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. 24, 2005
Filed:
Apr. 23, 2003
Applicants:
Masayuki Saruwatari, Atsugi, JP;
Junichi Furuya, Atsugi, JP;
Toru Kitayama, Atsugi, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L001/34 ;
U.S. Cl.
CPC ...
Abstract
In a low rotation region of an engine, valve timing of two intake valves is advanced and also one of two exhaust valves is driven by means of a cam with valve lift lower than that of the other exhaust valve, to thereby set a valve overlap period within which only one of the two exhaust valves is opened.