PROBLEM TO BE SOLVED: To provide an exhaust device for a vehicle, capable of normally detecting the NOx concentration of exhaust gas without involving an increase in the size and cost.SOLUTION: The exhaust device includes an exhaust pipe 20 having an upstream end 24 connected to an aftertreatment device and a downstream end being at a higher position and encircling an exhaust port 25, a NOx sensor 30 held by the exhaust pipe 20, and a waterproof wall 40 provided inside the exhaust pipe 20, the waterproof wall 40 having a shape to cut off the NOx sensor 30 and the exhaust port 25 from each other while leaving a gas inlet 41 to allow the entry of exhaust gas from the aftertreatment device to the NOx sensor 30.SELECTED DRAWING: Figure 6
【課題】大型化及びコストの増大を伴うことなく排気ガスのNOx濃度の正常な検出を行うことが可能な車両の排気装置を提供する。【解決手段】排気装置は、後処理装置に接続される上流端24とそれよりも高い位置で排気口25を囲む下流端とを有する排気管20と、排気管20に保持されるNOxセンサ30と、排気管20の内部に設けられる防水壁40と、を備える。防水壁40は、後処理装置からNOxセンサ30への排気ガスの進入を許容するガス入口41を残しながらNOxセンサ30と排気口25との間を遮断する形状をもつ。【選択図】図6
EXHAUST DEVICE FOR VEHICLE
車両の排気装置
2017-10-05
Patent
Electronic Resource
Japanese
IPC: | F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES |