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:
Jan. 08, 2013
Filed:
Nov. 03, 2011
Zheng Xu, Canton, MI (US);
Jianwen James Yi, Canton, MI (US);
Steven Wooldridge, Saline, MI (US);
David Bruce Reiche, Livonia, MI (US);
Neal James Corey, Canton, MI (US);
Stephen George Russ, Canton, MI (US);
Steven Paul Penkevich, New Hudson, MI (US);
Claudia Olivia Iyer, Canton, MI (US);
Zheng Xu, Canton, MI (US);
Jianwen James Yi, Canton, MI (US);
Steven Wooldridge, Saline, MI (US);
David Bruce Reiche, Livonia, MI (US);
Neal James Corey, Canton, MI (US);
Stephen George Russ, Canton, MI (US);
Steven Paul Penkevich, New Hudson, MI (US);
Claudia Olivia Iyer, Canton, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method of forming a bowl in a top surface of a piston for an internal combustion engine includes machining the top surface of the piston to form a spherical depression in the top surface wherein the top surface comprises a dome prior to the machining and a center of the bowl is displaced from a center of the piston by at least one-quarter of a diameter of the piston. In one embodiment, the method includes machining recesses in the top surface aligned, respectively, with intake valves, an exhaust valve, and spark plug when installed. Because the bowl is smooth and shallow, the surface area of the combustion chamber is less than with a deeper bowl of complicated shape. Lowering surface area in the combustion chamber leads to improved fuel economy.