For all major components such as engines excavator, variable pump, motor, all kinds of control valves used excavators trailers, adopt energy-efficient, progressive power approach. The current plan to get power to match the successful use of various energy-saving plan. Mostly in the excavator "engine of a hydraulic system of a bucket of a load," one part of the total energy transfer chain complete power to match the 55 used excavators, the main engine of a pump power matching and power matching pump a load control program . In the hydraulic excavator complete power to match the engine of a pump, mainly progressive pump on the engine output power of absorption capacity Yuchai used excavators, perhaps in the selection of torque control pump speed sensing control to complete an engine under an exact match. The engine power absorbed by the pump as much as possible into hydraulic energy, energy saving effect complete. More extensive use of hydraulic control for the pump to match a load power plan in the load sensing control, load flow control, both through the conditioning variable pump swivel angle changes make the demand flow output flow and actuator match. Then cut overflow lost and lost savings. The basic price by excavators time to determine. In China, life in general mechanical design engineering for 10 years (in general, due to the introduction of new products, the use of a 10-year old machine, even at very low prices are also available), the average time of about 2000 hours. In normal use, the engine overhaul cycle of 10,000 to 15,000 hours, often in the hydraulic pump life of 20,000 hours, while others, such as hydraulic motors, gear boxes, life master control valve assembly, and other parts even longer, That is for the new machine, in the absence of unexpected circumstances within five years without major repairs. Used Yuchai mini excavators, Guiyang used excavators, used excavators Kim Ho Jin Hao from Shanghai Used Construction Machinery Co., Ltd .. Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) strong, credible, in Shanghai Minhang District of mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead jinhao used excavators into the brilliant and you work for a better future!