An aftertreatment system (100) connected downstream an internal combustion engine arrangement (102) for receiving combustion gas exhausted from the internal combustion engine arrangement (102) during operation thereof, the aftertreatment system (100) comprising a primary aftertreatment system (104) comprising a first catalytic reduction arrangement (106); a secondary reduction system (108) comprising a second catalytic reduction arrangement (110).

An injector includes an injector body having an upper portion defining a top surface. An injector core is received through the upper portion. The injector core has an interfacing surface that is disposed adjacent and raised with respect to the top surface. A cover member is disposed on the upper portion of the injector body. The cover member has a top wall for receiving at least a portion of the injector core, a side wall extending from at least a portion of the top wall, and a lip that is adapted to be attached to the other of the side wall or the injector body through a snap-fit connection. Upon attachment of the lip to the other of the side wall or the injector body, the top wall of the cover member presses on the interfacing surface of the injector core to restrict an axial movement of the injector core relative to the injector body along the longitudinal axis.

A flowhood assembly 1 comprises an injector 30 which is fixable to a mount 50 in a number of alternative mounted positions defined by rotation of the injector about an injection axis X2 relative to the mount. The injector 30 includes one or more coolant ports 34, 35 which are connected in use to a supply of liquid coolant C. The mount 50 is fixable to a flowhood 10 in an upright, design orientation and in alternative connected positions defined by rotation of the flowhood 10 relative to the mount 50 about a connection axis X1. In a normal use position of the assembly the connection axis X1 of the flowhood is arranged at a predefined angle, optionally 0°, relative to a nominal horizontal plane P1. The injector 30 is not fixable to the mount 50 other than in the alternative mounted positions. In use in the normal use position, and in each of the alternative mounted positions of the injector, the injection axis X2 of the injector is oriented downwardly away from the injector relative to the horizontal plane P1, and at least one of the coolant ports 34, 35 is arranged above the horizontal plane P1 which passes through the injection axis X2 at an outlet end 32 of the nozzle.

A dosing lance assembly for an exhaust component includes: a housing including: a plate having a first aperture, a pipe having a first pipe end coupled to the plate around the first aperture, a second pipe end, and a second aperture, an endcap coupled to the second pipe end, and an elbow coupled to the pipe around the second aperture; an air conduit having a first air conduit end and a second air conduit end coupled to the elbow, the air conduit separated from the pipe at a location between the plate and the endcap; and a delivery conduit extending within the air conduit and coupled to the elbow.

A holding device for an injection valve of an exhaust-gas burner of a motor vehicle includes a receiving section and a cooling-water jacket. The receiving section is shaped such that it can receive a front end of the injection valve. The cooling-water jacket extends around the receiving section and is shaped such that, after the holding device has been mounted on the exhaust-gas burner, the cooling-water jacket, together with a corresponding cooling-water jacket of the exhaust-gas burner, forms a cooling-water chamber of the exhaust-gas burner.

A dosing lance assembly for an exhaust component includes: a housing including: a plate having a first aperture, a pipe having a first pipe end coupled to the plate around the first aperture, a second pipe end, and a second aperture, an endcap coupled to the second pipe end, and an elbow coupled to the pipe around the second aperture; an air conduit having a first air conduit end and a second air conduit end coupled to the elbow, the air conduit separated from the pipe at a location between the plate and the endcap; and a delivery conduit extending within the air conduit and coupled to the elbow.

A dosing lance assembly for an exhaust component includes: a housing comprising: a plate having a first channel, an endcap having a second channel, and a pipe having a first end coupled to the plate and a second end coupled to the endcap, wherein at least a portion of the pipe is airfoil-shaped; and a delivery conduit having a first end coupled to the plate and a second end coupled to the endcap, such that reductant is flowable from the first channel to the second channel.

An exhaust-gas burner for an exhaust-gas system of a motor vehicle includes a combustion chamber, which is surrounded by an outer wall, for a channel section in an exhaust-gas system. A dosing unit is provided for the controlled feed of a fuel into the combustion chamber. An ignition unit is provided for the ignition of a combustible mixture in the combustion chamber. A cooling circuit is provided for the exchange of heat with the dosing unit, and is arranged within the outer wall of the exhaust-gas burner.

A holding device for an injection valve of an exhaust-gas burner of a motor vehicle includes a receiving section and a cooling-water jacket. The receiving section is shaped such that it can receive a front end of the injection valve. The cooling-water jacket extends around the receiving section and is shaped such that, after the holding device has been mounted on the exhaust-gas burner, the cooling-water jacket, together with a corresponding cooling-water jacket of the exhaust-gas burner, forms a cooling-water chamber of the exhaust-gas burner.

A lance injector assembly for an exhaust component is provided. The lance injector assembly includes a lance and a poppet valve. The lance includes a lance housing, a supply passage fluidly coupled to a reductant source and terminating at a nozzle orifice, and a return passage fluidly coupled to the reductant source. The poppet valve is positioned downstream of the nozzle orifice and includes a poppet movable between a closed position and an open position. When operating in a recirculation mode, the poppet is in the closed position to permit a full portion of reductant supplied to the lance from the reductant source to return to the reductant source. When operating in an injection mode, the poppet is in the open position to permit a first portion of reductant to flow from the nozzle orifice and a second portion of reductant to return to the reductant source.