乘用柴油车燃烧噪声改善研究

Study on Improvement of Combustion Noise of Diesel Engine

汽车发动机NVH是一个越来越受市场关注的问题,随着越来越多先进技术的应用和制造精度的提升,发动机性能越来越高,发动机性能已经不是评价汽车的唯一标准,而整车的NVH性能越来越被推向更加重要的位置。而发动机是汽车噪声和振动的激励源,因此降低发动机的噪声和振动在改善汽车声品质和乘坐舒适性方面显得更加重要,对于柴油发动机机来说燃烧噪声又是一项突出的问题,本文则是以柴油发动机为研究对象,通过探索和测试深入研究改善柴油发动机燃烧噪声的方法和手段,最终得出改善柴油发动机燃烧噪声的措施及成果。

Engine NVH problem is becoming more and more important in the market, and with more and more application of advanced technology and the improvement of manufacturing accuracy, the engine performance is becoming higher and higher, and is not the only evaluation standard for the vehicle. Vehicle NVH performance is becoming more and more important. Engine is the source of vehicle noise and vibration, so to decrease the engine noise and vibration is very important to improve the vehicle NVH and comfortability. For diesel engine, the combustion noise is another critical problem. This paper is to research about the methods to improve diesel engine combustion noise, and finally get the measure to improve diesel engine combustion noise and gain some achievement.