This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of Transmission Warming Technologies at Various Ambient Conditions
Technical Paper
2017-01-0157
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
This work details two approaches for evaluating transmission warming technology: experimental dynamometer testing and development of a simplified transmission efficiency model to quantify effects under varied real world ambient and driving conditions. Two vehicles were used for this investigation: a 2013 Ford Taurus and a highly instrumented 2011 Ford Fusion (Taurus and Fusion). The Taurus included a production transmission warming system and was tested over hot and cold ambient temperatures with the transmission warming system enabled and disabled. A robot driver was used to minimize driver variability and increase repeatability. Additionally the instrumented Fusion was tested cold and with the transmission pre-heated prior to completing the test cycles. These data were used to develop a simplified thermally responsive transmission model to estimate effects of transmission warming in real world conditions.
For the Taurus, the fuel consumption variability within one standard deviation was shown to be under 0.5% for eight repeat Urban Dynamometer Driving Cycles (UDDS). These results were valid with the transmission warming system active or passive. Using the transmission warming system under 22°C ambient temperature, fuel consumption reduction was shown to be 1.4%. For the Fusion, pre-warming the transmission reduced fuel consumption 2.5% for an urban drive cycle at -7°C ambient temperature, with 1.5% of the 2.5% gain associated with the transmission, while consumption for the US06 test was shown to be reduced by 7% with 5.5% of the 7% gain associated with the transmission. It was found that engine warming due to conduction between the pre-heated transmission and the engine resulted in the remainder of the benefit. For +22°C ambient tests, the pre-heated transmission was shown to reduce fuel consumption approximately 1% on an urban cycle, while no benefit was seen for the US06 cycle. The simplified modeling results showed gains in efficiency ranging from 0-1.5% depending on the ambient temperature and drive cycle.
Recommended Content
Authors
Citation
Jehlik, F., Iliev, S., Wood, E., and Gonder, J., "Investigation of Transmission Warming Technologies at Various Ambient Conditions," SAE Technical Paper 2017-01-0157, 2017, https://doi.org/10.4271/2017-01-0157.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 |
Also In
References
- The White House, Office of the Press Secretary Obama Administration Finalizes Historic 54.5 MPG Fuel Efficiency Standards http://www.whitehouse.gov/the-press-office/2012/08/28/obama-administration-finalizes-historic-545-mpg-fuel-efficiency-standard
- U.S. Federal Register, Environmental Protection Agency, Department of Transportation, National Highway Traffic Safety Administration 2017 and Later Model Year Light-Duty Vehicle Greenhouse Gas Emissions and Corporate Average Fuel consumption Standards; Final Rule http://www.gpo.gov/fdsys/pkg/FR-2012-10-15/pdf/2012-21972.pdf
- U.S. Department of Energy and U.S. Environmental Protection Agency Fuel consumption Tests: Detailed Test Information http://www.fueleconomy.gov/feg/fe_test_schedules.shtml
- U.S. EPA & NHTSA Joint Technical Support Document Final Rulemaking for 2017-2025 Light-Duty Vehicle Greenhouse Gas Emission Standards and Corporate Average Fuel consumption Standards https://www3.epa.gov/otaq/climate/documents/420r12901.pdf
- Jehlik , F. , Wood , E. , Gonder , J. , and Lopp , S. Simulated Real-World Energy Impacts of a Thermally Sensitive Powertrain Considering Viscous Losses and Enrichment SAE Int. J. Mater. Manf. 8 2 239 250 2015 10.4271/2015-01-0342
- Jehlik , F. Methodology and Analysis of Determining Plug-In Hybrid Engine Thermal State and Resulting Efficiency SAE Technical Paper 2009-01-1308 2009 10.4271/2009-01-1308
- Jehlik F. , and Rask E. , Development of Variable Temperature Brake Specific Fuel Consumption Engine Maps SAE Technical Paper 2010-01-2181 2010 10.4271/2010-01-2181
- Jehlik , F. , Rask , E. , and Duoba , M. Real-World Thermal Effects on Wheel Assembly Efficiency of Conventional and Electric Vehicles SAE Int. J. Passeng. Cars - Mech. Syst. 9 1 25 35 2016 10.4271/2016-01-0236
- Argonne National Laboratory, Transportation Technology R&D Center Advanced Powertrain Research Facility (APRF) http://www.anl.gov/energy-systems/facilities/advanced-powertrain-research-facility
- Transportation Secure Data Center 2016 National Renewable Energy Laboratory www.nrel.gov/tsdc
- National Renewable Energy Laboratory National Solar Radiation Database, Typical Meteorological Year Database 3 Golden, CO http://rredc.nrel.gov/solar/old_data/nsrdb/1991-2005/tmy3/
- Ostrouchov , N. Effect of Cold Weather on Motor Vehicle Emissions and Fuel consumption SAE Technical Paper 780084 1978 http://papers.sae.org/780084/
- Andrews , G. , Harris , J. , and Ounzain , A. SI Engine Warm-Up: Water and Lubricating Oil Temperature Influences SAE Technical Paper 892103 1989 10.4271/892103
- Andrews , G.E. , Harris , J.R. , and Ounzain , A. Experimental Methods for Investigating the Transient Warming and Emissions of an SI Engine during the Warm-Up Period Experimental Methods in Engine Research and Development IMechE 101 108 1988
- Andrews , G. , Ounzain , A. , Li , H. , Bell , M. The Use of a Water/Lube Oil Heat Exchanger and Enhanced Cooling Water Heating to Increase Water and Lube Oil Heating Rates in Passenger Cars for Reduced Fuel Consumption and CO2 Emissions During Cold Start. SAE Technical Paper 2007-01-2067 2007 10.4271/2007-01-2067
- Carlson , R. , Duoba , M. , Bocci , D. , and Lohse-Busch , H. On-Road Evaluation of Advanced Hybrid Electric Vehicles Over a Wide Range of Ambient Temperatures 2007 http://www.afdc.energy.gov/pdfs/impact_battery_phev.pdf
- Carlson , R. , Christenson , M. , and Shinomiya , R. Influence of Sub-Freezing Conditions on Fuel Consumption and Emissions of Two Plug-In Hybrid Electric Vehicles EVS-24, Paper #2760135 2009
- Kunze , K. , Wolff , S. , Lade , I. , and Tonhauser , J. A Systematic Analysis of CO2-Reduction by an Optimized Heat Supply during Vehicle Warm-up SAE Technical Paper 2006-01-1450 2006 10.4271/2006-01-1450
- Myers , R.H. , and Montgomery , D.C. Response Surface Methodology: Process and Product Optimization Using Designed Experiment Wiley-Interscience 1995