Piezoelectric low-pressure fuel injector

Patent · Tue Jan 13 04:00:00 EST 1987

OSTI ID:6885335

Igashira, T; Sakakibara, Y; Abe, S; Takigawa, M; Izawa, A

This patent describes a piezoelectric low-pressure fuel injector for use in spray injecting a metered quantity of low-pressure fuel into an intake air stream flowing into the cylinder of a spark-ignition internal combustion engine. The fuel injector includes an injector body having a fuel inlet and a pumping chamber communicated with the fuel inlet and open at an end, a pumping piston received movably in the pumping chamber, a piezoelectric drive housed in the injector body and operatively connected to the piston, and a normally closed output control valve positioned between the pumping chamber and the exterior of the injector body for closing the open end of the pumping chamber and operable to release fuel therethrough under a predetermined fuel pressure.

• Assignee: Nippon Soken, Inc., Nishio
• Patent Number(s): US 4635849
• OSTI ID: 6885335
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
AIR FLOW
AUTOMOTIVE FUELS
CLOSURES
CONTROL EQUIPMENT
ELECTRIC MOTORS
ELECTRICITY
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
METERING
MOTORS
PIEZOELECTRICITY
POSITIONING
PRESSURE DEPENDENCE
PUMPING
PUMPS
SPARK IGNITION ENGINES
SPRAYS
VALVES