In order to occupy a place in the excavator market competition, many foreign well-known excavator manufacturers have proposed energy-saving control systems with independent intellectual property rights. The representative energy-saving control products of these companies mainly include PMS system of O&K, CAPS system of Link-Belt, EPC system of Caterpillar, OHS system of Hitachi, OLSS system of Komatsu, APC system of Kato, ITCs system of Kobelco, EPOS system of Daewoo, etc. The following is a brief analysis of Link-Belt control system.
The main pump only provides the required flow to each actuator, without redundant flow output, so there is no overflow loss. When all the actuators do not work, the displacement of the main pump returns to zero, which effectively reduces the loss.
