EXPERIMENTAL STUDY ON THE CHARACTERISTICS OF NANO-PARTICLE EMISSIONS FROM A HEAVY-DUTY DIESEL ENGINE USING A UREA-SCR SYSTEM
Lee, S; Cho, Y; Song, M; Kim, H; Park, J; Baik, D
| HERO ID | 1553594 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | EXPERIMENTAL STUDY ON THE CHARACTERISTICS OF NANO-PARTICLE EMISSIONS FROM A HEAVY-DUTY DIESEL ENGINE USING A UREA-SCR SYSTEM |
| Authors | Lee, S; Cho, Y; Song, M; Kim, H; Park, J; Baik, D |
| Journal | International Journal of Automotive Technology |
| Volume | 13 |
| Issue | 3 |
| Page Numbers | 355-363 |
| Abstract | Particulate matter in diesel engine exhaust, particularly nano-particles, can cause serious human health problems including diseases such as lung cancer. Because diesel nano-particle issues are of global concern, regulations on particulate matter emissions specify that not only the weight of particulate matter emitted but also the concentration of nano-particles must be controlled. This study aimed to determine the effects on nano-particle and PM emissions from a diesel engine when applying a urea-SCR system for NOx reduction. We found that PM weight increases by approximately 90% when urea is injected in ND-13 mode over the emission without urea injection. Additionally, PM weight increases as the NH3/NOx mole ratio is increased at 250 degrees C. In SEM scans of the collected PM, spherical particles were observed during urea injection, with sizes of approximately 200 nm to 1 mu m. This study was designed to determine the conditions under which nano-particles and PM are formed in a urea-SCR system and to relate these conditions to particle size and shape via a quantitative analysis in ND-13 mode. |
| Doi | 10.1007/s12239-012-0033-4 |
| Wosid | WOS:000302037700002 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000302037700002 |
| Is Public | Yes |
| Keyword | PM (Particulate Matter); NH3 slip; SCR (Selective Catalytic Reduction); SV (Space Velocity); AOC (Ammonia Oxidation Catalyst); CPC (Condensation Particle Counter); SEM (Scanning Electron Microscopy) |