Internal-combustion engines – Engine speed regulator – Open loop condition responsive
Patent
1997-05-01
1999-03-02
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Open loop condition responsive
123478, 477100, 477109, 477111, F02D 4138, F02D 4300, B60K 4104
Patent
active
058757619
ABSTRACT:
An engine drive torque controller has a first mode in which torque is controlled by varying air-fuel ratio within a range greater than stoichiometric and a second mode in which torque is controlled while maintaining a substantially fixed air-fuel ratio. The control modes are selected to keep nitrogen oxide emissions low. The torque controller also changes the air-fuel ratio during transmission shifting to prevent variations in torque.
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Fujieda Mamoru
Nogi Toshiharu
Ohsuga Minoru
Oyama Yoshishige
Shiraishi Takuya
Argenbright Tony M.
Hitachi , Ltd.
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