CN108350773A - 用于对机动车辆的驱动系统进行单独润滑的方法 - Google Patents

用于对机动车辆的驱动系统进行单独润滑的方法 Download PDF

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CN108350773A
CN108350773A CN201680065322.1A CN201680065322A CN108350773A CN 108350773 A CN108350773 A CN 108350773A CN 201680065322 A CN201680065322 A CN 201680065322A CN 108350773 A CN108350773 A CN 108350773A
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lubricating
lubricating composition
lubricated
engine
composition
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皮埃尔·达夫哈
尼古拉·欧伯来
朱立安·葛汉
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TotalEnergies Marketing Services SA
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Total Marketing Services SA
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/02Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 having means for introducing additives to lubricant
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    • C10M129/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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    • F02B39/00Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
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    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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    • C10N2040/00Specified use or application for which the lubricating composition is intended
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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Abstract

本申请涉及一种用于对机动车辆的驱动系统进行单独润滑的方法,所述系统包括压缩机和内燃发动机,所述内燃发动机包括耦合在一起的顶端和底端,所述方法包括:‑用具有由式(X)W‑(Y)定义的SAE J300等级的润滑组合物CL1来润滑底端,其中X代表0或5且Y代表4,8,12,16或20;‑用不同于润滑组合物CL1的润滑组合物CL2来润滑顶端;以及‑用润滑组合物CL2或与润滑组合物CL1和CL2不同的润滑组合物CL3来润滑压缩机。

Description

用于对机动车辆的驱动系统进行单独润滑的方法
【技术领域】
本发明涉及一种用于对机动车辆的驱动系统进行单独润滑的润滑方法。
【背景技术】
驱动系统的润滑组合物必须满足有时矛盾的多种目标。这些目标源于发动机润滑组合物的五个主要功能,即润滑、冷却、密封、防腐蚀和压力传递。
