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Title
Japanese: 
English:Wear and Deformation of Nozzle Body Seat of Diesel Fuel Injector 
Author
Japanese: Butmarasri Athiwat, 佐藤 進, 小酒 英範.  
English: Athiwat Butmarasri, Susumu Sato, Hidenori Kosaka.  
Language English 
Journal/Book name
Japanese: 
English:International Journal of Automotive Technology 
Volume, Number, Page Vol. 23        pp. 243–255
Published date Feb. 21, 2022 
Publisher
Japanese: 
English:Springer Nature 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://link.springer.com/article/10.1007/s12239-022-0021-2?noAccess=true
 
DOI https://doi.org/10.1007/s12239-022-0021-2
Abstract Wear and deformation occur in the body seat of diesel fuel injector nozzles, thereby affecting fuel spray behaviors and injection characteristics. In this study, the effects of body seat temperature, test duration, temperature increase duration, tempering temperature, and tempering duration on the nozzle body seat are investigated using an injector testing device. Surface roughness measurements using a nano search microscope and hardness measurements of the nozzle body seat are performed to investigate the textural and physical characteristics of the nozzle body seat. In addition, optical measurements via optical microscopy and field emission scanning electron microscopy are performed to investigate the topographical information and microstructure of the nozzle body seat. The results show that the increase in wear and deformation is related to the higher test temperature and duration. Additionally, the tempering technique can suppress the deformation of the nozzle body seat.

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