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. 25, 2013
Filed:
Apr. 01, 2010
Robert D. Straub, Lowell, MI (US);
Robert D. Straub, Lowell, MI (US);
Abstract
An engine assembly may include an engine structure, a piston, and a direct injection fuel system. The engine structure may define a cylinder bore and an intake port in communication with the cylinder bore and adapted to mitigate intake air swirl within the cylinder bore. The piston may be disposed within the cylinder bore for a reciprocal stroke between a top dead center position and a bottom dead center position. The piston may define an annular recess portion in an axial end surface thereof. The direct injection fuel system may include a fuel injector that provides a fuel spray to a combustion chamber defined by the piston and the cylinder bore. The fuel spray may define an annular plume intersecting the annular recess portion in the piston when the piston is in an injection position within twenty percent of the reciprocal stroke from the top dead center position.