Development of diesel engine sliding bearing wear test system

LI Jian-feng1，LIU Zhen-tao2，YANG Jian-fa1

（1. Hangzhou branch，Weichai Power Co.，Ltd.，Hangzhou 310030，China；2. Department of Energy Engineering，Zhejiang University，Hangzhou 310027，China）

Abstract：Aiming at the problems of bearing shell wear，in order to study the influence mechanism of sliding bearing wear，one sliding bearing wear test system was developed because existing equipment can't satisfy test requirement. The engine bearing such as main bearing shell and connecting rod bearing shell wear properties could be tested by this test system，under different structure，different rotating speeds，different lubricating oil condition，different abrasive particle and loads. The five subsystems as lubricating system，test control system，hydraulic system，mechanical bearing system and control system were introduced based on the study of test method. The load on analog axis was applied by hydraulic system. The motor speed was controlled by VFD. Lubricating oil pressure and temperature could be adjusted freely. The automation control of the test system，displaying in real time for the test data and the collection and preservation was achieved by the LabVIEW software. The wear test under different working conditions was achieved in the test system. The results indicated that the test system of which the function can be realized，and has a good performance and reached the expect goal.