A10VSO140DRS/32R-VPB22U99 Rexroth柱塞泵是上海韋米機(jī)電設(shè)備有限公司主要經(jīng)銷產(chǎn)品之一，保證產(chǎn)品【原裝正品】，價格優(yōu)惠，貨期短，發(fā)貨快；常規(guī)產(chǎn)品現(xiàn)貨供應(yīng)，放心購買。我公司專業(yè)經(jīng)營國外進(jìn)口液壓氣動備件、自動化儀表；主營產(chǎn)品：液壓配件、氣動元件、柱塞泵、齒輪泵、葉片泵、電磁閥、節(jié)流閥、比例閥、溢流閥、換向閥、流量閥；伺服驅(qū)動器、伺服模塊、伺服電機(jī)、探頭、傳感器、電纜、電源模塊、編碼器、接近開關(guān)等。常規(guī)型號產(chǎn)品現(xiàn)貨供應(yīng)，熱誠歡迎新老客戶來電咨詢采購！
工作時，在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下，迫使柱塞作上、下往復(fù)運(yùn)動，從而完成泵油任務(wù)，泵油過程可分為以下三個階段。
結(jié)論：通過上述討論，得出下列結(jié)論
① 柱塞往復(fù)運(yùn)動總行程L是不變的，由凸輪的升程決定。
② 柱塞每循環(huán)的供油量大小取決于供油行程，供油行程不受凸輪軸控制是可變的。
③ 供油開始時刻不隨供油行程的變化而變化。
④ 轉(zhuǎn)動柱塞可改變供油終了時刻，從而改變供油量。
3. 國產(chǎn)系列柱塞式噴油泵
國產(chǎn)系列柱塞泵主要有A、B、P、Z和Ⅰ、Ⅱ、Ⅲ號等系列。系列化是根據(jù)柴油機(jī)單缸功率范圍對供油量的要求不同，以柱塞行程，泵缸中心距和結(jié)構(gòu)型式為基礎(chǔ)，再分別配以不同尺寸的柱塞直徑，組成若干種在一個工作循環(huán)內(nèi)供油量不等的噴油泵，以滿足各種柴油機(jī)的需要。
國產(chǎn)系列噴油泵的工作原理和結(jié)構(gòu)型式基本相同，以A型泵為例介紹柱塞式噴油泵的構(gòu)造和工作原理。柱塞泵由四大部分組成：分泵、油量調(diào)節(jié)機(jī)構(gòu)、傳動機(jī)構(gòu)和泵體
國產(chǎn)最新智能柱塞泵為微處理器智能控制，液晶屏顯示，可與電腦進(jìn)行通訊，具有工作壓力穩(wěn)定、脈動小、操作方便等特點。廣泛用于生化、醫(yī)藥、化工、環(huán)保等行業(yè)，滿足以上行業(yè)需要連續(xù)恒壓、恒流輸送液體的要求。
上海韋米機(jī)電設(shè)備有限公司位于浦東金橋是全國工業(yè)傳動流體自動化領(lǐng)域?qū)嵙^強(qiáng)的經(jīng)銷商，有著豐富的氣動液壓技術(shù)服務(wù)、工業(yè)銷售及國際采購的經(jīng)驗，主營產(chǎn)品涉及液壓泵閥（電磁閥、柱塞泵拳頭產(chǎn)品）、工控產(chǎn)品、驅(qū)動模塊、伺服電機(jī)、可編程控制器PLC、數(shù)控傳動、傳感器系列、電源、氣動元件、工業(yè)儀器儀表。具體主要經(jīng)營品牌及產(chǎn)品如下:
博世力士樂rexroth工業(yè)液壓氣動元件大量現(xiàn)貨（電磁換向閥、節(jié)流閥、單向閥、比例閥、伺服閥、安全溢流閥、流量控制閥、減壓閥、調(diào)節(jié)閥、壓力繼電器、比例放大板、放大器，軸向柱塞泵、葉片泵、齒輪泵，伺服驅(qū)動器、伺服電機(jī)，氣動元件、氣動閥、氣缸等），部分系列型號：
電磁閥：4WE6、4WE10、4WE16；電液閥：4WEH10H、4WEH16、4WEH25，
單向閥：S10A、S20A、Z1S、Z2S、SL10、SL20、SV10、SV20、RVP，插裝閥：LC、LFA
溢流閥：DB、DBW、DBET、DBD、ZDB、Z2DB，減壓閥：DR6DP、DR10DP、ZDR6、ZDR10、DR-4X、DR-5X
節(jié)流閥：Z2FS6、Z2FS10、Z2FS16、Z2FS22；調(diào)速閥：2FRM5、2FRM10、2FRM16，
平衡閥：FD12FA、FD12PA、FD12KA、FD16FA，繼電器：HED80、HED40，電子單元：VT、0811
比例方向閥：4WRA、4WRAE、4WRE、4WREE、4WREEM、4WRH、4WRZ、4WRZE、4WRKE、4WRBKE、4WS2EM
高頻響方向閥：4WRPH、4WRPEH、5WRP、5WRPE、4WRREH、4WRP、4WRPE、4WRP(E)H、4WRSE、4WRSEH、4WRPNH、4WRL、4WRLE、4WRVE、4WRGE、4WRL、4WRLE、4WRDE、3WRCBH，伺服系統(tǒng)：HAS、HNL、HCS、HNL
柱塞泵：A4VSO、A10VSO、A2FO，定量馬達(dá)：A2FM，A4FM，A10FM/E， 齒輪泵：0510、AZPF，葉片泵：PV7
意大利阿托斯ATOS及迪普馬DUPLOMATIC、美國Parker派克及EATON VICKERS伊頓 威格士液壓、日本YUKEN油研泵閥優(yōu)勢現(xiàn)貨系列（電磁閥換向閥、壓力開關(guān)、柱塞泵、齒輪泵、比例閥、截止閥、開關(guān)閥等），
奧地利貝加萊B&R br-automation自動化配品配件貨期短現(xiàn)貨多（伺服驅(qū)動器、觸摸屏、工控機(jī)、CPU模塊、總線控制器、X20\2003\2005\2010系統(tǒng)中各類功能模塊等），
美國本特利(Bently Nevada)優(yōu)勢系列（監(jiān)測模塊、前置器、儀表框架、接口模塊、延伸電纜、傳感器探頭、轉(zhuǎn)速表、校驗儀等）
西門子Siemens優(yōu)勢主打系列（6SN、6FC、6FX、S7200、電機(jī)1FK、S7300、S7400、LOGO 低壓電器、軟啟、熔斷器、電源模塊、CPU、數(shù)控傳動）
另銷售有德國愛爾泰克Airtec氣動元件，APS接近開關(guān)，SMC氣動元件，倍加福編碼器、傳感器，歐姆龍低壓電器、川崎K3V泵 ，賀德克液壓元件、丹佛斯、費斯托全系列產(chǎn)品.
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采用雙柱塞結(jié)構(gòu)，壓力脈動小，寶石球壽命長；
采用進(jìn)口寶石柱塞和寶石球，確保流量精確
通過 RS232 接口與電腦通訊，可直接由電腦進(jìn)行控制 ；
接觸介質(zhì)材料耐有機(jī)溶劑腐蝕；
內(nèi)建過壓保護(hù)和流量校正系統(tǒng) ；
大屏幕液晶顯示；
精心設(shè)計的排氣裝置有效除去輸送液體中的氣泡。
流量與壓力設(shè)定可記憶 可與PLC實現(xiàn)通訊（定制）
軟件功能
實時顯示當(dāng)前壓力、設(shè)定壓力、設(shè)定流量 ； 實時曲線顯示泵工作壓力 可按兩種方式設(shè)定流量和壓力，快捷實用 ； 具有定時功能，方便設(shè)定泵的工作時間 ； 可保存當(dāng)前工作壓力，便于查看 ； 可打印當(dāng)前壓力等重要參數(shù) 。
平流泵（柱塞泵）產(chǎn)品廣泛應(yīng)用于石油勘探開發(fā)評價實驗、石油化工的催化反應(yīng)、聚合反應(yīng)、食品、制藥、液相色譜分析、超臨界萃取、分離、原子能科學(xué)、環(huán)境科學(xué)、工藝設(shè)備、實驗設(shè)備以及各種液體的微量送液等方面。TBP系列平流泵（柱塞泵）的各項性能指標(biāo)能夠滿足油田流體滲流流變特性研究的要求，填補(bǔ)了我國在相關(guān)實驗技術(shù)領(lǐng)域裝備制造上的空白，達(dá)到同類儀器的國際先進(jìn)水平。
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A10VSO140DFR1/31R-PPAB12N00
A10VSO71DFR1/31R-PPA12N00
A10VSO71DFR1/31R-PPA12N00
A10VSO4SDFR1/31R-PPA12N00-SO3
A10VSO71DR/31R-PPB12N00
A10VSO18DFR1/31R-PP12N00
A10VSO18DFR1/31R-PP12N00A10VSO28DFR1/31R-PSC12N00
A10VSO28DFR1/31R-PSC62N00
A10VSO28ED73/52L-VSC11N00P
A10VSO45DFR/31R-PSC62N00
A10VSO45DFR/52R-PSC12N00
A10VSO45DFR1/52L-PSC11N00
A10VSO45DFR1/52R-PUC11N00
A10VSO45ED72/52R-VSC11N00T
A10VSO60DFR/52R-PCD11N00
A10VSO71DFR/31L-PSC62N00
A10VSO71DFR1/31R-PSC12N00
A10VSO71DRG/31L-PSC12N00
A10VSO100DFR/31L-PSC62K07
A10VSO100DFR1/31R-PUC12N00
A10VSO10DFR1/52R-PKC64N00
A10VSO10DFR1/52R-PPA14N00
A10VSO10DR/52L-PKC64N00
A10VSO10DR/52R-PKC64N00
A10VSO10DR/52R-PPA14N00
A10VSO18DFR/31R-PKC62N00
A10VSO18DFR/31R-PPA12K01
A10VSO18DFR/31R-PPA12N00
A10VSO18DFR1/31R-PPA12K01
A10VSO18DFR1/31R-PPA12N00
A10VSO18DFR1/31R-PUC62N00
A10VSO18DR/31L-PUC12N00
A10VSO18DR/31R-PPA12N00
A10VSO18DR/31R-PSC12N00
A10VSO18DRG/31R-PPA12N00
A10VSO28DFLR/31L-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DFLR/31R-PSA12N00
A10VSO28DFR/31R-PPA12N00
A10VSO28DFR/31R-PPA12N00
A10VSO28DFR/31R-VPA12N00
A10VSO28DFR1/31R-PPA12L30
A10VSO28DFR1/31R-PPA12N00
A10VSO28DG/31R-PPA12N00
A10VSO28DR/31L-PPA12N00
A10VSO28DR/31R-PPA12N00
A10VSO28DRG/31R-PPA12K25
A10VSO28DRG/31R-PPA12N00
A10VSO45DFLR/31R-PPA12K57
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFLR/31R-PPA12N00
A10VSO45DFR/31R-PPA12N00
