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. 16, 2020
Filed:
Apr. 27, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Takahito Endo, Shizuoka-ken, JP;
Hideaki Komada, Gotemba, JP;
Tatsuya Imamura, Okazaki, JP;
Kensei Hata, Shizuoka-ken, JP;
Akiko Nishimine, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A drive unit for a hybrid vehicle capable of improvement of fuel efficiency during HV running is provided. The drive unit includes an engine, a first motor, a second motor, a first planetary gear unit, a second planetary gear unit, a first engagement unit, and a second engagement unit. In a case where an operation state of the vehicle is high vehicle speed and a low driving force in which a requested driving force is small, by bringing the first engagement unit to an engaged state and the second engagement unit to the disengaged state, a first state where a gear ratio which is a rotation number ratio between an input element and an output element of a complex planetary gear unit becomes a first gear ratio γsmaller than '1' is set. In the case of a low vehicle speed and a high driving force in which the requested driving force is large, by bringing the second engagement unit to the engaged state and the first engagement unit to the disengaged state, a second state where the gear ratio becomes a second gear ratio γlarger than '1' is set.