ENGINE EXHAUST DEVICE

• Main Authors: KAMO HIROAKI, ISHIDA TAKUYA, KUSAKAI RYOJI
• Format: Patent
• Language: English; Japanese
• Published: 15.03.2018
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To efficiently activate a monolith catalyst 12 with a limited heat quantity of exhaust gas and, in particular, to expedite reactivation of the monolith catalyst 12 after the same is cooled by low temperature exhaust gas.SOLUTION: A monolith catalyst 12 is stored in a case 11 with an axial center thereof being almost horizontal. The case 11 has: an inflow section 13 which faces an edge face at an upstream side of the monolith catalyst 12 and allows exhaust gas to flow into the monolith catalyst 12 in an almost horizontal direction; and an outflow section 14 which faces the inflow section 13 and allows the exhaust to flow out of the monolith catalyst 12 from a downstream side thereof in the almost horizontal direction. Respective centers of the inflow section 13 and the outflow section 14 are biased downward with respect to the axial center of the monolith catalyst 12.SELECTED DRAWING: Figure 2 【課題】排気ガスが有する限られた熱量でモノリス触媒１２を効率良く活性にする、特にモノリス触媒１２が低温の排気ガスで冷やされた後の再活性を早める。【解決手段】モノリス触媒１２は軸心を略水平にした状態でケース１１に収容されている。ケース１１には、モノリス触媒１２の上流側の端面に相対し排気ガスをモノリス触媒１２に略水平に流入させる流入口部１３と、流入口部１３に相対しモノリス触媒１２の下流側から排気ガスを略水平に流出させる流出口部１４とが設けられている。流入口部１３及び流出口部１４各々の中心はモノリス触媒１２の軸心に対して下方にオフセットしている。【選択図】図２