To discuss control of heavy-duty diesel spray nozzle. Analyzed FIE (Fuel Injection Device) key components of the fuel injector flow. Optimization of nozzle control the flow of fuel flows and improve the efficiency. FIE need to generate high injection pressure, to form a better atomization and higher air utilization. But the higher injection pressure will cause the pump to increase the driving torque, increase the pump size and cost increase. In order to improve the fuel nozzle mobile performance, analysis of the nozzle and the development of an optimized nozzle design computer model simulation theory analysis.
Also this method is verified by experiment results.
Improved fuel injection fuel injection equipment required to install (called FIE) when used for heavy-duty diesel engines. Be subject to a number of technical improvements. Among them, the most important variable is the high injection pressure and injection timing control. Need to optimize fuel injection distribution. For example, to produce the best spray are considered to be more use of small diameter nozzle. Small pressure chamber is also indispensable, step. Using a small pressure chamber with or without pressure chamber Vc () injector to reduce hydrocarbon (H (:) is an effective way. Nozzle main objective is to optimize the improved fuel atomization and spray forming, to improve the air efficiency. To this end,
Must be considered the minimum pressure chamber to control the spray characteristics.