Dual Turbocharger and Synergistic Control Optimization for Low-Speed Marine Diesel Engines: Mitigating Black Smoke and Enhancing Maneuverability

Cheng Meng (), Kaiyuan Chen, Tianyu Chen and Jianfeng Ju
Additional contact information
Cheng Meng: Marine Design & Research Institute of China, Shanghai 200011, China
Kaiyuan Chen: Marine Design & Research Institute of China, Shanghai 200011, China
Tianyu Chen: Marine Design & Research Institute of China, Shanghai 200011, China
Jianfeng Ju: Marine Design & Research Institute of China, Shanghai 200011, China

Energies, 2025, vol. 18, issue 11, 1-19

Abstract: Marine diesel engines face persistent challenges in balancing transient black smoke emissions and maneuverability under low-speed conditions due to inherent limitations of single turbocharger systems, such as high inertia and delayed intake response, compounded by control strategies prioritizing steady-state efficiency. To address this gap, this study proposes a dual -turbocharger dynamic matching framework integrated with a speed–pitch synergistic control strategy—the first mechanical-control co-design solution for transient emission suppression. By establishing a λ-opacity correlation model and a multi-physics ship–engine–propeller simulation platform, we demonstrate that the Type-C dual turbocharger reduces rotational inertia by 80%, shortens intake pressure buildup time to 25.8 s (54.7% faster than single turbochargers), and eliminates high-risk black smoke regions (maintaining λ > 1.5). The optimized system reduces the fuel consumption rate by 12.9 g·(kW·h) −1 under extreme loading conditions and decreases the duration of high-risk zones by 74.4–100%. This study provides theoretical and practical support for resolving the trade-off between transient emissions and maneuverability in marine power systems through synergistic innovations in mechanical design and control strategies.

Keywords: marine diesel engine; dual turbochargers; black smoke; ship-engine-propeller control strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/18/11/2910/pdf (application/pdf)
https://www.mdpi.com/1996-1073/18/11/2910/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:18:y:2025:i:11:p:2910-:d:1670189

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().