Electromagnetic unit fuel injector

Details Electromagnetic unit fuel injector Electromagnetic unit fuel injector

1977-09-12

1978-12-12

Blunk, Evon C.

Fluid sprinkling, spraying, and diffusing

Injection nozzle opened by relieving supply

123139AK, 123139E, 239585, F02M 4702, F02M 5500

Patent

active

041292553

ABSTRACT:
An electromagnetic unit fuel injector for use in a diesel engine has a pump including a cam actuated plunger reciprocable in a bushing for intensifying the pressure of fuel delivered to a pressure actuated injection valve controlling flow discharge out through a spray outlet, to a pressure accumulator and, through a throttling orifice passage into one end of a modulation pressure control chamber having a spring biased piston movable therein, the piston engaging one end of the injection valve, this one end of the pressure control chamber downstream of the throttling orifice passage being connected by a conduit, including a solenoid actuated valve controlling flow through a metering orifice to a low pressure fuel drain return line whereby the pressure of fuel in the pressure control chamber acting on the piston is modulated so as to control the seating and unseating of the injection valve.

REFERENCES:
patent: 3006556 (1961-10-01), Shade et al.
patent: 3464627 (1969-09-01), Huber
patent: 3777977 (1973-12-01), Regneault et al.

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