Facing the increasingly strict environmental protection, energy saving and the requirement of sustainable development, hydraulic technology for noise, leakage, pollution, low efficiency of faults and by the electrical drives, mechanical transmission of strong competition challenges. To improve the competitiveness of the hydraulic transmission, expand its application field, hydraulic transmission should catch the main core technical problem and improve the technology, advanced technical achievements of the transplant, correction shortcoming, play advantage, and create new vitality, meet the future development needs. The main development trends:

A, improve efficiency: 1, take energy saving technology, the variable pump is adjusted by pressure compensated, load sensor system, make it has used to control the pressure and flow load automatic compensation function; 2 develop new seal and reducing friction material and improve relative motion between a oil film lubrication design method, effectively reduce the lubrication leakage loss, improve the volume efficiency; 3 the use of advanced design idea and try to minimize the energy in the process of the power transmission losses; 4 the volume control instead of throttling control; 5 use of the existing advanced technology, such as by ac frequency conversion control motor drive quantitative hydraulic pump, to achieve the purpose of energy-saving system.

Second, focus system design: 1, in the use of performance meet the premise, realize the system simplistic, integration and modular, in order to improve the reliability of the system, operation and maintenance; 2, full consideration of the energy conservation environmental protection requirements will be system; 3 and reference to electronics, control, computer and network technology research, improve mechanical and electrical integration technology liquid level to meet the modern production equipment automation, intelligent tend to the development direction of the network requirements.

Third, pay attention to environmental protection: 1, reducing the noise and reduce the noise of the hydraulic pump is mainly improve the structure design of the pump that fluid flow smoothly, reduce pressure pulsation, and improving the hydraulic pump shell and assignment system structure stiffness, in order to reduce its deformation produced vibration. Another to solve for the whole system design is not reasonable and of generation system application noise; 2, biodegradable hydraulic oil and mineral base hydraulic oil to seek alternative products, development biodegradable rapid hydraulic oil and pure water hydraulic system is hydraulic technology development new trend, it has by the United States, the European Union, Japan and other countries all over the world are highly valued. According to experts, the next 10 years, most of the minerals used in walking mechanical hydraulic oil will be biodegradable quickly replace hydraulic oil; 3, water hydraulic transmission: water hydraulic components set hydraulic transmission power density and clean the advantages of pneumatic transmission price at an organic whole, concerned, now became one of the hydraulic technology advanced topic. At present Japan, Denmark and Germany has development variety specification relatively complete hydraulic pump and control valve.

Four, improve work pressure: is to improve work pressure will make hydraulic components in weight, volume decreases, and also makes power quality than and power than improving volume, this to in weight, volume has the strict request in the aviation, aerospace, and walking, mechanical and ship until the application of engineering field is more important, this will make host realize lightweight, miniaturization, energy conservation. This is an inevitable trend.

Looking to the future, hydraulic transmission main competitors are electrical transmission and mechanical transmission, the hydraulic pressure technology must give full play to its own advantages in the field of each reference other advanced technical achievements, the use of new materials, new technology, and electronic technology, control technology, computer technology and network technologies, realize integrated mechatronics, and the automatic intelligent network development direction, can we keep the competitiveness in textiles and constantly expand application field.