Combustion state-detecting system for internal combustion engine

Measuring and testing – Vehicle chassis – Steering

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F02D 4500, G01M 1500

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active

054150353

ABSTRACT:
A combustion state-detecting system, for internal combustion engines, has a crank angle sensor. The crank angle sensor generates a crank angle signal with a predetermined period shorter than a firing period of the engine whenever the crankshaft rotates through a predetermined angle. A value of the rotational speed of the engine is detected whenever the crank angle signal is generated. A first average value of the detected engine rotational speed is calculated over a period of one rotation of the crankshaft, followed by calculating a second average value of the first average value over every firing period, to thereby calculate a rate of variation in the second average value over every firing period. The rate of variation is compared with a predetermined value, to determine whether or not the engine is in a degraded state of combustion.

REFERENCES:
patent: 4337647 (1982-07-01), Radcliffe et al.
patent: 5041980 (1991-08-01), Maddock et al.
patent: 5044195 (1991-09-01), James et al.
patent: 5095742 (1992-03-01), James et al.
patent: 5237862 (1993-08-01), Mangrulkar et al.
patent: 5263364 (1993-11-01), Nakayama et al.
patent: 5307671 (1994-05-01), Akase
patent: 5309756 (1994-05-01), Osawa et al.

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