such as, for example, the start of injection of the fuel—to regulate the start of combustion in a desired way.

REFERENCES:
patent: 4463729 (1984-08-01), Wiegand et al.
patent: 4760830 (1988-08-01), Wiegand et al.
patent: 4919099 (1990-04-01), Extance et al.
patent: 5359883 (1994-11-01), Baldwin et al.
patent: 5765532 (1998-06-01), Loye
patent: 6598468 (2003-07-01), Zur Loye et al.
patent: 6659068 (2003-12-01), Urushihara et al.
patent: 0071557 (1989-05-01), None
patent: 1132605 (2001-09-01), None
patent: 299562 (1998-11-01), None
patent: WO 9942718 (1999-08-01), None
Reddy, Krishna, Mallan, Ganesan, Evaluation of Combustion Parameters in Direct Injection Diesel Engines—An Easy and Reliable Method, SAE Technical Paper Series No. 930605, Mar. 1, 1993.

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