This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Analyzing Factors Affecting Gross Indicated Efficiency When Inlet Temperature Is Changed
Technical Paper
2018-01-1780
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Observations from engine experiments indicates that the gross indicated efficiency (GIE) increases when the inlet temperature (Tinlet) is lowered. The change in Tinlet affects several important factors, such as the heat release profile (affecting heat and exhaust losses), working fluid properties, combustion efficiency and heat transfer losses. These factors all individually contributes to the resulting change in GIE. However, due to their strong dependency to temperature it is not possible to quantify the contribution from each of these parameters individually. Therefore, a simulation model in GT-power has been created and calibrated to the performed engine experiments. With simulations the temperature dependency can be separated and it becomes possible to evaluate the contribution to GIE from each factor individually. The simulation results indicate that the specific heats of the working medium are the largest contributor. Heat transfer and combustion efficiency are also important factors but are not as significant as the effect from specific heats.
Recommended Content
| Technical Paper | Combustion Model for Rapid Prototyping |
| Technical Paper | Advances Toward the Goal of a Genuinely Conjugate Engine Heat Transfer Analysis |
Authors
Citation
Lam, N., Tunestal, P., and Andersson, A., "Analyzing Factors Affecting Gross Indicated Efficiency When Inlet Temperature Is Changed," SAE Technical Paper 2018-01-1780, 2018, https://doi.org/10.4271/2018-01-1780.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Unnamed Dataset 5 | ||
| Unnamed Dataset 6 |
Also In
References
- Wang , S. , van der Waart , K. , Somers , B. , and de Goey , P. Experimental Study on the Potential of Higher Octane Number Fuels for Low Load Partially Premixed Combustion SAE Technical Paper 2017-01-0750 2017 10.4271/2017-01-0750
- Li , C. , Yin , L. , Shamun , S. , Tuner , M. et al. Transition from HCCI to PPC: The Sensitivity of Combustion Phasing to the Intake Temperature and the Injection Timing with and without EGR SAE Technical Paper 2016-01-0767 2016 10.4271/2016-01-0767
- Caton , J.A. On The Importance of Specific Heats as Regards Efficiency Increases for Highly Dilute IC Engines Energy Conversion and Management 79 146 160 2014 10.1016/j.enconman.2013.12.020
- Hasegawa , N. , Moriyoshi , Y. , Kuboyama , T. , and Iwasaki , M. 2017
- Caton , J.A. A Comparison of Lean Operation and Exhaust Gas Recirculation: Thermodynamic Reasons for the Increases of Efficiency SAE Technical Paper 2013-01-0266 2013 10.4271/2013-01-0266
- Lam , N. , Tuner , M. , Tunestal , P. , Andersson , A. et al. Double Compression Expansion Engine Concepts: A Path to High Efficiency SAE Int. J. Engines 8 4 1562 1578 2015 10.4271/2015-01-1260
- Lam , N. , Andersson , A. , and Tunestal , P. Double Compression Expansion Engine concepts: Efficiency Analysis Over a Load Range SAE Technical Paper 2018-01-0886 2018 10.4271/2018-01-0886
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill 510 0-07-100499-8
- Gamma Technologies
- McBride , B.J. , Martin , S.G. , and Reno , A. 1993
- Lemmon , E.W. , Huber , M.L. , and McLinden , M.O. NIST Standard ReferenceDatabase 23: Reference Fluid Thermodynamic and Transport Properties - REFPROP. 9.0 2010 Gaithersburg.doi.citeulike-article-id:11896451