水蒸气对汽油燃烧、爆震过程的影响

The Influence of Aqueous Vaponr on Gasoline Fuel Combustion and Detonation

作者在卧式激波管中利用石英压电传感器,聚偏氟乙烯(PVF_2)技术和红外探测仪成功地研究了水蒸气对汽油燃烧过程及爆震过程的影响。研究表明:水蒸气对汽油从燃烧转变成爆震的过程有较强的抑制作用,它能使爆炸波的传播速度、压力明显低于不加水蒸气时的状况,从而提高了汽油的抗爆震特性、延长了内燃机的寿命。

In a horizontal shock tube, the influence of aqueous vapour on gasoline fuel combustion and detonation is successfully studied by means of quartz transducer, PVF_2 technique and infrared detector. The investigation results show that the aqueous vapour is possessed of an intensively suppressive effect to fuel combustion from normal to detonation. It could also make the spread velocity and pressure of explosion wave in combustion much slower and lower than in gasoline combustion without adding aqueous vapour. Thereby, the antidetonation behaviour is improved and the service life of the engine is extended.