Means for establishing timing in diesel engines using microwave

Details Means for establishing timing in diesel engines using microwave Means for establishing timing in diesel engines using microwave

1982-06-01

1984-01-31

Myracle, Jerry W.

Measuring and testing

Internal combustion engine or related engine system or...

Compression

731173, G01M 1500

Patent

active

044282290

ABSTRACT:
A method and apparatus for determining diesel engine fuel injection timing. While a diesel engine is running a microwave signal is supplied to the combustion chamber thereof and the reflected signal is detected. The combustion chamber is supplied with fuel by an outwardly opening poppet type injector. The reflected microwave signal has an asymmetric portion which is produced when the injector poppet opens to inject fuel. The method and system of this invention detects the occurrence of the asymmetric waveform and relates it to the top dead center position of the engine.

REFERENCES:
patent: 3589177 (1971-06-01), Merlo
patent: 3703825 (1972-11-01), Merlo
patent: 4331029 (1982-05-01), Wilson
patent: 4337648 (1982-07-01), Gillespie
patent: 4373384 (1983-02-01), Olson et al.
Merlo, A. L., Combustion Chamber Investigation . . . Resonances, IEEE Transactions on Industrial Electronics and Control Instrumentation, Apr. 1970.
Lienesch, J. H. et al., Using Microwaves to Phase Cylinder . . . Position, SAE paper 790103, Feb. 1979.

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