Abstract
Temperature distributions and vibration acceleration of the cam-ring of a hydraulic vane type test pump were measured simultaneously under real operating conditions. Four thermocouples were embedded in the cam-ring and the side-plate; one acceleration pickup was implanted in the cam-ring. A hydraulic oil with ISO VG32 was used as the test fluid and the inlet oil temperature was specified at 30 to 50℃. The discharge pressure was up to 10 MPa and the rotational speed was set between 6.7 and 15 rps. In the vicinity of the condition when the vane tip detached from the sliding surface of the cam-ring, the temperatures and acceleration were measured. The salient conclusions are as follows: The vane-tip detachment was appeared at lower discharge pressure for higher oil temperature and lower rotational speed. The detachment was caused marked changes in vibration and temperature of the cam-ring.
