Electronically controlled distributor type fuel injection pump

Patent · Tue May 06 04:00:00 EDT 1986

OSTI ID:5543092

Kobayashi, M; Nozaki, S; Kobayashi, T

A distributor type fuel injection pump is described which consists of: a plunger barrel; a plunger received within the plunger barrel for concurrent reciprocating and rotative motion for suction, pressure delivery and distribution of fuel; a pair of cut-off ports formed in the plunger and the plunger barrel at a predetermined axial location and registrable with each other to spill pressurized fuel in the plunger into a zone under lower pressure; a communication passageway communicating a pump working chamber defined by the plunger at one end thereof with the zone under lower pressure; a fuel suction passage extending between the pump working chamber and the zone under lower pressure; the communication passageway extending between the pump working chamber and an intermediate portion of the fuel suction passage; a solenoid valve arranged across the communication passageway for blocking same; and control means for controlling means for controlling the solenoid valve to cause same to selectively assume an open position and a closed position; wherein while the plunger moves toward the pump working chamber, the solenoid valve is closed by the control means to start injection of fuel present in the pump working chamber, and upon registration of the cut-off ports with each other, the fuel injection is terminated; the solenoid valve including a valve body disposed opposite an end face of the one end of the plunger; the control means including means for selectively energizing or deenergizing the solenoid for causing the valve body to selectively assume the closed position or the open position.

• Assignee: Diesel Kiki Co., Ltd., Tokyo
• Patent Number(s): US 4586480
• OSTI ID: 5543092
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
CONTROL
CONTROL EQUIPMENT
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
MOTION
POSITIONING
PRESSURE CONTROL
PRESSURIZING
PUMPS
ROTATION
SOLENOIDS
VALVES