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:
Sep. 05, 1978
Filed:
Dec. 22, 1976
Gerald J Herman, Farmington Hills, MI (US);
Williams Research Corporation, Walled Lake, MI (US);
Abstract
An engine speed governor which utilizes the fuel mass itself as a control element, combined with fuel pressure regulation and orifice pressure drop. The fuel is fed through an orifice and then inwardly through radial slots in a shaft rotating at a speed proportional to engine speed, the rotating columns of fuel in these slots being subjected to centrifugal force and opposing external supply pressure. Equilibrium is achieved when the inlet pressure equals the sum of orifice and slot pressure drops. In the illustrated embodiment, fuel pressure is supplied by pressurizing a fuel tank with compressor discharge air, and thus pressurizing fuel in a manner compensating for slightly lower governed speed when fuel demands are higher. The illustrated embodiment also includes multiple speed selection achieved by selectively opening a plurality of bleed orifices leading from the compressor line to the fuel tank.