Fuel injection nozzle with timing sensor

Details Fuel injection nozzle with timing sensor Fuel injection nozzle with timing sensor

1985-04-26

1987-05-05

Peters, Jr., Joseph F.

Fluid sprinkling, spraying, and diffusing

With signals, indicators, recorders, meters or changeable...

Position or extent of motion indicator

2395333, 73119A, B67D 508, F02M 3900, G01M 1500

Patent

active

046625640

ABSTRACT:
A fuel injection nozzle for injecting fuel into a diesel engine includes a nozzle holder having a hole defined therein in a direction transverse to the axis of the nozzle holder and opening into a spring chamber defined in the nozzle holder. An insulating member is fitted in the hole in a fluid-tight manner. In the spring chamber, there are disposed a spring seat remotely from a needle valve and supporting a spring for applying a spring force to close the needle valve, and a conductive body extending through the insulating member in a fluid-tight manner and having an end positioned between the spring seat and an inner wall surface of the nozzle holder. A pressure-sensitive element is fixed to the end of the conductive body and is actuated in response to the spring force applied thereto through the spring seat for producing an output signal which is fed out through the conductive body to thereby detect the timing of opening of the fuel injection nozzle. Alternatively, the electric resistance between the needle valve and the nozzle holder is detected through the conductive body to detect the timing of opening of the fuel injection nozzle.

REFERENCES:
patent: 3596507 (1971-08-01), Oshima
patent: 4109518 (1978-08-01), Dooley et al.
patent: 4181010 (1980-01-01), Knape et al.
patent: 4183467 (1980-01-01), Sheraton et al.
patent: 4398670 (1983-08-01), Hofmann

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