相互滑动的组件/部分的润滑起着关键的决定作用,特别是用于减少摩擦和磨损,由此特别允许用于节省发动机燃料。
用于驱动系统的润滑组合物的另一个基本要求涉及与环境有关的方面。事实上,减少汽车燃料消耗,特别是在以减少二氧化碳排放量为意图的情况下,已经变得至关重要。同样重要的是减少有害气体的排放,例如通过以这样的方式配制润滑组合物,使得催化剂在其整个寿命期间保持完全的功能。同样重要的是,限制或避免使用有毒添加剂,以减少或限制它们的消除,例如通过再加工、后处理或燃烧的方式。
因此,用于驱动系统的润滑组合物的性质对污染物排放和汽车燃料消耗具有影响。根据公认的术语,通常将能够实现节能的用于驱动系统的润滑组合物称为“燃料经济性(Fuel economy)”(FE)。为了满足这些新的需求,开发了这种“燃料经济性”油。
大多数当前的机动车辆配备有一个驱动系统,在该驱动系统中使用单一润滑组合物来润滑所述驱动系统的各种不同的组成部件。
然而,在同一给定的驱动系统中要润滑的各种组件的特性特征和约束是不同的。由于目前使用单一润滑组合物的做法,单一润滑组合物并不特别适用于待润滑的不同部件,而是在待润滑的部件的所有的特性特征和约束之间呈现折衷。因此,在燃料经济性上获得的增益并不是最优的。
因此,有兴趣开发能够提供用于对各种不同的组成部件进行单独润滑的驱动系统,并开发用于对驱动系统的不同的组成部件进行单独润滑的润滑方法。
【发明内容】
本发明的一个目的是使得能够在用于机动车辆的驱动系统的润滑中实现燃料经济性上的显着增益,特别是燃料经济性上的至少3%的增益。
本发明的另一个目的是使所述用于机动车辆的所述驱动系统中的特定于且适于待润滑的各种不同的组成部件的润滑组合物的操作实施成为可能。
通过阅读下面对本发明的描述,其它目的将变得显而易见。
这些目的通过本发明实现,其提供了一种用于对机动车辆的驱动系统进行单独润滑的润滑方法,所述系统包括内燃发动机,所述内燃发动机包括耦合在一起的发动机顶部部分(或顶端)和发动机底部部分(或底端),所述方法包括:
-用具有由式(X)W-(Y)定义的SAE J300等级的润滑组合物(CL1)来润滑发动机底部部分,其中X代表0或5且Y代表4,8,12,16或20;以及
-用不同于润滑组合物(CL1)的润滑组合物(CL2)来润滑发动机顶部部分。
在本发明的上下文中,术语“单独润滑”被理解为指示如下的事实:根据待润滑的组成部件存在单独的润滑组合物,典型地为至少两种单独的润滑组合物,一种用于润滑发动机顶部部分(顶端)的元件,另一种用于润滑发动机底部部分(底端)的元件。以有利的方式,如下所示,驱动系统包括至少两个单独的润滑系统,其中一个供应发动机顶部部分,第二个供应发动机底部部分。
在本发明的上下文中,术语“分离的润滑组合物”或“不同的润滑组合物”被理解为是指通过它们的组成元素,特别是通过它们的组成元素的性质,和/或通过组合物的各种不同的组成元素的比例来彼此区分的润滑组合物。
在一种有利的方式中,这种方法使得有可能在发动机底部部分和发动机顶部部分处对润滑剂进行优化。
在本发明的上下文中,术语“发动机顶部部分”(顶端)被理解为指由组装在发动机底部部分上的汽缸盖或多个汽缸盖构成的发动机的部分。汽缸盖是用于通过进气管和进气阀来在燃烧室中分配进气并且用于通过排气管和排气阀来排出燃烧气体的座。
在本发明的上下文中,术语“发动机底部部分”(底端)被理解为是指包括在包含气缸的“发动机机体”和包含发动机润滑剂的壳体内的可移动联接器(连杆,活塞和曲轴)的发动机的部分。
“发动机底部部分”和“发动机顶部部分或多个顶部部分”之间的边界表现在气缸盖的一个或多个密封件中。
在下面的部分中,术语“顶部”、“上部”及其等同物被用来表示当车辆处于使用位置时垂直朝向车辆顶部的方向,在使用位置中车辆例如是静止在地面上的。术语“底部”、“下部”及其等同物用于表示相反的方向。
作为变体,本发明也可应用于具有与上述驱动系统的示例不同的空间配置的发动机,特别是所谓的“平置式(flat)”发动机。可以理解的是,在这些特定的发动机的情况下,发动机顶部部分不一定被放置在发动机底部部分的上方。因此,在这些特定发动机的情况下,上文定义的术语“发动机顶部部分”用于指特别是配备有一个或多个控制轴和分配系统的气缸盖,术语“发动机底部部分”用于指曲轴箱以及发动机机体,特别是配备有活塞、连杆、曲轴、气缸和燃烧室。
