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. 07, 2020
Filed:
Dec. 06, 2017
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Jae Chang Kook, Gyeonggi-do, KR;
Jin Ho Kim, Gyeonggi-do, KR;
Seong Wook Hwang, Gyeonggi-do, KR;
Seong Wook Ji, Gyeonggi-do, KR;
Woo Churl Son, Gyeonggi-do, KR;
Won Min Cho, Gyeonggi-do, KR;
Hyun Sik Kwon, Seoul, KR;
Jong Sool Park, Gyeonggi-do, KR;
Woo Jin Chang, Gyeonggi-do, KR;
Dong Hwan Hwang, Seoul, KR;
Ki Tae Kim, Incheon, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
A vehicle transmission is provided that improves fuel efficiency through multiple speed stages and enhances silent drivability of a vehicle using an operating point in a low RPM range of an engine. The vehicle transmission combines three simple planetary gear units with a single compound planetary gear set or combines five simple planetary gear units to shift gears while changing rotational speeds and directions by a selective intermittence operation using rotation elements of the planetary gear units and a plurality of friction elements. Through such a shift operation, it is possible to form at least forward 10-speed or more and reverse 1-speed gear ratios for driving of the vehicle.