Piezoelectric fuel injector valve

Details Piezoelectric fuel injector valve Piezoelectric fuel injector valve

1974-09-27

1976-12-07

Burns, Wendell E.

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

123 32AE, 123 32JV, B05B 130

Patent

active

039958132

ABSTRACT:
An electrically operated valve in which the valve operating means is controlled in its opening movement by a piezoelectric element and in which the rate of such movement is increased by the cooperative movement of a vaulted spring washer. The expansion or contraction of the piezoelectric element provides a lift force to the valve operating means and also a force against a vaulted spring washer to push the washer surface past a point of instability. Similarly, on closure of the valve, a sudden closing force is exerted against said means by the return snapping, or vaulting, of said washer. Preferably, a hydraulic or mechanical amplification of the stroke of the piezoelectric element is included to provide an exceedingly rapid mode of operation. The valve is particularly advantageous to control the multiple and discreet injections of fuel into an internal combustion engine.

REFERENCES:
patent: 3418980 (1968-12-01), Benson
patent: 3501099 (1970-03-01), Benson
patent: 3598506 (1971-08-01), O'Neill
patent: 3704833 (1972-12-01), Wheat
patent: 3830204 (1974-08-01), McAlister

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