Ignition and combustion control in internal combustion engine

Details Ignition and combustion control in internal combustion engine Ignition and combustion control in internal combustion engine

1998-07-07

2000-07-18

Kwon, John

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

123305, 12340647, 12340623, F02B 1700

Patent

active

060892064

ABSTRACT:
In a combustion changeover of an internal combustion engine between a stratified combustion mode and a homogeneous combustion mode, an engine control system modifies an ignition timing to eliminate unwanted torque increase due to fuel increase. The controller determines an excess quantity, such as an excess factor of an actual intake air quantity with respect to a target intake air quantity, indicative of torque variation due to fuel increase, and determines an ignition timing modification quantity to eliminate the torque variation, in accordance with the excess quantity. With this modification quantity, the control system retards the ignition timing transiently and ensure smooth combustion changeover.

REFERENCES:
patent: 5813387 (1998-09-01), Minowa et al.
patent: 5875756 (1999-03-01), Kamura et al.
patent: 5878711 (1999-03-01), Kamura et al.
patent: 5896840 (1999-04-01), Takahashi

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