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Journal of Electrical and Computer Engineering
Volume 2017, Article ID 2605460, 9 pages
Research Article

Development of an Integrated Cooling System Controller for Hybrid Electric Vehicles

1School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng, China
2School of International Education, Liaocheng University, Liaocheng, China

Correspondence should be addressed to Chong Wang; moc.621@1gnawc

Received 14 January 2017; Accepted 15 March 2017; Published 10 April 2017

Academic Editor: Ephraim Suhir

Copyright © 2017 Chong Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A hybrid electrical bus employs both a turbo diesel engine and an electric motor to drive the vehicle in different speed-torque scenarios. The cooling system for such a vehicle is particularly power costing because it needs to dissipate heat from not only the engine, but also the intercooler and the motor. An electronic control unit (ECU) has been designed with a single chip computer, temperature sensors, DC motor drive circuit, and optimized control algorithm to manage the speeds of several fans for efficient cooling using a nonlinear fan speed adjustment strategy. Experiments suggested that the continuous operating performance of the ECU is robust and capable of saving 15% of the total electricity comparing with ordinary fan speed control method.