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. 16, 2010
Filed:
Aug. 30, 2006
Hiroshi Enomoto, Toyota, JP;
Hiroshi Enomoto, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A valve control apparatus of a diesel engine () is provided with an EGR valve (), which is provided in an EGR passage () of the engine () and varies the flow rate of exhaust gas flowing through a passage () by carrying out an opening and closing motion, and an actuator (), which executes a sticking avoiding operation for dissolving or preventing a sticking of a valve () by causing the valve () to move to and fro so as to open and close the valve () by a predetermined moving amount respectively in one direction and the other direction near a full-close position of the valve (). The apparatus inhibits the sticking avoiding operation by the actuator () when an ignition OFF operation is carried out without starting an operation of the engine () after an ignition ON operation is carried out. As a result, it is possible to prevent a useless valve opening and closing motion and achieve power saving.