Dual nozzle single pump fuel injection system

Patent · Tue Feb 25 00:00:00 EST 1992

OSTI ID:5279019

Gonzalez, C

This patent describes an improvement in a fuel injection system in a stratified charge hybrid internal combustion engine including a main combustion chamber, a precombustion chamber connected with the main chamber, fuel injectors in the main combustion chamber and precombustion chamber which open at higher and lower pressure levels respectively to sequentially inject fuel into the prechamber and the main chamber, timed spark ignition means in the prechamber for ignition of the fuel-air mixture therein, and an engine driven and timed fuel injection pump having a variable output capacity that varies with power level position, the injection pump is supplied by a low pressure charging pump. The improvement comprises: a shuttle valve including a bore therein; a shuttle spool means positioned within the bore defining a prechamber supply chamber on one side thereof and a spool activation chamber on the opposite side thereof the spool means having a first and second position; biasing means urging the spool towards it first position with the spool actuation chamber at its minimum volume; first conduit means connecting charging pressure to the prechamber supply camber in the first position oil the spool means; second conduit means connecting the injection pump to spool actuation chamber; third conduit means connecting the spool actuating chamber with the main injector; forth conduit means connecting the prechamber supply chamber with the prechamber injector; the initial charge from the injection pump actuates the spool means from its fir to its second position.

• Assignee: Cessna Aircraft Co., Wichita, KS (United States)
• Patent Number(s): US 5090378; A
• Application Number: PPN: US 7-661832
• OSTI ID: 5279019
• Resource Relation: Patent File Date: 22 Feb 1991
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL INJECTION SYSTEMS
NOZZLES
SPARK IGNITION ENGINES
ACTUATORS
DESIGN
FUEL-AIR RATIO
HYBRID SYSTEMS
PUMPS
ENGINES
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
330101* - Internal Combustion Engines- Spark-Ignition
330603 - Vehicle Design Factors- Engine System
330400 - Advanced Propulsion Systems- Hybrid Systems