进气道对火花点火发动机性能影响的试验研究  

作　　者：许振忠[1] 肖浩栋[1] 刘书亮[1] 刘德新[1] 李玉峰[1] 

机构地区：[1]天津大学

出　　处：《汽车技术》2001年第6期21-24,共4页Automobile Technology

摘　　要：提高火花点火发动机缸内空气运动的滚流与涡流强度，可以增加燃烧室中的湍流强 度，加快火焰传播速度和燃烧速率，从而改善燃烧过程，提高发动机的动力性。通过对2气 门TJ376Q汽油发动机进行试验，设计了新型进气道。稳流试验台检测表明，所设计的新气道 涡流比、滚流比和流量系数比原气道都有较大提高，进气系统的流动特性得到改善，提高了 发动机的最大扭矩和最大功率输出。Increasing the tumble and swirl strength in the cylinder of spark －ignited engine can increase the turbulence intensity in combustion chamber,spe ed up the flame propagation and increase combustion rate, improve combustion pro cess and increase the engine power.A new intake port is designed for the two－va lve TJ376Q gasoline engine. The steady flow test indicated that the swirl ratio, tumble ratio and flow coefficient of the new intake port are more superior to t hose of riginal one. The flow characteristic of intake system is improved and th e max. engine torque and max.engine power are increased.

关 键 词：火花点火发动机 性能 汽车 试验研究 进气道 

分 类 号：U464.134.4[机械工程—车辆工程]