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首页> 外文会议>Leeds-Lyon Symposium on Tribology; 20000905-08; Lyon(FR) >An Experimental Approach to Solving Combustion Engine Valve and Seat Wear Problems
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An Experimental Approach to Solving Combustion Engine Valve and Seat Wear Problems

机译：解决内燃机气门和阀座磨损问题的实验方法

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摘要

An experimental approach to solving valve and seat wear problems is described. The procedure involves two levels of test abstraction; firstly a bench test-rig, designed to fit in a hydraulic test machine, using real valve and seat insert specimens simulating combustion loading, and secondly a motorised cylinder-head, to study the effect of impact on valve closure without the application of combustion loading. The design of the rigs is described as well as test methodologies developed for their operation. Bench testwork carried out using the rigs is detailed and wear features and valve recession observed are analysed and compared with those observed during engine testing in order to establish the validity of the test methodologies. Use of this approach will enable potential valve and seat insert materials to be screened and the effect of alterations in design and engine operating parameters to be assessed in a more cost effective and less time consuming manner than the commonly used engine testing.
机译：描述了一种解决阀门和阀座磨损问题的实验方法。该过程涉及两个层次的测试抽象：首先，设计用于液压试验机的台架试验台，使用真实的阀门和阀座插入件样品模拟燃烧负荷，其次，使用电动汽缸盖，以研究不施加燃烧负荷对阀关闭的影响。描述了钻机的设计以及为钻机的运行开发的测试方法。详细介绍了使用钻机进行的基准测试工作，并分析了观察到的磨损特征和气门后退，并将其与发动机测试期间观察到的进行了比较，从而确定了测试方法的有效性。与通常的发动机测试相比，这种方法的使用将能够对潜在的阀门和阀座插件材料进行筛选，并以更具成本效益和更省时的方式评估设计和发动机工作参数变更的影响。

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