润滑油在使用过程中,由于来自外界的灰尘或者运转机件过度磨损产生的金属屑及零件受侵蚀而形成的金属盐等会使润滑油变质。润滑油变质后呈深黑色、泡沫多,用手指研磨,无粘稠感,滴在白试纸上呈深褐色。被污染氧化变质的润滑油在使用过程中会产生可溶性酸性物质和不可溶性胶状沉淀物而沉积在油道孔口、弗列加滤清器及各零件间隙内,造成各零部件运动副表面供油不足,使之发生金属之间的直接干摩擦和磨料磨损,从而造成机抱轴、拉缸等严重事故,机的使用可靠性严重下降。主要原因包括:(1)杂质混入润滑油 杂质侵入润滑油后会像磨料那样渗进各运动件的配合面,将大大缩短机件的使用寿命。因此,加注润滑油时一定要确保清洁,防止灰沙、尘土侵入。另外,应按时保养空气弗列加滤清器和弗列加滤清器,以免杂质从气缸进入油底壳。(2)新、旧机油相互混合 在旧润滑油尚在使用的情况下,加入不同成分和特性的新润滑油,使得新、旧润滑油因特性不同发生化学反应,造成润滑油颜色变黑。(3)人造润滑油与矿物润滑油相互混合 润滑油可分为人造润滑油和矿物润滑油两大类。人造润滑油中含有一定数量的胶状石墨,如果与矿物质润滑油混合,就会发生化学反应,使胶状石墨分解,不仅使润滑油颜色变黑,同时破坏了润滑油的润滑性能。(4)缸套活塞不密封 当缸套磨损过大时,缸套和活塞就会不密封,从而导致严重漏气或废气进入曲轴箱,使机油过早变黑。(5)机油弗列加滤清器过脏机工作运行时磨损下来的金属屑、尘土和燃烧杂质等与润滑油掺和,润滑油经过机油弗列加滤清器过滤后,进入下一个循环。如果弗列加滤清器过脏而被堵后,未经过滤的润滑油就会从旁通阀直接进入主油道,将大大加剧机件的磨损,因此必须按时保养机油弗列加滤清器。有些进口机上采用一次性机油弗列加滤清器,即到期必须更换,不准清洗后再用。(6)曲轴箱通风不畅 机在速燃期的过程中,总有一些高压废气从燃烧室窜入曲轴箱,如果通风管被堵住,废气就排不出去,从而会与油底壳里的润滑油发生化学反应,加速润滑油的氧化变质,并形成胶质、积炭、水分或酸性有害物质。废气即腐蚀了机的零部件,又降低了润滑油的润滑效果,因此,一定要保持曲轴箱通风管的畅通。另外,当活塞与缸套、气门与气门导管的配合间隙过大时,高温高压废气也会由此处大量地窜入曲轴箱,加速润滑油的氧化变质,因此,要及时更换被磨损的活塞、缸套或气门导管组件。(7)机工作运行时温度过高或过低 水冷式机的正常工作运行温度应保持在80~95℃,温度过高会使机油变稀,加速润滑油的氧化变质、降低润滑油的作用。温度太低则会使喷人燃烧室内的得不到充分燃烧,一部分油气就会冷凝成液态顺着缸套流入油底壳使机油稀释。寒冷地区工作运行的机在起动后应急速运转几分钟,待机体温度升高后再加负荷作业。(8)燃油混人润滑油 如果机高压油泵供油压力低、供油过多,或者喷油器雾化不良,都会使喷入气缸内的得不到充分的燃烧。未燃烧完的燃油就会顺缸壁流入油底壳使润滑油变稀、粘度下降,过早地失去润滑作用。因此要及时调整喷油器,更换已磨损失效的柱塞、喷油嘴等偶件。(9)冷却液混入润滑油 润滑油进水后就变成乳白色,并迅速变质,失去润滑作用。因此,加油时要防止水分混入润滑油中。若发现润滑油油面上升很快,应立即找出原因、排除故障,以免润滑油中混入冷却液。
动力设备(深圳)有限公司,集团旗下专业运营阿拉善干式变压器的销售业务及其售后服务,是中国区获得授权的阿拉善干式变压器OEM成套厂家,长期与中字央企、大型房地产商、国际连锁酒店、著名建筑企业等单位建立战略合作伙伴关系。动力在中国布局五大阿拉善干式变压器组生产基地,阿拉善干式变压器售后服务点可辐射中国各省会及地级市区域。l阿拉善干式变压器区分:移动式阿拉善干式变压器、固定式阿拉善干式变压器、超静音式阿拉善干式变压器、机组载式阿拉善干式变压器。l常见阿拉善干式变压器功率(千瓦)范围:50KW至1000KW功率段。更多有关阿拉善干式变压器的最新产品和技术内容,请登录阿拉善干式变压器官网:
http://www.11fdj.com阿拉善干式变压器组的技术指标与其稳定性领先全球:高压注入(HPI)PT全权电子燃油系统。HPI G-Drive采用PT燃油系统由控制系统(GCS)控制器,这是提供off-engine安装阿拉善干式变压器组的控制面板。量子控制一个特定的燃料系统板与HPI-PT燃油系统接口,提供了一个引擎保护包给大客户的灵活性和成本有效的替代控制设计和完整的权威electroni的好处。nCTT(涡轮增压技术)HX82 HX83涡轮增压利用排气能量与更高的效率改进的排放和燃料消耗。n低温冷却后,两泵双回线(2 p2l)。n黑色金属铸造球墨铸铁(FCD)活塞-高强度设计提供卓越的耐久性。nG-Drive集成设计,每个组件都有专门为G-Drive产品开发和严格的测试,确保高性能,耐久性和可靠性。