美孚佳特L540
柴油機(jī)氣缸油
產(chǎn)品描述
美孚佳特L540由?？松梨谑莾?yōu)質(zhì)、高性能的船用柴油機(jī)汽缸油。這種獨(dú)特的配方已被專門開發(fā)的引擎在低硫重質(zhì)燃料油（重油）運(yùn)行環(huán)境。這種氣缸潤滑油在今天的現(xiàn)代十字頭機(jī)較高的工作溫度和壓力為粘合劑和腐蝕磨損最大限度的保護(hù)，高可靠性。它采用添加劑具有更大的熱穩(wěn)定性和優(yōu)良的酸腐蝕保護(hù)。它有一個最佳粘度超過20厘。在100oC和低波動率分布和膜保留最好的潤滑劑。通過獨(dú)特的配方技術(shù)的使用，達(dá)到較高的粘度，很少或沒有使用熱不太穩(wěn)定，存款生產(chǎn)明亮的股票。在40 TBN堿度水平美孚佳特L540先進(jìn)技術(shù)展現(xiàn)了優(yōu)異的活塞環(huán)和缸套的磨損保護(hù)和清潔在持續(xù)運(yùn)行和燃料中的硫含量從不足0.3%增加到1.5%。
特點(diǎn)和優(yōu)點(diǎn)
美孚佳特L540汽缸油提供以下功能和潛在的好處：
功能優(yōu)勢和潛在的好處
具有良好的熱穩(wěn)定性和氧化穩(wěn)定性，減少沉積物和污泥的形成
延長油品壽命
清潔發(fā)動機(jī)需要大修時間減少糊
卓越的抗磨性能降低缸套和活塞環(huán)的磨損
優(yōu)異的抗劃傷的控制
出色的去污能力出眾的活塞和缸套之間延伸，提高燃燒效率和清潔活塞檢修周期
高粘度指數(shù)基礎(chǔ)油氣缸油消耗降低和穩(wěn)定
應(yīng)用
美孚佳特L540已發(fā)展為提高功率和燃油效率的海洋十字頭機(jī)。這樣的發(fā)動機(jī)表現(xiàn)出較高的溫度和壓力，在氣缸中，從而降低了潤滑劑的粘度，增加它必須承受的負(fù)載。較長的活塞沖程大大增加了表面被保護(hù)的數(shù)量和時間的潤滑劑必須承受嚴(yán)重的缸內(nèi)溫度和腐蝕性的硫酸。美孚佳特L540也在早期的發(fā)動機(jī)的設(shè)計(jì)表現(xiàn)出卓越的性能。
為了確保實(shí)現(xiàn)最大的設(shè)備壽命，特別要注意的是制造商的特殊建議，關(guān)于運(yùn)行在新的環(huán)和襯墊。
美孚佳特L540是專為使用在燃料中的硫含量從小于0.3%到1.5%的應(yīng)用。應(yīng)用中的含硫量高于1.5%需要特別考慮，應(yīng)該與你的?？松梨诖碛懻摗?br />
在所有情況下，通過檢查襯墊的端口，以確保足夠的油膜，應(yīng)驗(yàn)證適當(dāng)?shù)倪M(jìn)給速率。
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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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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