双燃料发动机低负荷时替代率的选取

随着国家对于排放问题的不断重视以及越来越严格的排放标准,将柴油发动机改装成为天然气-柴油双燃料发动机便成为行之有效的一个措施。在改装过程中,如何确定引燃油量的多少成为核心问题。文章针对双燃料发动机在油门开度为25%的低负荷,固定转速下,通过Converge软件仿真研究引燃油量对发动机动力性和经济性的影响并选取合适的替代率。对于双燃料发动机的改装具有参考价值。

The Selection of Substitution Rate under Low Load of Dual Fuel Engine

With more and more attention paid to the emission problem and more and more stringent emission standards.It is an effective measure to change the diesel engine into a natural gas-diesel dual-fuel engine.In the refit process,how to determine the amount of fuel injection becomes the core problem.In this paper,the influence of pilot diesel on engine power performance and economy is studied through CONVERGE software simulation at the fixed speed of dual-fuel engines at the throttle opening degree of 25%.It has reference value for the modification of dual-fuel engine.