Piston for combustion chamber of diesel combustion engine of vehicle i.e. motor vehicle, has castor i.e. plane, inclined in direction of bottom of bowl from external edge towards lip so as to create air mixture zone

摘要

The piston (1) has a central cavity i.e. bowl (2), for combusting fuel. A lip (3) is arranged at upper periphery of the bowl. An upper surface comprises a castor (14) i.e. plane, arranged between the lip and an external edge. A space is formed between the castor and a cylinder head in a castor zone (Z'). The castor is inclined in a direction of the bottom of the bowl from the external edge towards the lip so as to create air mixture zone.