EGR control system for engine

Details EGR control system for engine EGR control system for engine

1998-06-08

1999-11-09

Kwon, John

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

123430, F02B 1700

Patent

active

059793961

ABSTRACT:
An engine control system for an internal combustion engine of a type having a stratified combustion mode and a homogeneous combustion mode comprises a controller for controlling an EGR flow in the engine with an EGR control valve. The controller effects a changeover of an EGR control mode of the EGR control valve from a first EGR mode to a second EGR mode immediately in response to a changeover request signal before an actual changeover of a combustion control mode from the stratified combustion mode to the homogeneous combustion mode. In the case of a changeover from the homogeneous mode to the stratified mode, the controller effects a changeover of the EGR control mode from the second EGR mode to the first EGR mode in response to an actual changeover of the combustion control mode, with a delay after the changeover request signal.

REFERENCES:
patent: 5322043 (1994-06-01), Shriner et al.
patent: 5749334 (1998-05-01), Oda et al.
patent: 5848580 (1998-12-01), Mashiki

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