Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Patent
1985-12-18
1987-10-20
Wolfe, Jr., Willis R.
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
123339, 123585, F02M 2306, F02M 2308
Patent
active
047006749
ABSTRACT:
A method for controlling the valve opening period of a control valve for controlling a quantity of supplementary air supplied to an internal combustion engine during idling in a feedback manner responsive to the difference between the actual engine speed value and a desired idling speed value. When the engine is decelerating with the throttle valve fully closed, it is determined which of a plurality of predetermined engine speed values higher than the desired idling speed value, the engine speed has dropped across, and a decrease rate of the engine speed is detected at one of the predetermined engine speed. A quantity of supplementary air is determined, which corresponds to the one detected predetermined engine speed value and the detected decrease rate, based upon which the control valve is opened. Preferably, the determined valve opening period is corrected depending upon a magnitude of load of an electrical device applied on the engine.
REFERENCES:
patent: 4406262 (1983-09-01), Ikeura
patent: 4418665 (1983-12-01), Nagase
patent: 4438744 (1984-03-01), Hasegawa
patent: 4491107 (1985-01-01), Hasegawa et al.
patent: 4557234 (1985-12-01), Ito
Honda Giken Kogyo K.K.
Lessler Arthur L.
Wolfe, Jr. Willis R.
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