Identification of engine cylinder having fault

Details Identification of engine cylinder having fault Identification of engine cylinder having fault

1977-11-25

1979-01-09

Myracle, Jerry W.

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

041332059

ABSTRACT:
The cylinder of an internal combustion engine having a fault is identified by using a non-contacting transducer to generate a reference engine-cycle electrical signal having a phase determined by a reference one of the cylinders of the engine, and by using a non-contacting transducer to generate a fault engine-cycle electrical signal having a phase determined by the one of the cylinders having a fault. The phase difference between the fault electrical signal and the reference electrical signal is translated to a number identifying the cylinder having the fault.

REFERENCES:
patent: 2082030 (1937-06-01), Schrader et al.
patent: 3777559 (1973-12-01), Rennick et al.
patent: 3977239 (1976-08-01), Hulls et al.

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