Method of detecting disturbances in an internal combustion engin

Details Method of detecting disturbances in an internal combustion engin Method of detecting disturbances in an internal combustion engin

1997-12-01

1999-02-02

Dombroske, George

Measuring and testing

Vehicle chassis

Steering

73 2332, 73116, 123419, 123436, 701110, 701112, G01M 1500, F02B 100, F02D 100

Patent

active

058668101

ABSTRACT:
The invention is directed to a method of detecting disturbances of the crankshaft rpm for an internal combustion engine which are caused by an empty tank. Uneven-running values (LU) of the engine are detected which are distributed in bands of values and the spacing between the bands of uneven-running values (LU) is computed. A quantity of the engine is detected which is relevant to the exhaust gas of the engine. A check is then made to determine whether the computed band spacing is less than a pregiven threshold spacing and whether the exhaust-gas relevant quantity lies within a pregiven threshold value interval and, if so, this data is utilized as an indication that the disturbances of the crankshaft rpm are caused by an empty tank.

REFERENCES:
patent: 4751907 (1988-06-01), Yamamoto et al.
patent: 5200899 (1993-04-01), Ribbens et al.
patent: 5513521 (1996-05-01), Klenk et al.
patent: 5672817 (1997-09-01), Sagisaka et al.

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