Fuel line injection sensor

Details Fuel line injection sensor Fuel line injection sensor

1978-11-06

1980-02-12

Myracle, Jerry W.

Measuring and testing

Internal combustion engine or related engine system or...

Compression

73702, G01M 1500

Patent

active

041877209

ABSTRACT:
A rugged and inexpensive sensor is disclosed for monitoring fuel injection characteristics such as injection pulse timing and width. A clamp is provided with hand grips and expandable jaws for quickly coupling to a fuel injection line. The jaws are biased into engagement with the line but are easily opened for releasing the clamp by urging the hand grips together. A transducer mounted on the clamp senses mechanical vibration caused by pressure pulsations in the line. The transducer is connected to circuitry for providing an output when the signal level from the transducer exceeds a threshold level. The sensor is self-compensating with the threshold level determined automatically from the maximum signal from the transducer. Therefore, different injection lines can be monitored with no manual adjustment of the clamp or circuitry even though the output of the transducer may vary from line to line.

REFERENCES:
patent: 3511088 (1970-05-01), Weaver
patent: 3731527 (1973-05-01), Weaver
patent: 4002155 (1977-01-01), Harned et al.
patent: 4040294 (1977-08-01), Masuda et al.
patent: 4109517 (1978-08-01), Dyballa

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