EGR VALVE DEVICE

• Main Author: SUGIHARA KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 27.05.2021
• Subjects: BLASTING; COMBUSTION ENGINES; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; THERMAL INSULATION IN GENERAL; WEAPONS

To prevent twisting of a seal member when assembling a housing to a counterpart member, to improve a sealing property by the seal member, and to reduce a reaction load of the housing due to the seal member.SOLUTION: An EGR valve device 1 is equipped with a housing 12 including a channel 11, a valve body 14 opening/closing the channel 11, a valve shaft 15 provided with the valve body 14, and an outer housing 3 including an assembling hole 21 for the housing 12 and other channels 22 and 23. While the housing 12 is assembled in the assembling hole 21, an inlet 11a and an outlet 11b of the channel 11 are communicated to other channels 22 and 23, and seal members 18 and 19 are provided between the housing 12 and the outer housing 3 corresponding to a vicinity of the inlet 11a and the vicinity of the outlet 11b. Assembling grooves 31 and 32 are formed on an outer surface of the housing 12, and the shapes of the parts corresponding to the assembling grooves 31 and 32 of the seal members 18 and 19 have the same outer shapes as the assembling grooves 31 and 32 or shapes adding an interference to the outer shapes.SELECTED DRAWING: Figure 1 【課題】ハウジングを相手部材へ組み付けるときのシール部材の捩じれを防止し、シール部材によるシール性の向上とシール部材によるハウジングの反力負荷の低減を図ること。【解決手段】ＥＧＲバルブ装置1は、流路11を含むハウジング12と、流路11を開閉する弁体14と、弁体14を設けた弁軸15と、ハウジング12のための組み付け孔21と別の流路22,23を含む外ハウジング3とを備え、ハウジング12が組み付け孔21に組み付けられた状態で、流路11の入口11aと出口11bが別の流路22,23に連通し、入口11aの近傍及び出口11bの近傍に対応してハウジング12と外ハウジング3との間にシール部材18,19が設けられる。ハウジング12の外面には組み付け溝31,32が形成され、シール部材18,19の組み付け溝31,32に対応する部分の形状が、組み付け溝31,32と同一の外形状又は外形状に締め代を加えた形状を有する。【選択図】図１