在一个特定实施例中,本发明涉及一种用于对机动车辆的驱动系统进行单独润滑的润滑方法,所述系统包括压缩机,优选涡轮压缩机,内燃发动机,所述内燃发动机包括耦合在一起的发动机顶部部分和发动机底部部分,所述方法包括:
-用具有由式(X)W-(Y)定义的SAE J300等级的润滑组合物(CL1)来润滑发动机底部部分,其中X代表0或5且Y代表4,8,12,16或20;
-用与润滑组合物(CL1)不同的润滑组合物(CL2)来润滑发动机顶部部分;以及
-用润滑组合物(CL2)或用与润滑组合物(CL1)和(CL2)不同的润滑组合物(CL3)来润滑压缩机。
优选地,在本发明的上下文中,组合物(CL1)具有选自0W-4,0W-8,0W-12,0W-16,0W-20,5W-4,5W-8,5W-12,5W-16或5W-20,优选地选自0W-8,0W-12,0W-16,0W-20,5W-8,5W-12,5W-16或5W-20的SAE J300等级。
优选地,在本发明的上下文中,组合物(CL1)在150℃下具有至多等于2.9mPa.s,优选地包括在1.4mPa.s和2.75mPa.s之间、优选地包括在1.7mPa.s和2.75mPa.s之间的HTHS(高温高剪切粘度测量)。
根据标准化方法CEC-L-36-A-90、ASTM D4683和ASTM4741,在高剪切(106sec-1)和高温下执行HTHS测量。
优选地,根据本发明的组合物(CL1),(CL2)和(CL3)包含至少一种基础油和添加剂,应理解组合物(CL1),(CL2)和(CL3)彼此不同也就是说它们包含不同的基础油和/或不同的添加剂和/或不同比例的基础油和/或添加剂。
根据本发明的润滑组合物中使用的基础油可以是矿物油或合成油,其属于根据在美国石油学会(API)分类中定义的类别的I至V组((或根据Association Technique de L'Industrie Européenne des Lubrifiants/欧洲润滑剂工业技术协会(ATIEL)分类的其等同物)(表A)或其混合物。
本发明的矿物基础油包括通过原油的常压和真空蒸馏,随后进行诸如溶剂萃取、脱沥青、溶剂脱蜡、加氢处理、加氢裂化、加氢异构化和加氢精制之类的精炼操作而获得的所有类型的基础油。
也可以使用合成油和矿物油的混合物。
根据本发明的润滑组合物的基础油也可以从诸如某些羧酸酯和醇酯之类的合成油中以及从聚α-烯烃中选择。作为基础油的聚α-烯烃例如是从含有4至32个碳原子的单体而获得的,例如来自辛烯或癸烯,并且根据根据美国测试和材料协会标准ASTM D445,其在100℃(Kv100)的运动粘度包括在1.5mm2.s-1和15mm2.s-1之间。根据ASTM D5296标准,它们的平均分子量一般包括在250和3000之间。
相对于组合物的总重量,根据本发明的润滑组合物可以包括至少50%重量的基础油。以更有利的方式,根据本发明的润滑组合物相对于组合物的总重量包含至少60%重量,或甚至至少70%重量的基础油。以特别更有利的方式,相对于组合物的总重量,根据本发明的润滑组合物包含75-99.9%重量的基础油。
用于根据本发明的润滑组合物的优选添加剂选自洗涤添加剂、抗磨添加剂、摩擦改性添加剂、极压添加剂、分散剂、倾点改进剂、消泡剂、增稠剂及其混合物。
在优选的方式中,根据本发明的润滑组合物包含至少一种抗磨添加剂,至少一种极压添加剂或其混合物。在特别优选的方式中,润滑组合物(CL1)不包含任何抗磨添加剂。
抗磨添加剂和极压添加剂通过形成被吸附在这些表面上的保护膜来保护摩擦接触的表面。
抗磨添加剂种类繁多。在优选的方式中,对于根据本发明的润滑组合物而言,抗磨添加剂选自磷硫化添加剂,诸如金属烷基硫代磷酸酯,特别是烷基硫代磷酸锌,并且更具体地是二烷基二硫代磷酸锌或ZnDTP。优选的化合物是具有式Zn(SP(S)(OR7)(OR8))2的化合物,其中R7和R8可以是相同的或不同的,独立地代表烷基,优选是具有1至18个碳原子的烷基。胺磷酸酯也是抗磨损添加剂,其可用于根据本发明的润滑组合物中。然而,这些添加剂所提供的磷可能对汽车的催化系统起毒害作用,因为这些添加剂容易产生灰烬。通过用不贡献任何磷的添加剂部分地取代胺磷酸酯,诸如例如多硫化物,特别是硫化烯烃,可以将这些效应最小化。
