Abstract: An exhaust gas apparatus suppresses sound pressure level from increasing, and reducing its weight and production cost without need of a sub-muffler in a tail pipe and a sound deadening device having an air column resonance of a large capacity provided at the upstream opened end of the tail pipe. The exhaust gas apparatus is provided with an exhaust gas pipe, an upstream opened end connected to the sound deadening device positioned at the upstream side of an exhaust gas discharging direction, and a downstream opened end through which the exhaust gas is discharged to the atmosphere. A plate is provided at least one of the upstream opened end and the downstream opened end in opposing relationship with the exhaust gas discharging direction, and formed with an opened portion. The exhaust gas pipe is formed at its peripheral wall axially inwardly spaced apart from the plate with a through bore.

Abstract: An exhaust gas apparatus of an internal combustion engine is capable of suppressing the sound pressure level from being increased by the air column resonance in the tail pipe. The exhaust gas apparatus being provided with an exhaust gas pipe at the downstream side of an internal combustion engine in the exhaust gas direction of an exhaust gas flow, the exhaust gas pipe having an upstream opening end at one end portion thereof and connected with a sound deadening device at the upstream side in the exhaust gas direction of the exhaust gas flow, and a downstream opening end at the other end portion thereof for exhausting the exhaust gas flow to the atmosphere.

Abstract: An exhaust apparatus for internal combustion engines which can reduce exhaust noises, its weight and production cost with no need to provide a sub-muffler. The exhaust apparatus is provided with an inner pipe having the upstream open end and the downstream open end is disposed in the tail pipe, and the upstream open end of the inner pipe is protruded outwardly from the inside of the tail pipe to be extended into the resonance chamber, and thus the upstream open end is closed by the resonance chamber defined by the outer shell of the muffler, the end plate, and the partition plate.

Abstract: An exhaust apparatus for internal combustion engines which can reduce exhaust noises, its weight and production cost with no need to provide a sub-muffler. The exhaust apparatus is provided with an inner pipe having the upstream open end and the downstream open end is disposed in the tail pipe, and the upstream open end of the inner pipe is protruded outwardly from the inside of the tail pipe to be extended into the resonance chamber, and thus the upstream open end is closed by the resonance chamber defined by the outer shell of the muffler, the end plate, and the partition plate.

Abstract: A silencing apparatus for a vehicle includes: a muffler (1; 20; 30; 40) having a flattened sectional shape; an inlet pipe (7; 26; 36; 46); an outlet pipe (8; 27; 37; 47); and at least one partition plate (2, 3; 21, 22; 31, 32; 41, 42) that divides the inside of the muffler (1; 20; 30; 40) into a plurality of sound-deadening chambers. Each of the at least one partition plate (2, 3; 21, 22; 31, 32; 41, 42) has at least one communication hole. Within the muffler (1; 20; 30; 40), at least one among an opening of the inlet pipe (7; 26; 36; 46), an opening of the outlet pipe (8; 27; 37; 47), and the at least one communication hole is disposed at a position that is apart by a length equal to a half of the width of the muffler (1; 20; 30; 40) from one end of the muffler (1; 20; 30; 40) in the width direction thereof, and at least one among them is disposed at a position that is apart by a length equal to a quarter of the width from one end of the muffler (1; 20; 30; 40) in the width direction.

Abstract: A tail pipe part includes a tail pipe to constitute part of the tail pipe, and has a hollow member connected with the tail pipe in axial alignment with the tail pipe to be positioned within an area covering a node portion in a sound pressure distribution of an air column resonance caused in the tail pipe, and a short pipe included in the hollow member and having a predetermined length to extend in the axial direction of the tail pipe, the short pipe having an open end at the upstream end thereof and a closed end at the downstream end thereof, the closed end being constituted by a bottom plate positioned at almost the same position as that of the node portion in the sound pressure distribution of a standing wave formed by the air column resonance caused in the tail pipe.

Abstract: Directly above a heat recovering unit (30) configured to carry out heat exchange between exhaust gas and a heat medium so as to heat the heat medium, a condensing unit (40) is disposed to carry out heat exchange between the heat medium and an engine coolant so as to heat the engine coolant. A vapor supply pipe (50) couples an upper portion of the heat recovering unit (30) to a lower portion of the condensing unit (40). In an inner space of the condensing unit (40), an LLC pipe (42) through which the engine coolant flows is disposed so as to surround an opening portion of the vapor supply pipe (50).

