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. 19, 2013
Filed:
Jun. 12, 2012
Arata Nakamura, Ebina, JP;
Masaki Watanabe, Machida, JP;
Kazuya Murota, Tokyo, JP;
Daisuke Kozuma, Machida, JP;
Toshinori Sasaki, Atsugi, JP;
Arata Nakamura, Ebina, JP;
Masaki Watanabe, Machida, JP;
Kazuya Murota, Tokyo, JP;
Daisuke Kozuma, Machida, JP;
Toshinori Sasaki, Atsugi, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
A control device for automatic transmission includes a flow control mechanism for introducing a part of hydraulic oil discharged from a mechanical oil pump into the mechanical oil pump when a differential pressure between an upstream side and a downstream side of a narrow part provided in a discharge passage in which hydraulic oil discharged from the mechanical oil pump flows becomes larger than a predetermined value. Air mixed into the hydraulic oil is compressed by increasing a line pressure as a differential rotation speed increases when oil temperature of the hydraulic oil is equal to or higher than a predetermined oil temperature and an engine torque is equal to or lower than a predetermined engine torque.