1 option
Testing and Modeling of a Passive SCR System for Hydrogen Engines Gamma Technologies LLC
- Format:
- Book
- Conference/Event
- Author/Creator:
- Zafeiridis, Menelaos, author.
- Conference Name:
- 17th International Conference on Engines and Vehicles (2025-09-14 : Capri, Italy)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2025
- Summary:
- Heavy-duty vehicles powered by hydrogen internal combustion engines (H2-ICEs) present a compelling solution for sustainable transportation. When optimized for ultra-lean operation, H2-ICEs are capable of meeting the most stringent contemporary legislative emission standards. However, achieving optimal drivability necessitates occasionally an enriched operating mode, thereby presenting significant challenges in maintaining ultra-low emissions. In this context, the implementation of advanced exhaust after-treatment technologies becomes essential to ensure near-zero tailpipe emissions with minimal impact on fuel efficiency and drivability. This paper investigates the potential of a passive Selective Catalytic Reduction (SCR) exhaust configuration for a heavy-duty hydrogen (HD H₂) engine, employing testing and modeling of a Lean NOx Trap, utilized as an ammonia (NH3) generator, in conjunction with a downstream Selective Catalytic Reduction system.We underscore the complexities associated with defining inlet boundary conditionsincluding exhaust flow rate, temperature, and compositionduring transient engine operation. To address this challenge, an advanced engine model is used, providing the feed gas conditions for targeted steady-state and transient testing protocols on a synthetic gas bench (SGB). Based on the test results, we isolated the underlying phenomena, calibrating the Lean NOx Trap (LNT) and Selective Catalytic Reduction (SCR) kinetic models with a focus on NOx/NH3 storage, deNOx efficiency, and NH3 generation during LNT regeneration events. Utilizing a fully transient SGB test, the catalysts are subjected to transient conditions resembling real world driving cycles and to validate the fidelity of the catalyst models. The combined engine and aftertreatment model allows a comprehensive evaluation of the passive SCR technology potential for a heavy-duty hydrogen engine
- Notes:
- Vendor supplied data
- Publisher Number:
- 2025-24-0082
- Access Restriction:
- Restricted for use by site license
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.