Fuel pumping apparatus

Details Fuel pumping apparatus Fuel pumping apparatus

1978-12-20

1980-11-11

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Fuel injection system

123495, 417462, F02M 3900, F04B 2900

Patent

active

042326443

ABSTRACT:
A fuel injection pumping apparatus includes a delivery valve interposed between the outlet of an injection pump and a plurality of outlet ports to which fuel is delivered in turn at successive delivery strokes of the injection pump. Communication with the outlet ports is established through a delivery passage and in order to minimize the loading of the spring which biases the delivery valve to the closed position, a branch passage is provided and which opens to an outlet port in advance of the communication with that outlet port of the main delivery passage. As a result some fuel flows through the branch passage the size of which in relation to the outlet port is such that fuel will be gradually diverted by way of the delivery valve and the main delivery passage during delivery of fuel. As a result the movement of the valve member of the delivery valve is less rapid and the stress on the spring is reduced.

REFERENCES:
patent: 2465138 (1949-03-01), Van-Tuyl
patent: 3489093 (1970-01-01), Thornber
patent: 3918853 (1975-11-01), Drori
patent: 4146003 (1979-03-01), Drori

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