嘴端压力和喷油嘴环状通路内压力的同步测量

Simultaneous Measuring of the Pressure in Nozzle Circular Channel and at Nozzle En-tering End

测量了喷油嘴环状通路内的压力，并与嘴端压力比较后，发现两者不仅在时间相住上，而且在数值上相差较大，表明，用嘴端压力来计算喷油规律存在较大的误差。因此，测量喷油嘴环状通路内压力，对供油系统的研究具有指导意义。

Pressure in the nozzle circular channel was measured and compared with the pressure at the nozzle entering end. It was found that difference exists between the two pressure upon time,Phase and especially upon the amount. This result shows the error is great for calculating the injection regularity with the pressure at the nozzle entering end. It is concluted that measuring the pressure in the circular channel is more benefical to the development of fuel injection system.