Patent ID: 8484948

Claim:
A fixed auger assembly for use in an exhaust line of an internal combustion engine where an additive is added to the exhaust stream, the fixed auger assembly comprising: first and second end sections, each end section having a first open end and a second open end wherein each second open end is adapted to join to an exhaust line, and a cylindrical portion with an inside surface, the first and second end sections joined to each other at the first open ends to form a casing, and first and second auger blades, wherein the first auger blade is secured to the inside surface of the first end section and the second auger blade is secured to the inside surface of the second end section in facing relationship to each other to form a double helical airflow path through the auger blades wherein the two auger blades will cause turbulent airflow to facilitate mixing the additive to the exhaust stream within the assembly when installed in an exhaust line.