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为了提高传统发动机的进气效率,改善缸内涡流情况,提出了一种新型球阀式发动机气门。对新型球阀式气门的工作原理进行介绍;并利用Solidworks三维软件对改进的球阀式气门发动机和传统的发动机进行建模;用Solidworks的Flow simulition插件仿真模拟典型工况下发动机的气体流动状态,获取3种开度下发动机的相关阻力参数和气体流动参数,对比分析改进型发动机和传统发动机的进气阻力和缸内涡流情况。实验结果表明,改进的球阀式气门可以降低进气阻力,从而提高进气效率;在缸内形成2个涡流,气流速度较快,促进缸内的燃料和空气的混合,对于改善发动机性能具有重要意义。
In order to improve the intake efficiency of traditional engine and improve the situation of swirling in cylinder, a new ball valve engine valve was proposed. Introduced the working principle of the new ball valve type valve; and used Solidworks 3D software to model the improved ball valve valve engine and the traditional engine; simulated the gas flow state of the engine under the typical condition with the flow simulition plug-in of Solidworks, The relative resistance parameters and gas flow parameters of the engine under the three opening degrees were compared and the intake resistance and in-cylinder eddy current of the improved engine and the conventional engine were compared. Experimental results show that the improved ball valve-type valve can reduce the intake resistance, thereby enhancing the efficiency of intake; the formation of two vortex in the cylinder, the air flow faster, to promote the mixing of fuel and air in the cylinder, to improve engine performance is important significance.