Monitoring of the operating reliability of hydraulic pressure equipment I
Although there are still many wagons with fixed displacement pump and throttle control, increasing use is now made of wagons with variable displacement pump and pressure control or oil flow pressure control (load sensing system). All three methods of volume flow control are based on an infinitely variable oil flow, but differ in price, in the complexity of their valves, in the theoretical amount of dissipated power and, according to the makers, in the degree of fine control possible. In this report, these methods are presented in theoretical terms and compared. Power control, including summation power control, is explained. In a series of tests on side dumpers, the load sensing system proved superior in terms of final temperature, conversion of energy and amount of dissipated power. It also performed well underground, but its potential benefits will depend to a great extent on the particular circumstances of use and the skill of the operators.
Bibliographic Reference: EUR 14279 DE (1993) 137 pp., MF, ECU 8
Record Number: 199310532 / Last updated on: 1994-11-29
Original language: de
Available languages: de