PVG阀

=this is PVG 阀 =  PVG—Proportional Valve Group，比例多路阀，有PVG32、PVG100、PVG120三种系列，PVGI是PVG32与PVG120的组合. PVG后所带数字表示该阀的输出功率. PVG阀产品还包括PVE Ser.4、PVG/HIC Hyb rid solution 和插装阀.

PVG阀常用术语
闭芯：负载敏感阀与变量泵组成的负载敏感系统 开芯：负载敏感阀与定量泵组成的负载敏感系统 闭环：带主阀芯位移反馈的主阀芯位移控制方法 开环：不带主阀芯位移反馈的主阀芯位移控制方法 比例：使输出压力/流量与输入信号成线性关系的控制方式 补偿：由二通压力补偿器实现，保持主阀芯前后压差为常数 负载独立：与变化的负载无关的控制执行元件的流量

PVG阀的模块化设计
PVP || 泵侧模块 || PVMD  || 机械驱动盖板  || PVB || 工作模块 || PVMF  || 机械浮动盖板  || PVE - DI || 带方向显示灯的电液控制模块 || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVMR <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">机械定位盖板 <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVH || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">液压驱动盖板 || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVPC <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">外部先导油源堵头 <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVLA || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">补油阀 || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVPX <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">电控LS卸荷阀 <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVLP || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">缓冲阀 || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVS <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">端盖板 <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVM || <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">机械驱动 || <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> || <span style="font-family: 宋体; font-size: 8pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> ||

PVG阀的技术参数 PVG32 压力： P-port： 350 Bar A/B port： 380 Bar T port： 25/40 Bar 流量： P-port： 150 L/min（230L/min - CC，Mid - Inlet） A/B port： 130 L/min

PVG100 压力： P-port： 350 Bar A/B port： 380 Bar T port： 25/40 Bar 流量： P-port： 240/300 L/min A/B port： 180 L/min 回油流量： 320 L/min

PVG100 压力： P-port： 400 Bar A/B port： 420 Bar T port： 25/40 Bar 流量： P-port： 240/300 L/min A/B port： 180/240 L/min

PVG阀的电气驱动
简介 电液驱动模块（PVE）： 将电子元件、传感器和驱动器集成为一个独立单元，然后直接和比例阀的阀体相连. 集成式电子元件： 补偿阀芯压力、内部泄漏、油液粘度变化、先导压力等所带来的影响，保证系统的低迟滞和高精度为系统提供内置的安全装置，如故障监控装置、方向指示灯和LED显示灯. 电感传感器（LVDT）： 当主阀芯移动时，LVDT上产生的感应电压和阀芯位置成比例关系. 闭环控制： 反馈传感器通过检测阀芯的哦运动产生反馈信号，根据反馈信号和输入信号对比所得的偏差，执行机构通过一个电磁阀桥来控制主阀芯的运动方向、速度和位置. 工作原理： 输入信号决定了推动主阀芯的先导压力等级. LVDT传感器检测主阀芯的位置，产生一个电控模块识别的反馈信号. 电控系统通过输入信号和反馈信号的偏差来驱动电磁阀，进而改变先导压力，驱动主阀芯到正确的位置. <span style="display: block; font-family: 宋体; font-size: 8pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;"> <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">类型 开/关驱动有PVEO、PVEO-R（液压斜坡触发）两种类型，这两种方式的主要特性相同，但后一种比前一种的响应时间要更长一些. PVEO的主要特性： - ON-OFF 先导控制 - 经济的远程控制 比例驱动有PVEM、PVEA、 PVEH、 PVES四种型式. PVEA的主要特性： - 比例，中等性能 - 数字调制先导控制 - 感应传感器反馈 - 低迟滞 - 故障监测 w/ 输出 PVEH/S的主要特性： <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">- 比例，高性能 - 数字调制先导控制 - 感应传感器反馈 - 响应速度快 - 低迟滞 - 故障监测 w/ 输出

故障监控系统
所有的PVEA、PVEH和PVES模块中都带有故障监控系统. 该系统有以下两种工作模式： ·主动故障监控：发出报警信号，断开电磁阀，阀芯回到中位. ·被动故障监控：仅发出报警信号. 监控范围： <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; msobidifontfamily: 宋体; msofontkerning: 0pt; msolist: Ignore;">1、 <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">输入信号监控：一旦输入信号超过允许的波动范围（电源电压的15%~85%），系统将切换到出错状态 <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; msobidifontfamily: 宋体; msofontkerning: 0pt; msolist: Ignore;">2、 <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">传感器监控：如果LVDT的任一线路损坏或者短路，系统将切换到出错状态 <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; msobidifontfamily: 宋体; msofontkerning: 0pt; msolist: Ignore;">3、 <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">闭环控制监控：如果阀芯的实际位置和要求的位置偏差过大（>12%,PVEA:25%），系统将检测到该错误并同时切换到出错状态. 两一种情况，当实际位置比要求为止更加靠近中位时，将不会引发错误.

<span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">

<span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVG阀 一般的维修和故障排除
首先需要查证故障属于机械故障、液压故障、还是电气故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">检查手动控制是否正常 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">在液控或电控工作时，检查手动控制是否正常 <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">机械故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">检查主阀芯限位是否不当 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">主阀芯卡住 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">主阀芯复位弹簧损坏 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">压力补偿器不工作 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">选错了缓冲阀 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">阀芯安装不当 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">电气故障 <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">电气故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">检查电气回路 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">中位开关不当 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">信号电压不正确 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">比例控制 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">针脚1: 电源电压 (100%) <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">针脚2: 信号电压变量 (25-50-75%) <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">针脚3: 接地 (0) <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">开关控制 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">针脚1: 选中为电源电压 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">针脚2: 选中为电源电压 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">针脚3: 接地 (0) <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">液控故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">先导压力不足 (PVG 32/120: 5-15 bar) <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">先导流量不足 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">(流量：每个功能需要1.5 L/min) <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">先导管路有空气 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">先导管路尺寸不当 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">错误的先导操控 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">远程液压手柄的溢流阀故障 <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;">输出不稳定 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">电气或液压驱动故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">主阀芯复位弹簧故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">主阀芯位置反馈传感器信号故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">液压系统污染 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">液压管路中有空气 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">检查液压油供给 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">开芯 PVP <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVP待机压力过低 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVG 32: 8 bar minimum <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVG 120: 12 bar minimum <span style="display: block; font-family: 宋体; font-size: 10pt; msobidifontfamily: Arial; msofontkerning: 0pt; text-align: left;"> <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">检查补偿器阀芯弹簧 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">• <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">闭芯 PVP <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">泵的待机压力过低 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">待机压力要超过 15 bar <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVP 溢流阀故障 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">PVP 阻尼孔堵住 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">内部过滤器堵住 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">内部先导压力不足 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">油管堵住 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">补偿器弹簧腔的负载压力不足（在PVP上测LS油口的压力） <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">负载压力太高，超过了系统压力设定 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">LS管路堵住 <span style="font-family: Verdana; font-size: 10pt; mso-bidi-font-family: Verdana; mso-fareast-font-family: Verdana; mso-font-kerning: 0pt; msobidifontfamily: Verdana; msofareastfontfamily: Verdana; msofontkerning: 0pt; msolist: Ignore;">– <span style="font-family: 宋体; font-size: 10pt; mso-bidi-font-family: Arial; mso-font-kerning: 0pt;">梭阀故障