以有利的方式,相对于润滑组合物的总重量,根据本发明的润滑组合物可以包含0.01-6%重量,优选0.05-4%重量,更优选0.1-2%重量的抗磨添加剂和极压添加剂。在特别优选的方式中,润滑组合物(CL1)不包含任何抗磨添加剂。有利地,润滑组合物(CL1)不包括诸如ZnDTP(二硫代磷酸锌),MoDTP(二硫代磷酸钼)或硫化烯烃之类的任何抗磨添加剂。
以有利的方式,根据本发明的润滑组合物可以包含至少一种摩擦改性添加剂。摩擦改性添加剂可以选自提供金属元素的化合物和不含灰分的化合物。在提供金属元素的化合物中,可以涉及过渡金属络合物如Mo,Sb,Sn,Fe,Cu,Zn,其配位体可以是含有氧,氮,硫或磷原子的烃化合物。无灰的摩擦改性添加剂通常是具有有机来源的,并且可以选自脂肪酸和多元醇的单酯,烷氧基化胺,烷氧基化脂肪胺,脂肪环氧化物,硼酸化脂肪环氧化物;脂肪胺或脂肪酸甘油酯。根据本发明,脂肪族化合物包含至少一个具有10至24个碳原子的烃基。
以有利的方式,根据本发明的润滑组合物可包含相对于润滑组合物总重量的0.01至2%重量或0.01至5%重量,优选0.1至1.5%重量或0.1至2%重量的摩擦改性添加剂。
以有利的方式,根据本发明的润滑组合物可以包括至少一种抗氧化剂添加剂。
抗氧化剂添加剂通常提供延迟使用中的润滑组合物降解的手段。这种降解特别是可能以沉积物的形成,由污泥的存在或由润滑组合物粘度的增加而反映的。
抗氧化剂添加剂特别用作自由基抑制剂或氢过氧化物的驱除剂。在通常使用的抗氧化添加剂的类型中,可以涉及酚类抗氧化添加剂,胺抗氧化添加剂,磷硫酚抗氧化添加剂。这些抗氧化添加剂中的某些,诸如磷硫抗氧化添加剂可能容易产生灰烬。酚类抗氧化添加剂可以不含灰分,或者确实是以中性或碱性金属盐的形式。抗氧化添加剂可选自位阻酚,包括硫醚桥的位阻酚和阻酚酯,二苯胺,被至少一个C1-C12烷基取代的二苯胺,N,N'-二烷基-芳基二胺及其混合物。
优选地,根据本发明,位阻酚选自包含酚基的化合物,其中至少一个与带有醇官能团的碳相邻的碳原子被至少一个C1-C10烷基取代,优选为C1-C6烷基,优选为C4烷基,优选地被叔丁基取代。
胺化合物是可以使用的另一类抗氧化添加剂,可能与酚类抗氧化添加剂组合使用。胺化合物的示例是芳族胺,例如具有式NRa Rb Rc的芳族胺,其中Ra表示可能被取代的脂族基团或芳族基团,Rb表示可能被取代的芳族基团,Rc表示氢原子,烷基,芳基或具有式RdS(O)zRe的基团,其中Rd代表亚烷基或亚烯基,Re代表烷基,烯基或芳基,并且z代表0,1或2。
硫化烷基酚或其碱金属盐和碱土金属盐也可用作抗氧化添加剂。
另一类抗氧化添加剂是铜化合物,例如硫代或二硫代磷酸酯的铜、铜盐和羧酸盐、二硫代氨基甲酸酯、磺酸盐、酚盐、乙酰丙酮铜。还可以使用铜(I)和铜(II)盐、酸盐或琥珀酸酐盐。
根据本发明的润滑组合物可以包含本领域技术人员已知的所有类型的抗氧化添加剂。
以有利的方式,润滑组合物包括至少一种无灰抗氧化添加剂。
同样以有利的方式,根据本发明的润滑组合物包括相对于组合物总重量的0.1至2%重量的至少一种抗氧化添加剂。
根据本发明的润滑组合物还可以包括至少一种洗涤添加剂。
洗涤剂添加剂通常能够通过溶解氧化和燃烧的二次产物来减少在金属部件表面上的沉积物的形成。
在根据本发明的润滑组合物中使用的洗涤添加剂通常是本领域技术人员所熟知的。洗涤添加剂可以是包括亲油性长烃链和亲水性头的阴离子化合物。相关的阳离子可以是碱金属或碱土金属的金属阳离子。
洗涤添加剂优选地选自羧酸的碱金属盐或碱土金属盐、磺酸盐、水杨酸盐、环烷酸盐,以及酚盐的盐。碱金属和碱土金属优选地为钙、镁、钠或钡。
这些金属盐通常含有以化学计量的量或实际上过量的金属,因此在量上超过化学计量的量。于是这些是高碱性洗涤添加剂;向洗涤添加剂提供高碱性特征的过量的金属于是通常为以在油中不溶的金属盐的形式,例如碳酸盐,氢氧化物,草酸盐,乙酸盐,谷氨酸盐,优选地为碳酸盐。
以有利的方式,相对于润滑组合物的总重量,根据本发明的润滑组合物可以包括0.5至8%重量或2至4%重量的洗涤添加剂。
以同样有利的方式,根据本发明的润滑组合物还可以包括至少一种倾点抑制添加剂(倾点抑制剂PPD)。
通过减缓石蜡晶体的形成,倾点抑制添加剂通常改善根据本发明的润滑组合物的低温性能。
