Ignition timing control apparatus and method for internal combus

Details Ignition timing control apparatus and method for internal combus Ignition timing control apparatus and method for internal combus

1998-07-17

2000-05-16

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

123305, 12340647, F02B 1700, F02P 515

Patent

active

060621907

ABSTRACT:
In ignition timing control apparatus and method for an internal combustion engine which carries out a switching of a combustion mode between a stratified charge combustion and a homogeneous charge combustion according to an engine driving condition, an ignition timing value in the mode of the stratified charge combustion during a transfer of a switching of the combustion mode between the stratified charge combustion and the homogeneous charge combustion is generated using both of at least one first ignition timing map used when the combustion mode of the engine is in a steady state of the stratified charge combustion and a second ignition timing map carried out at a rich limit of an air-fuel mixture ratio and which is used at a switching point between the stratified charge combustion and the homogeneous charge combustion, for example, through an interpolation based on a variation rate in a status variable of an air-fuel mixture supplied into each cylinder.

REFERENCES:
patent: 5078107 (1992-01-01), Morikawa
patent: 5875756 (1999-03-01), Kamura et al.
patent: 5937822 (1999-08-01), Nakajima
patent: 5992372 (1999-11-01), Nakajima

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