| 摘要 |
PROBLEM TO BE SOLVED: To keep fuel spray to a combustion chamber favorable, maintain engine performance and secure reliability by keeping low the temperature of the seat part of a nozzle tip body in a fuel injection valve to prevent deformation, wear or the like in a seat part. SOLUTION: A structure includes a cooling passage 32 communicated to a passage 33 for receiving fuel from a fuel injection pump of a nozzle tip body 3 in a fuel injection nozzle 1 and performs cooling along an axial center of the nozzle tip body 3 by a fuel. COPYRIGHT: (C)2011,JPO&INPIT
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