FUEL INJECTION VALVE

• Main Authors: MATSUDA TSUTOMU, AOTA AKIHITO, KAKIMOTO YASUSHI
• Format: Patent
• Language: English; Japanese
• Published: 05.12.2019
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

To provide a fuel injection valve capable of securing suitable separation distances between water pouring check valves incorporated therein while suppressing an increase in the construction size.SOLUTION: In the fuel injection valve for injecting fuel and water from an injection hole into a combustion chamber in a cylinder of a marine diesel engine, a first water pouring check valve for opening/closing a first water pouring path is arranged on the injection hole side with respect to a needle valve spring for energizing a needle valve to the injection hole side to openably close a front end oil path communicating with a fuel oil path and the injection hole, and a second water pouring check valve for opening/closing a second water pouring path is arranged on the opposite side to the injection hole. Water in the first water pouring path is poured from the arrangement position of the first water pouring check valve into the fuel oil path, and water in the second water pouring path is poured from the arrangement position of the second water pouring check valve into the fuel oil path.SELECTED DRAWING: Figure 1 【課題】内蔵される各注水逆止弁間の好適な離間距離を確保するとともに、構造の大型化を抑制することができる燃料噴射弁を提供すること。【解決手段】舶用ディーゼルエンジンのシリンダ内の燃焼室へ燃料および水を噴孔から噴射する燃料噴射弁において、燃料油路と噴孔とに通じる先端油路を開閉可能に閉塞するように針弁を噴孔側に付勢する針弁ばねを基準として、第１の注水路を開閉する第１の注水逆止弁を噴孔側に配置し、第２の注水路を開閉する第２の注水逆止弁を噴孔とは反対側に配置する。第１の注水路内の水は第１の注水逆止弁の配置位置から燃料油路内に注入され、第２の注水路内の水は第２の注水逆止弁の配置位置から燃料油路内に注入される。【選択図】図１