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公开(公告)号:US06187721B1
公开(公告)日:2001-02-13
申请号:US09194559
申请日:1998-12-29
申请人: Irwin Goldblatt , Michael McHenry , Kenneth Henderson , Danny Carlisle , Niall Ainscough , Myron Brown , Richard Tittel
发明人: Irwin Goldblatt , Michael McHenry , Kenneth Henderson , Danny Carlisle , Niall Ainscough , Myron Brown , Richard Tittel
IPC分类号: C01M14910
CPC分类号: C10M161/00 , C10M149/06 , C10M149/10 , C10M151/02 , C10M2207/34 , C10M2215/04 , C10M2215/086 , C10M2215/24 , C10M2215/26 , C10M2215/28 , C10M2217/024 , C10M2217/028 , C10M2217/046 , C10M2217/06 , C10M2221/02 , C10N2240/102 , C10N2240/103
摘要: Soot in a lubricated diesel engine is effectively dispersed without adversely affecting the viscosity of the lubricant by using a particular lubricant. The lubricant utilized comprises a lubricant base stock (e.g. more than 75% by weight), a dispersant (e.g. from 0.2-less than 4% from a detergent inhibitor (D1) package), and a functionalized viscosity index improver (e.g. from 0.1-2.5% by solids weight). The functionalized viscosity index improver is a highly functionalized graft copolymer reaction product of an oxygen, a nitrogen, or an oxygen and nitrogen containing, ethylenically unsaturated, aliphatic or aromatic monomer having from 2 to about 50 carbon atoms grafted onto a polyolefin copolymer. Also, 0-2.5% by solids weight of another viscosity index improver besides the highly functionalized graft copolymer reaction product may be added, as well as other conventional additives.
摘要翻译: 润滑柴油发动机中的烟灰有效地分散,而不会通过使用特定润滑剂不利地影响润滑剂的粘度。 使用的润滑剂包括润滑剂基础油料(例如超过75重量%),分散剂(例如,来自洗涤剂抑制剂(D1)包装的0.2-0.4%))和官能化粘度指数改进剂(例如0.1- 2.5%固体重量)。 官能化粘度指数改进剂是接枝到聚烯烃共聚物上的具有2-约50个碳原子的氧,氮或含氮和氮的含有烯属不饱和的脂族或芳族单体的高度官能化的接枝共聚物反应产物。 此外,除了高度官能化的接枝共聚物反应产物之外,还可以添加0-2.5%的固体重量的另一种粘度指数改进剂,以及其它常规的添加剂。
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公开(公告)号:US4008977A
公开(公告)日:1977-02-22
申请号:US614807
申请日:1975-09-19
CPC分类号: F02C7/18 , F04D29/321 , F04D27/0215
摘要: Methods and apparatus for flowing cooling air from the compressor section to the turbine section of a gas turbine engine are disclosed. Cooling air from the compressor is flowed radially inward through the compressor drum cavity and thence axially rearward along the rotor shaft to the turbine. Vortex pressure losses in the drum cavity are diminished to enable effective utilization of a lower pressure, lower temperature cooling air source. The use of air from the lower pressure, lower temperature source improves the overall engine operating efficiency while maintaining turbine cooling rates which are consonant with durable operation of the engine.
摘要翻译: 公开了将冷却空气从压缩机部分流向燃气涡轮发动机的涡轮部分的方法和装置。 来自压缩机的冷却空气径向向内流过压缩机鼓空腔,从而沿着转子轴向后流动到涡轮机。 鼓腔中的涡流压力损失减小,能够有效利用较低压力,较低温度的冷却空气源。 来自较低压力,较低温度源的空气的使用提高了整体发动机的运行效率,同时保持了与发动机的耐用操作相符合的涡轮冷却速率。
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