Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger
Patent
1983-10-26
1985-09-10
Marbert, James B.
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
239585, F02M 4900, F02M 5500
Patent
active
045401225
ABSTRACT:
An electromagnetic unit fuel injector for use in a diesel engine includes a housing having a bushing with an externally actuated plunger reciprocable therein to define a pump chamber open at one end for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is connected to a supply/spill chamber means via flow-through solenoid with pivot armature actuated, normally open, hollow pressure sensitive valve to permit the ingress and egress of fuel. The supply/spill chamber means adjacent to the head of the valve is in flow communication with a source of fuel at a relatively low supply pressure. During a pump stroke of the plunger, the solenoid can be energized, as desired, to effect pivotal movement of the pivot armature located so as to axially push the pressure sensitive valve to a closed position relative to an associate valve seat whereby to block flow from the pump chamber to the supply/spill chamber means, thus allowing the plunger to effect pressurization of the fuel so as to effect discharge of fuel from the injection nozzle.
REFERENCES:
patent: 4390130 (1983-06-01), Linssen et al.
patent: 4418886 (1983-12-01), Holzer
patent: 4463900 (1984-08-01), Wich
General Motors Corporation
Krein Arthur N.
Marbert James B.
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