| 摘要 |
PROBLEM TO BE SOLVED: To provide a durability evaluation device capable of evaluating a fuel injection means repeating separation and contact of a nozzle body and a needle with simulating operation of an internal combustion engine with high reproducibility. SOLUTION: Durability evaluation of the contact part of the nozzle body and the needle can be performed by performing durability evaluation with assembling the injector 1 in an injection vessel 11 and actually injecting from the injector 1. Also, since durability evaluation test is performed by heating a valve seat of the nozzle body 4 to roughly the same temperature as during operation of the internal combustion engine by a heating heater 35 provided on a nozzle part 2, durability evaluation of the contact part of the nozzle body 4 and the needle can be performed based on high reproducibility simulating operation of the internal combustion engine and accuracy of the durability evaluation can be increased. COPYRIGHT: (C)2007,JPO&INPIT
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