Abstract
The powertrain of the parallel-series hybrid electric vehicle(PSHEV) is discussed for its features of dual-motor structure in which powers from the engine and the tractive mo- tor are coupled at the output shaft of the transmission instead of the input shaft. Control strategies based on ICE optimal oper- ating schedule are utilized to improve the powertrain efficiency and reduce fuel consumption. To identify the power demand of the driver, a new “nine-point-definition method” is proposed. Special attention is given to the combination control of differ- ent power sources during gear shifting. Regenerative braking is divided into the braking mode and the coasting mode and dif- ferent control methods are applied for each mode. A hybrid powertrain controller (HCU) based on CAN network is devel- oped to implement these strategies, which is proved to be able to work efficiently and stably by hardware-in-loop experiment and on-board test. Test results show that under the coordination of HCU the vehicle achieves 35% reduction in fuel consump- tion and improvement in acceleration performance.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
