Abstract: An attachment assembly for coupling a turbocharger heat-shield to an exhaust manifold heat-shield is provided. The turbocharger heat-shield includes a flange portion extending therefrom. The attachment assembly includes a bracket and a coupling mechanism. The bracket defines through holes. The bracket is in contact with the flange portion of the turbocharger heat-shield. The coupling mechanism includes a number of fastening members. The fastening members are received through the through holes of the bracket and corresponding holes of the flange portion and the exhaust manifold heat-shield respectively. Therefore, the coupling mechanism sealably couples the bracket with the flange portion and the exhaust manifold heat-shield.

Abstract: An internal combustion engine includes a cylinder block defining at least one cylinder, and a cylinder head coupled to the cylinder block. A modular exhaust manifold is coupled to the cylinder head and is configured to receive exhaust gas from the cylinder head. The modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis. Each of the exhaust manifold segments includes a segment of a water jacket tube defining a plurality of liquid coolant passages and a segment of an exhaust tube received within the water jacket tube segment. A joint between adjacent exhaust manifold segments includes a first sealing member configured to seal the exhaust tube at the joint and a second sealing member configured to seal at least one of the liquid coolant passages at the joint. The first and second sealing members are supported on and movable with different components.

Abstract: An internal combustion engine includes a cylinder block defining at least one cylinder, and a cylinder head coupled to the cylinder block. An exhaust manifold is coupled to the cylinder head and configured to receive exhaust gas from the cylinder head. The exhaust manifold includes a water jacket tube defining a plurality of liquid coolant passages and an exhaust tube received within the water jacket tube. The exhaust manifold also includes an air gap between the exhaust tube and the water jacket tube. A support mat is positioned in the air gap and compressed between an outer surface of the exhaust tube and an inner surface of the water jacket tube.

Abstract: An internal combustion engine includes a cylinder block defining at least one cylinder, and a cylinder head coupled to the cylinder block. A modular exhaust manifold is coupled to the cylinder head and is configured to receive exhaust gas from the cylinder head. The modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis. Each of the exhaust manifold segments includes a segment of a water jacket tube defining a plurality of liquid coolant passages and a segment of an exhaust tube received within the water jacket tube segment. A joint between adjacent exhaust manifold segments includes a first sealing member configured to seal the exhaust tube at the joint and a second sealing member configured to seal at least one of the liquid coolant passages at the joint. The first and second sealing members are supported on and movable with different components.

Abstract: A slip joint seal for a slip joint that includes an outer pipe and an inner pipe. The slip joint seal includes a clamshell clamp with an upper portion and a lower portion mateable to one another to form a hollow cylindrical ring. The ring has a base portion, a protruding portion, an inner surface, and an outer surface. A band fits around the base portion for securing the upper and lower portions to one another around the slip joint. The slip joint seal has a ceramic fiber filament fiber with a first portion that fits within the base portion and surrounds a portion of the slip joint around a slidable interface. A second portion fits within the protruding portion and fills an annular channel of the slip joint. The clamshell clamp and the filament discourage leaking from the interface between the inner pipe while allowing relative movement between the inner pipe and the outer pipe.

Abstract: An exhaust treatment device, comprising: a shell portion defining an inlet opening and an outlet opening; at least one catalyst brick being inserted within the shell portion; an insulative material disposed between the shell portion and the at least one catalyst brick; and a sensor receiving area formed in at least one catalyst brick.

Abstract: An end cone for an exhaust treatment device in accordance with an exemplary embodiment is provided. The end cone includes an outer wall and an inner cone. The inner wall is secured to the outer wall at one end. The inner wall includes at least one securement feature at another end. The at least one securement feature is configured to bias a portion of the inner wall away from the outer wall when a housing is fixedly coupled to the outer wall. The inner wall is configured to maintain the at least one securement feature in contact with the housing.

Abstract: An exhaust treatment device, comprising: a shell portion defining an inlet opening and an outlet opening; at least one catalyst brick being inserted within the shell portion; an insulative material disposed between the shell portion and the at least one catalyst brick; and a sensor receiving area formed in at least one catalyst brick.

Abstract: One embodiment of a gas treatment device comprises: a substrate, a secondary mat support having a secondary mat basis weight, wherein the secondary mat support is disposed concentrically about at least a portion of the substrate, and a primary mat support having a primary mat basis weight, wherein the primary mat support is disposed concentrically and substantially completely about the substrate, further wherein the secondary mat basis weight is substantially less than the primary mat basis weight. One embodiment of a method for making the gas treatment device comprises: determining a first selected length for the primary mat support sufficient for the primary mat support to be disposed substantially completely about the substrate concentrically, determining a parameter of at least one subcomponent of the gas treatment device, and determining a second selected length for the secondary mat support based on the parameter.

Abstract: An exhaust treatment device comprises: a substrate; an end-cone with a first end disposed about an end of the substrate and a second end comprising a snorkel; a mat support disposed over at least a portion of the end-cone, wherein the mat support comprises a slit in operable communication with a snorkel slot and a keyhole disposed at the opposite end of the slit as the snorkel slot, and wherein at least a portion of the snorkel protrudes through the snorkel slot; and a shell disposed around the mat support.

Abstract: An exhaust treatment device comprises: a substrate; an end-cone with a first end disposed about an end of the substrate and a second end comprising a snorkel; a mat support disposed over at least a portion of the end-cone, wherein the mat support comprises a slit in operable communication with a snorkel slot and a keyhole disposed at the opposite end of the slit as the snorkel slot, and wherein at least a portion of the snorkel protrudes through the snorkel slot; and a shell disposed around the mat support.