Electronic fuel injection device

Patent · Tue Apr 18 04:00:00 EDT 1989

OSTI ID:6015722

Tamura, H; Hiromasa, S; Kondo, T

This patent describes an electronic fuel injection device for feeding fuel to an internal combustion engine comprising: (a) a main body having at least two bores therein; (b) a pumping member which has at least two pistons, each piston being adapted to be fitted into a respective bore, and a base on which the pistons are formed, each bore and its associated piston forming a pump chamber; (c) means for driving the pump member; (d) a fuel supply passage for supplying fuel into the pump chambers; (e) injection nozzles adapted to be secured to a suction pipe of the internal combustion engine in order to supply fuel thereto when a predetermined pressure of fuel is provided thereto; (f) fuel injection passages connecting the injection nozzles to the pump chambers respectively; and (g) a spring member, provided between the main body and the base of the pumping member, for biasing the pumping member in a direction opposite to that in which the pumping member is moved by the driving means.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4821726
• OSTI ID: 6015722
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
DESIGN
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
PUMPS