论文部分内容阅读
为解决小型高速汽油机低速时紊流强度低、燃烧过程不充分的难题,开发了一种新型燃烧室.该燃烧室已获得专利,它利用在活塞顶面的火花塞的远端和近端处设计的与缸盖形状相吻合的特殊突起,可在发动机压缩和膨胀过程中产生强烈的挤气旋流.将它应用在高速汽油机中,可明显提高低速时混合气的燃烧速率和火焰传播速率,从而全面改善内燃机的低速性能.实验研究表明,在压缩比和空燃比及点火提前角相同的条件下使用该燃烧室,与原机相比,尽管发动机的最大输出功率和转矩稍有下降,但最大转矩时的转速明显降低;转矩和燃油消耗率随转速降低明显改善,低速转矩最大提高率为8.40/0.低速时燃油消耗的最大降低率为9.80/0.
In order to solve the problem of low turbulence intensity and insufficient combustion process at low speed of a small high-speed gasoline engine, a new type of combustion chamber has been developed, which has been patented and designed using the distal and proximal ends of the spark plug on the top of the piston Of the special protrusions that match the shape of the cylinder head can produce strong squish swirling during the compression and expansion of the engine.It can be used in high speed gasoline engine to obviously improve the combustion rate and flame propagation rate of the mixture at low speed, Improve the low-speed performance of the internal combustion engine.Experimental studies show that the combustion chamber is used under the same compression ratio and air-fuel ratio and ignition advance angle, compared with the original engine, although the maximum output power and torque of the engine slightly decreased, The torque at the maximum torque is significantly reduced, while the torque and fuel consumption at the low speed are significantly reduced with the decrease of the speed. The maximum increase rate of low speed torque is 8.40 / 0. The maximum reduction rate of fuel consumption at low speed is 9.80 / 0.