Abstract: A mixer for a vehicle exhaust system includes a mixer housing defining a mixer central axis and having an inlet at an upstream end and an outlet at a downstream end. An upstream baffle is in the housing at the upstream end and includes at least one inlet opening configured to receive engine exhaust gas. A downstream baffle is in the mixer housing at the downstream end such that the downstream baffle is axially spaced from the upstream baffle. The downstream baffle includes at least one outlet opening. A housing opening is formed within the mixer housing at a location between the upstream and downstream baffles, and which is configured to receive a doser. A cone has a cone outlet opening aligned with the housing opening, and an extension portion extends outwardly from a wide end of the cone to provide a wall that surrounds the cone outlet opening.

Abstract: An end cap mounting module comprises an end cap body that is cast as a single-piece component that has a first mount interface for connection to a catalytic converter and a second mount interface for connection to an exhaust pipe. The single-piece end cap body can include at least one integrally formed sensor boss and/or fastener boss.

Abstract: An adaptive valve assembly includes a pipe defining a passageway for conducting engine exhaust gases, a pivot shaft supported by the pipe, and a valve body coupled to the pivot shaft. The valve body is moveable between an open position where exhaust gas flow through the passageway is increased and a closed position where exhaust gas flow through the passageway is reduced. A resilient member biases the valve body toward the closed position. A retainer cooperates with the resilient member to define a valve stop for the valve body when in the closed position.

Abstract: A thermal isolation disc for an exhaust silencer includes a first ring configured for attachment to an exhaust pipe defining a center axis, a second ring configured for attachment to a composite outer housing of a silencer, and a gasket sandwiched between the first and second rings.

Abstract: A mixer for a vehicle exhaust system includes an outer shell having an inlet end and an outlet end, an upstream baffle positioned adjacent the inlet end to initiate swirling of engine exhaust gases, and a downstream baffle positioned adjacent the outlet end. An impactor extends between the upstream and downstream baffles, and is spaced radially inwardly from an inner surface of the outer shell by a gap.

Abstract: A vehicle exhaust component includes a first exhaust component, a second exhaust component downstream of the first exhaust component, and a mixer that connects an outlet of the first exhaust component to an inlet to the second exhaust component. The mixer includes a first housing portion with a first connection interface and a second housing portion with a second connection interface. The first housing portion is attached to the outlet of the first exhaust component and the second housing portion is attached to the inlet of the second exhaust component. The first and second connection interfaces are connectable to each other in one of a plurality of different connection orientations such that the first and second exhaust components can be positioned at any of a plurality of different mounting orientations relative to each other.

Abstract: A fuel fired burner defines an axially extending flow path. An airless fuel nozzle sprays fuel droplets within the fuel fired burner in a direction generally along the axially extending flow path. An exhaust gas inlet directs exhaust gases from a vehicle exhaust system toward the airless nozzle in a direction that is transverse to the axially extending flow path. The exhaust gas mixes with the fuel droplets resulting in an exhaust gas/fuel mixture.

Abstract: A hybrid valve assembly for an exhaust system includes an exhaust tube having a bore defining an exhaust flow path. A vane is mounted within the bore and is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. A valve actuator has an ON position where movement of the vane is actively controlled by the valve actuator and an OFF position where movement of the vane is passively controlled by exhaust gas flow.

Abstract: An emission abatement assembly includes a fuel-fired burner having a combustion chamber and a particulate filter positioned downstream of the fuel-fired burner. A mixing baffle is positioned between the fuel-fired burner and the particulate filter.

Abstract: A vehicle exhaust system includes a mixer and a doser that sprays a reducing agent into the mixer to be thoroughly mixed with engine exhaust gases prior to introduction of the mixture into a downstream exhaust component. The doser is mounted in a tangential orientation relative to a point defined at an intersection of a doser axis with a theoretical cylinder that surrounds a center axis of the mixer and is defined by a variable radius.

Abstract: A diffuser plate for a vehicle exhaust system comprises a body having a primary opening and a plurality of secondary openings circumferentially spaced apart from each other about the primary opening. In one example, the diffuser plate is positioned between an exhaust manifold and a catalytic converter. Exhaust gas from the exhaust manifold flows through the primary and secondary openings in the diffuser plate to provide a thorough mixed flow that is evenly distributed across an inlet to a catalyst substrate, and also enable an oxygen sensor to accurately measure engine cylinder exhaust gas chemistry.

Abstract: A heat extraction component for an exhaust component is rigidly connected to a cooling tube. The cooling tube is inserted through a hole in the heat extraction component and is brazed or plastically deformed to provide the rigid connection interface.

Abstract: A vehicle exhaust gas treatment apparatus includes a DPF with SCR coating. An inlet piping fluidly communicates with the DPF and is positioned generally parallel to the DPF. An outlet pipe fluidly communicates with the DPF and is positioned generally parallel to the DPF. The apparatus is arranged such that exhaust gas flows through the inlet pipe in a first direction from a first inlet pipe end to a second inlet pipe end. The exhaust gas flows through the DPF in a second direction, generally parallel to and opposite to the first direction. The gas flows through the outlet pipe generally in the first direction from a first outlet pipe end to a second outlet pipe end.

Abstract: A passive valve assembly for an exhaust component includes a vane that is positioned within an exhaust gas flow path. The vane is pivoted from a closed position to an open position in response to exhaust gas flow overcoming a biasing force. A stop is positioned within the exhaust component and cooperates with the vane to define a closed position for the vane.

Abstract: A diffuser for a vehicle exhaust system includes a body defined by a tubular portion comprising an outer peripheral wall extending about a central axis and at least one surface that extends at an angle relative to the central axis. A tailpipe connection interface is formed at one end of the tubular portion. In one example, the surface extends at an oblique angle relative to the central axis. In another example, a first plurality of holes is formed within the outer peripheral wall and a second plurality of holes is formed within the surface.

Abstract: A mixer for a vehicle exhaust system includes an outer shell having an inlet end and an outlet end, an upstream baffle positioned adjacent the inlet end to initiate swirling of engine exhaust gases, and a downstream baffle positioned adjacent the outlet end. An impactor extends between the upstream and downstream baffles, and is spaced radially inwardly from an inner surface of the outer shell by a gap.

Abstract: A catalyst is positioned downstream of a thermal enhancer, such as a fuel-fired burner for example. A doser injects hydrocarbons into the thermal enhancer to maintain exhaust gas temperatures such that the catalyst is in an active condition and to raise exhaust gas temperatures to a level such that a diesel particulate filter can be regenerated.

Abstract: An exhaust component assembly includes a first pipe that defines a center axis and has a first end, and a second pipe that has a second end inserted into the first end of the first pipe such that an outer surface of the second end is in contact with an inner surface of the first end. At least one axial weld connects the first and second ends together.

Abstract: A diffuser plate for a vehicle exhaust system comprises a body having a primary opening and a plurality of secondary openings circumferentially spaced apart from each other about the primary opening. In one example, the diffuser plate is positioned between an exhaust manifold and a catalytic converter. Exhaust gas from the exhaust manifold flows through the primary and secondary openings in the diffuser plate to provide a thorough mixed flow that is evenly distributed across an inlet to a catalyst substrate, and also enable an oxygen sensor to accurately measure engine cylinder exhaust gas chemistry.

Abstract: An exhaust system includes first and second exhaust components with an inter-pipe that fluidly connects an outlet of the first exhaust component to an inlet of the second exhaust component. A passive valve is mounted within the inter-pipe. The second exhaust component defines an internal cavity that is at least partially packed with a high frequency absorption material and cooperates with the passive valve to effectively attenuate low and high frequency noise.