To provide a diesel engine which can prevent a collision of fuel against the cylinder wall surface at the time of injection other than main injection, while securing the ignition combustibility of the fuel at the time of the main injection.
The diesel engine of the invention is structured so that a nozzle hole section 16 is provided at a top end portion of an injector 14 disposed slantingly on the periphery of a cylinder 3. The nozzle hole section 16 has a plurality of nozzle holes 17 located in a line in the radial direction of the cylinder 3. The nozzle holes 17 independently spray the fuel toward the interior of a combustion chamber 5 of a piston 4 so that the sprayed fuel may be in the shape of a sector. By adopting the above structure, the fuel from each nozzle hole 17 is mixed with surrounding air and atomized preferably so as to be compression-ignited and burned making use of compression air as a heat source. Further, at the time of the injection other than the main injection, the fuel is evaporated before it reaches the cylinder wall surface, thereby preventing the collision of the fuel which brings about oil dilution and disappearance of an oil film.
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto