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:
Nov. 30, 1999
Filed:
Apr. 02, 1998
Applicant:
Inventors:
Assignee:
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9017 ; 123 9015 ;
Abstract
In a variable timing mechanism, valve lifting characteristics are changed to meet the engine power output characteristics when the timing of valve operation is changed. The variable timing mechanism is provided for the side of at least one of an intake and an exhaust valve so that, when a running condition of an internal combustion engine is changed from a low engine speed to a high engine speed, a duration of valve opening of at least one of the intake and the exhaust valve is changed to increase an overlap period of the intake and the exhaust valve at the beginning of the changes in the running condition of the engine.