Internal combustion engine control apparatus

Details Internal combustion engine control apparatus Internal combustion engine control apparatus

1993-03-16

1994-03-01

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

F02D 4106, F02D 4118

Patent

active

052898091

ABSTRACT:
An internal combustion engine control apparatus is provided which is capable of performing various controls based upon the air quantity immediately after a current heated element of a hot wire air flow meter is heated to a predetermined temperature. When a key switch is rotated to an "ON" position, a large current flows through the air flow meter and the detected intake air quantity greatly exceeds the actual intake air quantity and therefore during the warm up period of the heater, the fuel injection amount is a constant corresponding to the coolant temperature until the engine speed reaches 500 rpm. Likewise during this warm up period, the smoothing processing of the fuel injection quantity is stopped. The fuel injection amount is switched from the constant value during starting to a variable quantity corresponding to air flow quantity when the output value of the air flow meter is less than a predetermined value and the engine speed is greater than 500 rpm or a predetermined time has elapsed since the key switch has been "ON".

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patent: 4949693 (1990-08-01), Sonoda
patent: 5074271 (1991-12-01), Suzuki et al.
patent: 5188082 (1993-02-01), Udo et al.
patent: 5215062 (1993-06-01), Asano et al.

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