Exhaust gas aftertreatment system

An exhaust gas system comprising:

• an engine-turbine exhaust gas conduit configured to receive exhaust gas from an engine;
• a turbocharger comprising a turbine coupled to the engine-turbine exhaust gas conduit;
• an injection housing coupled to the turbine and centered on an injection housing axis;
• a dosing module coupled to the injection housing and comprising an injector configured to dose reductant into the injection housing, the injector centered on an injector axis;
• and
• a bypass system comprising:
• a bypass inlet conduit coupled to the engine-turbine exhaust gas conduit,
• a bypass valve coupled to the bypass inlet conduit, and
• a bypass outlet conduit coupled to the bypass valve, the bypass outlet conduit centered on a bypass outlet conduit axis;
• wherein the injection housing is bisected by an injection housing radial plane that is orthogonal to the injection housing axis;
• wherein the injector is separated from the injection housing radial plane by a first axial distance;
• and
• wherein the bypass outlet conduit is separated from the injection housing radial plane by a second axial distance greater than the first axial distance.

An exhaust gas system comprising:

• an engine-turbine exhaust gas conduit configured to receive exhaust gas from an engine;
• a turbocharger comprising a turbine coupled to the engine-turbine exhaust gas conduit;
• a dosing module comprising an injector configured to dose reductant into the exhaust gas, the injector centered on an injector axis;
• and
• a bypass system comprising:
• a bypass inlet conduit coupled to the engine-turbine exhaust gas conduit,
• a bypass valve coupled to the bypass inlet conduit, and
• a bypass outlet conduit coupled to the bypass valve, the bypass outlet conduit centered on a bypass outlet conduit axis;
• wherein the injector is disposed at a first axial position downstream of the turbine;
• and
• wherein the bypass outlet conduit is also disposed at the first axial position downstream of the turbine.