Engine control system

Details Engine control system Engine control system

2006-12-12

2006-12-12

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S501000

Reexamination Certificate

active

07146964

ABSTRACT:
When a combustion mode of an engine is a diffuse combustion mode in which an initial rising inclination of a heat-release-rate is steep, an electronic control unit (ECU) calculates an ignition timing in which the heat-release-rate exceeds an ignition determining value. Thus, even if a cylinder pressure sensor has a gain deviation or an offset deviation, the ignition timing is accurately detected to control the injection start timing. When the combustion mode is a premix combustion mode in which the initial rising inclination of the heat-release-rate is moderate, a peak arising timing of the heat-release-rate is calculated. Thus, the peak arising timing is accurately detected to control the injection start timing.

REFERENCES:
patent: 6994077 (2006-02-01), Kobayashi et al.
patent: 2003/0196635 (2003-10-01), Kataoka et al.
patent: 2005/0090966 (2005-04-01), Strom et al.
patent: 2005/0188955 (2005-09-01), Koopmans
patent: 1 538 325 (2005-06-01), None
patent: 2000-240497 (2000-09-01), None
patent: 2004-100567 (2004-04-01), None

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