Measuring and testing – Internal combustion engine or related engine system or... – Compression
Patent
1983-12-21
1985-07-16
Myracle, Jerry W.
Measuring and testing
Internal combustion engine or related engine system or...
Compression
731173, G01M 1500
Patent
active
045288453
ABSTRACT:
The apparatus for detecting combustion timing includes: a microwave unit for generating a microwave of a predetermined frequency by a microwave oscillator and detecting the received microwave to convert the same into a low frequency signal; a probe comprising a microwave sensor for radiating the microwave into a combustion chamber and receiving a reflected wave and a light sensor for electrically detecting the light emitted upon combustion; and a processing unit comprising a peak detector unit for detecting peaks of the microwave signal, a luminous signal processor unit for detecting a peak value of the first peak of a luminous signal supplied by the light sensor in each cycle and also detecting the time when the luminous signal reaches an intensity having a predetermined proportion to the first peak value thereof, and an operating unit for operating a time difference between a midpoint between peaks of the microwave signal and the time when the luminous signal reaches an intensity having a predetermined proportion to the first peak value thereof. The apparatus detects combustion timing in an internal combustion engine with high accuracy.
REFERENCES:
patent: 4337648 (1982-07-01), Gillespie
patent: 4373384 (1983-02-01), Olson et al.
Esaki Michiru
Suzuki Yasuhiko
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