FUEL INJECTION VALVE

PROBLEM TO BE SOLVED: To enable suitable changeover of fuel injection.SOLUTION: A fuel injection part 20 includes a nozzle body 22 shaped cylindrical and having a sack chamber 27 and an injection hole 28 extending from the sack chamber 27, at the front end, and a needle 30 provided in the nozzle bod...

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Bibliographic Details
Main Authors TAKITA YUKI, YASUDA KOICHIRO, SUZUKI MASAYUKI
Format Patent
LanguageEnglish
Japanese
Published 22.11.2018
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Summary:PROBLEM TO BE SOLVED: To enable suitable changeover of fuel injection.SOLUTION: A fuel injection part 20 includes a nozzle body 22 shaped cylindrical and having a sack chamber 27 and an injection hole 28 extending from the sack chamber 27, at the front end, and a needle 30 provided in the nozzle body 22 in a reciprocating manner. The needle 30 seated on the inner peripheral face of the nozzle body 22 is left therefrom, and along therewith fuel is injected from the injection hole 28. The needle 30 has a through passage 36 extending in the axial direction. A passage inlet 36a of the through passage 36 is provided in the needle 30 at its downstream side further than a seat part 34a to be seated on the inner peripheral face of the nozzle body 22, and at its upstream side further than the sack chamber 27.SELECTED DRAWING: Figure 1 【課題】燃料噴霧を好適に切り替えることを可能とする。【解決手段】燃料噴射部20は、筒状をなし先端部にサック室27及び該サック27室から延びる噴孔28を有するノズルボディ22と、ノズルボディ22内に往復動可能に設けられるニードル30とを備え、ニードル30がノズルボディ22の内周面に対して着座した状態から離座することにより、噴孔28から燃料を噴射する。ニードル30は、その軸方向に延びる貫通通路36を有している。貫通通路36の通路入口36aは、ニードル30においてノズルボディ22の内周面に対して着座するシート部34aよりも下流側であって、かつサック室27よりも上流側に設けられている。【選択図】 図1
Bibliography:Application Number: JP20170085388