Study of Camshaft's Rupture in 4 Cylinders PWS Pump

The calculation and analyses of the camshaft's rupture in 4 cylinder PWS pump are carried out. It is found that if the pump is correctly fixed, the stress distribution in the camshaft is all right and the fatigue rupture will not happed evenif the pressure in pump end is more than 100 MPa. If the camshaft is nearly fixed as a cantilever beam, the camshaft's rupture will happen. On the other hand, the ruptured position is the same as the biggest calculated stress. The test results show that the physical and mathematical models established in the paper are correct, and ANSYS software are suitable for structure analyses of the camshaft.