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. 26, 1999
Filed:
Sep. 10, 1997
Wengang Dai, Canton, MI (US);
George Carver Davis, Ypsilanti, MI (US);
Michael Moses Schechter, Farmington Hills, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
A method of operating a four stroke, spark ignition, high compression ratio, internal combustion engine including at least one intake valve (30), exhaust valve (32) and charging valve (36) per cylinder (16). Each of the valves is actuable by a variable timing mechanism (50), which is controlled by an on-board computer (82) that varies the timing of valve opening and closing depending upon engine operating conditions. Each charging valve port (34) leads to an auxiliary chamber (40) having geometry to cause a swirling motion of the charge entering the chamber and surrounded by a cooling jacket (42) to cool the charge as it swirls before being released back into the cylinder during the next engine cycle.