Microwave and luminous probe

Details Microwave and luminous probe Microwave and luminous probe

1983-12-21

1985-10-08

Myracle, Jerry W.

Measuring and testing

Vehicle chassis

Steering

73119A, G01M 1500

Patent

active

045452385

ABSTRACT:
A microwave and luminous probe for use in a system for detecting the piston position in an internal combustion engine and the light emitted in a combustion chamber thereof on the basis of a microwave signal and a luminous signal includes a hollow cylindrical case body fitted into the combustion chamber, internal and external conductors coaxially inserted within the case body and having different diameters from each other in the ratio of from 1:1.5 to 1:4, an annular passage defined by an annular space formed between the internal and external conductors and serving as microwave and light transmitting members, and a dipole antenna composed of a metal tube forming the internal conductor protruded from the annular passage in the range of from 1/8 to 3/8 of the wavelength of the microwave. The probe detects the light emitted by combustion in the combustion chamber with high accuracy.

REFERENCES:
patent: 4337648 (1982-07-01), Gillespie
patent: 4403504 (1983-09-01), Krage et al.
patent: 4484469 (1984-11-01), Grover et al.

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