A10VSO45DFR/31R-PPA12O30
A10VSO45DFR1/31R-PPA12G60
A10VSO45DFR1/31R-PPA12K54
A10VSO45DFR1/31R-PPA12K57
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO45DR/31R-PPA12K01
A10VSO45DR/31R-PPA12K25
A10VSO45DR/31R-PPA12K57
A10VSO45DR/31R-PPA12N00
A10VSO45DR/31R-PPA12O90
A10VSO45DRG/31R-PPA12N00
A10VSO71DFLR/31R-PPA12N00
A10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFLR/31R-PPA12N00
AA10VSO71DFR/31R-PPA12K01
AA10VSO71DFR/31R-PPA12N00
AA10VSO71DFR1/31R-PPA12K01
AA10VSO71DFR1/31R-PPA12L30
AA10VSO71DFR1/31R-PPA12N00
AA10VSO71DFR1/31R-PPA12N00
AA10VSO71DFR1/31R-PPA12X31
AA10VSO71DR/31R-PPA12N00
AA10VSO71DRG/31R-PPA12K01
AA10VSO71DRG/31R-PPA12N00
AA10VSO71FHD/31R-PPA12K01
AA10VSO100DFLR/31R-PPA12G30
AA10VSO100DFLR/31R-PPA12N00
AA10VSO100DFLR/31R-PPA12N00
AA10VSO100DFLR/31R-PPA12N00
AA10VSO100DFLR/31R-PPA12N00
AA10VSO100DFLR/31R-PPA12N00
AA10VSO100DFR/31R-PPA12K01
AA10VSO100DFR/31R-PPA12K25
AA10VSO100DFR/31R-PPA12N00
AA10VSO100DFR1/31R-PPA12K25
AA10VSO100DFR1/31R-PPA12N00
AA10VSO100DFR1/31R-PPA12N00
AA10VSO100DFR1/31R-PPA12N00
AA10VSO100DR/31R-PPA12N00
AA10VSO100DR/31R-PPA12N00
AA10VSO100DR/31R-VPA12N00
AA10VSO100DRG/31R-PPA12N00
AA10VSO140DFLR/31R-PPB12N00
AA10VSO140DFLR/31R-PPB12N00
AA10VSO140DFLR/31R-PPB12N00
AA10VSO140DFLR/31R-PPB12N00
AA10VSO140DFLR/31R-PPB12N00
AA10VSO140DFLR/31R-PSB12N00
AA10VSO140DFR/31R-PPB12N00
AA10VSO140DFR1/31R-PPB12N00
AA10VSO140DFR1/31R-PPB12N00
AA10VSO140DFR1/31R-VPB12N00
AA10VSO140DR/31L-PPB12N00
AA10VSO140DR/31R-PPB12K02
AA10VSO140DR/31R-PPB12N00
AA10VSO140DRG/31R-PPB12N00
AA2FM250/60W-VPB01
AA2FO250/60L-VPB05
AA2FO250/60R-VPB05
AA2FO355/60L-VPH11
AA2FO355/60R-VPH11
AA2FLM1000/60W-VZH01
AA2FLM355/60W-VZH01
AA2V1000HDHR5EP
AA2V250HDHR5EP
AA4FO125/30R-PPB25N00
AA4FO71/10R-PPB25N00
AA4FO71/10R-PZB25N00
AA4VSO125DR/30R-PPB13N00
AA4VSO125DR/30R-VPB13N00
AA4VSO125DR/30R-VPB13N00
AA4VSO125DR/30R-VPB25N00
AA4VSO125DRG/30R-PPB13N00
AA4VSO125EM1038/30R-PPB13N00
AA4VSO125EO2/30R-PPB13N00
AA4VSO125HD1/30R-PPB13N00
AA4VSO125HM2/30L-PPB13N00
AA4VSO125HM2/30R-PPB13N00
AA4VSO125HS3P/30R-PPB13N00
AA4VSO125LR2/30R-PPB13N00
AA4VSO125LR2D/30R-PPB13N00
AA4VSO125LR2DF/30R-PPB13N00
