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cylinder-block
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  缸体
     the surface hardness of low silicon cylinder-block is during 194 HB to 217HB and high silicon cylinder-block is during 190 HB to 201HB .
     低硅缸体的表面硬度在194~217HB之间,高硅缸体表面硬度在190~201HB之间。
短句来源
     The strength of cylinder-block with low-alloyed Cr is more than 220MPa,withmiddle's is more than 230MPa,with high's is more 255MPa.
     低铬缸体σ_b>220MPa,中铬缸体σ_b>230MPa,高铬缸体σ_b>255MPa。
短句来源
     Manufacturing of cylinder-block casting for 465Q model automobile engine
     465Q汽车发动机缸体铸坯件的研制
短句来源
     Quality-control and Production of the Die Casting Cylinder-Block and Transmission Case
     发动机缸体与变速箱壳体压铸生产及质量控制
短句来源
     This paper is based on the casting of the cylinder-block, analyzing the main machined surface's surface hardness and key-part's body-strength, discussing the influential rule of Si, Cr, Sn's content on cylinder-block's structure and property.
     本文以该发动机缸体铸件作为研究对象,对其主要加工面的表面硬度和关键部位的本体强度状态进行了分析,研究了含硅量和Cr、Sn等低合金化元素的含量对缸体金相组织和机械性能的影响规律。
短句来源
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  轿车发动机缸体
     Production line,technological process and quality-control are similar in producing Al-alloy cylinder-block and trancmission case by die casting. Defects of cylinder-block are interior.
     采用铝合金压铸工艺生产轿车发动机缸体及变速箱壳体,生产线构成、工艺流程及质量控制要素近似,缸体质量问题集中在内部缺陷,变速箱壳体内外部缺陷发生几率相当。
短句来源
  “cylinder-block”译为未确定词的双语例句
     Technological Design and Application of Cylinder-block Production Line of WD615 Series Diesel Engine
     WD615系列柴油机机体加工生产线工艺设计及应用
短句来源
     Dynamic Characteristic Analysis of Cylinder-block in 8135 Diesel Engine
     8135柴油机机体的动态特性分析
短句来源
     The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen's.
     本文模拟了圆柱管缝隙流模型的三维流动场,得到了与Middlemen结论一致的流动均匀性,并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象;
短句来源
     Kunming Yunnei Dongli Co. ,Ltd introduced into a air flow squeeze moulding line of German compang KW in 1995, It is used to produce cylinder-head and cylinder-block of " 100 series" diesel engine mainly?
     昆明云内动力公司一九九五年引进德国KW公司静压造型线,主要用于生产100系列柴油机机体、缸盖。
短句来源
     The application of excitationmodulation principle is demonstrated in thispaper with actual intances in rotating bodies,rolling bearings gear-boxes cylinder-block pi-ston assembly and air distributors in engines.
     文章还以旋转体、滚动轴承、齿轮箱、发动机缸套活塞组与配气机构等为实例说明了调制激励的应用原理。
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For a two-stroke multishaft opposed-piston engine, many different dynamic characteristics can be obtained, depending upon the leading angle of the exhaust pistons, angle between the cylinder blocks, etc. The different dynamic characteristic gives the different values of main bearing, load uniformity of firing, the balancing of engine, the nature of torsional vibration etc. In this paper, the firing uniformity and the external balancing of the multishaft opposed-piston engine have been studied. The uniformity...

For a two-stroke multishaft opposed-piston engine, many different dynamic characteristics can be obtained, depending upon the leading angle of the exhaust pistons, angle between the cylinder blocks, etc. The different dynamic characteristic gives the different values of main bearing, load uniformity of firing, the balancing of engine, the nature of torsional vibration etc. In this paper, the firing uniformity and the external balancing of the multishaft opposed-piston engine have been studied. The uniformity of ignition in engine is related to the crank arrangement of shaft and the augle between cylinder blocks, and the latter depends on the kinematic plan of an engine. For analysing the external balancing conveniently, the method of a pair of vectors rotating in opposite directions is used. The equivalent system for torsional vibration of this type engine installation is a gear-branched system with many identical branches. The vibration of this system has two kinds of node: the node at gears and that on shaft. An elementary analysis of the torsional vibration characteristics of the system with a number of identical branches, and some suggestions for eliminating the dangerous resonances and improving the balancing of engines are also given in this paper. Moreover, the author presents some computation results of the three and four-shaft engines and these data in turn may be used as a reference for designing of this type of engines.

