Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1978-03-27
1980-12-09
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
123511, 261 36A, 137115, F02M 3900
Patent
active
042378494
ABSTRACT:
A pressure regulator for use in a fuel supply system such as might be found in a vehicle where fuel from a fuel tank is conveyed by a fuel pump to a carburetor is disclosed. The pressure regulator maintains the fuel pressure at the fuel pump outlet at a preferred level relative to atmospheric pressure and includes a regulator housing with a fuel inlet coupled to the fuel pump outlet and a fuel outlet coupled to the fuel system upstream of the fuel pump. A first pressure responsive surface such as a piston or diaphragm surface within the regulator is exposed to and actuable by fuel pressure at the regulator fuel inlet and a second pressure responsive surface having an area greater than the first surface is actuable by ambient atmospheric pressure with the two surfaces being coupled for conjoint movement to a position which adjusts fuel flow between the regulator inlet and outlet so long as the ratio of fuel pressure to atmospheric pressure is less than a preselected value while movement from that position to allow fuel flow between the inlet and outlet occurs when the ratio of fuel pressure to atmospheric pressure exceeds the preselected value. Typically the preselected value is numerically the ratio of the area of the second atmospheric pressure actuated surface to the area of the first or fuel actuated surface.
REFERENCES:
patent: 2182933 (1939-12-01), Schimanek
patent: 2714501 (1955-08-01), Sellers
patent: 2737167 (1956-03-01), Dickey
patent: 3061286 (1962-10-01), Mennesson
patent: 3302935 (1967-02-01), York, Jr.
patent: 3520320 (1970-07-01), Crawford et al.
patent: 3955396 (1976-05-01), Carrieri
Jeffers Albert L.
Moy Magdalen
Myhre Charles J.
Rickert Roger M.
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