CPC F01N 3/206 (2013.01) [F01N 3/2066 (2013.01); F01N 13/141 (2013.01); F01N 13/1838 (2013.01); F02B 37/00 (2013.01); F02B 39/00 (2013.01); F01N 2340/06 (2013.01); F01N 2610/14 (2013.01); F01N 2610/1453 (2013.01)] | 20 Claims |
1. An exhaust additive dosing system for an exhaust system for an internal combustion engine, the exhaust additive dosing system comprising:
a turbocharger comprising a turbine, wherein the turbine comprises:
a diffusor;
a turbine housing comprising an exhaust gas outlet volume, and the diffusor is arranged in the exhaust gas outlet volume, wherein a housing orifice and a diffusor orifice are arranged through each of the turbine housing and diffusor respectively, and wherein the housing orifice and diffusor orifice are mutually aligned to provide an opening into the exhaust gas outlet volume; and
a bushing arranged within the housing orifice extending towards the diffusor orifice and ending at a first end in association with the diffusor orifice, and wherein the first end of the bushing has an internal diameter that is greater than or equal to a diameter of the diffusor orifice; and
an exhaust additive metering device comprising:
a dosing pipe arranged to supply exhaust additive to the exhaust gas outlet volume of the turbocharger, wherein the dosing pipe comprises a surface arranged to sealably interact with a surface of the bushing.
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