G - Physics – 01 – L
Patent
G - Physics
01
L
73/129
G01L 19/00 (2006.01) G01L 9/00 (2006.01)
Patent
CA 1130610
ABSTRACT A self-standardizing pressure sensor for use with an electronic fuel control system of an internal combustion engine. The sensor includes a body having first and second external ports for sensing manifold absolute pressure and ambient atmospheric pressure, respectively. An internal valve within the body is biased to normally register with the MAP port, but is actuatable to register with the AAP port, The valve in- cludes an internal passage which communicates whichever of the ports is selected to an internal pressure chamber. One wall of the chamber is defined by a flexural diaphragm. Flexing of the diaphragm is transmitted to an electromechanical transducer which produces an output signal repre- sentative of the pressure in the internal chamber. A normal force bias is applied to the diaphragm, but is temporarily removed by actuation of the internal valve to effectively unload the diaphragm to permit standardization of the sensor.
336806
Bendix Corporation (the)
Macrae & Co.
LandOfFree
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