Fuel injection valve

Patent · Tue Sep 23 04:00:00 EDT 1986

OSTI ID:5147089

Ishibashi, T; Taira, S

A fuel injection valve is described for an internal combustion engine, including a main body having injection holes formed in a tip thereof and a fuel intake passageway formed therein and communicating with the injection holes, a nozzle needle slidably fitted within the main body for alternately closing and opening the injection holes, a plunger chamber defined within the main body, a lift-limiting plunger slidably fitted in the plunger chamber and having an end face remote from the nozzle needle disposed as a pressure-receiving surface to receive fuel pressure for limiting the lifting amount of the nozzle needle and a back pressure chamber. The improvement described here consists of a pressure inlet chamber permanently communicating with the back pressure chamber and disposed to be selectively communicated with the fuel intake passageway and disconnected therefrom by the selector valve, in synchronism with the selective establishment and interruption of communication between the back pressure chamber and the fuel intake passageway; an accumulator chamber communicating with the pressure inlet chamber; an accumulator slidably fitted within the accumulator chamber and liftable in a direction away from the pressure inlet chamber with an increase in the pressure within the pressure inet chamber; and urging means urging the accumulator in a direction toward the pressure inlet chamber against lifting of the accumulator.

• Assignee: Diesel Kiki Co., Ltd., Tokyo
• Patent Number(s): US 4612893
• OSTI ID: 5147089
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
NOZZLES
PRESSURE EFFECTS
SYNCHRONIZATION
VALVES
VELOCITY