International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
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COMMON RAIL INJECTOR MODIFIED TO ACHIEVE A MODULATION OF THE INJECTION RATE

  • FICARELLA A. (University of Lecce, Department of Engineering for Innovation) ;
  • GIUFFRIDA A. (University of Catania, Department of Industrial and Mechanical Engineering) ;
  • LANZAFAME R. (University of Catania, Department of Industrial and Mechanical Engineering)
  • Published : 2005.06.01
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Abstract

Injection rate shape control is one feature of a diesel fuel injection system that is strongly desired at this time. In the conventional common rail system, it is difficult to control the injection rate since the fuel pressure is constant during the injection period, resulting in a nearly rectangular rate shape. In order to look into possible injection modulations, injectors equipped with standard and geometrically modified control valves were investigated in detail by means of computer modelling and simulation. Experiments were carried out to validate the feasibility of such a shaping. The results of this study show a noteworthy dependence of the fuel rate on geometrical modifications in the piloting stage of the injector.

Keywords

References

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