Development of an Exhaust System Complying with Tier 4 PM Regulations through Study of PM Formation Mechanisms in the Exhaust System
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20265346
- Paper/Info type
- Proceedings (Spring)
No.80-26
- Pages
- 1-7(Total 7 p)
- Date of publication
- May 2026
- Publisher
- JSAE
- Language
- English
- Event
- 2026 JSAE Annual Congress (Spring)
Detailed Information
| Author(J) | 1) Sungmu Choi, 2) Hyung Jun Kim, 3) Won Soon Park |
|---|---|
| Author(E) | 1) Sungmu Choi, 2) Hyung Jun Kim, 3) Won Soon Park |
| Affiliation(J) | 1) Hyundai Motor, 2) Hyundai Motor, 3) Hyundai Motor |
| Affiliation(E) | 1) Hyundai Motor, 2) Hyundai Motor, 3) Hyundai Motor |
| Abstract(E) | The U.S. Tier 4 regulation imposes a more stringent particulate mass (PM) limit of 0.5 mg/mile, with enforcement scheduled to commence in 2027. The experimental results revealed considerable variability in PM measurements obtained via filter paper, with occasional exceedances of the Tier 4 PM threshold. This phenomenon is hypothesized to result from the interaction between soluble exhaust gases, produced from the catalyst, and condensate water within the exhaust system, leading to PM formation. As exhaust temperatures rise, the evaporation of condensate water is believed to release the formed PM into the exhaust stream. The following strategies can be proposed to comply with Tier 4 particulate matter (PM) regulations: 1) implementation of high-efficiency GPF for PM reduction, 2) Utilization of additional catalyst to mitigate soluble exhaust gases, 3) elimination of semi-volatile compounds deposited in the exhaust system and measurement apparatus that may be converted to PM. |
