Method and apparatus for inspecting rough idling of a multiple-c

Details Method and apparatus for inspecting rough idling of a multiple-c Method and apparatus for inspecting rough idling of a multiple-c

1981-02-03

1983-05-17

Myracle, Jerry W.

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

043834400

ABSTRACT:
A method and an apparatus for inspecting rough idling of a multiple-cylinder engine. The method comprises the steps of obtaining the engine speed, obtaining from the data of the engine speed the minimum value of engine speed in the vicinity of the time of starting of explosion in each cylinder, finding differences between the minimum values of the cylinders and inspecting the condition of revolution of the engine by the differences. The apparatus for carrying the method comprises a rotation change detecting sensor, a cylinder sorting sensor mounted to a specific cylinder, a rotation change signal generator and an output difference operation circuit.

REFERENCES:
patent: 3677075 (1972-07-01), Scott
patent: 4064747 (1977-12-01), Rackliffe et al.
patent: 4104990 (1978-08-01), Frobenius
patent: 4179922 (1979-12-01), Bouverie et al.

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