Method and apparatus for controlling the fuel supply of an inter

Details Method and apparatus for controlling the fuel supply of an inter Method and apparatus for controlling the fuel supply of an inter

1977-08-18

1981-02-17

Lazarus, Ronald H.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123493, F02D 3100

Patent

active

042508533

ABSTRACT:
A method and apparatus for controlling the fuel supply of an internal combustion engine in which the primary fuel injection valve control pulses are derived on the basis of signals from sensors which monitor various engine variables, e.g. intake air flow rate, induction tube pressure, engine speed and/or engine and air temperatures and in which the fuel supply is entirely interrupted during the condition of engine overrunning (negative output torque). After the termination of engine overrunning, the normal fuel quantity which would be supplied on the basis of prevailing sensor signals is intentionally increased for a predetermined length of time to compensate for engine cooling during overrunning. This is done by increasing the pulse length of the injection control pulses. The apparatus includes transducers and circuits for recognizing the condition of overrunning and circuitry for supplying temporarily lengthened fuel control pulses.

REFERENCES:
patent: 2877998 (1959-03-01), Cornelius
patent: 2879756 (1959-03-01), Cornelius
patent: 3346771 (1967-10-01), Sutton
patent: 3570460 (1971-03-01), Rabus
patent: 3690305 (1972-09-01), Shimada
patent: 3762383 (1973-10-01), Richards
patent: 4078631 (1978-03-01), Kadota
patent: 4127086 (1978-11-01), Harada

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