Direct fuel injection/spark ignition engine control device

Details Direct fuel injection/spark ignition engine control device Direct fuel injection/spark ignition engine control device

2006-09-12

2006-09-12

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

C123S445000

Reexamination Certificate

active

07104249

ABSTRACT:
A control apparatus is configured to achieve considerably delayed ignition timing and combustion stability, and to bring about an increase in exhaust gas temperature and a reduction in HC discharge when the engine is cold. Normal stratified combustion operation and homogeneous combustion operation are carried out when warming has been completed and the coolant temperature of the internal combustion engine has exceeded 80° C. In an injection operation at the top dead center, the injection start timing ITS occurs prior to compression top dead center (TDC) and the injection end timing ITE occurs after compression top dead center (TDC), whereby fuel injection is carried out so as to straddle the compression top dead center. The ignition timing ADV occurs after compression top dead center (TDC) and ignition occurs with a timing that is delayed from the injection start timing ITS.

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