Combustion state-detecting system for internal combustion engine

Details Combustion state-detecting system for internal combustion engine Combustion state-detecting system for internal combustion engine

1993-11-10

1994-12-20

Raevis, Robert

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

053737326

ABSTRACT:
A combustion state-detecting system for an internal combustion engine calculates a first average speed by averaging the rotational speed of the engine over a time period corresponding to duration of one stroke of a cylinder, and a second average speed by averaging the rotational speed of the engine over a time period corresponding to duration of one cycle of all strokes of the cylinder. The system calculates a difference between the first average speed and the second average speed, and determines based on the difference whether or not the combustion state of the engine is abnormal.

REFERENCES:
patent: 5044195 (1991-09-01), James et al.
patent: 5117681 (1992-06-01), Dosdall et al.
patent: 5200899 (1993-04-01), Ribbens et al.

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