Internal-combustion engines – Charge forming device – Combined liquid and gaseous fuel
Patent
1984-01-11
1985-04-09
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Combined liquid and gaseous fuel
123453, 123454, F02M 2102, F02M 3900
Patent
active
045094799
ABSTRACT:
An apparatus for the air-injection of liquid gas into the intake tube of an internal combustion engine. The apparatus includes a vaporizer pressure regulating valve, downstream of which a metering valve having a metering piston is proposed, which being movable in a guide bore opens a metering opening to a greater or lesser extent. The adjustment of the metering piston is effected in accordance with the quantity of air aspirated by the engine as determined by an air flow rate meter, as a result of which a quantity of liquid gas corresponding to the aspirated air quantity can be metered. The mixture of liquid gas and air can be influenced by a control pressure prevailing in a control chamber at the metering piston, and this control pressure is influenced by a control pressure regulating valve and the movable valve element of which is engaged on one side by the intake tube pressure upstream of the air flow rate meter and on the other side, coupled via a throttle by the control pressure and a regulating spring and to the valve seat of which a negative-pressure line leads from the intake tube from downstream of a throttle valve.
REFERENCES:
patent: 1253623 (1918-01-01), Maxwell
patent: 2675793 (1954-04-01), Ziege
patent: 3184295 (1965-05-01), Baverstock
patent: 4391252 (1983-07-01), Jaggle
Cross E. Rollins
Greigg Edwin E.
Robert & Bosch GmbH
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