Patent · US Expired

Identification of engine cylinder having fault

US4133205A · kind A · utility

5Cited by
3References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 25, 1977
Grant dateJan 9, 1979
Priority date—
Expiry dateNov 25, 1997

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01M15/12
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.