This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Study of Lean NOx Technology for Diesel Emission Control
Technical Paper
2002-01-0956
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The aim of this paper is to investigate the potential of Lean NOx technology for diesel emission control. In this work, the focus is on the precious metal (low temperature) catalyst. Engelhard optimized the catalyst for cells per square inch (cpsi) and Platinum loading. Effect of various parameters, including, reductant type, catalyst volume, space velocity range and injector locations were investigated both analytically and experimentally at Cummins in search for the optimum system design. Both steady state and transient tests were conducted in this work. The precious metal catalysts have a narrow temperature window, however, with the use of proper reductant and an efficient control strategy (to minimize fuel penalty) cycle conversion efficiencies as high as 40% may be obtained for FTP-75. The analysis tool developed to aid the system design is capable of predicting effects of catalyst temperature, NOx concentration, O2 concentration, space velocity etc. on NOx conversion efficiency.
Recommended Content
| Technical Paper | Plasma-Enhanced Catalytic Reduction of NOx in Simulated Lean Exhaust |
| Technical Paper | Application of V2O5 Catalysts to Diesel Nox Emission Control |
| Journal Article | Semi-empirical Analysis of Cold Start Emissions |
Authors
Topic
Citation
Mital*, R., Huang, S., Stroia, B., Yu, R. et al., "A Study of Lean NOx Technology for Diesel Emission Control," SAE Technical Paper 2002-01-0956, 2002, https://doi.org/10.4271/2002-01-0956.Also In
Diesel Exhaust Emissions Control 2002: SCR, HC De-NOx, and Measurement
Number: SP-1674; Published: 2002-03-04
Number: SP-1674; Published: 2002-03-04
References
- Heimrich M. J. “Demonstration of Lean NOx Catalytic Converter Technology on a Heavy-Duty Diesel Engine” SAE 970755 1997
- Kawanami M. et al. “Catalytic NOx Reduction for On-Highway Diesels” Truck Engineering, SAE 950154 1995
- Kawanami M. et al. “Advanced Catalyst Studies of Diesel NOx Reduction for Heavy-Duty Diesel Trucks” SAE 961129 1996
- Parvulescu V. I. et al. “Catalytic removal of NO” Catalysis Today 46 1998 233 316
- Nikolopoulos A. A. et al. “Selective catalytic reduction of NO by propene in excess oxygen on Pt-and Rh-supported alumina catalysts” Catalysis Today 54 1999 439 450
- Litorell, M. et al. “Development of test methods for Lean-NOx catalyst evaluation” SAE 952489 1995
- Wilber R. A. Boehman A. L. “Numerical Modeling of the reduction of nitric oxide by ethylene over Cu-ZSM-5 under lean conditions” Catalysis Today 50 1999 125 132