Conventional stepped power transmission systems exhibit abundant energy dissipation, complicated handling and costly maintenance. On the other hand, continuously-variable power transmissions (CVTs), which are recently considered to be used in the industry, despite their high capabilities, face a number of drawbacks including limited torque transmission capacity, high-precision manufacturing and installation requirements, low cost effectiveness and relatively modest power transmission efficiencies. Therefore, innovative power transmission systems that intend to resolve or lessen one or more of these disadvantages are critical in power transmission from pinion to wheel in electric traction motors of both diesel and electric locomotives; especially when active and advanced control of traction effort and adhesion is of high importance and are going to be welcomed by rail industries. In this research, an innovative quasi-continuous power transmission (QCPT) system is introduced. In this system, a fully-automatic gear box including six pairs of engaging gears is considered where only one pair of gears is engaged in any operating moment. The main components of the QCPT are the input and output shafts each having six engaging gears, speed regulating sensor, electrical module and intelligent pins. The governing parameter in this design is output shaft rotating speed or output torque of the system. When high output torque is needed, the system automatically transfers power to lower gears, and in the need of high output speed, higher gears are assigned. The proposed system is simple and cost-effective, while having high reliability and efficiency.
Skip Nav Destination
ASME 2007 Rail Transportation Division Fall Technical Conference
September 11–12, 2007
Chicago, Illinois, USA
Conference Sponsors:
- Rail Transportation Division
ISBN:
0-7918-4800-0
PROCEEDINGS PAPER
An Innovative Quasi-Continuous Power Transmission System Available to Purchase
Asghar Nasr,
Asghar Nasr
Iran University of Science and Technology, Tehran, Iran
Search for other works by this author on:
Yasser Jafari Jozani,
Yasser Jafari Jozani
Iran University of Science and Technology, Tehran, Iran
Search for other works by this author on:
Mehrdad Zoroufi
Mehrdad Zoroufi
Iran University of Science and Technology, Tehran, Iran
Search for other works by this author on:
Asghar Nasr
Iran University of Science and Technology, Tehran, Iran
Yasser Jafari Jozani
Iran University of Science and Technology, Tehran, Iran
Mehrdad Zoroufi
Iran University of Science and Technology, Tehran, Iran
Paper No:
RTDF2007-46014, pp. 53-58; 6 pages
Published Online:
March 23, 2009
Citation
Nasr, A, Jafari Jozani, Y, & Zoroufi, M. "An Innovative Quasi-Continuous Power Transmission System." Proceedings of the ASME 2007 Rail Transportation Division Fall Technical Conference. ASME 2007 Rail Transportation Division Fall Technical Conference. Chicago, Illinois, USA. September 11–12, 2007. pp. 53-58. ASME. https://doi.org/10.1115/RTDF2007-46014
Download citation file:
10
Views
Related Proceedings Papers
Related Articles
Investigation of Causes of Low Wheel-to-Rail Adhesion and Possible Methods of Improving It
Trans. ASME (February,1957)
Wheel-Rail Wear and Adhesion With and Without Sand for a North American Locomotive
J. Eng. Ind (May,1986)
Plasma Treatment of Railway Rails to Improve Traction
J. Eng. Ind (August,1971)
Related Chapters
Backlash
Design and Application of the Worm Gear
Understanding the Problem
Design and Application of the Worm Gear
Power Generation
Engineering Practice with Oilfield and Drilling Applications