Spill valve for a fluid control system

Internal-combustion engines – Charge forming device – With fuel pump

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Details

123506, 137883, F02M 3900

Patent

active

042167523

ABSTRACT:
A spill valve (40) for use in a fluid control system (10), such as an automotive fuel injection system, where the mass flux of a pressurized fluid through a line (26) is to be controlled in either time or quantity or both. The spill valve (40) is connected between a fluid chamber (18) containing pressurized fluid and drain. When the spill valve (40) is open, the pressurized fluid in the chamber (18) is vented to drain; and when closed, the fluid is permitted to flow normally. The present spill valve (40) includes a valve body (100, 102, 104) having spill inlet and outlet ports (130, 132). A spill conduit (70) is disposed in the valve body and has first and second parallel spill paths therethrough to communicate the spill inlet and outlet ports (130, 132). An elongate valve closure element (50) is disposed within the spill conduit (70) to control the opening and closing of the first and second spill paths. The valve closure element (50) is actuated at either of its ends (54, 56) by a pair of rotary solenoid relays (80). The elongate valve closure element (50) has a central spindle section (52) that can undergo torsion to allow either of the pair of rotary solenoid relays (80) to act independently in closing off the first or second spill paths. The torsion in the central spindle section (52) stores potential energy that accelerates the transition of the valve from a closed state to an open state.

REFERENCES:
patent: 135220 (1873-01-01), Harang
patent: 2852308 (1958-09-01), Whitson
patent: 3719435 (1973-03-01), Eheim
patent: 3851635 (1974-12-01), Murtin et al.
patent: 3859972 (1975-01-01), Watson et al.
patent: 3880130 (1975-04-01), Hecht

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