Combining Early Intake Valve Closure and Exhaust Throttling to Achieve Rapid Exhaust After-treatment Warm up in Diesel Engine Systems DOI
Hasan Üstün Başaran

Deu Muhendislik Fakultesi Fen ve Muhendislik, Journal Year: 2025, Volume and Issue: 27(80), P. 206 - 215

Published: May 12, 2025

Nowadays, the thermal management of exhaust after-treatment (EAT) units is a paramount concern for diesel automotive vehicles to meet stringent emission regulations. In general, EAT temperatures above 250oC are favorable effective conversion efficiency. At low-loaded operations, it difficult achieve that since temperature remains much below 250oC. Therefore, this numerical work aims elevate at light-loaded engine model through adopting two different engine- base techniques, namely early intake valve closure (EIVC) and throttling (ET). Both individual combined modes EIVC ET examined high in system. enhances over with flow rate, which desirable rapid warm up. However, causes up % 15 fuel penalty, highly impairs its practicality. Unlike ET, thermally efficient can raise Yet, has disadvantage significantly lowered rates, inconsistent fast Simultaneous application EIVC, as EIVC+ET, still keep reduced penalty (down 8.8). It also benefit increased rates compared mode, substantially heightens heat transfer unit (up 101). Thus, sustain accelerated EIVC+ET method seen be improve stay-warm performance (delaying cool off) enables not possible other methods analysis.

Language: Английский

Evolution C3H6 poisoning mechanism study of coke deposition in Cu-SSZ-13 catalytic microchannel reactors DOI
Zonglin Li, Pan Wang, Miaomiao Jin

et al.

Thermal Science and Engineering Progress, Journal Year: 2025, Volume and Issue: unknown, P. 103365 - 103365

Published: Feb. 1, 2025

Language: Английский

Citations

0
Combining Early Intake Valve Closure and Exhaust Throttling to Achieve Rapid Exhaust After-treatment Warm up in Diesel Engine Systems DOI
Hasan Üstün Başaran

Deu Muhendislik Fakultesi Fen ve Muhendislik, Journal Year: 2025, Volume and Issue: 27(80), P. 206 - 215

Published: May 12, 2025

Nowadays, the thermal management of exhaust after-treatment (EAT) units is a paramount concern for diesel automotive vehicles to meet stringent emission regulations. In general, EAT temperatures above 250oC are favorable effective conversion efficiency. At low-loaded operations, it difficult achieve that since temperature remains much below 250oC. Therefore, this numerical work aims elevate at light-loaded engine model through adopting two different engine- base techniques, namely early intake valve closure (EIVC) and throttling (ET). Both individual combined modes EIVC ET examined high in system. enhances over with flow rate, which desirable rapid warm up. However, causes up % 15 fuel penalty, highly impairs its practicality. Unlike ET, thermally efficient can raise Yet, has disadvantage significantly lowered rates, inconsistent fast Simultaneous application EIVC, as EIVC+ET, still keep reduced penalty (down 8.8). It also benefit increased rates compared mode, substantially heightens heat transfer unit (up 101). Thus, sustain accelerated EIVC+ET method seen be improve stay-warm performance (delaying cool off) enables not possible other methods analysis.

Language: Английский

Citations

0