【作者】 刘鹏； 卢炽华； 张皓； 刘志恩； 洪健；

【Author】 Liu Peng;Lu Chihua;Zhang Hao;Liu Zhi’en;Hong Jian;Wuhan University of Technology,Hubei Key Laboratory of Advanced Technology for Automotive Components;DONGFENG OFF-ROAD VEHICLE CO.,LTD.;

【机构】 武汉理工大学现代汽车零部件技术湖北省重点实验室； 东风特种装备事业部(东风越野车有限公司)；

【摘要】 发动机缸压是进行发动机载荷仿真的主要输入之一,经过转换可获得发动机周期性及随机性工作载荷,可供发动机噪声的分析、诊断及优化使用。本文从缸压提取的实际需求出发,详细介绍了柴油发动机缸压采集的试验方法和步骤,并通过对于缸压采集中零位参考角的计算,得出了一种通过动态测试数据求得发动机静态固有相位角度的办法,可以快速核准缸压载荷提取试验中相位角的准确性。通过对实际试验数据的计算分析,验证了该方法能够保证在极小误差的情况下快速确认试验精度,达成了相位角核准目的。更多还原

【Abstract】 Engine cylinder pressure date is one of the main inputs for engine load simulation.The periodic and random working loads of the engine can be obtained after the pressure date conversion.And the loads can be used for analysis,diagnosis and optimization of engine noise.This thesis which start from the actual demand of cylinder pressure extraction introduces the test methods and steps of diesel engine cylinder pressure acquisition in detail,and through the calculation of the initial reference angle in the cylinder pressure acquisition,a method to obtain the engine initial reference angle through dynamic test data is obtained.The method can quickly verify the accuracy of the phase angle in the cylinder pressure load extraction test.Through the calculation and analysis of the actual test data,it is verified that the method can ensure the rapid confirmation of the test accuracy under the condition of extremely small error,and achieve the purpose of phase angle verification.更多还原