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:
May. 16, 2017
Filed:
Oct. 10, 2011
James M. Cleeves, Redwood City, CA (US);
Simon David Jackson, Redwood City, CA (US);
Michael Hawkes, San Francisco, CA (US);
Michael A. Willcox, Redwood City, CA (US);
James M. Cleeves, Redwood City, CA (US);
Simon David Jackson, Redwood City, CA (US);
Michael Hawkes, San Francisco, CA (US);
Michael A. Willcox, Redwood City, CA (US);
PINNACLE ENGINES, INC., San Carlos, CA (US);
Abstract
An internal combustion engine can include a piston moving in a cylinder and a junk head disposed opposite the piston head in the cylinder. The junk head can optionally be moveable between a higher compression ratio position closer to a top dead center of the piston and a lower compression ratio position further from the top dead center position of the piston. At least one intake port can deliver a fluid comprising inlet air to a combustion chamber within the cylinder. Combustion gases can be directed out of the combustion volume through at least one exhaust port. One or both of the intake port and the exhaust port can be opened and closed by operation of a sleeve valve that at least partially encircles the piston. Related articles, systems, and methods are described.