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Title: Diesel engine fuel injection pump capable of injection timing adjustment

A diesel engine fuel injection pump capable of injection timing adjustment is described comprising: (a) housing means; (b) a plunger assembly reciprocably mounted within the housing means and defining a pumping chamber therein; (c) the housing means having defined therein a fuel inlet port to the pumping chamber in a predetermined position in the longitudinal direction of the pumping chamber; (d) drive means for reciprocably moving the plunger assembly within the pumping chamber between a first extreme position; (e) the plunger assembly being formed of at least two transversely split segments movable toward and away from each other within limits and including resilient means biasing the segments of the plunger assembly toward each other; and (f) the housing means further including a timing fluid inlet port for introduction of a timing fluid under variable pressure between the segments of the plunger assembly to move the plunger assembly segments away from each other to an extent that timing fluid pressure is counterbalanced by force of the resilient means for controllably varying the distance therebetween and, in consequence, for varying the prestroke of the plunger assembly solely in response to variation of the timing fluid pressure to effect adjustment of injection timing.
Authors:
;
Publication Date:
OSTI Identifier:
5371621
Report Number(s):
US 4712985
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 27 Jun 1986
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; DIESEL ENGINES; FUEL INJECTION SYSTEMS; PUMPS; DESIGN; HYDRAULICS; OPERATION; PRESSURIZING; PUMPING; TIMING PROPERTIES; ENGINES; FLUID MECHANICS; FUEL SYSTEMS; HEAT ENGINES; INTERNAL COMBUSTION ENGINES; MECHANICS 330102* -- Internal Combustion Engines-- Diesel