Engine block's cylinder head for e.g. diesel engine, has inlet conduit including inner surface having wheel that is turned opposite to support plan of head's lower face and is linked to work areas to form edge toward inner side of conduit

摘要

The head has an inlet conduit (62) that is opened in an air intake opening (81). An inner surface (70) of a wall of the conduit presents, at level of a discharge end (69) of the conduit, a reception housing (71) for receiving a valve seat. The inner surface of the wall presents work areas i.e. front and rear parts (72, 73), in upstream of the housing, next to the housing. The inner surface has a flat wheel (75) that is turned opposite to a support plan of a lower face of the head. The wheel is connected to the work areas to form a projecting edge (74) toward inner side of the conduit.