公开(公告)号：US20210180508A1

公开(公告)日：2021-06-17

申请号：US17056786

申请日：2019-05-29

申请人： Scania CV AB

发明人： Anders JÄGER ,  Thomas HÄLLQVIST ,  Daniel NORLING

IPC分类号： F02B23/06 ,  F02F3/26 ,  F02F3/24 ,  F02F3/28 ,  F02M61/18

摘要： A diesel engine includes at least one cylinder (1) with a piston (2) having a piston bowl (3). A fuel injector (6) is configured to direct a fuel spray towards a target area (21) on an annular wall section (22) of the piston bowl so as to make a flame (20) formed by ignition of the fuel spray hit the target area. The target area borders, via a flow separation edge (23), on a lowered flow separation area (24) on the annular wall section so as to give this annular wall section a stepped configuration. The flow separation edge and flow separation area are configured to induce the formation of a vortex-filled wake between the flame and the flow separation area on the downstream side of the flow separation edge when the flame flows from the target area, across the flow separation edge and over the flow separation area.