EXHAUST TURBOSUPERCHARGER

• Main Author: SAWASHITA MASATO
• Format: Patent
• Language: English; Japanese
• Published: 05.09.2019
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

To minimize damage so that oil does not leak even if a rotating shaft is broken by the excessive rotation or the like of a turbine blade, in an exhaust turbosupercharger.SOLUTION: A turbine blade 1 is joined (fixed) to a small-diameter part 22 by welding with one end part of a rotating shaft 3 as the small-diameter part 22. A portion which is fit into a bearing hole 19 of a turbine housing 4 of the rotating shaft 3 is formed into a large-diameter part 18, and a seal material 21 is attached to the large-diameter part 18. When an excessive load is applied to the rotating shaft 3, the rotating shaft 3 is broken at the small-diameter part 22 at the outside of the large-diameter part 18. Therefore, oil supplied to a bearing part 12 for rotatably holding the rotating shaft 3 does not leak from the bearing hole 19. Accordingly, an exhaust turbosupercharger can be self-propelled in a maintenance factory or the like.SELECTED DRAWING: Figure 2 【課題】排気ターボ過給機において、タービン翼の過回転などによって回転軸が折損しても、オイルの漏洩が生じないように最小限度の被害に止める構成とする。【解決手段】回転軸３の一端部を小径部２２と成して、この小径部２２にタービン翼１が溶接で接合（固定）されている。回転軸３のうち、タービンハウジング４の軸受け孔１９に嵌まっている部分は大径部１８になっており、この大径部１８にシール材２１が装着されている。回転軸３に過負荷が掛かった場合は、回転軸３は、大径部１８の外側の小径部２２で折損する。このため、回転軸３を回転自在に保持する軸受け部１２に供給されているオイルが軸受け孔１９から揺曳することはない。従って、整備工場等に自走できる。【選択図】図２