Direct fuel injection type internal combustion engine

Details Direct fuel injection type internal combustion engine Direct fuel injection type internal combustion engine

2005-12-20

2005-12-20

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

C123S298000, C123S299000, C123S305000, C239S533120

Reexamination Certificate

active

06976469

ABSTRACT:
A control unit is used for controlling a direct fuel injection type internal combustion engine. The control unit controls a fuel injection valve to have a first fuel injection mode wherein a penetration force of an injected fuel sharply increases at an initial stage of a fuel injection and thereafter an increasing rate of the penetration force gradually lowers with passage of time and a second fuel injection mode wherein the penetration force of the injected fuel sharply increases at a middle stage of the fuel injection. The control unit further controls the fuel injection valve in a manner to switch the first and second fuel injection modes in accordance with an operation condition of the engine.

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patent: 11-82028 (1999-03-01), None

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