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:
Apr. 14, 2015
Filed:
Nov. 18, 2011
Takaaki Tokura, Nagoya, JP;
Masato Kaigawa, Toyota, JP;
Takaaki Tokura, Nagoya, JP;
Masato Kaigawa, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A control device for a drive device of a vehicle which is provided with an engine, a supercharger to raise a pressure of intake air introduced in said engine, an accelerating member manually operable by an operator of the vehicle to accelerate the vehicle, and an automatic transmission constituting a portion of a power transmitting path between said engine and drive wheels, and wherein said engine is placed in a first operating state in which said supercharger is operated, or a second operating state in which an operation of said supercharger is restricted as compared with that in said first operating state, said control device comprising: a speed ratio selection control portion configured to implement a speed ratio selection control to change a method of selecting a speed ratio of said automatic transmission depending upon a rate of increase of an operation amount of said accelerating member, where said engine will be placed in said first operating state if said automatic transmission is shifted to select a first speed ratio value according to a predetermined shifting map while said engine is placed in said second operating state, said speed ratio selection control portion implementing said speed ratio selection control to shift said automatic transmission to select said first speed ratio value when the rate of increase of the operation amount of said accelerating member is relatively low, and to shift said automatic transmission to select a second speed ratio value at which said engine is kept in said second operating state and which is higher than said first speed ratio value, when the rate of increase of the operation amount of said accelerating member is relatively high.