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. 21, 2016
Filed:
Feb. 13, 2014
Nissan Motor Co., Ltd., Kanagawa, JP;
Toru Urasawa, Kanagawa, JP;
Yutaka Kawamoto, Kanagawa, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
A shift control device for shift controlling an automatic transmission in a powertrain drivingly connecting a power source, a hydraulic transmission element, and an automatic transmission in the mentioned order, has a hydraulic transmission element required output calculator that calculates a required output to be output from the hydraulic transmission element to the automatic transmission based on the output of the power source obtained from the slip condition between the input and output elements of the hydraulic transmission element and a total efficiency of the hydraulic transmission element, and a hydraulic transmission element total efficiency calculator that calculates, for each output rotation speed of the hydraulic transmission element, a speed ratio and a torque ratio between the input and output elements of the hydraulic transmission element, each being required for achieving the calculated hydraulic transmission element required output.