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. 25, 2012
Filed:
Mar. 12, 2009
Koichiro Muta, Okazaki, JP;
Hiroyuki Ogura, Toyoake, JP;
Naofumi Magarida, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In a hybrid vehicle in which a fixed speed change mode can be realized by the locking of a rotational element, the mislocking of the rotational element is prevented. A hybrid drive apparatus which has an engine, a MGand a MGand which functions as a power unit of a hybrid vehicle is provided with a brake mechanism of a cam-lock type which can control the MGin a lock state and a non-lock state by changing the state of a sun gear between the lock state and the non-lock state. In mislocking prevention control, an ECU calculates MGangular acceleration Dωg, which is the absolute value of angular acceleration of the motor generator MGon the basis of a MGrotational speed Ngmand judges that the sun gear Sis in a mislocking state if the MGangular acceleration Dωg is greater than a criterion value Dωgth.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile