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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >ANALYSIS OF HYDRODYNAMIC LUBRICATION OF SIX- AND FOUR- GROOVED PLUNGER OF ROTARY DIESEL FUEL INJECTION PUMP
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ANALYSIS OF HYDRODYNAMIC LUBRICATION OF SIX- AND FOUR- GROOVED PLUNGER OF ROTARY DIESEL FUEL INJECTION PUMP

机译：旋转式柴油喷射泵六槽和四槽柱塞的水力润滑分析

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摘要

The rotary diesel fuel injection pump (RDFIP) provides an atomized fuel to the combustion chamber of an automobile engine assembly at high pressure. The wear between the plunger and plunger sleeve causes considerable decrease in injection pressure and the quantity of fuel to combustion chamber of an engine, which ultimately leads to failure of engine assembly. This research investigates the cause of failure particularly focusing on hydrodynamic lubrication of a six-grooved plunger pump (SGPP) and its comparison with non-failure case of a four-grooved plunger pump (FGPP). Comparison of computed shear stresses, dimensionless film thickness, dimensionless pressure, attitude angle, eccentricity ratio and dimensionless load has been carried out at variable pump speed for SGPP and FGPP. The analysis of designed and optimized radial clearance has also been carried out for both cases by varying radial clearance between the plunger and plunger sleeve of hydraulic head assembly of RDFIP. Finite difference method is used to solve the Reynolds equation in order to calculate the pressure distribution in a fluid film. Experiments have been carried out to determine parameters such as specific heat of diesel fuel, diesel fuel density, fuel inlet temperature, radial clearance, groove depth, plunger arc angle and groove length for SGPP and FGPP These experimentally determined parameters are then used Put abstract text here as input in our computer program to lend more confidence to our predicted results
机译：旋转柴油​​燃料喷射泵（RDFIP）在高压下将雾化的燃料提供给汽车发动机组件的燃烧室。柱塞和柱塞套筒之间的磨损导致喷射压力和发往发动机燃烧室的燃料量显着下降，最终导致发动机组件故障。这项研究调查故障的原因，特别是六槽柱塞泵（SGPP）的流体动力润滑，并将其与四槽柱塞泵（FGPP）的无故障情况进行比较。对于SGPP和FGPP，已在可变泵速下比较了计算的剪切应力，无量纲的膜厚度，无量纲的压力，姿态角，偏心率和无量纲的载荷。对于这两种情况，还通过改变RDFIP液压头组件的柱塞和柱塞套筒之间的径向间隙来进行设计和优化的径向间隙的分析。为了计算流体膜中的压力分布，使用有限差分法来求解雷诺方程。已经进行了实验以确定SGPP和FGPP的参数，例如柴油的比热，柴油燃料的密度，燃料入口温度，径向游隙，凹槽深度，柱塞弧角和凹槽长度，然后使用这些实验确定的参数。此处作为我们计算机程序的输入，以使我们对预期结果更有信心

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