VEHICLE

• Main Authors: NAKANO HARUTA, KINOSHITA MASAAKI, MINOKOSHI HIROYUKI, TAN ISAO, FUKUTOMI SHUNSUKE, SHIMURA SUSUMU
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2023
• 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; STEAM ENGINES; WEAPONS

To increase an intake air amount so as to perform warming up of a catalyst even when an outside pressure is low.SOLUTION: A vehicle includes a catalyst provided in an exhaust flow passage 130, a muffler 150 provided in the downstream side of the catalyst in the exhaust flow passage 130, an additional flow passage 132 having an inlet 132a and an outlet 132b inside the muffler 150, and a valve 180 provided in the additional flow passage 132 and opened when exhaust gas is in a positive-pressure state and closed when the exhaust gas is in a negative-pressure state.SELECTED DRAWING: Figure 2 【課題】外気圧が低くても吸入空気量を増加させて、触媒の暖機を行う。【解決手段】車両は、排気流路１３０に設けられる触媒と、前記排気流路１３０における前記触媒の下流側に設けられる消音器１５０と、消音器１５０の内部に入口１３２ａおよび出口１３２ｂを有する追加流路１３２と、前記追加流路１３２に設けられ、排気ガスが正圧の際に開かれ、排気ガスが負圧の際に閉じられる弁１８０と、を備える。【選択図】図２