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首页> 外文会议>Global Powertrain Congress on Advanced Propulsion amp; Emission vol.38; 20060919-21; Novi,MI(US) >Axial Mounting for Converters and Filters using Wiremesh Seals
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Axial Mounting for Converters and Filters using Wiremesh Seals

机译：使用Wiremesh密封件的轴向安装转换器和滤波器

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摘要

Wiremesh seals used in diesel particulate filter mounting provide cushion to accommodate the linear tolerances of the components and also give additional axial and/or radial mounting forces. Seals are suitably selected to match the canning process and the component's design. Different types of seals are engineered to provide axial mounting support for diesel particulate filter. The axial support system is designed to give more mounting force as the a-axis crush strength of the filter element is higher (20-30 bars). The L-seal provides combination of axial and radial mounting forces for the DPF. The L-shaped radially held axial seal, with a tapered radial leg, is designed to provide the required axial force with a minimum radial force contribution. These tapered seals can be inserted on the substrate after stuffing the substrate into the shell. The Axial seal provides only axial mounting force for DPF assembly. Axial seals are engineered to fit the shell and the cone of the filter assembly. Axial support seals with different wire geometry, wire diameter and material densities are studied to optimize the compression characteristics of the seal. A cyclic compression test with in-situ heating is performed to study the effect of temperature on the mounting force of the seal. The compression characteristics are optimized to overcome the system expansion and contraction during thermal cycling due to regeneration of the diesel particulate filter.
机译：柴油机微粒滤清器安装中使用的金属丝网密封件可提供缓冲，以适应部件的线性公差，并提供额外的轴向和/或径向安装力。适当选择密封件以匹配装罐过程和组件的设计。设计了不同类型的密封件，可为柴油机微粒过滤器提供轴向安装支撑。轴向支撑系统设计为在滤芯的a轴抗压强度更高（20-30巴）时提供更大的安装力。 L型密封件为DPF提供了轴向和径向安装力的组合。具有锥形径向支腿的L形径向保持轴向密封件设计用于以最小的径向力贡献提供所需的轴向力。在将基板塞入外壳之后，可以将这些锥形密封件插入基板上。轴向密封只为DPF组件提供轴向安装力。轴向密封件经过专门设计，可与过滤器组件的外壳和锥体配合。研究了具有不同金属丝几何形状，金属丝直径和材料密度的轴向支撑密封件，以优化密封件的压缩特性。进行了带有原位加热的循环压缩试验，以研究温度对密封件安装力的影响。优化压缩特性，以克服由于柴油机微粒过滤器再生而在热循环过程中产生的系统膨胀和收缩。

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