TY - JOUR
T1 - Lean gasoline engine reductant chemistry during Lean NOx Trap regeneration
AU - Parks, James E.
AU - Prikhodko, Vitaly
AU - Partridge, William
AU - Choi, Jae Soon
AU - Norman, Kevin
AU - Huff, Shean
AU - Chambon, Paul
PY - 2010
Y1 - 2010
N2 - Lean NOx Trap (LNT) catalysts can effectively reduce NOx from lean engine exhaust. Significant research for LNTs in diesel engine applications has been performed and has led to commercialization of the technology. For lean gasoline engine applications, advanced direct injection engines have led to a renewed interest in the potential for lean gasoline vehicles and, thereby, a renewed demand for lean NOx control. To understand the gasoline-based reductant chemistry during regeneration, a BMW lean gasoline vehicle has been studied on a chassis dynamometer. Exhaust samples were collected and analyzed for key reductant species such as H 2, CO, NH 3, and hydrocarbons during transient drive cycles. The relation of the reductant species to LNT performance will be discussed. Furthermore, the challenges of NOx storage in the lean gasoline application are reviewed.
AB - Lean NOx Trap (LNT) catalysts can effectively reduce NOx from lean engine exhaust. Significant research for LNTs in diesel engine applications has been performed and has led to commercialization of the technology. For lean gasoline engine applications, advanced direct injection engines have led to a renewed interest in the potential for lean gasoline vehicles and, thereby, a renewed demand for lean NOx control. To understand the gasoline-based reductant chemistry during regeneration, a BMW lean gasoline vehicle has been studied on a chassis dynamometer. Exhaust samples were collected and analyzed for key reductant species such as H 2, CO, NH 3, and hydrocarbons during transient drive cycles. The relation of the reductant species to LNT performance will be discussed. Furthermore, the challenges of NOx storage in the lean gasoline application are reviewed.
UR - http://www.scopus.com/inward/record.url?scp=85072366309&partnerID=8YFLogxK
U2 - 10.4271/2010-01-2267
DO - 10.4271/2010-01-2267
M3 - Article
AN - SCOPUS:85072366309
SN - 0148-7191
SP - 956
EP - 962
JO - SAE Technical Papers
JF - SAE Technical Papers
ER -