Method and apparatus for detecting the ignition timing for a die

Details Method and apparatus for detecting the ignition timing for a die Method and apparatus for detecting the ignition timing for a die

1984-05-04

1987-04-21

Myracle, Jerry W.

Measuring and testing

Internal combustion engine or related engine system or...

Compression

123494, 324392, G01M 1500

Patent

active

046586423

ABSTRACT:
A method for detecting the ignition timing for an engine comprising the steps of detecting the production in a crank angle range outside of the range where ignition can occur of a crank angle signal by a crank angle sensor at a first time point, detecting an ignition signal corresponding to the burning flame within the combustion chamber of the engine at the second time point, calculating the time difference T.sub.o between the first and second time points, and seeking a crank angle displacement from the production of the crank angle signal to the ignition signal detected by the equation of T.sub.o /CSC.times.360, where CSC indicates a time interval between the crank angle signals and its apparatus. According to the present invention, even when the peak of the combustion light or the burning flame is detected twice for one combustion stroke, an accurate ignition timing can be detected by the detection of the first peak of the combustion light.

REFERENCES:
patent: 3939397 (1976-02-01), Maisonville
patent: 4231091 (1980-10-01), Motz
patent: 4373384 (1983-02-01), Olson et al.
patent: 4441360 (1984-04-01), Dooley et al.
patent: 4463729 (1984-08-01), Bullis et al.
patent: 4469952 (1984-09-01), Olson et al.
patent: 4492114 (1985-01-01), Yamanaka et al.

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