Title: Engine operation control for an electromagnetic coupling dual electric machine hybrid electric bus

Authors: Junxi Wang, Feng Wang, XiaoJian Mao, Bin Zhuo

Addresses: Institute of Automotive Electronic Technology, Shanghai Jiaotong University, 800 Dong Chuan Rd, Shanghai 200240, China. ' School of Mechanical Engineering, Shanghai Jiaotong University, 800 Dong Chuan Rd, Shanghai 200240, China. ' School of Mechanical Engineering, Shanghai Jiaotong University, 800 Dong Chuan Rd, Shanghai 200240, China. ' School of Mechanical Engineering, Shanghai Jiaotong University, 800 Dong Chuan Rd, Shanghai 200240, China

Abstract: An electromagnetic coupling dual electric machine hybrid electric bus is investigated. The flywheel and start-motor of the Internal Combustion Engine (ICE), the mechanical clutch and the manual transmission are replaced by Double-electric Machines (DM). The DM work as an electromagnetic clutch and a continuously variable transmission, simultaneously. An Improved Engine Operation Control (IEOC) is proposed to maximise the efficiency of the overall electromagnetic coupling system, in which the ICE efficiency, the DM efficiencies and the battery efficiency are all explicitly taken into account. Simulation results indicate potential fuel economy improvement relative to the traditional control.

Keywords: continuously variable transmission; CVT; dual electric machines; electromagnetic coupling; EOC; engine control; fuel economy; hybrid electric buses; system efficiency; vehicle design; electromagnetic clutch; battery efficiency; engine efficiency; electric machine efficiency; simulation; hybrid electric vehicles.

DOI: 10.1504/IJVD.2010.033829

International Journal of Vehicle Design, 2010 Vol.53 No.3, pp.181 - 197

Received: 14 Jan 2008
Accepted: 11 Mar 2009
Published online: 02 Jul 2010 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article