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:
Oct. 15, 2013
Filed:
Apr. 26, 2010
Rainer J. Rothbauer, San Antonio, TX (US);
Charles E. Roberts, Jr., Helotes, TX (US);
Thomas W. Ryan, Iii, San Antonio, TX (US);
Rainer J. Rothbauer, San Antonio, TX (US);
Charles E. Roberts, Jr., Helotes, TX (US);
Thomas W. Ryan, III, San Antonio, TX (US);
Southwest Research Institute, San Antonio, TX (US);
Abstract
A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface and a dome that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl and the dome each including at least one surface feature as a target for the fuel spray. The surface feature may protrude from the inner surface of the bowl or may be recessed into the inner surface. Such surface features may reduce soot and improve fuel-air mixing.