Title:
Power transmission system
Document Type and Number:
Japanese Patent JP6030505
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a power transmission capable of improving drivability and preventing overspeed of an internal combustion engine by acting engine brake properly on driving wheels during vehicle deceleration travel.SOLUTION: A power transmission includes: a first speed change gear that variably changes a speed of an internal combustion engine power to transmit it to driving wheels of a vehicle; and a second speed change gear T2 that is provided in parallel with the first speed change gear and changes a speed of power in stages between an internal combustion engine and the driving wheels to transmit it. The second speed change gear T2 has: first rotary elements 62 and 72 coupled to the internal combustion engine, second rotary elements 65 and 73 coupled to the driving wheels, a third rotary element 63, and a fourth rotary element 76, where their revolution speeds have a collinear relationship to one another; power transmission changing devices 81 and 111 that can change a power transmitted between the first rotary elements 62 and 72 and the internal combustion engine; a first brake 91 for braking the third rotary element 63; and a second brake 101 for braking the fourth rotary element 76.
Inventors:
Kazuki Ichikawa
Nobuhiro Kobayashi
Fumihiro Yoshino
Nobuhiro Kobayashi
Fumihiro Yoshino
Application Number:
JP2013120913A
Publication Date:
November 24, 2016
Filing Date:
June 07, 2013
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F16H37/02; F16H3/66; F16H21/20; F16H29/04; F16H31/00; F16H61/12
Domestic Patent References:
| JP2005502543A | ||||
| JP2013071574A |
Foreign References:
| US1945702 |
Attorney, Agent or Firm:
Tomoo Takahashi
Koji Arai
Koji Arai