PURPOSE: To improve the drivability by detecting the differential air-fuel ratio from the optimal level under deceleration, then correcting the reduced fuel on the basis of said detected level thereby preventing deterioration of emission and fuel consumption.
CONSTITUTION: Under steady state of engine, the amount of fuel to be fed to an engine 1 is determined by a control circuit CONT from signals from a suction air flow detector 2, rotation sensor 3 and water temperature sensor 4, then the feedback correction obtained from a signal from an air-fuel ratio sensor 6 is corrected to produce the valve-open time of a fuel injection valve 8. When the deceleration state of engine 1 is detected by a throttle sensor 91 or a suction air flow sensor 2, the control circuit CONT will further reduce the amount of fuel. Consequently, deterioration of emission and fuel consumption can be prevented resulting in improvement of the drivability.
SAITOU TSUTOMU
KOHAMA TOKIO
SAITOU KIMITAKA
TAKAHASHI MASARU
SATOU KUNIHIKO
TOYOTA MOTOR CO LTD
| JPS5828568A | 1983-02-19 | |||
| JPS57143136A | 1982-09-04 | |||
| JPS5718440A | 1982-01-30 |
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