Internal-combustion engines – Combustion chamber means having fuel injection only – Having a particular relationship between injection and...
Patent
1996-05-28
1997-10-14
Dolinar, Andrew M.
Internal-combustion engines
Combustion chamber means having fuel injection only
Having a particular relationship between injection and...
F02B 302, F02B 304
Patent
active
056761082
ABSTRACT:
A combustion control system and method of a four cycle direct injection engine includes an igniter for igniting simultaneously in two cylinders, a firing cylinder and an off-firing cylinder. In the combustion control system, it is judged whether or not the spark discharge period following the ignition timing overlaps with the fuel injection period following the fuel injection starting timing. If it is judged not to overlap, the fuel injection starting timing determined based on the engine speed and the fuel injection amount is let be a final fuel injection starting timing. If it is judged to overlap, the spark discharge ending timing is obtained from the ignition timing and the spark discharge period and this spark discharge ending timing is let be a final fuel injection starting timing. By delaying the fuel injection starting timing until the final fuel injection starting timing, it is possible to prevent the off-firing cylinder from being fired when the igniter ignites simultaneously in the firing and off-firing cylinders.
REFERENCES:
patent: 5333583 (1994-08-01), Matsuura
Dolinar Andrew M.
Fuji Jukogyo Kabushiki Kaisha
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