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与其他直喷燃烧系统相比,汽油直喷点燃式发动机采用的充量运动控制型燃烧系统具有良好的燃油经济性和排放特性。它能在整个发动机工况范围内实现稳定燃烧。由于新燃烧系统的喷油和点火定时对排放和着火安全性几乎没有影响,因而它能容易地在特定的直喷工作条件下应用。发动机实机试验和光学研究与CFD(计算流体动力学)计算相结合能在各种设计限定的边界条件下使工作过程有效优化。废气再循环余量大能使NO_x排放大幅度降低,从而有助于满足未来的排放标准。除了良好的部分负荷性能外,新的燃烧概念还显示出很好的全负荷性能。紧凑的中心布置燃烧室完全能满足均匀混合气运行的要求。此外,采用滚针轴承指状从动件能获得一种合适的气缸盖设计,它能满足新燃烧概念的所有要求,并确保气门传动机构的摩擦最小。
In contrast to other direct injection combustion systems, the charge-rich motion-controlled combustion systems used in gasoline direct injection ignition engines have good fuel economy and emission characteristics. It provides stable combustion over the entire engine operating range. Since the injection and ignition timing of the new combustion system has little impact on emissions and fire safety, it can easily be used under specific direct injection operating conditions. Engine real-world experiments and optical studies in combination with computational fluid dynamics (CFD) calculations effectively optimize the working process under a variety of design-defined boundary conditions. Large exhaust gas recirculation allowances significantly reduce NO x emissions, helping to meet future emission standards. In addition to good partial load performance, the new combustion concept also shows good full load performance. The compact center-mounted combustion chamber perfectly meets the requirements of a homogeneous mixture operation. In addition, the use of needle roller follower follower to obtain a suitable cylinder head design that meets all the requirements of the new combustion concept and ensures minimal friction of the valve train.