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:
Jun. 12, 2018
Filed:
Oct. 23, 2015
Jatco Ltd, Fuji-shi, Shizuoka, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Seiichiro Takahashi, Isehara, JP;
Tomoaki Honma, Isehara, JP;
Yuta Suzuki, Sagamihara, JP;
Itaru Shinohara, Atsugi, JP;
JATCO Ltd, Fuji-Shi, JP;
NISSAN MOTOR CO., LTD., Yokohama-Shi, JP;
Abstract
A continuously variable transmission (), wherein pressure equalization control is performed to make line pressure (PL) equal to secondary pressure (Psec) when prescribed start conditions are satisfied. During pressure equalization control, a secondary pressure indicated value (Psec_co) is raised by a prescribed amount (S), then a line pressure indicated value (PL_co) is gradually decreased (S). If determination is made that line pressure is the same as the secondary pressure after secondary actual pressure (Psec) is lowered (S), then the line pressure is controlled so that the secondary actual pressure (Psec) becomes the secondary pressure indicated value (Psec_co) (S). At the start of pressure equalization control, if the difference (ΔPsec) found by subtracting the secondary pressure indicated value from the secondary actual value is negative (S), then a primary pressure indicated value is corrected on the basis of the difference (S).