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:
Jun. 16, 1992
Filed:
Nov. 28, 1990
Aladar O Simko, Dearborn Heights, MI (US);
Michael M Schechter, Farmington Hills, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
A modular control mechanism for shifting the phase of a camshaft relative to a crankshaft in an internal combustion engine, accomplished by shifting the angular position of the camshaft relative to the crankshaft. The mechanism comprising two hydraulic cylindrical housings attached to either the camshaft flange or the camshaft driving sprocket, and plungers within the cylindrical housings attached to the other flange to form a rotational hydraulic coupling. The hydraulic cylinders providing a pair of cavities which vary in displacement as the two flanges are rotated relative to one another. A control apparatus regulating the flow of fluid between the hydraulic cylindrical housings, thus controlling the phase shift between the crankshaft and camshaft. The control device using the energy produced by the reaction torque pulses on the camshaft, and resultant pressure pulses in the cavities, thus creating a self-actuating system. The control apparatus consisting of one of three alternate means for precisely controlling the flow of fluid, thus allowing for a modulated self-actuating mechanism.