Development of “Electric Actuator for Shift-by-wire”
Resource from: NTN Likes:3025
Nov 07,2011
(November 7, 2011)
NTN Corporation (hereafter, NTN) has developed the “Electric Actuator for Shift-by-wire*1” for vehicles, aimed at achieving major weight savings and a more compact size.
In recent years, there has been a focus on electrification of vehicles with a shift from manually and hydraulically operated devices to those operated with electric drive motors, with the aim of achieving greater vehicle comfort, safety, weight savings and efficiency in order to improve fuel efficiency. Drive motors (actuator units) used in electrically operated devices have also increasingly shifted to the use of ball screws instead of slide screws and worm gears, as a means of improving the conversion efficiency of the rotational force of motors to linear or reciprocal motion.
The “Electric Actuator for Shift-by-wire” developed by NTN incorporates ball screw technology that is more efficient and compact than conventional products*2, and allows increased efficiency and greater reliability for shift-by-wire. The dual shaft structure, that of the ball screw shaft and output shaft, have been reviewed and integrated into a single shaft to reduce the number of parts, decrease size and achieve major weight saves of 60% compared to conventional products. A proprietary positional sensor to detect the position of protrusions directly from the output shaft has been integrated within the compact frame, eliminating the need for a separate positional sensor or associated assembly processes.
With the increasing shift in electrically operated vehicle parts, NTN plans to market this newly developed lightweight and compact product, which incorporates high efficiency ball screw technology, to a wide range of customers into the future.
*1 A system that changes gears remotely using electric signals
*2 July 27,2009 Press Release : Electric actuator
http://www.ntn.co.jp/english/news/news_files/new_products/news200900021.html
[Features]
(1) Lightweight and compact : 60% weight savings over conventional products (2.7kg → 1.1kg)
(2) Integrated positional sensor : proprietary compact structure to detect the position of protrusions directly from the output shaft
[Application]
· Electric actuator units for shift-by-wire of vehicle
· Various electric actuator units for other vehicle applications
[Product Photo]
(NTN)
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1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
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