APPARATUS, SYSTEM, AND METHOD FOR USING A FRACTION OF ENGINE EXHAUST TO DELIVER A DOSANT

摘要

An apparatus, system, and method are disclosed for delivering a dosant with engine exhaust. In one embodiment, the apparatus (300) includes a flow-rate regulator (320) disposed downstream from an engine exhaust manifold (304) that operates to control a fraction of exhaust (314) from the engine exhaust manifold (304). The apparatus (300) also includes a doser (332) disposed downstream of the flow-rate regulator (320) that provisions a supply of dosant (334) to the path (316) of the controlled fraction of exhaust (314), which atomizes, vaporizes, disperses, mixes with, and/or delivers the dosant (334).