1异响的规律技术状况良好的柴油发动机在各种工况下运转平衡,响声纯正,没有明显的杂音。如果发动机某部位出了故障,或机件松旷,或配合间隙失调,或燃烧不正常等,则在工作中的最初表现就是异响。准确判断发动机异常响声,必须建立在对其正常运转响声熟悉的基础之上。异响噪声大体来源于3个方面,即燃烧噪声、供油系噪声和发动机机械噪声,每一种噪声中都可能包含异响。由于故障因机型及其他因素的差异,异响噪声往往难以用语言文字和音调来准确描述,只能在对其正常运转响声熟悉的基础上判断各种异响噪音。柴油发动机的异响普遍存在如下规律:发 1 abnormal sound law Technical conditions Good diesel engine running balance under various conditions, pure sound, no obvious noise. If a part of the engine fails, or loose parts, or with the gap imbalance, or abnormal combustion, etc., the initial performance in the work is abnormal sound. Accurately determine the abnormal engine noise, it must be based on the sound of its normal operation sound familiar. Abnormal noise comes from three aspects generally noise, combustion noise, fuel supply noise and engine mechanical noise, each noise may include abnormal sound. Due to the failure due to differences in models and other factors, abnormal noise is often difficult to accurately describe the language and tone, only in its normal operation on the basis of a sound familiar to judge a variety of abnormal noise. Abnormal sound of diesel engines are generally the following rules: hair