Exhaust additive dosing system comprising an exhaust additive distribution device and an exhaust additive metering device

An exhaust additive dosing system for a turbocharger turbine of an exhaust system for an internal combustion engine, the exhaust additive dosing system comprising:

• an exhaust additive distribution device;
• and
• an exhaust additive metering device,
• wherein the exhaust additive distribution device comprises a receiving surface and at least one distribution surface, wherein the receiving surface comprises a concave wall configured to receive exhaust additive dosed to the exhaust additive distribution device, wherein the at least one distribution surface is arranged upstream of, in a direction of flow of the exhaust additive, and in fluid communication with the receiving surface, wherein the at least one distribution surface is configured to distribute the exhaust additive in an exhaust stream passing through the turbocharger turbine by a rotary motion of the exhaust additive distribution device,
• wherein the exhaust additive distribution device is fixedly attached upstream of a rotor of the turbocharger turbine, to a shaft or a hub of the turbocharger turbine,
• wherein the exhaust additive metering device comprises:
• a supply channel;
• a metering valve;
• and a dosing pipe arranged downstream of the metering valve in a direction of a flow of reductant when dosing, and
• wherein the exhaust additive metering device is arranged to supply exhaust additive to the receiving surface of the exhaust additive distribution device.

A turbocharger, comprising an exhaust additive distribution device for a turbocharger turbine of an exhaust system for an internal combustion engine, the exhaust additive distribution device comprising:

• a fastening surface;
• a receiving surface;
• and
• at least one distribution surface,
• wherein the fastening surface is configured to fixedly attach the exhaust additive distribution device upstream of a rotor of the turbocharger turbine, to a shaft or a hub of the turbocharger turbine,
• wherein the receiving surface comprises a concave wall configured to receive exhaust additive dosed to the exhaust additive distribution device, and
• wherein the at least one distribution surface is arranged upstream of, in a direction of flow of the exhaust additive, and in fluid communication with the receiving surface, wherein the distribution surface is configured to distribute the exhaust additive in an exhaust stream passing through the turbocharger turbine by a rotary motion of the exhaust additive distribution device.

A vehicle comprising an exhaust additive dosing system for a turbocharger turbine of an exhaust system for an internal combustion engine, the exhaust additive dosing system comprising:

• an exhaust additive distribution device;
• and
• an exhaust additive metering device,
• wherein the exhaust additive distribution device comprises a receiving surface and at least one distribution surface, wherein the receiving surface comprises a concave wall configured to receive exhaust additive dosed to the exhaust additive distribution device, wherein the at least one distribution surface is arranged upstream of, in a direction of flow of the exhaust additive, and in fluid communication with the receiving surface, wherein the at least one distribution surface is configured to distribute the exhaust additive in an exhaust stream passing through the turbocharger turbine by a rotary motion of the exhaust additive distribution device,
• wherein the exhaust additive distribution device is fixedly attached upstream of a rotor of the turbocharger turbine, to a shaft or a hub of the turbocharger turbine,
• wherein the exhaust additive metering device comprises:
• a supply channel;
• a metering valve;
• and a dosing pipe arranged downstream of the metering valve in a direction of a flow of reductant when dosing, and
• wherein the exhaust additive metering device is arranged to supply exhaust additive to the receiving surface of the exhaust additive distribution device.