F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/38.13
F02D 41/14 (2006.01) F01P 3/02 (2006.01) F01P 9/00 (2006.01) F02F 1/24 (2006.01) F01P 3/00 (2006.01) F02B 1/04 (2006.01) F02B 75/18 (2006.01) F02B 75/20 (2006.01) F02F 7/00 (2006.01)
Patent
CA 1241407
METHOD OF CONTROLLING AN AIR-FUEL RATIO FOR AN INTERNAL COMBUSTION ENGINE ABSTRACT OF THE DISCLOSURE In a method of controlling an air-fuel ratio for an internal combustion engine, a control section feedback-controls an electronically controlled carburetor in response to a signal from an O2 sensor which detects the concentration of O2 in the exhaust gas. When the O2 sensor outputs a rich signal for a predetermined time period after the air-fuel ratio is leaned upon deceleration of the engine, the rich air-fuel ratio is instantaneously and forcibly leaned by the control section in order to rapidly return it to a proper value. Thereafter, ordinary feedback control is resumed. With this method, the quantity of harmful exhaust gas components such as CO or the like can be reduced without making the operational performance of the engine deteriorate.
494370
Osada Akira
Suzuki Fujiyuki
Kirby Eades Gale Baker
Suzuki Jidosha Kogyo Kabushiki Kaisha
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