Control device of in-cylinder direct-injection internal...

Details Control device of in-cylinder direct-injection internal... Control device of in-cylinder direct-injection internal...

2008-01-29

2008-01-29

Argenbright, T. M (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S179500, C123S179160, C123S305000

Reexamination Certificate

active

07322342

ABSTRACT:
A requested injection amount of fuel necessary during ignition cut-off at the time of start at an extremely low temperature is calculated (step ST2), injection start timing and injection end timing between which wetting of a spark plug by fuel is less likely are set (step ST3), and the number of times of ignition cut-off is calculated based on the injection start timing and the injection end timing and the requested injection amount (step ST4). The injection start timing and the injection end timing are thus restricted to timings between which plug wetting is less likely, and the number of times of ignition cut-off is calculated based on the injection start timing and the injection end timing and the requested injection amount, so that wetting of the spark plug by fuel at the extremely low temperature can be avoided even in an in-cylinder direct-injection engine.

REFERENCES:
patent: 2007/0023007 (2007-02-01), Maemura et al.
patent: 2007/0023012 (2007-02-01), Maemura et al.
patent: 10-9004 (1998-01-01), None
patent: 11-270387 (1999-10-01), None
patent: 2000-97071 (2000-04-01), None
patent: 2002-138883 (2002-05-01), None
patent: 2005-155434 (2005-06-01), None

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