Charge-injected internal combustion engine, and method of...

Details Charge-injected internal combustion engine, and method of... Charge-injected internal combustion engine, and method of...

2005-10-18

2005-10-18

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Auxiliary air or gas used to inject fuel

C123S478000

Reexamination Certificate

active

06955161

ABSTRACT:
A charge-injected internal combustion engine exhibits improved starting performance with charge-injection timing control. A charge-injected internal combustion engine has an air-fuel injection valve for directly injecting a compressed air-fuel mixture into a combustion chamber. The engine is also provided with an air pump, driven by the crankshaft for discharging compressed air, and a timing controller for setting injection timing of the air-fuel injection valve. When initial startup of the engine is detected, the controller sets the injection timing to the intake stroke. When the engine reaches a predetermined engine speed, or when the pressure of the injection air reaches a threshold pressure where injection of the air-fuel mixture is possible on the compression stroke, the timing controller switches the injection timing from the intake stroke to the compression stroke.

REFERENCES:
patent: 5054444 (1991-10-01), Morikawa
patent: 5148788 (1992-09-01), Saikalis et al.
patent: 2000-514150 (2000-10-01), None

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