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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.:

US 10415659 B1

PDFFull Text
Date of Patent:
Sep. 17, 2019

Filed:

Jul. 19, 2016

Clutch apparatus and control method for clutch apparatus

Applicant:

Jtekt Corporation, Osaka-shi, JP;

Inventors:

Tomohiro Nozu, Anjo, JP;

Akira Kodama, Chiryu, JP;

Masaki Mita, Chiryu, JP;

Shotaro Niimi, Kariya, JP;

Assignee:

JTEKT CORPORATION, Osaka-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jacob S Scott

Assistant Examiner:

Michael E Butler

Int. Cl.
CPC ...
F16D 48/06 (2006.01); F16D 13/52 (2006.01); F16D 48/02 (2006.01); F16D 25/0638 (2006.01); B60K 17/02 (2006.01); B60K 17/35 (2006.01); B60K 23/08 (2006.01); F16D 11/14 (2006.01); F16D 11/00 (2006.01); F16D 121/04 (2012.01);
U.S. Cl.
CPC ...
F16D 48/066 (2013.01); B60K 17/02 (2013.01); B60K 17/35 (2013.01); B60K 17/3515 (2013.01); B60K 23/0808 (2013.01); F16D 13/52 (2013.01); F16D 25/0638 (2013.01); F16D 25/14 (2013.01); F16D 48/02 (2013.01); B60Y 2400/424 (2013.01); F16D 11/14 (2013.01); F16D 2011/002 (2013.01); F16D 2048/0257 (2013.01); F16D 2121/04 (2013.01); F16D 2500/1045 (2013.01); F16D 2500/10431 (2013.01); F16D 2500/10462 (2013.01); F16D 2500/1107 (2013.01); F16D 2500/3022 (2013.01); F16D 2500/3056 (2013.01); F16D 2500/3168 (2013.01); F16D 2500/502 (2013.01); F16D 2500/7043 (2013.01); F16D 2500/70406 (2013.01);
Abstract

A driving-force transmitting apparatus includes first and second friction clutches, a piston that presses the first and second friction clutches, a hydraulic pump that feeds hydraulic oil to a cylinder chamber in the piston, an electric motor that drives the hydraulic pump, and a control apparatus that controls the electric motor to adjust the discharge pressure of the hydraulic pump. The control apparatus has a feedback control apparatus that controls the electric motor using a correction value based on a deviation between a target value and an actual value of the discharge pressure of the hydraulic pump, a hydraulic-oil temperature estimating apparatus that estimates a temperature of hydraulic oil, and a gain adjusting apparatus that changes a correction amount for feedback control in accordance with the estimated temperature of the hydraulic oil.

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