1)  piston type fuel supply pump ,piston type fuel feed pump
活塞式输油泵
2)  piston
活塞
1.
Microstructure and Mechanical Properties of BH22 Piston Alloy in Squeezing Casting;
挤压铸造BH122活塞合金的显微组织与力学性能
2.
Research On Machining Principle For Non-Cylinder Piston Pin Hole Based on GMM;
基于GMM的活塞异形销孔加工原理研究
3.
Research on On-site Measurement of Middle-bulged Varying Ellipse Profile of Piston Skirt;
活塞裙部中凸变椭圆型面在位检测的研究
3)  pistons
活塞
1.
Squeeze casting has been used for the shaping of comparatively large sized pistons made of hypereutectic aluminum-silicon alloys(silicon content between 16% to 20%).
采用挤压铸造的方法,作为尺寸较大的过共晶铝硅合金(含硅16%~20%)活塞的成型工艺。
2.
The authors study the wear curve of cutting tools and the surface roughness of motorcycle pistons on hypereutectic Al-22%Si alloy,and discuss the influence of several machining factors on the machinability of hypereutectic Al -22%Si alloy, such as the materials of tools, the geometric shapes of cutting blade and the machining parameter.
探讨了高硅铝AL—22%Si合金摩托车活塞切削加工时刀具的磨损规律和工件表面粗糙度的影响;讨论了刀具材料、切削刃几何参数和切削用量对该材料切削的影响规律。
3.
Compared with the conventional materials(ZL108,ZL109), SiCp/ZL108 composite has better physical and mechanical properties and is an ideal material for motorcycle pistons.
研究采用铸造旋涡法制造SiCp/ZL108复合材料的工艺,重点探讨铝液温度、颗粒表面处理及合金元素(Mg、B、Ti)对颗粒的回收率和分布的影响;与传统的活塞材料(ZL108,ZL109)相比,该材料具有优良的机械性能和物理性能,是摩托车活塞的理想材料。
4)  piston and rings
活塞与活塞环
1.
The surfaces of piston and rings of SANTAN JV gasoline engine were tribologically modified by means of rare earth self-lubrication, and the clearances of the piston skirt to cylinder and ring gaps were modified to -5~2 μm and 150 μm, respectively.
采用稀土自润滑表面处理技术对桑塔纳 JV汽油发动机活塞与活塞环表面进行处理 ,并对原机进行活塞与汽缸、活塞环端口的超小间隙改造 (配缸间隙 - 5~ 2μm,活塞环开口 15 0μm ) ,通过台架试验对超小间隙发动机抗拉缸性能和摩擦功耗进行了考察 ;通过原子力显微镜对活塞表面的微观形貌和摩擦力进行了测试 。
5)  Piston and ring
活塞和活塞环
6)  piston rod
活塞杆
1.
Application of Quality Improvement in Piston Rod Machining;
质量管理改进法在活塞杆加工质量管理中的应用
2.
The piston rod steering structure analysis of disc type deburrer for billets;
连铸坯圆盘式去毛刺机活塞杆导向结构分析
3.
Experimental research on piston rod surface intensification using electric brush coating method;
筑路机械活塞杆表面电刷镀强化的试验研究
参考词条
补充资料:活塞式无油干式机械真空泵原理及简介

活塞式无油干式机械真空泵技术要求不太复杂,容易制造。 


    该泵的外形呈扁方形,是由四个阶梯形活塞及四个阶梯形气缸组成。与电机直联的轴通过四根连杆带动四个活塞。活塞的背面空间由次级活塞抽气,以减少泄漏和降低极限压力。每个气缸都有进气阀与排气阀。四个活塞组成三个压缩级,为了增加抽速,两个活塞是并联的,为了便于泵在大气压力下的启动,设置了辅助排气阀,当活塞的排气压力高于大气压力时,有一部分气体通过阀排入大气,当其排气压力低于大气压力时,则排出气体依次进入第三个、第四个气缸压缩后排出泵外。泵的压缩比可达到 105 ,泵的极限压力可达 1.3Pa 。泵气缸的内表面衬有聚合材料,以降低摩擦系数与磨损。这种泵的功率消耗低,散热条件较好,不需要冷却水。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。