【摘要】 分析了内燃机正时齿轮噪声形成原因，国内外文献推荐的几种正时齿轮降噪措施及其效果，并在国产柴油机上进行了验证，为降低柴油机机械噪声作了有益的探索。更多还原

【Abstract】 The noise sources from timing gear of interusl combustion engine were analysed.Several noise reducing technologies recommended by papers and literatures have been verified on local made diesel engines. This is very helpful in exploring the way to reduce mechanical noise of diesel engines.更多还原