Because of the high pressure common rail injection system is very high injection pressure, so the spray nozzle hole sectional area of the small companies such as BOSCH the spray nozzle hole diameter of 0.169 mm �� 6, in such a small nozzle diameter and such a high The injection pressure, the fuel flow in extreme instability, oil spray cone beam angle, better fuel atomization, but through distance smaller, it should change the original diesel engine inlet swirl intensity, and combustion chamber shape best to ensure that the combustion process.

The injector solenoid valve, common-rail system requirements it will have sufficient speed to open, taking into account pre-injection diesel engine performance is to improve an important injection, the control solenoid valve response time should be shortened. Electromagnetic valve on the larger study has been reported in the literature, this article is no longer this analysis.