适用于MAN21/31水套部套号50507-03水套的作用是将发动机燃烧室和缸体内壁的温度通过热传导将热能转移到冷却液由于液体是可流动的经过水泵循环到散热器由散热器通过外界空气的流动给冷却液散热，MAN四冲程原厂，再由散过热冷却液循环到发动机水套接收发动机工作时产生的热量的，如此循环。总结一下就是转移热能。螺丝Screw50507-03-018水套Waterguidejacket50507-03-031垫片Gasket50507-03-043O型圈O-ring50507-03-055圆柱销CylindricalPin50507-03-067连接件Connectingpiece50507-03-079适用于MAN21/31燃油喷射泵部套号51401-09导套总成Rollerguide，MAN四冲程，completeincl.51401-09-014导套Roller51401-09-026*滚针Rollerpin51401-09-038*导套Rollerguide51401-09-051*螺栓Bolt51401-09-063*泵总成Pumpelement，completeincl.51401-09-087筒Barrel51401-09-099*柱塞Plunger51401-09-109*O型圈O-ring51401-09-110O型圈O-ring51401-09-158垫片Shim51401-09-183泵壳Pumpcasing51401-09-229连接插座总成Connectingsocketcompleteincl.51401-09-230缓冲螺栓Bufferbolt51401-09-242弹簧板Springplate51401-09-278泵弹簧Pumpspring51401-09-291螺栓Bolt51401-09-349密封Sealing51401-09-386垫圈Lockwasher51401-09-494燃油喷射泵总成FuelInjectionPump，complete51401-09-565圆柱销Cylindricalpin51401-09-577支撑环Supportring51401-09-697卡簧Circlip51401-09-756密封圈Sealring51401-09-768利用高压工作流体的喷射作用来输送流体的泵。由喷嘴、混合室和扩大管等构成。油嘴Injectionnozzle51402-10-021O型圈O-ring51402-10-033油嘴螺母Nozzlenut51402-10-045螺栓Pressurebolt51402-10-057压力弹簧Pressurespring51402-10-070螺母Nut51402-10-082圆柱销Cylindricalpin51402-10-094燃油喷射阀总成Fuelinjectionvalve，completeincl.51402-10-116喷嘴座Nozzleholder51402-10-128*压力块Pressurepiece51402-10-141垫圈Washer51402-10-165螺栓Bolt51402-10-177导管Guideforspring51402-10-190油嘴座总成Nozzleholdercomp.51402-10-212衬套Bush51402-10-224*ME型柴油机是MANBW公司开发的智能柴油机。ELFI(ELectronicFuelIniection)阀是ME—B型柴油机的电喷系统中控制喷油定时和喷油量以及喷油压力的部件。目前，这种类型柴油机的市场占有率约为70%。MAN四冲程-中舟船舶-MAN四冲程活塞环由秦皇岛中舟船舶机械进出口有限公司提供。行路致远，砥砺前行。秦皇岛中舟船舶机械进出口有限公司致力成为与您共赢、共生、共同前行的战略伙伴，更矢志成为船舶及配件具有竞争力的企业，与您一起飞跃，共同成功!)