This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Modeling Heavy-Duty Engine Thermal Management Technologies to Meet Future Cold Start Requirements
Technical Paper
2019-01-0731
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The low-NOx standard for heavy-duty trucks proposed by the California Air Resources Board will require rapid warm-up of the aftertreatment system. Several different engine technologies are being considered to meet this need. In this study, a 1-D engine model was first used to evaluate several individual control strategies capable of increasing the exhaust enthalpy and decreasing the engine-out NOX over the initial portion of the cold start FTP cycle. The additional fuel consumption resulting from these strategies was also quantified with the model. Next, several of those strategies were combined to create a hypothetical aftertreatment warm-up mode for the engine. The model was then used to evaluate potential benefits of an air gap manifold (AGM) and two different turbine by-pass architectures. The detailed geometry of the AGM model was taken into account, having been constructed from a real prototype design. An equally detailed manifold model consisting of a single thick layer with the thermal properties of cast iron served as the baseline. The AGM provided ~30°C increase in temperature and a 13% increase in enthalpy over the first 300 seconds of the cold FTP, which is only about 20% of the impact of the warm-up mode, but is achieved with no additional fuel consumption. The turbine by-pass concepts were not as effective as the AGM, primarily because the by-pass flow rate must be limited during the early loaded periods of the FTP in order to meet the torque demand of the test.
Recommended Content
Authors
Citation
Kovacs, D., Rauch, H., Rezaei, R., Huang, Y. et al., "Modeling Heavy-Duty Engine Thermal Management Technologies to Meet Future Cold Start Requirements," SAE Technical Paper 2019-01-0731, 2019, https://doi.org/10.4271/2019-01-0731.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| [Unnamed Dataset 1] | ||
| [Unnamed Dataset 2] | ||
| [Unnamed Dataset 3] |
Also In
References
- California Air Resources Board, “Heavy-Duty Low NOx Program,” https://www.arb.ca.gov/msprog/hdlownox/hdlownox.htm.
- Sharp, C., Webb, C., Neely, G., Carter, M. et al., “Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty on-Highway TC Diesel Engine and an Advanced Technology Emissions System-Thermal Management Strategies,” SAE Int. J. Engines 10(4):1697-1712, 2017, doi:10.4271/2017-01-0954.
- Sharp, C., Webb, C., Yoon, S., Carter, M. et al., “Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty on-Highway TC Diesel Engine-Comparison of Advanced Technology Approaches,” SAE Int. J. Engines 10(4):1722-1735, 2017, doi:10.4271/2017-01-0956.
- Sharp, C., Webb, C., Neely, G., Sarlashkar, J. et al., “Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine and an Advanced Technology Emissions System-NOX Management Strategies,” SAE Int. J. Engines 10(4):1736-1748, 2017, doi:10.4271/2017-01-0958.
- Volvo Penta, “Volvo Penta Reveals New 5 and 13-Liter Engines for Stage V,” Press release, https://www.volvopenta.com/industrialoffroad/en-en/news/2017/nov/volvo-penta-reveals-new-5-and-13-liter-engines-for-stage-v.html, 2017.
- Gehrke, S., Kovács, D., Eilts, P., Rempel, A. et al., “Investigation of VVA-Based Exhaust Management Strategies by Means of a HD Single Cylinder Research Engine and Rapid Prototyping Systems,” SAE Int. J. Commer. Veh. 6(1):47-61, 2013, doi:10.4271/2013-01-0587.
- Theißl, H., Kraxner, T., Seitz, H., and Kislinger, P., “Miller Valve Timing for Future Commercial Diesel Engines,” MTZ Worldwide 76(11):4-11, 2015.
- Hirschmann, S., Malischewski, T., Haubold, U., and Tilch, B., “Variable Valve Trains in Heavy-Duty Engines-Benefit and Design,” in Heavy-Duty, On- and Off-Highway Engines Conference, Neu-Ulm, 2016.
- Weberskirch, D., Hyna, D., Malischweski, S.H., and Dressel, T., “Variable Ventiltriebe in Heavy-Duty-Motoren - ermittelte Potenziale mit Miller-Steuerzeiten,” in 10th MTZ Conference the Charge Cycle in Combustion Engines, 2017.
- Hermann, H.-O., Nielsen, B., Gropp, C., and Lehmann, J., “Mercedes-Benz Medium-Duty Commercial Engines - Part 1: Engine Concept and Exhaust Aftertreatment,” MTZ Worldwide 73:4-11, 2012, doi:https://doi.org/10.1007/s38313-012-0220-8.
- Daimler “Detroit DD5/DD8 Launch Update,” Presentation at in the 2017 Northeast & Midwest Equipment Joint Meeting, Portland, Maine, 2017.
- Rauch, H., Rezaei, R., Weber, M., Kovács, D. et al., “Holistic Development of Future Low NOx Emission Concepts for Heavy-Duty Applications,” SAE Technical Paper 2018-01-1700, 2018, doi:10.4271/2018-01-1700.
- Rezaei, R., Dinkelacker, F., Tilch, B., and Delebinski, T., “Phenomenological Modeling of Combustion and NOx Emissions Using Detailed Tabulated Chemistry in Diesel Engines,” International Journal of Engine Research 17(8):846-856.
- Böckenhoff, E. and Herrmann, H.-O., “Der Ladungswechsel bei der neuen Generation von Daimler Trucks Nutzfahrzeugmotoren,” in 5. MTZ-Fachtagung, Ladungswechsel im Verbrennungsmotor 2012, 2012.
- Rauch, H., Kovács, D., Rezaei, R., Strots, V. et al., “Two-Stage SCR System for Commercial Vehicle Applications,” in 7th International MinNOx Conference, Berlin, Germany, 2018
- Harris, T.M., McPherson, K., Rezaei, R., Kovács, D. et al., “Modeling of Close-Coupled SCR Concepts to Meet Future Cold Start Requirements for Heavy-Duty Engines,” SAE Technical Paper 2019-01-0984, 2019.