AA4VSO125LR2DM/30R-PPB13N00
AA4VSO125LR2G/30R-PPB13N00
AA4VSO125LR2G/30R-VPB13G80
AA4VSO125LR2GN/30R-PPB13N00
AA4VSO125LR2H/30L-PPB13N00
AA4VSO125LR2H/30R-PPB13N00
AA4VSO125LR2N/30R-PPB13K00
AA4VSO125LR2N/30R-PPB13N00
AA4VSO180DR/30L-PPB13N00
AA4VSO180DR/30R-PPB13N00
AA4VSO180DR/30R-VPB13N00
AA4VSO180EO2/30R-PPB13N00
AA4VSO180HS3E/30R-PZB13KB7
AA4VSO180HS3P/30R-PPB13N00
AA4VSO180LR2DF/30R-PPB13N00
AA4VSO180LR2G/30R-PPB13N00
AA4VSO180LR2G/30R-PPB25N00
AA4VSO180LR2N/30R-PPB13N00
AA4VSO180LR2S/30R-PPB13N00
AA4VSO250DP/30R-PPB13N00
AA4VSO250DR/30R-PPB13N00
AA4VSO250DR/30R-VPB13N00
AA4VSO250DRG/30R-PPB13N00
AA4VSO250DS1/30W-PPB13T031Z
AA4VSO250HD1/30R-PPB13N00
AA4VSO250HM1/30R-PPB13N00
AA4VSO250HM2/30R-PPB13N00
AA4VSO250HS/30R-PPB13N00
AA4VSO250HS3P/30L-PPB13N00
AA4VSO250HS3P/30R-PPB13N00
AA4VSO250LR2/30R-PPB13N00
AA4VSO250LR2D/30R-PPB13N00
AA4VSO250LR2G/30R-VPB13N00
AA4VSO250LR2GF/30L-PPB13N00
AA4VSO250LR2GF/30R-PPB13N00
AA4VSO250LR2GN/30R-PPB13K31
AA4VSO250LR2M/30R-PPB13N00
AA4VSO250LR2N/30R-PPB13N00
AA4VSO250LR2N/30R-PPB25K59
AA4VSO250LR2S/30R-PPB13N00
AA4VSO250LR3S/30R-PPB25N00
AA4VSO355DR/30R-PPB13N00
AA4VSO355EO2E/30R-PPB25N00
AA4VSO355LR2N/30R-PPB13N00
AA4VSO40DFR/10R-PPB13N00
AA4VSO40DR/10R-PPB13N00
AA4VSO40DRG/10R-PPB13N00
AA4VSO40DRG/10R-VPB13N00
AA4VSO40EO1/10R-PPB13N00
AA4VSO40LR2GN/10R-PZB13N00
AA4VSO40LR2N/10R-PZB13N00
AA4VSO40LR2Z/10R-PPB13N00
AA4VSO500HM2/30L-PPH13N00
AA4VSO500HS3/30R-PPH13N00
AA4VSO71DFR/10L-PPB13N00
AA4VSO71DFR/10R-PPB13N00
AA4VSO71DR/10R-PPB13N00
AA4VSO71DR/10R-VPB13N00
AA4VSO71DS/10W-PPB13T991Z
AA4VSO71EO1/10R-PPB13N00
AA4VSO71EO1/10R-PPB25K01
AA4VSO71FR/10L-PPB13N00
AA4VSO71FR/10R-PPB13N00
AA4VSO71HM2/10R-PPB13N00
AA4VSO71LR2/10R-PPB13C50
AA4VSO71LR2/10R-PPB13N00
AA4VSO71LR2D/10R-PPB13N00
AA4VSO71LR2H/10R-PPB13N00
AA4VSO71LR2N/10R-PPB13N00
AA7VO250LRDH1/63R-VPB02
AA7VO250LRDH3/63R-VPB01
AA7VO355HD1D/63R-VPH02
AA7V-SL1000EL51LZFOD-SO
AAA10VSO28DR/31R-PKC62N00
AAA10VSO45DFLR/31R-PKC62N00
AAA10VSO71DR/31R-PKC62N00
AAA10VSO140DR/31R-PKD62N00
AAA4VSO125DRG/30R-PKD63N00
A10CO45DFR/52R-VUC07H002D
A10VG45DGDM1/10R+A10VG45DGDM1/10R
A10VG45HWM1/10R-NSC10F016S-K
