Cam tappet wearing test device

• Main Authors: He Ruiliang, Yang Zhangxuan, Yin Lianmin, Qu Shengguan, Li Xiaoqiang
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2016
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a cam tappet wearing test device. The device comprises an engine body, a cam, a tappet, a push rod, a cam driving device and a loading device applying an axial load to the push rod. The cam driving device is connected to the cam. The engine body is provided with a sliding assembling hole. The tappet is connected to the sliding assembling hole. The cam is contacted with one end surface of the tappet. The other end of the tappet is connected to the push rod. In the invention, a major friction pair, which is a cam-tappet friction pair, is taken as a research object in a valve timing mechanism, and a contact condition between the cam and the tappet under different loads can be tested. Simultaneously, the device possesses advantages that the structure is simple; operation is easy and manufacturing and testing cost is low; disadvantages that an engine whole machine test is complex and an actual engine integration investigation period is long are avoided; and a wearing characteristic test of