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一、定量系统和定压系统目前,一般工程采用液压传动技术的基本原理如图1a)所示。因泵的输出流量等于马达的输入流量(不考虑溢流和泄漏等),故称之为常流量系统或定量系统。在这种系统中,发动机和泵决定了输出流量,改变泵的输出排量q_1,可以改变马达的输出转速n_2,并可根据输出特性曲线得到一个与输出扭矩T_2相应的系统压力P。如果要在系统中进行能量回收,就需要采取节能措施,最简单的方法是在蓄能系统中安装液压蓄能器,用以储存系统在小功率
First, the quantitative system and constant pressure system At present, the general engineering principles of hydraulic transmission technology shown in Figure 1a). Because the pump output flow is equal to the motor input flow (without considering flooding and leakage, etc.), so called constant flow system or quantitative system. In this system, the engine and pump determine the output flow, change the pump output displacement q_1, you can change the motor output speed n_2, and can be based on the output characteristic curve to obtain a system pressure P corresponding to the output torque T_2. If the energy recovery in the system, you need to take energy-saving measures, the easiest way is to install a hydraulic accumulator energy storage system to store the system at low power