Diesel direct injection internal combustion engine for motor vehicle, has cylindrical head provided with housing in its upper surface with respect to piston, and groove and boss regulated according to desired swirl effect of intake gas load

摘要

The engine has a cylinder (12) closed by a cylindrical head (14) having a fuel injector (24) that comprises many holes for injecting the fuel. The head is provided with a housing (36) in its upper surface with respect to the piston, where the remaining surface of the head with respect to the piston is a tapered surface. A cylindrical piston (16) comprises an inlet opening (44) in its upper surface in a cavity (34) of the piston, where the cavity has a peripheral annular groove (38) and a central boss (40) that are regulated according to a desired swirl effect of the load of the intake gas.