Intaking rate control device of internal combustion engine

Details Intaking rate control device of internal combustion engine Intaking rate control device of internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

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341/38.1

F02D 9/00 (2006.01) F02D 31/00 (2006.01) F02D 41/00 (2006.01)

Patent

CA 2030586

A method and apparatus for controlling the air in- take rate of an internal combustion engine, which inter- nal combustion engine includes a deceleration control system responsive to actuation of an idle switch during deceleration for bypassing an intake throttle valve and feeding bypass air into the engine. The control device actuates the deceleration control system only when (1) the cooling water temperature of the engine is greater than or equal to a predetermined water temperature, (2) the engine is decelerating, (3) the engine speed is less than or equal to an actuation speed associated with the deceleration control system, and (4) the engine speed is changing at a rate which is greater than or equal to an actuation differential change rate associated with the deceleration control system. The control device applies to the deceleration control system a control signal having a duty ratio which corresponds to the change rate of the engine speed and which increases the rate at which bypass air is taken into the engine.

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