Boots – shoes – and leggings
Patent
1994-07-18
1996-09-24
Trans, Vincent N.
Boots, shoes, and leggings
36443105, 123520, 123690, F02D 4122
Patent
active
055597068
ABSTRACT:
A system, capable of determining an engine abnormality, is disclosed. The engine includes a first regulator for controlling air fuel ratio and a second regulator for controlling the purging amount of fuel vapor into an air-intake passage from a fuel tank. The variance in the purging amount effects the air fuel ratio. An engine control unit computes a parameter value used to control the air fuel ratio based on a signal from a detector which detects the operational condition of the engine, and controls the first regulator with the computed parameter value to allow the operational condition of the engine to approach a requested condition. A determining apparatus determines that an abnormality has occurred in the engine when the parameter value computed by the control unit continuously deviates from a predetermined numerical range for a predetermined period of time. The determining apparatus also automatically adjusts the numerical range in accordance with a degree of influence of the variance in the purging amount on the air fuel ratio.
REFERENCES:
patent: 4926825 (1990-05-01), Ohtaka et al.
patent: 4961412 (1990-10-01), Furuyama
patent: 5158059 (1992-10-01), Kuroda
patent: 5213088 (1993-05-01), Harada
patent: 5251592 (1993-10-01), Seki et al.
patent: 5287283 (1994-02-01), Musa
patent: 5443051 (1995-08-01), Otsuka
Toyota Jidosha & Kabushiki Kaisha
Trans Vincent N.
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