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. 18, 2017
Filed:
Dec. 03, 2014
Hyundai Motor Company, Seoul, KR;
Changwook Lee, Suwon-si, KR;
Kangsoo Seo, Yongin-si, KR;
Donghwan Hwang, Seoul, KR;
Jaechang Kook, Hwaseong-si, KR;
Jongsool Park, Hwaseong-si, KR;
Horim Yang, Yongin-si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A power transmission system of a hybrid electric vehicle may include an input shaft to which power from an engine is input, an output shaft, a planetary gear set including a first rotation element being driven by electrical driving force, a second rotation element being externally engaged with the output shaft as an output element, and a third rotation element being driven by rotational power of an engine, a first motor/generator directly connected to the first rotation element of the planetary gear set, a second motor/generator selectively externally engaged with the output shaft, a first transfer gear, a second transfer gear, a variable connecting unit selectively connecting the first transfer gear to the input shaft or the output shaft, and a variable direct coupling unit selectively connecting two rotation elements among the three rotation elements, of the planetary gear set.