Powertrain for hybrid vehicle

Patent metadata

Field	Value
Publication number	US-2016144705-A1
Application number	US-201514693223-A
Country	US
Kind code	A1
Filing date	Apr 22, 2015
Priority date	Nov 25, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

A powertrain apparatus may include a planetary gear set including a first rotary member connected to a first motor and selectively operating as an input element or a fixing element, a second rotary member supplied with power from an engine and selectively operating as an input element, and a third rotary member connected to an output shaft and selectively operating as an output element, a second motor supplying power to a motor input shaft, and a transmission including a plurality of pairs of engaged gears forming different transmission gear ratios, the pairs of engaged gears being provided on the motor input shaft and the output shaft, respectively, with an engaging unit provided on the motor input shaft at a location between the pairs of engaged gears and selecting one of the pairs of engaged gears corresponding to a driving speed.

First claim

What is claimed is:

1 . A powertrain apparatus for a vehicle, comprising:
a planetary gear set including:
a first rotary member connected to a first motor and selectively operating as an input element or a fixing element;
a second rotary member supplied with power from an engine and selectively operating as an input element; and
a third rotary member connected to an output shaft and operating as an output element;
a second motor supplying power to a motor input shaft; and a transmission including a plurality of pairs of engaged gears forming different transmission gear ratios, the pairs of engaged gears being provided on the motor input shaft and the output shaft, respectively, with an engaging unit provided on the motor input shaft at a location between the pairs of engaged gears and selecting one of the pairs of engaged gears corresponding to a driving speed.

2 . The powertrain apparatus of claim 1 , wherein in the planetary gear set, the first rotary member is a sun gear, the second rotary member is a carrier, and the third rotary member is a ring gear.

3 . The powertrain apparatus of claim 2 , wherein a friction member is connected to the first rotary member of the planetary gear set so that the first rotary member selectively operates as a fixing element.

4 . The powertrain apparatus of claim 3 , wherein the friction member is a dog clutch selectively engaged between a transmission case and the first rotary member or a brake fixed to the transmission case.

5 . The powertrain apparatus of claim 1 , wherein the engaging unit is a dog clutch.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Park Jong Yun
• Choi Jae Young
• Kim Kyung Ha
• Kim Ki Nam

Classifications

• Y10S903/91

  Orbital, e.g. planetary gears · CPC title

• B60K6/54 Primary

  Transmission for changing ratio · CPC title

• B60K6/445

  Differential gearing distribution type · CPC title

• F16H37/046

  with an additional planetary gear train, e.g. creep gear, overdrive · CPC title

• F16H3/44

  using gears having orbital motion · CPC title