Combustion monitoring system for fuel injected engines

Details Combustion monitoring system for fuel injected engines Combustion monitoring system for fuel injected engines

1978-11-14

1980-10-14

Myracle, Jerry W.

Measuring and testing

Vehicle drive train

Rear end

73119A, 310338, G01M 1500

Patent

active

042274028

ABSTRACT:
A transducer and associated diagnostic system for fuel injected diesel engines of the type having glow plugs to provide supplementary ignition during starting and warm-up periods. A piezoelectric transducer unit is adapted to screw into the receptacle normally provided in each cylinder for a glow plug. The unit includes a piezoelectric element which is held under tension by a conductive rubber plug which coacts with a coaxial connector in transmitting the pressure indicative output signal. The transducer develops an electrical signal which varies in accordance with the pressure-time characteristic of the cylinder combustion chamber, the electrical signal representing performance of each cylinder being processed individually to provide timing and other valuable information or being combined with electrical signals developed for other cylinders of the engine in a comparative diagnostic system.

REFERENCES:
patent: 2256307 (1941-09-01), Beale et al.
patent: 2316269 (1943-04-01), Maruhn
patent: 2454264 (1948-11-01), Stigter
patent: 4012940 (1977-03-01), Change et al.

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