Bypass restrictor for distribution valve

Details Bypass restrictor for distribution valve Bypass restrictor for distribution valve

1984-03-27

1985-12-10

Feinberg, Craig R.

Internal-combustion engines

Charge forming device

Fuel injection system

123459, F02M 4106

Patent

active

045572372

ABSTRACT:
A bypass restrictor arrangement is provided for use in a distribution valve to control the rate of bypass flow thus effectively reducing cavitation in a fuel system at the end of the injection stroke. Others primarily rely on operation at low system pressure or they rely on a relief valve to maintain a predetermined pressure level in the bypass passage. In the subject arrangement, an orifice is located in a bypass port of a rotor prior to the bypass fluid communicating with a low pressure chamber. Furthermore, the low pressure chamber is maintained at a predetermined pressure level by a relief valve. This arrangement ensures that the rate of fuel flow during bypass is controlled while also flushing and/or controlling the size of any entrained air bubbles or voids thus increasing the efficiency of the fuel system.

REFERENCES:
patent: 2815741 (1957-12-01), Fancher et al.
patent: 3485225 (1969-12-01), Bailey et al.
patent: 4376432 (1983-03-01), Davis
patent: 4461259 (1984-07-01), Roca-Nierga
patent: 4463727 (1984-08-01), Babitzka et al.

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