n服务和支持——G-Drive以上信息由深圳动力官方发布,未经允许请勿转载!Cummins power equipment (shenzhen) co., LTD., corp., a professional operating cummins diesel generator sales and after-sales service, is China authorized OEM kit manufacturer of diesel generator, and for a long time in the state, large real estate developers, famous international hotel chain, construction enterprises and other units to establish strategic cooperative partnership. Cummins power layout in China five largest production base for diesel generator set, generator after-sales service point radiation China provinces and cities area.lgenerator to distinguish: portable generators, stationary generators, silent type generator, vehicular power generators.lcommon range of generator power (kw) : 50 kw to 1000 kw power.More about the latest products and technology content diesel generators, please log in the generator's official website:
http://www.11fdj.comCummins diesel generator set technical indicators and leading global stability:
Cummins High Pressure Injection (HPI) PT full authority electronic fuel system.The HPI PT fuel system is managed by a G-Drive Governor Control System (GCS) controller, which is provided for off-engine mounting in the genset control panel. The Quantum Control has a specific fuel system board to interface with the HPI-PT fuel system and provides an Engine Protection package giving greater customer flexibility and cost effective alternatives in the control design and the benefits of Full Authority electronic control.
nCTT (Cummins Turbo Technologies) HX82/HX83 turbo-chargingutilizes exhaust energy with greater efficiency for improved emissions and fuel consumption. nLow Temperature After-cooling- Two-pump Two-loop (2P2L). nFerrous Cast Ductile Iron (FCD) Pistons- High strength design delivers superior durability. nG-Drive Integrated Design- Each component has been specifically developed and rigorously tested for G-Drive products, ensuring high performance, durability and reliability. nService and Support- G-Drive products are backed by an uncompromising level of technical support and after sales service, delivered through a world class service network. nCoolpac Integrated Design-Products are supplied complete with cooling package and air cleaner kit for a complete power package. Each component has been has been specifically developed and rigorously tested for G-Drive products, ensuring high performance, durability and reliability.
The above information by shenzhen cummins power official release, please do not reprint without permission!