F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
342/14, 341/38.1
F02D 41/08 (2006.01) F02D 31/00 (2006.01) F02D 41/04 (2006.01)
Patent
CA 2029501
IDLE SPEED ADJUSTING SYSTEM FOR INTERNAL COMBUSTION ENGINE ABSTRACT OF THE DISCLOSURE: An idle speed adjusting system for effecting feedback control of the idle speed of an internal combustion engine comprises a reference control amount output circuit for producing and delivering a reference control signal necessary for maintaining a command engine speed; a speed controller for generating a speed correction signal representing the offset of the running speed of the engine from the command engine speed; a flow rate controller for controlling the flow rate of intake air supplied to the engine, in accordance with the reference control signal and the speed correction signal; and an auxiliary flow rate controller for controlling the flow rate of the intake air in accordance with the speed correction signal and independently of the flow rate control- ler, so as to adjust the speed correction signal to a prede- termined value. In the system, there is provided an ambient air temperature sensor for delivering an ambient air tempera- ture signal to the reference control amount output circuit so as to vary the reference control signal in accordance with a change in the ambient air temperature.
Mitsubishi Denki Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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