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Summary & Details

Proposal of Seamless Two-Speed eAxle using Torque Sensor

トルクセンサを用いたEV におけるシームレス2速変速システムの提案

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Format: PDF

Price: Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880

Publication code: 20214964

Paper/Info type: Journal of Society of Automotive Engineers of Japan

Vol.75 No.12

Pages: 60-65(Total 6 p)

Date of publication: Dec 2021

Publisher: JSAE

Language: Japanese

Detailed Information

Category(J)	E V の航続距離拡大技術 Translation
Category(E)	Range Extension Technologies for EV
Author(J)	1) 山田翔太, 2) 山田洋, 3) 岸田寛孝
Author(E)	1) Shota Yamada, 2) Hiroshi Yamada, 3) Hirotaka Kishida
Affiliation(J)	1) 日本精工, 2) 日本精工, 3) 日本精工
Abstract(J)	本稿では磁歪式トルクセンサを備えたEV用の2速変速機を紹介する．2速変速機の導入により航続距離の延伸と走行性能の向上が可能になる．航続距離最大化のためには大段間比であることが求められるが，変速ショックの増大を招く．出力軸トルクセンサによるフィードバック制御により，シームレス変速を実現する． Translation
Abstract(E)	This article illustrates a 2-speed transmission for EVs with a magnetostrictive torque sensor. Introduction of 2-speed transmissions into EVs can improve cruising range and driving performance. There are two requirements for 2-speed transmissions in EVs; 1) large step ratio to maximize cruising range and 2) compactness for mountability. Though shifting in large-step-ratio transmission causes severe shifting shock, feedback control with the output torque sensor makes seamless shifting possible. Also, we introduce a multifunctional shifting device using a single electric actuator to downsize the transmission. The advantages of the developed 2-speed transmission are verified through seamless shifting experiments.

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