Abstract: An exhaust system is provided to an engine having an output shaft extending in a vehicle front-and-rear direction. The system includes an exhaust passage including a first passage part extending forward from a turbine housing of a turbocharger, a fourth passage part extending in the front-and-rear direction below the turbine housing, a second passage part disposed so that it extends vertically and its center axis inclines forward and upward, and a third passage part having a downstream connecting part extending forward from a front end of the fourth passage part, and an upstream connecting part extending forward and upward from an upper part of a front end of the downstream connecting part. The downstream part has, at a lower part of its front end, an attaching part extending downwardly from a lower edge of the upstream part, and to which a sensor or an injector is attached.

Abstract: An exhaust system provided to an engine having an output shaft extending in a specific direction, includes an exhaust passage, a turbocharger having a turbine housing, and purifying parts. The exhaust passage includes a first passage part extending to one side in the specific direction from the turbine housing, a third passage part extending in the specific direction below the turbine housing, and a second passage part extending upward from one end part of the third passage part in the specific direction. A center axis of the second passage part inclines so that an upper end thereof is located on one side of a lower end in the specific direction. The first passage part has in an upper surface thereof an inclined part to which one of a sensor configured to detect a property of exhaust gas and an injector configured to inject fluid into exhaust gas, is attached.

Abstract: A motor vehicle (100) on which a vehicle engine (1) is mounted is described, the vehicle engine (1) including: an exhaust purification system (70) housing a GPF device (73) for purifying exhaust gas; and an EGR passage (52) connected to a portion of the exhaust purification system located downstream of the GPF device, and the engine is mounted in an engine compartment (R) defined in a front portion of a vehicle body. The exhaust purification system is located forward of a dash panel (103) constituting the engine compartment, and is positioned to extend toward a tunnel portion (T) of the dash panel. An upstream end portion (52c) of the EGR passage is connected to a lower portion of the exhaust purification system in a vertical direction of the vehicle.

Abstract: An exhaust system provided to an engine having an output shaft extending in a specific direction, includes an exhaust passage, a turbocharger having a turbine housing, and purifying parts. The exhaust passage includes a first passage part extending to one side in the specific direction from the turbine housing, a third passage part extending in the specific direction below the turbine housing, and a second passage part extending upward from one end part of the third passage part in the specific direction. A center axis of the second passage part inclines so that an upper end thereof is located on one side of a lower end in the specific direction. The first passage part has in an upper surface thereof an inclined part to which one of a sensor configured to detect a property of exhaust gas and an injector configured to inject fluid into exhaust gas, is attached.

Abstract: An exhaust system is provided to an engine having an output shaft extending in a vehicle front-and-rear direction. The system includes an exhaust passage including a first passage part extending forward from a turbine housing of a turbocharger, a fourth passage part extending in the front-and-rear direction below the turbine housing, a second passage part disposed so that it extends vertically and its center axis inclines forward and upward, and a third passage part having a downstream connecting part extending forward from a front end of the fourth passage part, and an upstream connecting part extending forward and upward from an upper part of a front end of the downstream connecting part. The downstream part has, at a lower part of its front end, an attaching part extending downwardly from a lower edge of the upstream part, and to which a sensor or an injector is attached.

Abstract: A vehicle engine 2 comprises an exhaust system having an exhaust manifold 12 and an exhaust purification device 18. The exhaust manifold 12 is disposed at a predetermined distance from a dash panel 106 constituting a body of the vehicle 100, the exhaust purification device 18 is disposed in a position overlapping a floor tunnel region 114, formed by a floor tunnel of the body, and is disposed below the exhaust manifold 12 and to one side of the center of the engine 2 in the cylinder-array direction, as viewed from the longitudinal direction of the vehicle 100. An exhaust purification device introduction passage 17 connecting the exhaust manifold 12 and the exhaust purification device 18 is disposed on the other side of the center of the exhaust manifold 12 in the cylinder-array direction, and extends below the exhaust manifold 12 to be connected to the exhaust purification device 18.

Abstract: An engine (1) includes: an exhaust purification system (70) housing a GPF device (73) for purifying exhaust gas; and an EGR passage (52) connected to a portion of the exhaust purification system located downstream of the GPF device, and the engine is mounted in an engine compartment (R) defined in a front portion of a vehicle body. The exhaust purification system is located forward of a dash panel (103) constituting the engine compartment, and is positioned to extend toward a tunnel portion (T) of the dash panel. An upstream end portion (52c) of the EGR passage is connected to a lower portion of the exhaust purification system in a vertical direction of the vehicle.

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a tubular connecting member. The connecting member includes: a first opening; a second opening; and a bend connecting. A downstream end surface of the first catalyst is connected to the first opening, and an upstream end surface of the second catalyst is connected to the second opening. The downstream end surface and the upstream end surface form a dihedral angle within a range from 60 to 120 degrees. A part of the upstream end surface of the second catalyst includes an overlap that is close and opposed to a part of a surface of the first catalyst. The bend of the connecting member includes: a first wall; a second wall; and a connector. The first wall has a curve. The curvature radius of the first wall is greater than the predetermined curvature radius.

