Deceleration fuel cut device for internal combustion engines

Details Deceleration fuel cut device for internal combustion engines Deceleration fuel cut device for internal combustion engines

1982-05-17

1984-03-06

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123492, 123494, F02B 300

Patent

active

044347693

ABSTRACT:
A deceleration fuel cut device adapted to interrupt the supply of fuel to an internal combustion engine when a detected actual engine rotational speed is higher than a predetermined value, and simultaneously a detected intake pipe pressure is lower than a predetermined value. The predetermined engine speed value is set to lower values as the detected actual engine temperature increases. The predetermined intake pipe pressure value is determined as a function of the detected actual engine speed. The predetermined intake pipe pressure value and/or the predetermined engine speed value may be set at different values between the time of initiation of cutting off the fuel supply and the time of termination of same, to impart a hysteresis characteristic to the fuel cut operation.

REFERENCES:
patent: 3727591 (1973-04-01), Suda
patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 4133326 (1979-01-01), Cops et al.
patent: 4245605 (1981-01-01), Rice et al.
patent: 4257363 (1981-03-01), Zeller
patent: 4274382 (1981-06-01), Sugusawa et al.
patent: 4356803 (1982-11-01), Miyagi

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