Relation between High Pressure and Leakage from Sliding Portion on Diesel Fuel Injection System

ディーゼルエンジン用噴射システムにおける 高圧化による変形と摺動部リークの関係

Increased pressure, which has been strongly desired for diesel fuel injection equipment, has many technological challenges. One of the biggest ones is the increase in temperature caused by leakage fuel. The investigation of constant leakage from sliding portions inside injectors reveals that the deformed structure due to the increased pressure substantially affects leakage quantity. It also indicates that the leakage quantity which is in proportion to pressure by the base equation, is not, and takes higher degree than 1. Based on the results, the estimated leakage quantity has approximately threefold increase when pressure increases from 200 MPa to 300 MPa.ディーゼルエンジン用燃料噴射装置は高圧化のニーズが高い.最大の課題の1 つはリーク燃料による高温化.部材摺動部で常時発生しているリークを調査した結果,高圧化に伴う構造変形がリーク量に与える影響が大きいことを確認.条件によっては,構造変形がない場合の約2 倍のリーク量となる.


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  • Accession Number: 01666773
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Apr 23 2018 4:47PM