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:
Dec. 17, 2002
Filed:
Oct. 03, 2000
Masanori Ohtake, Susono, JP;
Akira Murakami, Susono, JP;
Shinichi Kojima, Susono, JP;
Hisanori Nomoto, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In a control system for a hybrid drive unit, in accordance with applied/released states of engagement elements, there can be set: a forward running range for a forward run by transmitting an input torque to an output member, a backward running range for a backward run by transmitting an input torque to the output member, and a stop range capable of driving one of the power sources by the other. The control system includes a range switching valve activated in response to the individual set ranges for switching and outputting an initial pressure for applying the engagement elements, to a plurality of passages, and adapted, when the stop range is set, to output the hydraulic pressure to the engagement element for establishing a torque transmission passage from one of the power sources to the other and to block the feed of the initial pressure to the engagement element for establishing, when applied, the torque at the output member.