4WE10X6-3X/CG24N9K4/V

4WE10X6-3X/CG24N9K4/V

4WE10X6-3X/CG24N9K4/V

R978907193 4WE6J7X/HG24N9K4

R978907197 4WE6Y7X/HG24N9K4

R978907198 4WE6C7X/HG24N9K4

操縱先導(dǎo)手柄，則液壓先導(dǎo)回路中建立起與手柄偏轉(zhuǎn)量成比例的壓力來控制換向閥閥芯的位移和泵的排量

R978907211 5-4WE10H3X/CG24N9K4/V

R978907226 4WE6J6X/EW24N9K4/B10

由于負(fù)壓控制的信號(hào)采集點(diǎn)在主挖掘閥的出口處,只有主控制閥有動(dòng)作時(shí)此負(fù)壓信號(hào)才會(huì)發(fā)生變化,從而使泵的排量發(fā)生變化,這就使得液壓泵的控制永遠(yuǎn)滯后于主控制閥的控制

R978907227 4WE6J6X/EW24NK4

油泵的流量和由此產(chǎn)生的執(zhí)行元件的工作速度與先導(dǎo)壓力-控制壓力成正比例。

R978907384 5-4WE10L5-3X/CG24N9K4/V

R978907395 4WE6J7X/HG24N9K4/B10

R978907417 4WE6JA6X/EW110N9K4/B10V

R978907545 5-4WE10EB3X/CG24N9K4/V

R978907546 4WE6D7X/OFHG24N9K4

R978907713 4WE6D6X/OFEG24N9K4/B08V

R978907727 4WE6D6X/OFEW110NK4/V

R978907759 4WE6D7X/HG24N9K4/V

R978908306 4WE6D73-6X/EW110N9K4/V

R978908308 4WE6JA6X/EG220N9K4/B10V

在正流量的主控制閥上沒有負(fù)壓信號(hào)發(fā)生裝置,他的信號(hào)采集于二次先導(dǎo).其它部分與負(fù)流量沒有什么區(qū)別

R978908567 4WE6G6X/EW24NK4

R978908592 4WE6H73A6X/EG110N9K4

R978908604 4WE6GA7X/HG24N9K4/V

R978908684 4WE6H6X/EW110N9K4/B08

R978908770 4WE10JA3X/CW24N9K4

R978909098 5-4WE10C3X/CG24N9K4/V

而在正流量中,由于泵的控制信號(hào)采集于二次先導(dǎo)壓力

R978909865 4WE6D6X/OFEW110N9K4/B28

R978909872 4WE10R3X/CG24N9K4/A12

R978909934 4WE6X2A-6X/EW110N9K4/V

R978909967 4WE10X6-3X/CW110N9K4/V

R978910023 5-4WE10JB3X/CG24N9K4/V

R978910078 4WE10MB3X/CW110N9K4/V

正流量控制系統(tǒng)，是力士樂上世紀(jì)80年代的技術(shù)，主要特點(diǎn)是：操縱手柄的先導(dǎo)壓力不僅控制換向閥，還用來調(diào)節(jié)油泵的排量。執(zhí)行元件不工作的時(shí)候，油泵上沒有先導(dǎo)壓力，斜盤擺角小，油泵只輸出少量的備用流量