Test results of common rail fuel injection system for diesel engines with fuel pressure up to 3000 bar

The article presents the results of examining Common Rail fuel injection system with fuel pressure from 1000 to 3000 bar. To investigate the injection system, the engineers of the Moscow Automobile and Road Construction University have developed an experimental setup. It includes the injection system with pressure up to 3000 bar, a system of injection quantity measuring, a system of injected spray visualization and an electronic control system. Common Rail injection system includes a standard high pressure fuel pump and a fuel rail. The research shows the significant correlation between injection pressure and geometric parameters of the fuel spray. For the experiments we used different injectors with different design features. At ultra high pressures Bosch CRI2.6 injector with included fuel volume and balanced control valve has demonstrated the best results. In the future this study will help to do the research into the single cylinder diesel engine. The experiments will be carried out in the Moscow Automobile and Road Construction University and focus on the effect of injection pressure on exhaust gases emission.

References

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