Torque variation detecting method and apparatus for internal com

Details Torque variation detecting method and apparatus for internal com Torque variation detecting method and apparatus for internal com

1982-07-19

1985-05-14

Gruber, Felix D.

Boots, shoes, and leggings

731174, 364508, 364551, G01L 2332, G01M 1500, G01P 1511

Patent

active

045176485

ABSTRACT:
A torque variation in an internal combustion engine due to the combustion variations is detected at each predetermined period. An average torque variation to be compared with the detected torque variation is predetermined experimentally based on the engine speed and the intake manifold pressure and is stored in a memory. The number of the detected torque variations which exceed the average torque variation multiplied by a predetermined constant is counted, and if the ratio of the counted number to the total number of the detected torque variations is larger than a predetermined reference value, then the presence of a torque variation is determined.

REFERENCES:
patent: 4271469 (1982-06-01), Kawai et al.
patent: 4354378 (1982-10-01), Oshiage et al.
patent: 4356551 (1982-10-01), Iwase et al.
patent: 4366544 (1982-12-01), Shima et al.
patent: 4388902 (1983-06-01), Latapie
patent: 4425891 (1984-01-01), Kashimura et al.
patent: 4428344 (1984-01-01), Focht
patent: 4429565 (1984-02-01), Utsumi et al.

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