发动机可变压缩比实现方式简述与一种连续可变压缩比曲轴的设计  

The implementation of VCR engine and the design of a crankshaft for realizing continuously VCR

作　　者：黄佳琦 肖合林[1] Huang Jiaqi;Xiao Helin

机构地区：[1]武汉理工大学汽车工程学院,湖北省武汉市430070

出　　处：《时代汽车》2022年第8期126-128,共3页Auto Time

基　　金：中国国家自然科学基金会No.21377101的资金支持。

摘　　要：当下各国的排放与油耗法规日益严苛,对发动机的热效率提出了更高的要求,可变压缩比技术可以根据发动机工况调节压缩比,从而在不削弱动力性的前提下提升燃油经济性,是当下发动机技术的重要发展方向。本文通过查阅大量的专利与论文,总结了现有的可变压缩比技术,分析了各自的优缺点,随后尝试设计了一种用于实现连续可变压缩比的曲柄长度可变的曲轴,该机构简单紧凑,成本低,希望能为相关研究人员提供一定的参考。At present,the emission and fuel consumption regulations of various countries are increasingly stringent,which puts forward higher requirements on the thermal efficiency of the engine.Variable compression ratio technology can adjust the compression ratio according to the engine operating condition,so as to improve the fuel economy without weakening the power,which is an important development direction of the current engine technology.Through consulting a large number of patents and papers,this paper summarizes the existing variable compression ratio technology,analyzes their advantages and disadvantages,and then tries to design a crankshaft with variable crank length for realizing continuous variable compression ratio.This mechanism is simple,compact and low-cost.We hope to provide certain reference for relevant researchers.

关 键 词：发动机 可变压缩比 曲轴 热效率 

分 类 号：TK4[动力工程及工程热物理—动力机械及工程]