对于多軸二冲程对項活塞式发动机而言,进排气活塞的布置方式、各曲軸的轉向情况都是較多的,因此发动机具有多种运动学方案。各方案的实现条件(即排气活塞提前角及各气缸夹角的数值)是不同的,同时,它們的动力性能如曲軸主軸承負荷、发动机发火均勻性、平衡性、軸系扭轉振动特性等亦各有所异。本文对多軸对项活塞式发动机的发火均勻性及外部平衡性的計算方法进行了探討。发动机的发火均匀性与曲軸的曲柄排列及橫排各气缸的发火間隔角有关,而后者又决定于发动机的运动学方案。由于各列气缸是斜置的,而活塞的止点位置又不一致,因此以正反轉矢量方法来討論发动机外部平衡性是最为方便的。該型式发动机装置的扭轉振动当量系統为具有多个相同分支的齿輪連接分支系統,它的扭轉振动可分为两部分——节点在齿輪处的振动(共节点振动)和节点在軸上的振动(同相振动)两种形式。文中对多个相同分支軸系的扭轉振动特性作了初步分析,并对消减危險扭轉共振的措施和改进发动杌的平衡性提出了一些看法。此外也給出了三軸及四軸发动机的計算結果,可供該型式发动机設計时的参考。

In this paper, testing results on the tin-alloyed cast iron cylinder-blocks for trucks are presented. The results obtained in the laboratory and in the mass production indicate that addition 0.05% Sn to melted iron HT20-40 containing 0.25-0.35% Cr can increase quantity of pearlite which occurs at the interior wall of the cylinder-blocks over 90%; its hardness is considerablly increased; undercooled layer is decreased; sensibility of the cross-section is decreased; permitted range of the chemical composition...

In this paper, testing results on the tin-alloyed cast iron cylinder-blocks for trucks are presented. The results obtained in the laboratory and in the mass production indicate that addition 0.05% Sn to melted iron HT20-40 containing 0.25-0.35% Cr can increase quantity of pearlite which occurs at the interior wall of the cylinder-blocks over 90%; its hardness is considerablly increased; undercooled layer is decreased; sensibility of the cross-section is decreased; permitted range of the chemical composition is increased; soundness and anticorrosion is inproved too; and at the same time, the technique of mechanical cutting is satisfied. Therefore, tin-alloyed cast iron for cylinder-blocks surely has long-live service. Inoculated iron by addition Sn is discussed in detail. According to the refinement of eutectic cells, improvement of sensibility of the cross-section, decreasing tendency to chilling, decreasing the amount of undercooled graphite and increasing mechanical properties, in comparision with the iron no added with Sn, it indicates that Sn can inoculate melted iron. Besides, The formation of the undercooled layer in the cylinder-blocks and the effect on the layer by the addition of Sn have been explained.

本文报导了加锡铸铁制作汽缸体的试验工作。实验室工作和生产试验表明,在原有HT20-40牌号含铬的铁水中,附加 0.05%的锡,可使汽缸体缸筒内壁的珠光体数量提高到90%以上,硬度有明显的提高,过冷层厚度减少,并且减少了汽缸体的断面敏感性,扩大了允许的化学成分范围,致密度和耐腐蚀性能也有所改善;同时也能满足机械加工的工艺要求。从而,可以显著地提高汽缸体的使用寿命。 文中指出,加锡对铸铁有孕育作用。从细化共晶团、改善断面均匀性、减少白口倾向、减少过冷石墨和提高机械性能几方面,与不加锡的铸铁进行对比,论证了锡的孕育作用。此外,还对汽缸体过冷层的形成以及加锡可使其减少的原因进行了探讨。

This paper analysed the main causes which affect the lubricating oil consumption of series 95 diesel engines which are produced in large quantity and widely used throughout the country. Also briefly described theoretically the effects of thepressure in crankcase, the clearance between valve stem and valve guide, cylinder liner ovality, piston ring design and the sealing between cylinder liner and piston rings etc. on the lubricating oil consumption.After a series of laboratory tests and rural operations, following...

This paper analysed the main causes which affect the lubricating oil consumption of series 95 diesel engines which are produced in large quantity and widely used throughout the country. Also briefly described theoretically the effects of thepressure in crankcase, the clearance between valve stem and valve guide, cylinder liner ovality, piston ring design and the sealing between cylinder liner and piston rings etc. on the lubricating oil consumption.After a series of laboratory tests and rural operations, following conclusions are drawn: The most effective way to reduce the lubricating oil consumption is to adopt the oil ring backed with spiral spring expander and to control inlet oil quantity between valve stem and valve guide.This paper also showed the test data of the raised machanical efficiency after eliminating one compression ring. Authors further stated the effect of the stiffness of cylinder block on lubricating oil consumption to which enough attention had not paid so far.To those engine and spare parts manufactures, this paper will give some valuable reference.

本文分析了面广量大的95系列柴油机机油消耗的原因。从理论上简要说明了曲轴箱压力;气门和气门导管的间隙;缸套椭圆度;活塞环结构;缸套和活塞环的贴合程度等主要因素对柴油机机油消耗率的影响程度。 通过试验室和农村实际使用试验,得出了如下结论:采用内衬螺旋弹簧油环和控制气门和气门导管之间的进油量是降低机油消耗见效较快的途径;同时文章提供了减少一道气环后提高机械效率的试验数据。作者还提出了尚未引起足够重视的机体刚度对机油消耗率的影响。本文对主机厂和有关配件厂都有一定的参考价值。

 
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