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首页> 外文会议>International Conference on Chemical, Mechanical and Materials Engineering >New Methods to Evaluate Diesel Smoke from Inspection/Maintenance Vehicles using Integration of Smoke Emissions over a Measurement Cycle of Snap-Acceleration Test at no Load
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New Methods to Evaluate Diesel Smoke from Inspection/Maintenance Vehicles using Integration of Smoke Emissions over a Measurement Cycle of Snap-Acceleration Test at no Load

机译：在无负载下使用烟雾排放的集成烟雾排放的烟雾排放从检查/维护车辆中评估柴油烟雾的新方法

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摘要

Each country regularly inspects smoke emissions from diesel vehicles. The most common method is a snap acceleration test at no load. Currently, the representative smoke value of a tested vehicle is decided by averaging three peak values which correspond to three consecutive measurement cycles. The biggest problem of the current method of determining the representative smoke of tested vehicles based on the averaging 3 consecutive peak values is that it varies enormously according to how the driver pushes the accelerator. In this study, new methods based on integration were researched to calculate representative smoke values from tested vehicles using the same data obtained by a snap acceleration test at no load. The smoke emissions for each measurement cycle were integrated with respect to time, and the average of the integrated values was obtained. Also, the smoke value of the acceleration range in each measurement cycle was integrated and the average was obtained. The representative value of smoke emissions was analyzed according to both the old and new calculation method. A total of 20 vehicles of the same model with 2 liter diesel engines were tested using snap acceleration at no load. It was found that the fluctuation of the representative smoke values of the tested vehicles was reduced when the average of the integrated values over either one measurement cycle or the acceleration range was used as the representative value.
机译：每个国家都经常检查柴油车的烟雾排放。最常用的方法是在无负载下的捕捉加速测试。目前，通过对应于三个连续测量周期的三个峰值值来确定测试车辆的代表性烟雾值。基于平均3连续峰值确定测试车辆代表性烟雾的当前方法的最大问题是，根据驾驶员推动加速器的方式变化很大。在这项研究中，研究了基于集成的新方法，以使用在无负载下通过快速加速测试获得的相同数据计算来自测试车辆的代表性烟雾值。相对于时间，每个测量周期的烟雾排放，并获得集成值的平均值。而且，整合了每个测量周期的加速度范围的烟雾值，并且获得了平均值。根据旧的计算方法分析烟雾排放的代表价值。使用快速加速度在无负载下进行一次使用2升柴油发动机的相同模型的20辆。发现当使用一个测量周期或加速度范围内的集成值或加速度范围的平均值作为代表值时，减小了测试车辆的代表性烟雾的波动。

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