Development of the Powertrain Control System for Four Wheel Driven Hybrid Electric Vehicle

Powertrain control system for ldquostep Irdquo four-wheel driven hybrid electric vehicle has been developed, in which the front wheels are driven by conversional engine through automatic transmission and the rear wheels are directively driven by in-wheel motors. Firstly, hardware of the controller is designed using XC167CI chip with TouCAN structure. The bottom-level driven software of the controller is generated and compiled through comprehensively use of tool packages such as Dave and Tasking C. Secondly, different working modes of powertrain system are subdivided, and the energy management strategy based on logic threshold value control is implemented through application of Matlab State-flow. Finally, on-board vehicle test of the powertrain control system is carried through using test methods of hardware-in-the-loop (HIL) and Bypass. The test results illustrate the feasibility and validity of the above powertrain control system.