High-pressure fuel injection system for diesel engine

Patent · Tue Jan 21 00:00:00 EST 1986

OSTI ID:5927204

Hoshi, Y

This patent describes a high-pressure fuel injection system for a diesel engine. This system consists of: (a) main pumps for injecting fuel each located at one of cylinders of the engine and formed with a fuel injecting port, a discharge valve located in a path connecting the first injected fuel space with the fuel injecting port. The discharge valve is opened when the fuel to be injected reaches a predetermined pressure level. A first injection timing fuel space fluidly connected with the first injected fuel space through a movable shuttle is filled with injection timing fuel, and a plunger varies the volume of the first injection timing fuel space; (b) a metering and distributing pump formed with injection fuel outputs and injection timing fuel outlets corresponding in number to the cylinders of the engine for discharging fuel in timed relation to the rotation of the engine; (c) fuel metering valves for metering fuel flowing into the second injected fuel space and second injection timing fuel space respectively; (d) pipes for fluidly connecting the first injected fuel space and first injection timing fuel space of the main pump for injecting fuel with the injected fuel outlets and injection timing fuel outlets of the metering and distributing pump respectively; and (e) a rocker arm mechanism for driving the plunger of the main pump for injecting fuel in timed relation to the rotation of the engine.

• Assignee: Hitachi, Ltd., Tokyo
• Patent Number(s): US 4565172
• OSTI ID: 5927204
• Resource Relation: Patent File Date: Filed date 28 Aug 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
FUEL INJECTION SYSTEMS
DESIGN
COMPRESSION
CYLINDERS
METERING
PIPES
PRESSURE CONTROL
PUMPS
ROTATION
SPACE DEPENDENCE
TIME DEPENDENCE
VALVES
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MOTION
330102* - Internal Combustion Engines- Diesel