F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/26
F02M 35/00 (2006.01) F02D 31/00 (2006.01)
Patent
CA 1202535
-1- TITLE OF THE INVENTION IDLING RPM FEEDBACK CONTROL METHOD INTERNAL COMBUSTION ENGINES ABSTRACT OF THE DISCLOSURE A method of controlling a control valve that regulates the quantity of supplementary air being supplied to an internal combustion engine, in a feedback manner responsive to the difference between actual engine rpm and desired idling rpm at idling of the engine. During deceleration of the engine, the control valve is controlled so as to supply the engine with supplementary air at a volumetric flow rate dependent upon a detected value of ambient atmospheric pressure, after the engine has been determined to be in a predetermined operating condition and until the above feedback control is initiated. Preferably, the volumetric flow rate of the supplementary air quantity is set to larger values as the detected value of the atmospheric pressure decreases. The engine is determined to be in the above predetermined operating condition when at least one of conditions is satisfied that the actual engine rpm is smaller than a predetermined value larger than the desired idling rpm, and that the output shaft of the engine is not in engagement with a driven shaft driven by the engine.
449262
Hasegawa Shumpei
Makino Yuzi
Honda Giken Kogyo Kabushiki Kaisha (also Trading As Honda Motor Ltd .)
Smart & Biggar
LandOfFree
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