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:
May. 01, 2018
Filed:
Feb. 16, 2015
Jatco Ltd, Fuji-shi, Shizuoka, JP;
Yasuyuki Hashimoto, Atsugi, JP;
Seiichiro Takahashi, Isehara, JP;
Tomoaki Honma, Isehara, JP;
Tomoaki Kabe, Nagoya, JP;
Nobuhiko Morifuji, Okazaki, JP;
Nobuhide Kato, Kariya, JP;
Hitoshi Goka, Miyoshi, JP;
Koichi Sugita, Okazaki, JP;
JATCO Ltd, Fuji-Shi, JP;
Abstract
A hydraulic control device controls hydraulic pressure supplied to a continuously variable transmission. The hydraulic control device includes a pressure regulating valve, a solenoid valve configured to control the pilot pressure, line pressure control means, and hydraulic control means. The pressure regulating valve includes an input port to which line pressure is input, an output port configured to supply an oil chamber of a second pulley with a second pulley pressure, a drain port configured to discharge the second pulley pressure from the oil chamber, and a spool moving according to pilot pressure to regulate the second pulley pressure. The line pressure control means is configured to control the line pressure on the basis of the second pulley pressure and first pulley pressure of first pulley. The hydraulic control means is configured to temporarily change the pilot pressure from set pressure to configure the line pressure identical to the second pulley pressure.