VARIABLE EXHAUST MIXING DEVICE

摘要

A system and method for variable exhaust mixing is provided. A variable exhaust mixing device including a butterfly valve is positioned in an exhaust stream and the butterfly valve is opened more to decrease mixing and closed more to increase mixing. The increased mixing provided by the variable exhaust mixing device allows the injection of dosed fuel into the exhaust stream at a lower exhaust flow rate.

主权项

1. A variable exhaust mixing system including:
a variable exhaust mixing device positioned in an exhaust stream; wherein said variable exhaust mixing device is controlled to decrease the amount of mixing of said exhaust stream with increasing exhaust flow.