Fuel injector for an internal combustion engine

Patent · Tue Mar 27 04:00:00 EST 1990

OSTI ID:6791216

Peff, J P

This patent describes a fuel injector for an internal combustion engine. It comprises: a body having a proximal end and a distal end and a central bore extending axially from the proximal end to the distal end; a reciprocating plunging member positioned within the main fuel chamber; a nozzle disposed at the distal end of the central bore and communicating with the main fuel chamber; valve means disposed within the distal end of the bore and axially moveable to open and close the nozzle to allow fuel to exit the injector and enter an engine cylinder; a first fuel passage within the body for supplying fuel at a supply pressure to the fuel flow control chamber, a second fuel passage for communicating fuel from the main fuel chamber to the nozzle, a third fuel passage for communicating fuel from the fuel flow control chamber to the main fuel chamber and a fourth fuel passage for draining the fuel from the main fuel chamber; a control valve having a first port communicating with a source of pressurized fuel, a second port communicating with a fuel drain and a third port communicating with the first fuel passage; and fuel flow control means.

• Assignee: Cummins Engine Co., Inc., Columbus, IN
• Patent Number(s): US 4911127; A
• Application Number: PPN: US 7-379331A
• OSTI ID: 6791216
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
HYDRAULICS
INTERNAL COMBUSTION ENGINES
MECHANICS
NOZZLES
RELIEF VALVES
VALVES