Abstract
KEYWORDS:
finite element method, particle tracking, steady-state flow field, air/fuel ratio
ABSTRACT:
Taking into account that the exhaust emissions of the automotive became acute, as well as that the D.I. Diesel engines are available for the whole range of trucks and for almost 50% of the cars, diminishing those exhaust is a very important problem. The authors have determined the influence of the geometry of the inlet manifold at a D.I. Diesel engine, equipped by spherical rotary valves, using the Finite Element Method. It was tested the influence of the inlet manifold geometry upon the swirl ratio for different burning room architecture. As a result of the tests, the authors present the criterions to choose the inlet manifold geometry function of the burning chamber architecture, as way as the exhaust emission value to be minimal, without diminishing the performances of the engine.