抄録
Temperature of three main tribological parts of a swashplate type axial piston pump was measured simultaneously. Five thermo-couples were embedded in the cylinder block, four thermo-couples were in the swash plate, four thermo-couples were in the valve plate and one thermistor was placed in the suction conduit. A hydraulic mineral oil with ISO VG22 was used as the test oil. The maximum discharge pressure was 20 MPa, the maximum rotational speed was 25 rps, and the inlet oil temperature was 20, 30, 40 ℃. In conclusion, the temperature of the cylinder block near the bottom dead center of the pistons was high and the temperature near the top dead center was low; The temperature rise in the valve plate and the swash plate corresponding to the delivery port was large and the rise to the suction was small; The temperatures increased as the rotational speed became large; The cylinder-block temperature was less affected by the inlet oil temperature.