作为倾点抑制添加剂的示例,可以提及烷基聚甲基丙烯酸酯,聚丙烯酸酯,聚芳基酰胺,聚烷基酚,聚烷基萘,烷基化聚苯乙烯。
以有利的方式,根据本发明的润滑组合物也可以包括至少一种分散剂。
分散剂可以选自曼尼希(Mannich)碱,琥珀酰亚胺及其衍生物。
同样以有利的方式,相对于润滑组合物的总重量,根据本发明的润滑组合物可以包含0.2至10%重量的分散剂。
以有利的方式,润滑组合物还可以包含至少一种改善粘度指数的聚合物。作为聚合物粘度指数改进剂的示例,可以涉及苯乙烯、丁二烯和异戊二烯的氢化或未氢化的聚合酯、均聚物或共聚物,聚甲基丙烯酸酯(PMA),。以同样有利的方式,本发明的润滑组合物可以包含相对于润滑组合物的总重量的1至15%重量的聚合物粘度指数改进剂。
例如,组合物(CL1)是0W-20级组合物,例如Quartz 9000Future或Quartz V-drive
例如,组合物(CL2)是5W-30级组合物,例如石英Ineo MC3
例如,组合物(CL3)是5W-40级组合物,例如Quartz 9000
【附图说明】
图1是能够实现根据本发明的方法的驱动系统的示意图。
图2是能够实现根据本发明的方法的驱动系统的示意图。
【具体实施方式】
在图1中示出的驱动系统1被设计以便装备机动车辆,例如陆地机动车辆,诸如汽车。
本发明还涉及一种用于对机动车辆的驱动系统1,100进行单独润滑的润滑方法,驱动系统1,100包括:
-内燃发动机3,其包括耦合在一起的发动机顶部部分5和发动机底部部分7,以及包括至少一个活塞15和曲轴9的驱动动力传动系;
-压缩机35,其被安装到内燃发动机并且被设计用于至少部分地压缩用来填充发动机底部部分的气缸的入口流体A。
所述方法包括:
-通过使用包括主回路105和主泵103的主润滑系统,用润滑组合物(CL1)来润滑发动机底部部分;
-通过利用包括与主回路分离的至少一个次级回路115,125,135和驱动次级泵113,123,133的至少一个次级致动器119,129,139的次级润滑系统,用润滑组合物(CL2)来润滑发动机顶部部分和/或用润滑混合物(CL2)来润滑压缩机。
在有利的方式中,次级致动器机械上独立于驱动动力传动系。
本发明还涉及一种用于对机动车辆的驱动系统1,100进行单独润滑的润滑方法,驱动系统1,100包括:
-内燃发动机3,其包括耦合在一起的发动机顶部部分5和发动机底部部分7,以及包括至少一个活塞15和曲轴9的驱动动力传动系;
-压缩机35,其被安装到内燃发动机,并且其被设计用于至少部分地压缩用来填充发动机底部部分的气缸的入口流体A;
所述方法包括:
-通过使用包括主回路105和主泵103的主润滑系统,用润滑组合物(CL1)来润滑发动机底部部分;
-通过使用与主回路分离的第一次级润滑系统125,用润滑组合物(CL2)来润滑发动机顶部部分,第一次级润滑系统125包括第一次级泵123;以及
-通过使用与第一次级回路分离的第二次级润滑系统135,用润滑组合物(CL3)来润滑压缩机,第二次级润滑系统135包括与第一次级泵不同且分离的第二次级泵133。
压缩机可以特别是涡轮增压器压缩机。
本专利申请将通过使用下面给出的非限制性示例来说明。
根据本发明的润滑方法已经在图2表示的驱动系统中在操作上实施,所使用的发动机是来自汽车制造商PSA Peugeot Citroen的DW10发动机。用相互不同的组合物(CL1)和(CL2)执行两次测试。
在这些测试中:
-通过使用包括主回路105和主泵103的主润滑系统,用润滑组合物(CL1)来润滑发动机底部部分7;
-通过使用与主回路分离的第一次级润滑系统125,用润滑组合物(CL2)来润滑对应于气缸盖的发动机顶部部分5,第一次级润滑系统125包括第一次级泵123;以及
-通过使用与第一次级回路分离的第二次级润滑系统135,,用润滑组合物(CL2)来润滑对应于涡轮增压器压缩机的压缩机35,第二次级润滑系统135包括与第一次级泵不同且分离的第二次级泵133。
下面的表I中描述了操作中使用的润滑组合物:
表1
对于测试1,组合物CL1是由根据SAEJ300分类评定的SAE 0W 16等级定义的。
对于测试2,CL1组合物是由根据SAEJ300分类评定的SAE 0W-20等级而定义的。
通过有效地实施下面的方法,确定了针对测试1和2的燃料消耗的平均增益,该方法包括以下三个步骤:
