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:
Sep. 22, 2009
Filed:
Dec. 13, 2007
Martin W. Dirker, Bourne, GB;
Martin W. Dirker, Bourne, GB;
Perkins Engines Company Limited, Peterborough, GB;
Abstract
A method for providing a mixture of inlet air and exhaust gas in a cylinder of an internal combustion engine is disclosed. Fluid flow between the cylinder and a cylinder head associated therewith is controlled by at least one rotary valve accommodated in the cylinder head. The method includes rotating the at least one rotary valve to allow a fluid flow between the cylinder and the cylinder head in a first direction and to allow a fluid flow between the cylinder and the cylinder head in a second direction, opposite the first direction, wherein the fluid flow in the first direction and the fluid flow in the second direction are allowed during a single combustion cycle of the engine.