Patent · US Active

Power transmission apparatus for a vehicle

US10272765B1 · kind B1 · utility

9Cited by
4References
5Claims
0Family size

Assignees

Inventors

Key dates

Filing dateNov 22, 2017
Grant dateApr 30, 2019
Priority date
Expiry dateNov 22, 2037

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S903/919
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

A power transmission apparatus for a vehicle may include: a first, second, third, and fourth input shaft; an output shaft; an idle shaft; a fixed transmission performing shifts to fixed shift stages depending on gear ratios of four change gear trains; and a torque assist driving and electronic continuously variable automatic transmission performing a torque assist for a torque input from the fixed transmission and performing electric vehicle driving and electronic continuously variable automatic transmission functions to output the torque through the output shaft. The disclosed power transmission apparatus implements fixed shift stages of four forward speeds and one reverse speed in a dual clutch transmission (DCT) structure that uses three synchronizers. The disclosed power transmission apparatus improves fuel consumption and acceleration performance by adding one planetary gear set and a motor/generator to enable driving in an electric vehicle (EV) mode and an electronic continuously variable automatic transmission (e-CVT) mode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.