Internal-combustion engines – Charge forming device – Auxiliary control of carburetor fuel metering
Patent
1984-01-04
1985-12-03
Lall, Parshotam S.
Internal-combustion engines
Charge forming device
Auxiliary control of carburetor fuel metering
261DIG51, 261DIG67, 261DIG81, F02M 508
Patent
active
045560315
ABSTRACT:
A system for controlling a carburetor of an engine provided with a supercharger. A passage is provided for communicating a float chamber of the carburetor with an intake passage through a changeover valve. A vent pipe is provided for communicating the float chamber with the intake passage. The changeover valve comprises a diaphragm, a vacuum operated chamber defined by the diaphragm, a valve body operatively connected to the diaphragm, a passage for communicating the vacuum operated chamber with the intake passage at the downstream side of the carburetor, an opening for communicating the float chamber with the intake passage, and an opening for communicating the float chamber with the atmosphere. The vacuum operated chamber and the valve body are so arranged that the valve body closes the first opening and opens the second opening at light load to communicate the float chamber with the atmosphere.
REFERENCES:
patent: 4098247 (1978-07-01), Konishi et al.
patent: 4283356 (1981-08-01), Arai et al.
patent: 4376738 (1983-03-01), Reinmuth
patent: 4444013 (1984-04-01), Inoue et al.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Lall Parshotam S.
Wolfe W. R.
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