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a connecting member shaped into a tube and forming a part of the exhaust path, and connecting the first catalyst to the second catalyst. A downstream end surface of the first catalyst and an upstream end surface of the second catalyst form a dihedral angle within a range from 60 degrees to 120 degrees. A part of the upstream end surface of the second catalyst is close to and faces a part of a side surface of the first catalyst. On a cross-section including a central axis of the first catalyst and being parallel to a central axis of a second catalyst, a length of the part of the side surface of the first catalyst is longer than or equal to 10% and shorter than 50% of an entire length of the first catalyst.

Abstract: A downstream-side heat insulating material which is provided at a side face of a GPF which is positioned on a downstream side, in an exhaust-gas flowing direction, of plural in-line arranged catalysts has a first opening portion and a second opening portion which are provided for attaching supporting members.

Abstract: An exhaust-gas discharge port to discharge a main flow of exhaust gas passing through an exhaust-gas purifying device is provided at a position which is offset, on one side, from a center axis of the purifying-device body, and an EGR-gas takeout port is provided at a position which is offset, on an opposite side to the exhaust-gas discharge port, from the center axis of the purifying-device body.

Abstract: A downstream-side exhaust-gas takeout portion of a pressure-difference detector is provided between an exhaust-gas discharge port of a downstream-side cover and an EGR-gas takeout port so that a stable exhaust-gas pressure can be taken out (detected).

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; a connection member and an exhaust gas outlet pipe. The first catalyst has a downstream end face and the second catalyst has an upstream end face. The downstream end face and the upstream end face form a predetermined dihedral angle. The upstream end face of the second catalyst and a side surface of the first catalyst closely face each other to form an overlap. A center axis of the exhaust gas outlet pipe is offset further toward the first catalyst than a center axis of the second catalyst is.

Abstract: A vehicle engine 2 comprises an exhaust system having an exhaust manifold 12 and an exhaust purification device 18. The exhaust manifold 12 is disposed at a predetermined distance from a dash panel 106 constituting a body of the vehicle 100, the exhaust purification device 18 is disposed in a position overlapping a floor tunnel region 114, formed by a floor tunnel of the body, and is disposed below the exhaust manifold 12 and to one side of the center of the engine 2 in the cylinder-array direction, as viewed from the longitudinal direction of the vehicle 100. An exhaust purification device introduction passage 17 connecting the exhaust manifold 12 and the exhaust purification device 18 is disposed on the other side of the center of the exhaust manifold 12 in the cylinder-array direction, and extends below the exhaust manifold 12 to be connected to the exhaust purification device 18.

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a tubular connecting member. The connecting member includes: a first opening; a second opening; and a bend connecting. A downstream end surface of the first catalyst is connected to the first opening, and an upstream end surface of the second catalyst is connected to the second opening. The downstream end surface and the upstream end surface form a dihedral angle within a range from 60 to 120 degrees. A part of the upstream end surface of the second catalyst includes an overlap that is close and opposed to a part of a surface of the first catalyst. The bend of the connecting member includes: a first wall; a second wall; and a connector. The first wall has a curve. The curvature radius of the first wall is greater than the predetermined curvature radius.

Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a connecting member shaped into a tube and forming a part of the exhaust path, and connecting the first catalyst to the second catalyst. A downstream end surface of the first catalyst and an upstream end surface of the second catalyst form a dihedral angle within a range from 60 degrees to 120 degrees. A part of the upstream end surface of the second catalyst is close to and faces a part of a side surface of the first catalyst. On a cross-section including a central axis of the first catalyst and being parallel to a central axis of a second catalyst, a length of the part of the side surface of the first catalyst is longer than or equal to 10% and shorter than 50% of an entire length of the first catalyst.

Abstract: An arc-shaped recess part is provided at a collective pipe of an exhaust manifold, whereby a flow of exhaust gas from one end side of cylinders is uniformized and then introduced into an exhaust-gas purifying device.

Abstract: In order to improve the performance of keeping the temperature of an exhaust purifier when a vehicle is running, an engine is provided with an exhaust passage behind a cylinder head in the vehicle longitudinal direction. The exhaust passage includes an exhaust manifold and an exhaust purification system disposed serially in a flow direction of an exhaust gas, the exhaust manifold being located upstream of the exhaust purification system. The exhaust purification system contains a GPF device configured to purify a gas. The exhaust purification system is located below the exhaust manifold, and is disposed so as to overlap the exhaust manifold in the vehicle transverse direction. The exhaust purification system is also disposed so as to protrude with respect to the exhaust manifold rearward in the vehicle longitudinal direction.

Abstract: A downstream-side heat insulating material which is provided at a side face of a GPF which is positioned on a downstream side, in an exhaust-gas flowing direction, of plural in-line arranged catalysts has a first opening portion and a second opening portion which are provided for attaching supporting members.

Abstract: A downstream-side exhaust-gas takeout portion of a pressure-difference detector is provided between an exhaust-gas discharge port of a downstream-side cover and an EGR-gas takeout port so that a stable exhaust-gas pressure can be taken out (detected).