Internal combustion engine system and internal combustion...

Details Internal combustion engine system and internal combustion... Internal combustion engine system and internal combustion...

2005-12-08

2009-08-18

Cuff, Michael (Department: 3741)

Internal-combustion engines

Starting device

Condition responsive control of starting device

C701S112000, C701S113000

Reexamination Certificate

active

07574989

ABSTRACT:
When a crank angle CAa of a specific cylinder, which was expected to stop in a fuel injection stop range over an intake stroke to a compression stroke at a full stop of an engine and received fuel injection, actually exceeds the fuel injection stop range and reaches a preset reference angle CA4, engine stop-state ignition control of the invention ignites the air-fuel mixture in the specific cylinder receiving the fuel injection at a moment of reaching the preset reference angle CA4(step S260) and simultaneously injects the fuel into a certain cylinder that is in the intake stroke at the moment of the ignition (step S270). When the crank angle CAa of the specific cylinder receiving the fuel injection does not reach the preset reference angle CA4but exceeds a preset reference angle CA3that is smaller than the preset reference angle CA4, the engine stop-state ignition control of the invention ignites the air-fuel mixture in the specific cylinder upon a preset wait time elapsed after the full stop of the engine (step S295). This arrangement of the invention effectively restrains direct discharge of the uncombusted fuel at a restart of the engine to prevent the poor emission, while ensuring quiet combustion to reduce the potential vibrations due to the explosive combustion.

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