Control system for internal combustion engine

Details Control system for internal combustion engine Control system for internal combustion engine

2007-04-10

2007-04-10

Huynh, Hai (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

C123S406300, C123S406450, C123S568110, C123S381000

Reexamination Certificate

active

11483648

ABSTRACT:
A control system used with an engine determines a fuel injection timing according to a detected engine operating condition and fuel injection is executed through a fuel injection valve. The target ignition timings of the fuel are set according to the detected engine operating condition and stored in a memory. An ignition delay of the actual ignition timing relative to the target ignition timing and a cetane number of the fuel are calculated. Control values of the recirculation amount of exhaust gases are set according to the detected engine operating condition and stored in the memory. The stored control value is retrieved and the recirculation amount of exhaust gases is controlled using the retrieved control value. A correction amount of the recirculation amount of exhaust gases is calculated according to the estimated cetane number and the recirculation amount of exhaust gases is controlled using the corrected control value.

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patent: 6941929 (2005-09-01), Shinzawa
patent: 2004/0177830 (2004-09-01), Yamaoka et al.
patent: 0 905 361 (1999-03-01), None
patent: 1 445 456 (2004-08-01), None
patent: 2004-100566 (2004-04-01), None

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