Fuel cock for an internal combustion engine

Patent · Tue Sep 22 00:00:00 EDT 1987

OSTI ID:5819696

Miyamoto, Y

This patent describes a fuel cock for an internal combustion engine comprising: a valve body having a tapered bore portion and a cylindrical bore portion. The fuel inlet port and fuel outlet port being communicated with a bottom of a fuel tank and a carburetor, an air outlet passage provided in the valve body being communicated with the atmosphere and the air inlet port; a fuel plug, having a large diameter portion at one end and a small diameter portion at an opposite end and a tapered periphery between the ends. It rotates in the tapered bore portion of the valve body so as to close and open a fuel passage between the fuel inlet port and the fuel outlet port and axially displaceable in the tapered bore portion so as to serve as a piston; an air plug having a cam portion. The air plug forming a passage so as to apply fluid pressure at the air inlet port to the chamber to urge the fuel plug towards the small diameter end of the fuel plug; valve means mounted in the air outlet passage including a projection slidably engaged with the cam portion to close and open the air outlet passage dependent on rotatory position of the air plug; and the fuel plug and air plug being so arranged as to open both the fuel passage and the air outlet passage at the same time so as to discharge vapor in the fuel tank to the atmosphere and to supply fuel to the carburetor from the fuel tank at the same time and to close both the fuel passage and the air outlet passage at the same time.

• Assignee: Fuji Jukogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4694810
• OSTI ID: 5819696
• Resource Relation: Patent File Date: Filed date 24 Dec 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL SYSTEMS
DESIGN
INTERNAL COMBUSTION ENGINES
AIR FLOW
CYLINDRICAL CONFIGURATION
DUCTS
FUEL-AIR RATIO
GAS FLOW
OPERATION
PISTONS
ROTATION
VALVES
VAPORS
CONFIGURATION
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUIDS
GASES
HEAT ENGINES
MOTION
330100* - Internal Combustion Engines