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. 13, 2005
Filed:
Jun. 28, 2004
Ing. Peter Hofbauer, West Bloomfield, MI (US);
Lixin Peng, Rochester Hills, MI (US);
Adrain Tusinean, Windsor, CA;
Kevin Fuqua, Clarkston, MI (US);
Ing. Peter Hofbauer, West Bloomfield, MI (US);
Lixin Peng, Rochester Hills, MI (US);
Adrain Tusinean, Windsor, CA;
Kevin Fuqua, Clarkston, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. An outer piston assembly includes a pair of pistons, one each operatively located, in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. Each outer piston cooperates with an integrated scavenge pump in order to compress the charge air, thus significantly increasing the air charge density into the engine cylinders for each stroke of the engine.