Diesel Exhaust Aftertreatment System Packaging and Flow Optimization on a Heavy-Duty Diesel Engine Powered Vehicle

Wetzel, Philip; McCarthy, James E.; Kulkarni, Milind S.; Mohanta, Lokanath; Griffin, Gregory A.

doi:10.4271/2010-01-1944

Cited by 9 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combined with the 3D isotropy of open cellular structures, this would allow for custom shaping providing additional degrees of freedom, for example, in duct design of aftertreatment catalytic devices. 44 In conclusion, the developed correlations enable to implement structured supports based on 3D-printed POCS in innovative catalytic reactors.…”

Section: Discussionmentioning

confidence: 93%

“…Moreover, it is also worth recognizing that these structures enable radial mixing, overcoming the widely acknowledged problem of flow segregation in monoliths. Combined with the 3D isotropy of open cellular structures, this would allow for custom shaping providing additional degrees of freedom, for example, in duct design of aftertreatment catalytic devices …”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical and Experimental Investigation of Pressure Drop in Periodic Open Cellular Structures for Intensification of Catalytic Processes

et al. 2022

View full text Add to dashboard Cite

Periodic Open Cellular Structures are envisioned as potential enhanced catalyst substrates for heat and mass transferlimited processes. To enable their rational design, in this study, we propose a combined numerical and experimental approach to assess the pressure drop in the tetrakaidekahedral and diamond lattices since generalized correlations are not present in the literature. Deviations are observed between the model predictions available in the literature, which are possibly due to the different methods of investigation, that is, numerical on ideal geometries and experimental on reproductions. To reconcile the two approaches and prevent discrepancies, careful attention is paid here to the quality of 3D-printed replicas for experimental investigation to obtain results representative of ideal lattices. Computational Fluid Dynamics simulations and experiments are then employed together to cross-validate the results and then to perform a parametric analysis of the effect of the morphological properties on the pressure drop. The effect of the cell size and the porosity are discussed, enabling the derivation of engineering correlations for the prediction of the pressure drop across the lattices within the range of 1 < Re ds < 300. Finally, the performances of lattice materials are compared with those of conventional structured supports by evaluating the trade-off between the fluid−solid mass transfer rate and the pressure drop, which is crucial for several catalytic processes. Results show that the diamond lattice outperforms other cellular materials and can outperform ceramic honeycomb monoliths at low Reynolds numbers.

show abstract

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Numerical and Experimental Investigation of Pressure Drop in Periodic Open Cellular Structures for Intensification of Catalytic Processes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…It was demonstrated that insulation has a strong relationship with heat transfer and affects the related temperature [15]. Philip et al used the simulation method for aftertreatment packaging design [16]. Wurzenberger and Johann et al established models for simulating a comprehensive framework on different wall layers to analyze exhaust gas temperature under different operating conditions with the heat transport models [17,18].…”

Section: Introductionmentioning

confidence: 99%

Research on Aftertreatment Inlet_Outlet Insulation for A Nonroad Middle Range Diesel Engine

2020

View full text Add to dashboard Cite

Diesel exhaust aftertreatment systems are required for meeting China StageIV emission regulations. This paper addresses an aftertreatment system designed to meet the China StageIV emission standards for nonroad vehicle markets. It presents a comprehensive experimental research work on aftertreatment skin temperature and the radiated impact on its neighboring parts in a nonroad vehicle powered by a middle range diesel engine under aftertreatment inlet/outlet with insulation and without insulation with multiple experimental conditions, as well as validating the emission results with these two different aftertreatment configurations. According to the experimental results, it can be observed that the aftertreatment inlet/outlet with insulation and without insulation using a Diesel Oxidant Catalyst (DOC) + Diesel Particle Filter (DPF) + Selective Catalytic Reduction (SCR) scheme could both meet China StageIV emission regulations and the whole vehicle arrangement. The connection pipe is generally short between the aftertreatment and the engine turbo charger on nonroad application vehicles, which results in the exhaust gas temperature of the internal aftertreatment at each point being similar, with variation within ±2% for the aftertreatment inlet/outlet with insulation compared to the aftertreatment inlet/outlet without insulation. The aftertreatment skin temperature differences under these two configurations occur on the inlet module and outlet module, and the skin temperatures of other aftertreatment modules are little impacted. These experimental results also validate the radiation model. All aftertreatment skin temperatures are measured with different experimental conditions. In future, if considering integrating other parts like sensors on the surface of the aftertreatment, the configuration with insulation is recommended. As per the experimental results, the maximum inlet skin temperature can lower nearly 50% with insulation and the maximum outlet temperature could lower about 28% compared to the configuration without inlet/outlet insulation. If taking cost into consideration, the configuration without insulation is suggested. This research also introduces alternative solutions for different concerns for real applications. The methodology provides effective guidance and reference for future aftertreatment insulation considerations for inlet modules and outlet modules on real applications.

show abstract

Integration of Electronic Engine and Comparative Analysis Between Electronic and Mechanical Engine

Chaudhary

Chauhan

2020

Control Applications in Modern Power System

View full text Add to dashboard Cite

Diesel Exhaust Aftertreatment System Packaging and Flow Optimization on a Heavy-Duty Diesel Engine Powered Vehicle

Cited by 9 publications

References 12 publications

Numerical and Experimental Investigation of Pressure Drop in Periodic Open Cellular Structures for Intensification of Catalytic Processes

Numerical and Experimental Investigation of Pressure Drop in Periodic Open Cellular Structures for Intensification of Catalytic Processes

Research on Aftertreatment Inlet_Outlet Insulation for A Nonroad Middle Range Diesel Engine

Integration of Electronic Engine and Comparative Analysis Between Electronic and Mechanical Engine

Contact Info

Product

Resources

About