Control unit for an internal combustion engine

Details Control unit for an internal combustion engine Control unit for an internal combustion engine

2007-04-23

2008-11-25

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

Reexamination Certificate

active

07455047

ABSTRACT:
An engine control unit includes pressure detector provided in a combustion chamber of the engine. A motoring pressure of the engine is estimated. A combustion starting time is detected when the difference between an internal pressure detected by the pressure detector and the pressure estimated by the ECU exceeds a predetermined value. When the internal pressure detected by the pressure detector reaches its peak after the combustion starting time has been detected, the crank angle at this time point is determined to correspond to the maximum internal cylinder pressure that is generated by combustion.

REFERENCES:
patent: 4466408 (1984-08-01), Cheklich
patent: 4556030 (1985-12-01), Aono
patent: 7000596 (2006-02-01), Zurloye et al.
patent: 2005/0229903 (2005-10-01), Kobayashi et al.
patent: 63-078036 (1988-04-01), None

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