抄録
In order to reduce particulate and NOx emission from the direct injection diesel engine, most researchers have been expecting the utilization of higher injection pressure and injection rate for improvement of diesel combustion. In the case of pump-line-nozzle system, the injection pipe line is very important with regard to the higher injection pressure. Namely, the pipe line must he able to resist not only high pressure but also cavitation erosion.
In this paper, the effect of sharp cutting at the end of fuel injection for change of fuel injection rate is discussed along with the visualization of cavitation bubbles in the injection pipe line. And the countermeasure of cavitation erosion is also described.
