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:
Apr. 01, 2014
Filed:
Jun. 08, 2009
Hideo Kobayashi, Mishima, JP;
Toshihisa Sugiyama, Gotemba, JP;
Kenichi Yamada, Yaizu, JP;
Shusaku Sugamoto, Susono, JP;
Bunki Kawano, Shizuoka-ken, JP;
Hideo Kobayashi, Mishima, JP;
Toshihisa Sugiyama, Gotemba, JP;
Kenichi Yamada, Yaizu, JP;
Shusaku Sugamoto, Susono, JP;
Bunki Kawano, Shizuoka-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A hydraulic control device is equipped with an oil jet that injects oil to a piston, an oil gallery through which oil injected by the oil jet and oil supplied to a lubrication part of an engine pass, an oil pump that pumps oil to the oil gallery, and a switching valve that is provided on an oil jet passage connecting the oil gallery and the oil jet together and leads oil supplied from the oil gallery to either the oil jet or an oil pan disposed at an upstream side of the oil pump. An ECU controls the switching valve on the basis of an engine speed and an engine cooling water temperature.