论文部分内容阅读
本文介绍了应用于轻型车用492Q 汽油机上的一项研究成果。通过研制有一定涡流强度的低流阻进气道,改进进排气管;重新设计燃烧室,提高压缩比,增大挤气面积,促进紊流火焰传播,减少火焰传播距离:改进配气机构,使整机动力经济性显著提高。现已达到:最大功率70.4kW/4000r/min;最大扭矩187N·m;最低油耗273.4g/kW·h。此外,为了找出发动机强化后的薄弱环节,本文还给出了对机体进行有限元计算的结果。
This article describes a study applied to the 492Q gasoline engine for light vehicles. Through the development of a certain degree of vortex flow resistance of the low flow resistance intake port, to improve the intake and exhaust pipe; redesign of the combustion chamber to improve the compression ratio and increase the squish area, and promote the spread of turbulent flame to reduce the flame propagation distance: to improve the valve mechanism , So that the overall power economy significantly improved. Has now reached: the maximum power 70.4kW / 4000r / min; maximum torque 187N · m; minimum fuel consumption 273.4g / kW · h. In addition, in order to find out the weak points after the engine is strengthened, the paper also gives the result of finite element calculation to the body.