Measuring and testing – Simulating operating condition – Marine
Patent
1996-04-05
1997-03-25
Chilcot, Richard
Measuring and testing
Simulating operating condition
Marine
731173, 12333915, 36443103, F02D 1902, G01M 1500
Patent
active
056146663
ABSTRACT:
An idling rotational speed control system for an internal combustion engine installed in a vehicle including an air-fuel ratio sensor arranged in the exhaust system, and an ECU which corrects the air-fuel ratio of an air-fuel mixture supplied to the engine in a feedback manner responsive to an output from the air-fuel ratio sensor, by using an air-fuel ratio correction amount calculated according to the output from the air-fuel ratio sensor. The rotational speed of the engine is detected, and the ECU controls the rotational speed of the engine during idling to a desired value in a feedback manner responsive to the detected rotational speed of the engine. The ECU determines whether the idling rotational speed control system is abnormal, based on the detected rotational speed of the engine and a control parameter used for the control of the rotational speed of the engine during idling. The idling rotational speed control system includes at least one of a brake system operation sensor for detecting operation of the brake system, and a throttle valve opening sensor for detecting opening of the throttle valve. When at least one of conditions is satisfied that the brake system is operated, the opening of the throttle valve exceeds a predetermined value, and the air-fuel ratio correction amount falls outside a predetermined range, the abnormality determination is inhibited.
REFERENCES:
patent: 4508076 (1985-04-01), Oda et al.
patent: 4509477 (1985-04-01), Takao et al.
patent: 4513710 (1985-04-01), Kobayashi et al.
patent: 4545349 (1985-10-01), Ito et al.
patent: 4580535 (1986-04-01), Danno et al.
patent: 4589390 (1986-05-01), Wazaki et al.
patent: 4696272 (1987-09-01), Kato et al.
patent: 4782690 (1988-11-01), Terasaka
Hara Fumio
Isobe Takashi
Chilcot Richard
Dombroske George M.
Honda Giken Kogyo Kabushiki Kaisha
LandOfFree
Idling rotational speed control system for internal combustion e does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Idling rotational speed control system for internal combustion e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Idling rotational speed control system for internal combustion e will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2204818