Method for supplying an internal combustion engine with fuel and

Details Method for supplying an internal combustion engine with fuel and Method for supplying an internal combustion engine with fuel and

1982-09-21

1984-12-25

Cross, Ethel R.

Internal-combustion engines

Charge forming device

Gaseous fuel and air mixer

123454, 123452, 48180R, F02M 3900

Patent

active

044897006

ABSTRACT:
A method for supplying an internal combustion engine with liquefied petroleum gas (LPG) and a fuel supply system for the supplying the LPG into the intake manifold of an internal combustion engine are proposed. The fuel supply system includes a pump, which pumps LPG from an LPG tank at a predetermined pressure above its vapor pressure into a supply line, which leads via a heat exchanger to a metering valve. The metering valve has a metering piston, which is axially displaceable in a guide bore by means of an air flow rate meter and thereby opens a metering opening to a greater or lesser extent. Downstream of the metering valve, the metered LPG quantity flows via a regulating valve and through the heat exchanger, in which it at least partially evaporates and cools the LPG flowing to the metering valve. The supply of the metered LPG may be effected via a nozzle into the intake manifold upstream of a throttle valve. LPG serves as the restoring force exerted on the metering piston, the pressure of the LPG being variable in a control pressure line by means of a pressure control valve for the purpose of adapting the mixture in accordance with operating characteristics of the engine.

REFERENCES:
patent: 2821843 (1958-02-01), Mengelkamp et al.
patent: 3184295 (1965-05-01), Baverstock
patent: 4391252 (1983-07-01), Jaggle et al.

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