Internal-combustion engines – Combustion chamber means combined with air-fuel mixture... – Having a single combustible mixture inlet combined with...
Reexamination Certificate
2006-05-16
2006-05-16
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
Having a single combustible mixture inlet combined with...
C123S299000
Reexamination Certificate
active
07044108
ABSTRACT:
An internal combustion engine includes an in-cylinder injection valve and an intake port injection valve. An ECU controls the fuel injection valves in a fuel injection mode that corresponds to an operational state of the engine. When deterioration of the combustion state is detected while the engine operational state is in a predetermined operational region where fuel is injected at least from the in-cylinder injection valve, the ECU switches the fuel injection mode such that the ratio of the amount of fuel injected from the in-cylinder injection valve to the entire amount of fuel supplied to the cylinder is decreased. As a result, the engine combustion state is prevented from deteriorating while suppressing noise generated in the fuel pressurizing and supplying system.
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Gimie Mahmoud
Kenyon & Kenyon LLP
Toyota Jidosha & Kabushiki Kaisha
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