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:
Mar. 04, 2014
Filed:
Jul. 25, 2011
Seok Young Yun, Hwaseong-si, KR;
Seok Young Yun, Hwaseong-si, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
A gear shifting method of a hybrid vehicle may include releasing a clutch and brake of a transmission and determining a neutral condition status, controlling torque of an engine connected to one operational element of a first planetary gear set in a neutral condition, and controlling speed of a first motor/generator connected to the other operational element of the first planetary gear set. Accordingly, a speed of the first and second motor/generator are controlled and a torque of the engine is controlled in a neutral or parking state of a shift lever such that a mode change becomes easy and the torque of the engine is continuously controlled to improve a shift quality and a driving performance and to save fuel, while the neutral or parking state is changed to a drive or reverse state or the drive or reverse state is changed to the neutral or parking state.