Fuel metering apparatus with multi-stage fuel metering valve ass

Details Fuel metering apparatus with multi-stage fuel metering valve ass Fuel metering apparatus with multi-stage fuel metering valve ass

1982-03-04

1985-04-02

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

123458, 123472, 123530, 239585, 251285, 251137, F02M 5106, B05B 130

Patent

active

045080917

ABSTRACT:
A fuel metering apparatus is shown as having a throttle body with induction passage means therethrough and a throttle valve for controlling flow through the induction passage means; fuel under superatmospheric pressure is metered through a multi-stage fuel metering valve assembly and such metered fuel is supplied as to the induction passage means; the multi-stage metering valve assembly is shown as having a valve member with a step-like surface reciprocatingly cooperating with a metering orifice of fixed effective flow area so that during a first range of metered fuel flow a first portion of the step-like surface is effective for cooperating with the metering orifice in determining the rate of metered fuel flow while during a second range of metered fuel flow a second portion of the step-like surface is effective for cooperating with the metering orifice in determining the rate of metered fuel flow.

REFERENCES:
patent: 1822668 (1931-09-01), Protzeller
patent: 2637407 (1953-05-01), Burk
patent: 2769943 (1956-11-01), Mathews
patent: 3079947 (1963-03-01), Hunt
patent: 3942485 (1976-03-01), Suda
patent: 4007880 (1977-02-01), Haius
patent: 4335693 (1982-06-01), Cowles
patent: 4342443 (1982-08-01), Wakeman

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