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Title: Fuel injection device

A fuel injection device is described for injecting fuel into a combustion chamber of an internal combustion engine, comprising: a body having first and second bores formed therein and extending in the axial direction thereof; a delivering plunger fitted into the first bore and defining a delivering pump chamber therein; driving means for reciprocating the delivering plunger in synchronism to the engine; pressurized medium supplying means for supplying a pressurized medium under a constant pressure to the delivering pump chamber, the pressurized medium supplying means including a pressurized medium source and a control passage linking the pressurized medium source to the delivering pump chamber; an electromagnetic valve provided on the control passage for opening and closing the control passage; and an injection plunger fitted into the second bore and defining, in the second bore, a linking chamber communicating with the delivering pump chamber and an injection pump chamber, the linking chamber and the delivering chamber becoming a liquid-tight chamber when the electromagnetic valve closes the control passage.
Authors:
; ;
Publication Date:
OSTI Identifier:
6589645
Report Number(s):
US 4653448
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 19 Feb 1985
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; INTERNAL COMBUSTION ENGINES; FUEL INJECTION SYSTEMS; VEHICLES; COMBUSTION CHAMBERS; ELECTROMAGNETS; NOZZLES; PRESSURIZING; PUMPS; SYNCHRONIZATION; VALVES; VOLUME; CONTROL EQUIPMENT; ELECTRICAL EQUIPMENT; ENGINES; EQUIPMENT; FLOW REGULATORS; FUEL SYSTEMS; HEAT ENGINES; MAGNETS 330100* -- Internal Combustion Engines