Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1997-08-25
1999-09-07
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123295, 123399, 123681, 123698, F02D 4114
Patent
active
059470976
ABSTRACT:
An apparatus for controlling operation of an engine is disclosed. The apparatus includes a passage for supplying air to the engine and a fuel injection valve. The engine burns air-fuel mixture to produce torque. A valve adjusts the quantity of air supplied to the engine. An ECU actuates the valve based on the driving state of the engine. The ECU feedback controls the air-fuel ratio by altering the position of the valve to prevent torque shocks caused by changes in the air supply. The feedback control employs two correction factors, the first of which is representative of the air-fuel ratio of the mixture, and the second of which is representative of an average deviation of the first factor from a stoichiometric air-fuel ratio value. The air-fuel ratio of the mixture is feedback controlled as a function of both correction factors.
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Argenbright Tony M.
Toyota Jidosha & Kabushiki Kaisha
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