US 12,460,570 B2
Exhaust gas pipe, and engine
Hajime Suzuki, Sagamihara (JP); Minoru Esaki, Sagamihara (JP); and Takeshi Kadowaki, Sagamihara (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/273,500
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Dec. 2, 2021, PCT No. PCT/JP2021/044326
§ 371(c)(1), (2) Date Aug. 31, 2023,
PCT Pub. No. WO2022/158136, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 2021-009890 (JP), filed on Jan. 25, 2021.
Prior Publication US 2024/0093628 A1, Mar. 21, 2024
Int. Cl. F01N 13/18 (2010.01); F16L 23/032 (2006.01); F16L 27/053 (2006.01)
CPC F01N 13/1827 (2013.01) [F16L 23/032 (2013.01); F16L 27/053 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An exhaust gas pipe comprising:
a plurality of pipe bodies which are formed in a tubular shape centered on an axis and are arranged in a direction of the axis and through which an exhaust gas led from an engine body flows;
a connection portion connecting a pair of the pipe bodies adjacent to each other in the direction of the axis; and
a gasket which is provided between the pipe body and the connection portion,
wherein a flange projecting toward an outer peripheral side is provided at an end portion of the pipe body in the direction of the axis,
wherein the connection portion includes a main connection body which has a tubular shape centered on the axis and a pressing ring which is provided with a facing surface facing the flange while sandwiching the gasket in a gap between the flange and the facing surface, and
wherein the exhaust gas pipe further comprises:
coupling members which are provided at intervals in a circumferential direction and coupling the flange and the pressing ring to each other; and
a deformation prevention member that is provided in an outer peripheral region of the gap,
wherein the deformation prevention member includes a tapered portion of which an axial dimension gradually decreases from an outer radial side to an inner radial side,
wherein a plurality of the deformation prevention members are provided at intervals in the circumferential direction, and
wherein the exhaust gas pipe further comprises a wire connecting the plurality of deformation prevention members.