-测量在非分离的配置中的消耗:此步骤在于测量在代表标准周期NEDC(新欧洲驾驶循环)(或NCEC Nouveau Cycle Européende Conduite)的稳定点上的消耗,其中0W30等级的参考油对应于组合物CL2;
-测量在分离的配置中的消耗:该步骤在于在与第一步骤中的操作点相同的操作点上重复相同的消耗测量,但是这次使用发动机,其中润滑系统回路已经被分成如在图2中所示的三个子回路,该三个子回路分别专用于涡轮增压器压缩机,气缸盖和发动机底部部分。涡轮增压器压缩机回路以及汽缸盖回路包含与对应于组合物CL2的第一步骤相同的0W30级参考油。至于发动机底部回路,它包含候选油CL1。
-计算在以单独的润滑配置的发动机中的候选油CL1与以非单独的润滑配置的发动机中的参考油之间可比较的操作点上的消耗上的相对增益。
通过这种方法,可以通过使用具有专门为发动机底部部分配制的候选油CL1的单独的润滑发动机系统来在每个操作点上比较在燃料消耗上的增益。
针对测试1和2的在燃料消耗上的增益的结果在下表II中给出:
表II
测试1 测试2
在燃料消耗上的平均增益(%) 3.94% 4.85%
上述结果表明,根据本发明的润滑方法的操作实施使得可能在发动机燃料消耗上获得显著的增益,特别是大于3%。

Claims (6)

1.一种用于对机动车辆的驱动系统进行单独润滑的润滑方法,所述系统包括压缩机和内燃发动机,所述内燃发动机包括耦合在一起的发动机顶部部分(或顶端)和发动机底部部分(或底端),所述方法包括:
-用具有由式(X)W-(Y)定义的SAE J300等级的润滑组合物CL1来润滑发动机底部部分,其中X代表0或5且Y代表4,8,12,16或20;
-用不同于润滑组合物CL1的润滑组合物CL2来润滑发动机顶部部分;以及
-用润滑组合物CL2或与润滑组合物CL1和CL2不同的润滑组合物CL3来润滑压缩机。
2.根据权利要求1所述的方法,其中组合物CL1具有选自0W-4,0W-8,0W-12,0W-16,0W-20,5W-4,5W-8,5W-12,5W-16或5W-20的SAE J300等级。
3.根据权利要求1或2所述的方法,其中组合物CL1在150℃具有至多等于2.9mPa.s的高温高剪切粘度测量HTHS。
4.根据权利要求1至3中任一项所述的方法,其中润滑组合物CL1不包含任何抗磨添加剂。
5.根据权利要求1至4的任一项所述的用于对机动车辆的驱动系统(1,100)进行润滑的润滑方法,驱动系统(1,100)包括:
-内燃发动机(3),其包括耦合在一起的发动机顶部部分(5)和发动机底部部分(7)以及包括至少一个活塞(15)和曲轴(9)的驱动动力传动系;
-压缩机(35),其被安装到内燃发动机并且其被设计用于至少部分地压缩用来填充发动机底部部分的气缸的入口流体(A),
所述方法包括:
-通过使用包括主回路(105)和主泵(103)的主润滑系统,用润滑组合物CL1来润滑发动机底部部分;
-通过使用包括与主回路分离的至少一个次级回路(115,125,135)和驱动次级泵(113,123,133)的至少一个次级致动器(119,129,139)的次级润滑系统,用润滑组合物CL2来润滑发动机顶部部分和/或用润滑组合物CL2来润滑压缩机。
6.根据权利要求1至4的任一项所述的用于对机动车辆的驱动系统(1,100)进行润滑的润滑方法,驱动系统(1,100)包括:
-内燃发动机(3),其包括耦合在一起的发动机顶部部分(5)和发动机底部部分(7),以及包括至少一个活塞(15)和曲轴(9)的驱动动力传动系;
-压缩机(35),其被安装到内燃发动机,并且其被设计用于至少部分地压缩用来填充发动机底部的气缸的入口流体(A),
所述方法包括:
-通过使用包括主回路(105)和主泵(103)的主润滑系统,用润滑组合物CL1来润滑发动机底部部分;
-通过使用与主回路分离的第一次级润滑系统(125),用润滑组合物CL2来润滑发动机顶部部分,第一次级润滑系统(125)包括第一次级泵(123);以及
-通过使用与第一次级回路分离的第二次级润滑系统(135),用润滑组合物CL3来润滑压缩机,第二次级润滑系统(135)包括与第一次级泵不同且分离的第二次级泵(133)。
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