A10VO71DFR/31L-PSC12N00(RAL6014F9)
A10VO28DRG/52R+PGF3/022R+PGF2/008R
A10VO45DR/31L-VSC61N00
A10VO60DFR1/52R-PSD61N00
A10VSO28DRG/31R-PSA12K68
A10VSO100DFLR/31R+PGH2-2X/005R
A10VSO100DFR1/31R+A10VSO45DFR1/31R
A10VSO100DR/31R+A10VSO28DR/31R
A10VSO140DFLR/31R+A10VSO140DFLR/31R
A10VSO140DFR1/31R+A10VSO140DFR1/31R
A10VSO140DFR1/31R+A10VSO140DFR1/31R
A10VSO18DFR1/31R-PSC12N00
A10VSO18DRG/31R-VPA12K01
A10VSO18DRG/31R-VPA12K01
A10VSO18DRG/31R-VPA12N00
A10VSO28DFR1/31R-PPA12N00
A10VSO28DR/31R-PPA12K25
A10VSO28DR/31R-PSA12K57
A10VSO28DR/31R-PSA12N00
A10VSO45DFLR/31R+A10VSO18DFR/31R
A10VSO45DFR1/31R+A10VSO18DFR1/31R
A10VSO45DFR1/31R-PPA12K26
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00SO13
A10VSO45DR/31R+A10VSO18DR/31R
A10VSO45DR/31R-PPA12N00SO155
A10VSO71DFR1/31R+A10VSO18DR/31R
A10VSO71DFR1/31R-PPA12K02
A10VSO71DR/31R-PSA12KC1
A10VSO71DRG/31R+A10VSO28DRG/31R
A10VSO71DRG/31R-PPA12K25
A11VO130LR/10R-NPD12N00
A11VO190DR/11R-NPD12N00
A11VO190LR/11R-NPD12K24-K
A11VO190LRDG/11R-NPD12N00
A11VO260LR/11R-NPD12K24
A11VO260LRH1/11R-NPD12N00
A11VO260LRU2+A11VO260LRU2+A10VSO18DFR
A11VO40DR/10R-NPC12K02-SK
A11VO40DR/10R-NPC12N00V-S
A11VO75DRG/10R-NPD12N00
A11VO75DRG/10R-NSD12N00
A11VO95DR/10R-NPD12N00V-S
A2F5R6.0C7
A2F5/60W-B3
A2F5/60W-C3
A2FE45/61W-VAL100
A2FE56/61W-VAL100
A2FM10/61W-VBB040
A2FM10/61W-VPB030
2.轉(zhuǎn)速
工作轉(zhuǎn)速是指泵（或馬達(dá)）在工作時的實際轉(zhuǎn)動速度。
額定轉(zhuǎn)速是指在額定壓力下，能連續(xù)長時間正常運(yùn)轉(zhuǎn)的最高轉(zhuǎn)速。若泵超過額定轉(zhuǎn)速工作將會造成吸油不足，產(chǎn)生振動和大的噪聲，零件會遭受氣蝕損傷，壽命降低。
最低穩(wěn)定轉(zhuǎn)速是指馬達(dá)正常運(yùn)轉(zhuǎn)所允許的最低轉(zhuǎn)速。在此轉(zhuǎn)速下，馬達(dá)不出現(xiàn)爬行現(xiàn)象。
3.排量、流量
排量是指泵（或馬達(dá)）每轉(zhuǎn)一周，由密封容腔幾何尺寸變化而得的排出（或輸入）液體的體積，常用單位是ml/r（毫升/轉(zhuǎn)）。排量可以通過調(diào)節(jié)發(fā)生變化的成為變量泵（或變量馬達(dá)），排量不能變化的成為定量泵（或定量馬達(dá)）。
實際流量是指泵（或馬達(dá)）工作時出口處（或進(jìn)口處）的流量。由于泵本身存在內(nèi)泄漏，其實際流量小于理論流量。由于馬達(dá)本身也存在內(nèi)泄漏，要實現(xiàn)指定轉(zhuǎn)速，為補(bǔ)償泄漏量，其輸入實際流量必須大于理論流量。
4.效率
容積效率，對液壓泵是指其實際流量與理論流量的比值。對液壓馬達(dá)是指其理論流量與實際流量的比值。
機(jī)械效率，對液壓泵是指其理論轉(zhuǎn)矩與實際輸入轉(zhuǎn)矩的比值。對液壓馬達(dá)其實際輸出的轉(zhuǎn)矩為理論轉(zhuǎn)矩克服摩擦力后的轉(zhuǎn)矩，因此其機(jī)械效率為實際輸出轉(zhuǎn)矩與理論轉(zhuǎn)矩的比值。
總效率是指泵（或馬達(dá)）的輸出功率與輸入功率的比值?？傂实扔谌莘e效率與機(jī)械效率的乘積。