Abstract: An exhaust apparatus for internal combustion engines which can reduce exhaust noises, its weight and production cost with no need to provide a sub-muffler. The exhaust apparatus is provided with an inner pipe having the upstream open end and the downstream open end is disposed in the tail pipe, and the upstream open end of the inner pipe is protruded outwardly from the inside of the tail pipe to be extended into the resonance chamber, and thus the upstream open end is closed by the resonance chamber defined by the outer shell of the muffler, the end plate, and the partition plate.

Abstract: An exhaust gas apparatus of an internal combustion engine is capable of suppressing the sound pressure level from being increased by the air column resonance in the tail pipe. The exhaust gas apparatus being provided with an exhaust gas pipe at the downstream side of an internal combustion engine in the exhaust gas direction of an exhaust gas flow, the exhaust gas pipe having an upstream opening end at one end portion thereof and connected with a sound deadening device at the upstream side in the exhaust gas direction of the exhaust gas flow, and a downstream opening end at the other end portion thereof for exhausting the exhaust gas flow to the atmosphere.

Abstract: A tail pipe part includes a tail pipe to constitute part of the tail pipe, and has a hollow member connected with the tail pipe in axial alignment with the tail pipe to be positioned within an area covering a node portion in a sound pressure distribution of an air column resonance caused in the tail pipe, and a short pipe included in the hollow member and having a predetermined length to extend in the axial direction of the tail pipe, the short pipe having an open end at the upstream end thereof and a closed end at the downstream end thereof, the closed end being constituted by a bottom plate positioned at almost the same position as that of the node portion in the sound pressure distribution of a standing wave formed by the air column resonance caused in the tail pipe.

Abstract: An exhaust gas apparatus suppresses sound pressure level from increasing, and reducing its weight and production cost without need of a sub-muffler in a tail pipe and a sound deadening device having an air column resonance of a large capacity provided at the upstream opened end of the tail pipe. The exhaust gas apparatus is provided with an exhaust gas pipe, an upstream opened end connected to the sound deadening device positioned at the upstream side of an exhaust gas discharging direction, and a downstream opened end through which the exhaust gas is discharged to the atmosphere. A plate is provided at least one of the upstream opened end and the downstream opened end in opposing relationship with the exhaust gas discharging direction, and formed with an opened portion. The exhaust gas pipe is formed at its peripheral wall axially inwardly spaced apart from the plate with a through bore.

Abstract: A muffler has a casing with a plurality of sound-muffling chambers, exhaust pipes that pass through at least two sound-muffling chambers and to pass through exhaust from an engine, a plurality of apertures provided in each exhaust pipe, and a plurality of valves provided in each of the apertures. In this muffler, the plurality of apertures are provided at the locations at which an exhaust flow from one aperture and an exhaust flow from another aperture do not interfere with each other. When there are two apertures, the apertures are provided at positions in the exhaust pipes at which the apertures do not face each other. For this reason, by avoiding interference between exhaust flows from the two apertures, it is possible to suppress an abnormal sound caused by the interference.

Abstract: A muffler has a casing with a plurality of sound-muffling chambers, exhaust pipes that pass through at least two sound-muffling chambers and to pass through exhaust from an engine, a plurality of apertures provided in each exhaust pipe, and a plurality of valves provided in each of the apertures. In this muffler, the plurality of apertures are provided at the locations at which an exhaust flow from one aperture and an exhaust flow from another aperture do not interfere with each other. When there are two apertures, the apertures are provided at positions in the exhaust pipes at which the apertures do not face each other. For this reason, by avoiding interference between exhaust flows from the two apertures, it is possible to suppress an abnormal sound caused by the interference.

Abstract: An exhaust system support structure for supporting an exhaust system on a device main body via a rubber material comprises a support portion connected to the rubber material and a heat shielding portion provided between a member constituting the exhaust system and the support portion so as to define a space. The heat shielding portion is provided such that said support portion is attached to a non-joined portion thereof that is not joined to the member constituting the exhaust system, and so as to be interposed between a connection site at which the rubbermaterial is connected to the support portion, and a site of the member constituting the exhaust system which is closest to the connection site.