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. 08, 2009
Filed:
Oct. 30, 2007
Alvin H. Berger, Brownstown, MI (US);
Alvin H. Berger, Brownstown, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A synchronized, dual crankshaft engine () uses a phase-shifting device () to alter the angular position of one crankshaft () relative to the other crankshaft () for dynamically varying the engine's developed compression ratio. Each crankshaft () drives a respective connecting rod () which, in turn, reciprocates a piston () in a cylinder (). The center lines (C, D) of each cylinder () are skewed relative to each other so that the pistons () converge toward a common combustion chamber formed under a common cylinder head (). Movable exhaust valves () are located above the piston () whose phase shifted orientation is retarded or lagging dead center conditions, whereas movable intake valves () are located above the piston () that is leading or advanced in its phase displacement relative to dead center conditions.