Patent ID: 9238991
Filing Date: 2016-01-19
CPC Classification: F01N,Y02T

Claim Text:
1. A swirl can plenum mixer for mixing injected fluid with exhaust gas exhausted from an internal combustion engine comprising: a canister having an inlet and an outlet; an inner exhaust gas plenum; a bulkhead separating the inner exhaust gas plenum into an upstream exhaust gas collector and a downstream diffuser chamber; a primary flow port having a first area opening through the bulkhead; a tangential flow director disposed about, and in fluid communication with, the primary flow port on the downstream side of the bulkhead to collect the exhaust gas passing through the primary flow port; a fluid injector port configured to receive a fluid injector for dispensing a fluid into the exhaust gas; a tangential flow director nozzle radially off-set relative to the primary flow port, the tangential flow director nozzle having an outlet including a second area that is less than the first area configured to dispense exhaust gas and fluid into the downstream diffuser plenum in a tangential flow trajectory, wherein mixing and vaporization of the exhaust gas and fluid is accomplished through ejection of the exhaust gas and fluid mixture from the tangential flow director nozzle and subsequent expansion, deceleration and residence time of the mixture in the downstream diffuser chamber prior to exiting the swirl can plenum mixer canister through an outlet.