E-STAGE COMBUSTION SYSTEM ENGINE BY DIRECT INJECTION COLLISION DIFFUSION AND COMBUSTION SYSTEM THEREOF

摘要

PURPOSE:To realize open type 2-stage combustion with quick transition and development of the combustion response of an internal combustion engine from the excessive rich area fuel reaction to the excessive lean area reaction. CONSTITUTION:A collision diffusion fuel group of fuel jet 2 is supplied into a division area 4 constituted by a annular wall 3 from a cylinder head part 17 and force squish flow 7 generated near the upper dead center is turned by the annular wall, so that the flow of the fuel in the division area into a piston cavity 16 is held temporarily to make rich mixture reaction area in the division area. The engine performance is improved and the pollusion by exhaust is reduced by 2-stage combustion system for transiting and developing the rich mixture reaction area quickly to an air area with a variable throttle mechanism between the cavity and squish area and reverse squish flow after the upper dead center 5.