Diesel engine fuel injection pump capable of injection timing adjustment

Patent · Tue Dec 15 04:00:00 EST 1987

OSTI ID:5371621

Wakasa, S; Okazaki, T

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.

• Assignee: Kabushiki Kaisha Komatsu Seisakusho, Tokyo
• Patent Number(s): US 4712985
• OSTI ID: 5371621
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
DESIGN
DIESEL ENGINES
ENGINES
FLUID MECHANICS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
HYDRAULICS
INTERNAL COMBUSTION ENGINES
MECHANICS
OPERATION
PRESSURIZING
PUMPING
PUMPS
TIMING PROPERTIES