| 摘要 |
When the body of the injector nozzle is manufactured, the body is tempered at a predetermined temperature which is higher than a receiving-heat-temperature. A temperature of the body is increased up to the receiving-heat-temperature, receiving a heat from a combustion chamber of an internal combustion engine during the engine is running. The body is hardly softened due to tempering during its operation. When the seat sits on the seat face, the seat tends to be abrasive wore.
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