The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 1980
Filed:
Oct. 02, 1978
William G Wolber, Southfield, MI (US);
The Bendix Corporation, Southfield, MI (US);
Abstract
A self-standardizing pressure sensor (60) for use with an electronic fuel control system of an internal combustion engine. The sensor (60) includes a body (100) having first and second external ports (120, 122) for sensing manifold absolute pressure (MAP) and ambient atmospheric pressure (AAP), respectively. An internal valve (110) within the body (100) is biased to normally register with the MAP port (120), but is actuatable to register with the AAP port (122). The valve (110) includes an internal passage (126) which communicates whichever of the ports (120, 122) is selected to an internal pressure chamber. One wall of the chamber is defined by a flexural diaphragm (144). Flexing of the diaphragm is transmitted to an electromechanical transducer (172) which produces an output signal representative of the pressure in the internal chamber. A normal force bias (146) is applied to the diaphragm (144), but is temporarily removed by actuation of the internal valve (110) to effectively unload the diaphragm (144) to permit standardization of the sensor (60).