| 摘要 |
PROBLEM TO BE SOLVED: To prevent combustion and dilution of lubricating oil on a cylinder liner wall surface or prevent formation of smoke caused by local air shortage in a neighborhood of a piston top surface and clevis area in a combustion chamber of a diesel engine including a group injection hole nozzle. SOLUTION: This diesel engine includes at least one group injection holes 24, 24 worked to provide a plurality of points of intersection of a nozzle longitudinal axial center and injection holes 24 provided on the nozzle at least in the longitudinal direction regardless of existence of sack volume of the fuel injection nozzle, and creating optional spray angle including a parallel condition regardless of whether diameters or flow rates of the bored injection holes 24 are same or not. At least one step 115 increasing height toward radial outer circumference is provided on a piston top surface 111. COPYRIGHT: (C)2009,JPO&INPIT
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