ELECTRIC LOADING MULTIFUNCTIONAL TEST BENCH FOR POWER-DIVIDING HYDRAULIC-MECHANICAL COMPOSITE TRANSMISSION SYSTEM AND APPLICATION THEREOF

摘要

An electric loading multifunctional test bench for a power-dividing hydraulic-mechanical composite transmission system and a method thereof. The test bench comprises a mechanical part and a control part. The test bench can achieve performance test of the hydraulic drive unit of the hydraulic-mechanical composite transmission system. By simulating the actual driving conditions and operating conditions of a vehicle in an application scenario, the transmission performance of the hydraulic drive unit of the hydraulic-mechanical composite transmission system is tested, and one-stage and multi-stage hydraulic transmission unit performance test, the test of the proportion of mechanical and hydraulic power flow of the composite transmission system and the automatic optimization of the distribution ratio of the mechanical and hydraulic power flow can be achieved. According to the matched universal characteristic curve of an engine, the optimal combined distribution scheme of the mechanical and hydraulic power flow is finally achieved, and power performance optimization is provided for vehicles, using a hydraulic-mechanical composite transmission system, that will be put into production in the future.