美孚佳特L540
柴油机气缸油
产品描述
美孚佳特L540由埃克森美孚是优质、高性能的船用柴油机汽缸油。这种独特的配方已被专门开发的引擎在低硫重质燃料油（重油）运行环境。这种气缸润滑油在今天的现代十字头机较高的工作温度和压力为粘合剂和腐蚀磨损最大限度的保护，高可靠性。它采用添加剂具有更大的热稳定性和优良的酸腐蚀保护。它有一个最佳粘度超过20厘。在100ºC和低波动率分布和膜保留最好的润滑剂。通过独特的配方技术的使用，达到较高的粘度，很少或没有使用热不太稳定，存款生产明亮的股票。在40 TBN碱度水平美孚佳特L540先进技术展现了优异的活塞环和缸套的磨损保护和清洁在持续运行和燃料中的硫含量从不足0.3%增加到1.5%。
特点和优点
美孚佳特L540汽缸油提供以下功能和潜在的好处：
功能优势和潜在的好处
具有良好的热稳定性和氧化稳定性，减少沉积物和污泥的形成
延长油品寿命
清洁发动机需要大修时间减少糊
卓越的抗磨性能降低缸套和活塞环的磨损
优异的抗划伤的控制
出色的去污能力出众的活塞和缸套之间延伸，提高燃烧效率和清洁活塞检修周期
高粘度指数基础油气缸油消耗降低和稳定
应用
美孚佳特L540已发展为提高功率和燃油效率的海洋十字头机。这样的发动机表现出较高的温度和压力，在气缸中，从而降低了润滑剂的粘度，增加它必须承受的负载。较长的活塞冲程大大增加了表面被保护的数量和时间的润滑剂必须承受严重的缸内温度和腐蚀性的硫酸。美孚佳特L540也在早期的发动机的设计表现出卓越的性能。
为了确保实现最大的设备寿命，特别要注意的是制造商的特殊建议，关于运行在新的环和衬垫。
美孚佳特L540是专为使用在燃料中的硫含量从小于0.3%到1.5%的应用。应用中的含硫量高于1.5%需要特别考虑，应该与你的埃克森美孚代表讨论。
在所有情况下，通过检查衬垫的端口，以确保足够的油膜，应验证适当的进给速率。
Mobilgard L540
Diesel Engine Cylinder Oil
Product Description
Mobilgard L540 by ExxonMobil is a superior quality, extra high performance marine diesel engine cylinder oil. This unique formulation has been specifically developed for engines running in a low sulphur heavy fuel oil (HFO) environment. This cylinder lubricant provides maximum protection from adhesive and corrosive wear at the higher operating temperatures and pressures of today's modern crosshead engines, for maximum reliability. It employs additives with greater therrmal stability and superior acid-corrosion protection. It has an optimum viscosity of over 20 cSt. at 100ºC and low volatility for best lubricant distribution and film retention. Through the use of unique formulation technology, the higher viscosity is attained with little or no use of thermally less stable, deposit-producing bright stock. Advanced technology at the 40 TBN alkalinity level in Mobilgard L540 has demonstrated excellent ring and liner wear protection and cleanliness under sustained operation with fuel sulphur levels from less than 0.3% up to 1.5%.
Features and Benefits
Mobilgard L540 cylinder oil offers the following features and potential benefits:
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Features
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Advantages and Potential Benefits
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Excellent thermal and oxidation stability
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Reduced deposits and sludge formation
Extended oil life
Cleaner engine reduces lay-up time required for overhauls
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Exceptional antiwear properties
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Reduced liner and ring wear
Excellent anti-scuffing control
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Outstanding detergency capability
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Superior piston and liner cleanliness increases combustion efficiency and extends periods between piston overhauls
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High Viscosity Index and stable basestocks
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Reduced cylinder oil consumption
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Applications
Mobilgard L540 has been developed for marine crosshead engines with increased power and fuel efficiency. Such engines exhibit higher temperatures and pressures in the cylinder, which reduce the lubricant's viscosity and increase the loads which it must withstand. Longer piston strokes have greatly increased the amount of surface to be protected and the amount of time the lubricant must withstand the severe cylinder temperatures and corrosive sulphur acids. Mobilgard L540 has also demonstrated superior performance in earlier engine designs.
To ensure achieving the maximum equipment life possible, particular attention should be paid to the manufacturer's special recommendations regarding the running-in of new rings and liners.
Mobilgard L540 was specially formulated for use in applications with fuel sulphur levels ranging from less than 0.3% up to 1.5%. Applications where the sulphur level is above 1.5% require special consideration and should be discussed with your ExxonMobil representative.
Appropriate feed rates should be verified in all cases by through-the-ports inspection of liners to ensure adequate oil film.
Typical Properties
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SAE Grade
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50
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Specific Gravity at 15ºC
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0.917
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Flash Point, ºC, ASTM D 92
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264
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Pour Point, ºC, ASTM D 97
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-6
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Viscosity, ASTM D 445
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|
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cSt, at 40ºC
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236
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cSt, at 100ºC
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21
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Viscosity Index, ASTM D 2270
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105
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TBN, mg KOH/g, ASTM D 2896
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40
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