Information Processing of Chassis Dynamometer based on Controller Area Network

The development of chassis dynamometer of hybrid vehicle based on CAN bus was studied. Chassis dynamometer of hybrid vehicle measurement methods and loading devices are analyzed, and laid the foundation for the resistance simulation of chassis dynamometer. Road resistance simulation on HEV chassis dynamometer is researched, getting electric quantity simulation type of chassis dynamometer driving resistance. The research and development of hybrid vehicle chassis dynamometer based on CAN Bus is conducive to enhance the level of whole hybrid vehicle and car assembly, establish the test procedures, test methods and test standards, provide a research platform and methods for test evaluation of HEV energy utilization. The chassis dynamometer system needs to be calibrated in order to ensure its accuracy .The drum Test bench surface traction can be measured from the motor casing tangential force using force sensor mounted on the motor casing. The design adopts bidirectional calibration arm, it can decrease the effect of extra torque to ensure the test precision of automobile chassis dynamometer surface traction. The method of hybrid vehicles fuel consumption experiment test is analyzed through experiment test on the HEV chassis dynamometer and actual road. We obtain some regularity of hybrid vehicles energy consumption and hybrid vehicles fuel consumption test method through studying lightweight hybrid vehicles fuel economy.