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:
Mar. 02, 2010
Filed:
May. 11, 2006
Takeshi Fujii, Hyogo, JP;
Takeshi Fujii, Hyogo, JP;
Fujitsu Ten Limited, Kobe-Shi, JP;
Abstract
A variable valve control apparatus includes a variable valve timing mechanism that adjusts an actuation timing of an intake valve and an actuation timing of an exhaust valve; a variable working angle mechanism that adjusts a working angle of the intake valve; a variable valve control section that controls at least one of the variable valve timing mechanism and the variable working angle mechanism based on an engine load; and a negative pressure suppression control section. The negative pressure suppression control section suppresses a negative pressure of an inside of a cylinder when the negative pressure suppression control section determines that both of the intake valve and the exhaust valve close after an intake top dead center, based on opening conditions of the intake valve and the exhaust valve.