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. 22, 2004
Filed:
Nov. 30, 2001
Masakiyo Kojima, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
The shift control of a transmission is performed on different bases depending on whether an engine is connected so as to be passively turned, or is disconnected. During the disengaged state, the shift control is performed so that the power generation efficiency of a motor-generator becomes maximized under a predetermined condition. During the engaged state, the shift control is performed so that the turning resistance of the engine becomes minimized under a predetermined condition. Therefore, during running of the vehicle, a battery can be charged through the regeneration control of the motor-generator. Even when the regeneration control is performed while the passive turning of the engine is allowed, good electric power generation efficiency can be achieved.