Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Patent
1990-08-01
1991-12-31
Kamen, Noah P.
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
137907, F02M 2102
Patent
active
050762451
ABSTRACT:
This invention has an inlet for either gaseous or liquified gases (LP gas requiring a vaporizer within the system) with the proper passages from the inlet to a back seated fuel valve which is opened by a pressure differential (vacuum from the idle system) across a diaphragm engaging a lever which moves a sealed actuating pin inward to open the fuel valve allowing gaseous fuels to move to the outlet through a proper confining passage. Placed between the outlet and the vacuum chamber of the fuel valve diaphragm is a chamber divided by a free floating diaphragm providing two chambers, one chamber is either balanced for air cleaner resistance or vented to the atmosphere, the other chamber having a free passage to the outlet and a passage in the center of the chamber, having communication with the vacuum side of the fuel valve diaphragm, which is throttled by the floating diaphragm diluting the idle vacuum signal to position the fuel valve.
REFERENCES:
patent: 3990432 (1976-11-01), Haynes et al.
patent: 4289106 (1981-09-01), Parietti
patent: 4813394 (1989-03-01), St. Clair
Kamen Noah P.
Thompson Daniel V.
Ward David P.
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