詳細內容：當凸輪頂?shù)綕L輪體的滾輪上時，柱塞便升起。從柱塞開始間向上運動到油孔被柱塞上端面擋住前為止。在這一段時間內，由于柱塞的運動，燃油從油室被擠出，流向油道。所以這段升程稱為預行程。當柱塞將油孔擋住時，便開始壓油過程。柱塞上行，油室內油壓急劇升高 聯(lián)系人：蔡韻17771783950 手機：一八七七一零二二八二九 手機：17771783950/18771022829 qq3121226951/1287946729 傳真：02759109675 565383 KFDG4V-3-33C20N-Z-M-U1-H7-20 02-145959 KCG-3-350D-Z-M-U-H1-10 02-341630 PVQ13-A2R-SS1S-20-C14-12 02-127344 DG17V-3-2N-60 123AL00689A PVM131ER10GS04AAA28000000A0A BR210-1 DIRT-GATE LESS TDXJ3-D0L20/10N/E0K11 DXJ3-D0L40/10N/E0K11 DXJ5-D0L060/10N/E0K11 DXJ5-D0L100/10N/E0K11 意大利DUPLOMATIC(迪普馬) 意大利DUPLOMATIC(迪普馬) 迪普馬DUPLOMATIC液壓元件 DUPLOMATIC液壓元件 迪普馬DUPLOMATIC葉片泵 DUPLOMATIC葉片泵 迪普馬DUPLOMATIC齒輪泵 DUPLOMATIC齒輪泵 迪普馬DUPLOMATIC電磁閥 DUPLOMATIC電磁閥 迪普馬DUPLOMATIC防爆電磁閥 DUPLOMATIC防爆電磁閥 迪普馬DUPLOMATIC柱塞泵 DUPLOMATIC柱塞泵 迪普馬DUPLOMATIC液壓閥 DUPLOMATIC液壓閥 迪普馬DUPLOMATIC疊加閥 DUPLOMATIC疊加閥 迪普馬DUPLOMATIC比例閥 DUPLOMATIC比例閥 迪普馬DUPLOMATIC電磁溢流閥 DUPHAN 572267 CS-06-F-50 190249 DS8P1-10-5-11WDHE-06719,WDHE-06793,WDHE-06739,WDHE-06794,安全閥 WDHE-06749,WDHE-06716,WDHE-06717,WDHE-06758,,安全閥 WDHE-0672/7,WDHE-0675/7,WDHE-0676/7,WDHE-0677/7,安全閥 WDHE-0710/02,WDHE-0711/12,WDHE-0712/22,安全閥 WDHE-0713,WDHE-0714,WDHE-0715,WDHE-0716,安全閥 WDHE-0717,WDHE-0718,WDHE-07190,WDHE-07109,安全閥 WDHE-07191,WDHE-07119,WDHE-07193,WDHE-07139,安全閥 WDHE-07194,WDHE-07149,WDHE-07116,WDHE-07117,安全閥 WDHE-07158,WDHE-0712/7,WDHE-0715/7,WDHE-0716/7,安全閥 WDHE-0717/7,WDHE-0750/2,WDHE-0751/2,WDHE-0630/2,安全閥 WDHE-0631/2,WDKE-1610/02,WDKE-1610/12,WDKE-1612/2,安全閥 WDKE-1613,WDKE-1614,WDKE-1615,WDKE-1616,安全閥 WDKE-1617,WDKE-1618,WDKE-16191,WDKE-16119,安全閥 WDKE-16193,WDKE-16139,WDKE-16158,WDKE-1612/7,安全閥 WDKE-1615/7,WDKE-1670/02,WDKE-1670/12,WDKE-1672/2,安全閥 WDKE-1673,WDKE-1674,WDKE-1675,WDKE-1676,安全閥 WDHE-0631/2,WDKE-1610/02,WDKE-1610/12,WDKE-1612/2,安全閥 02-304074 DICPFS-08-05-10 02-119493 DG4S4LW-012C-B-60 02-119575 DG4S4LW-012N-B-60 02-125622-U 45VTCS42A 2203DA 22R 857574 MVB5-UDY-21-M-10 573247-7 V20P-1S11T-1C6H-12-LH 02-341372 PVH131R13AF30A250000002001AE010A 02-332769 DG5V-7-31C-2-M-U-H5-40 708150 FN-03-20-B 877429 PVH057R01AA10A250000001AE1AB010A 02-102110 PVH074R13AA10A250000001AF1AB010A 566246 RV5-10-S-0-35/ 666147 DGMX1-3-PPBW-20-JA-S5 300AA00086A MCSCJ230AG000010 02-113006 FCV7-10-S-0-FF 638681 CVUA-6-PDW-2-M-U-H-10 565665 SV4-10-C-0-24DG 565615 CV3-10-P-0-3 857401 PVB5-RSY-21-CC-11 668658 DG4V-5-2A-MP7-LB6-40