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汽车安全与节能学报

JASE ›› 2018, Vol. 9 ›› Issue (4): 359-369.DOI: 10.3969/j.issn.1674-8484.2018.04.001

• 综述与展望 •    下一篇

增压直喷三缸汽油机的NVH 开发与优化

沈 源1，杨 陈1，邓晓龙1，杨万里1，余 靖2，顾鹏云2   

  1. （1. 吉利汽车动力总成研究院，宁波315336，中国；2. 吉利汽车研究院，宁波315336，中国）
  • 收稿日期:2018-11-18 出版日期:2018-12-31 发布日期:2019-01-02
  • 作者简介:第一作者 / First author ： 沈源 (1974—)，男( 汉)，湖北，正高级工程师。E-mail: shenyuan@geely.com。

Development and optimization of NVH for a 3-cylinder turbocharged gasoline direct injection engine

SHEN Yuan1, YANG Chen1, DENG Xiaolong1, YANG Wanli1, YU Jing2, GU Pengyun2   

  1. (1. Geely Powertrain Research Institute, Ningbo 315336, China; 2. Geely Research Institute, Ningbo 315336, China)
  • Received:2018-11-18 Online:2018-12-31 Published:2019-01-02

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摘要：

        为了满足日益严格的排放和油耗法规要求，体积小的小排量三缸发动机已成为各主要汽车企业节能减排的关键技术。该文从三缸机的振动机理出发，对行业内的三缸机存在的各类NVH ( 噪声、振动和声振粗糙度) 问题进行了分析，并对各个主机厂解决三缸机NVH 的措施进行了归纳和总结。在此基础上，该文以吉利1.0 L 增压直喷三缸发动机为例，从发动机本体振源和整车传递路径两个大方向上，对于发动机曲轴、平衡轴、双模扭转减振器、整车悬置、排气系统等进行了系统的分析和优化。通过以上措施，吉利汽车将该发动机的NVH 性能做到最佳，以最大限度地给客户提供舒适的驾乘体验。

关键词: 三缸汽油机, 涡轮增压, 噪声、振动与声振粗糙度（NVH）, 平衡轴, 双模扭转减振器(TVD)

Abstract:

Three-cylinder engines, which have small packaging size, have been a key player for major original design manufactures (OEMs) to meet more and more stringent fuel economy and emission regulations for internal combustion engines in the recent years. In this paper, vibration mechanism of 3-cylinders is illustrated, NVH (noise, vibration、harshness) issues associated with 3-cylinder engines are analyzed, and solutions presented by OEMs are summarized. The systematic analyses and optimizations on engine and transfer path, including crankshaft, balance shaft, dual-mode torsion vibration damper (TVD), engine mounts, and exhaust system, are applied to a 1-liter 3-cylinder turbocharged gasoline direct injection engine developed by Geely Auto. With the optimizations, the 3-cylinder engine delivers excellent NVH performance, along with good power and fuel economy, to provide superior driving experience to customers.

Key words: 3-cylinder gasoline engine, turbocharging,  noise, vibration, harshness (NVH) , balance shaft, dual mode torsion vibration damper (TVD)