Method and apparatus for controlling idle speed of stratified ch

Details Method and apparatus for controlling idle speed of stratified ch Method and apparatus for controlling idle speed of stratified ch

1997-09-15

1999-03-02

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

12333916, 12333923, 12333925, F02D 4108

Patent

active

058757570

ABSTRACT:
An apparatus for controlling idle speed of an engine is disclosed. The engine is able to perform stratified charge combustion and uniform charge combustion. A fuel injection valve directly injects fuel into the combustion chamber to perform either stratified charge combustion or uniform charge combustion in accordance with the running state of the engine. An automatic transmission is operably coupled to the engine to selectively load the engine. The engine power is increased for avoiding a decrease in the idle speed of the engine when the transmission starts to operate while the engine is idling. However, the power increase is delayed from when the transmission starts operating. The amount of fuel injected from a fuel injection valve is increased to increase power of the engine during stratified charge combustion. The amount of air supplied to the combustion chamber is increased to increase power of the engine during uniform charge combustion. The delay is longer during stratified charge combustion than during uniform charge combustion.

REFERENCES:
patent: 5031594 (1991-07-01), Morikawa
patent: 5628290 (1997-05-01), Iida et al.

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