Fuel injection apparatus and system

Details Fuel injection apparatus and system Fuel injection apparatus and system

1983-12-27

1985-06-25

Lall, P. S.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

251129, 251141, 239585, 123472, F02M 700

Patent

active

045247439

ABSTRACT:
A fuel metering apparatus is shown as having a throttle body with an induction passage therethrough and a throttle valve for controlling flow through the induction passage, a fuel-air mixture discharge member is situated generally in the induction passage downstream of the throttle valve, an air passage communicates between a source of air and the fuel-air mixture discharge member, the air passage is shown as also including a flow restrictor therein which provides for sonic flow therethrough, and a fuel metering valving assembly having a ball valve member is effective for metering liquid fuel as at a superatmospheric pressure and delivering such metered liquid fuel as into the air passage upstream of the flow restrictor thereby causing the thusly metered liquid fuel and air to pass through the sonic flow restrictor before being discharged into the induction passage by the fuel-air mixture discharge member, the ball valve member at least partly receives at least one resilient member which urges the ball valve member toward a seated condition.

REFERENCES:
patent: 4218021 (1980-08-01), Palma
patent: 4356980 (1982-11-01), Krauss
patent: 4394974 (1983-07-01), Saito et al.
patent: 4395989 (1983-08-01), Eshelman et al.
patent: 4406266 (1983-09-01), Kiesling
patent: 4421278 (1983-12-01), Kienzle et al.

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