Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1992-06-18
1993-03-23
Rollins-Cross, E.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
261DIG31, 261 362, 261 26, F02M 3704, B01D 4700
Patent
active
051954931
ABSTRACT:
A fuel management system for reducing pollution when an internal combustion engine is at idle includes a flow control valve located between the fuel tank and the float bowl of the carburetor to reduce the amount of fuel entering the carburetor. A pump is also provided between the fuel tank and the float bowl for removing the existing fuel from the float bowl and conveying it back to the fuel tank when the engine is at idle. The flow control valve in its reduced flow state and the pump are inactivated until the engine reaches a predetermined pressure at which time the existing fuel would be removed by the pump from the float bowl and the flow control valve would permit only a reduced flow of fuel to be conveyed to the float bowl sufficient to keep the engine running.
REFERENCES:
patent: 3196926 (1965-07-01), Gartland
patent: 3800769 (1974-04-01), Graffman
patent: 4000224 (1976-12-01), Phelps
patent: 4098236 (1978-07-01), Okawa
patent: 4457281 (1984-07-01), Ueyama et al.
patent: 4824613 (1989-04-01), Scott et al.
Moulis Thomas
Re-Tech, Inc.
Rollins-Cross E.
LandOfFree
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