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:
Jan. 30, 2018
Filed:
Dec. 24, 2014
Aisin Aw Co., Ltd., Anjo-shi, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hiroyuki Kutsubo, Nagoya, JP;
Nobuyuki Hirai, Anjo, JP;
Masamichi Yamaguchi, Anjo, JP;
Yoshimitsu Hyodo, Nishio, JP;
Kenichi Tsuchida, Nishio, JP;
Terufumi Miyazaki, Toyota, JP;
Youhei Habata, Toyota, JP;
Yoshio Hasegawa, Chiryu, JP;
AISIN AW CO., LTD., Anjo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A jump shift of an automatic transmission with multiple shift speeds such as, e.g., ten forward speeds involves operation of many engagement elements. The shifting operation for the jump shift is therefore complicated, making it difficult for the automatic transmission to respond quickly. After shifting to the seventh speed as a direct coupling speed is completed by engaging three clutches C, C, C, the remaining other clutch Cis also engaged at the seventh speed. In the case of a jump shift, e.g., a shift from the seventh speed to the fifth speed, shifting to the fifth speed is completed by disengaging the clutch Cand performing control to disengage the clutch Cand to engage a brake Bwith the remaining other clutch Ckept in the engaged state. This facilitates the shifting operation from the direct coupling speed and allows the automatic transmission to respond quickly.