This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Holistic Vehicle Energy Management - Moving Towards CAFE's Target
Technical Paper
2011-01-1014
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
EPA and NHTSA have harmonized Regulations for Greenhouse Gas
(GHG) emissions and Corporate Average Fuel Economy (CAFE) for model
year (MY) 2012-16, published on April 1st, 2010. This requirement
applies to all passenger cars and light trucks. Therefore the
reduction of CO₂ emissions will be a major challenge for the
automotive industry in the coming years to achieve the targets (GHG
& CAFE) of 250 g/mi CO₂ and 35.5 miles per gallon (mpg) for MY
2016. In addition to combustion engine improvements, vehicle energy
management and operating strategies offer a huge potential to
reduce CO₂ emissions through innovative electronic systems.
The paper will show a possible implementation of a holistic
vehicle energy management system including the operating strategy
"Free wheeling." Starting from a top-down approach, we
have developed operating strategies that offer the possibility to
optimize the energy usage of the entire system. Energy recuperation
and advanced Stop/Start system are the main elements of the
operating strategies.
Design of new power net architectures is necessary to tackle the
requirements of the new systems. To achieve the same level of
reliability the vehicle systems and components must be adapted
accordingly to allow engine stop for vehicle speed not equal to
zero. The evaluation of the energy management strategies are based
on a "virtual" average CAFE passenger car. This vehicle
is investigated in simulating the driving cycles FTP-75 and HWFET.
The feasibility of the 35.5 mpg target will be shown.
Recommended Content
Journal Article | Management of Energy Flow in Complex Commercial Vehicle Powertrains |
Technical Paper | Scenario Analysis of Hybrid Class 3-7 Heavy Vehicles |
Technical Paper | Rolling Resistance Effect of Tire Road Contact in Electric Vehicle Systems |
Authors
Topic
Citation
Eymann, T., Williams, K., Benninger, K., Vikas, A. et al., "Holistic Vehicle Energy Management - Moving Towards CAFE's Target," SAE Technical Paper 2011-01-1014, 2011, https://doi.org/10.4271/2011-01-1014.Also In
References
- Voigt, D. Kraftstoffverbrauchsvorteile durch Regelölpumpen MTZ 12 2003 64
- Greiner, J. Vahlensieck, B. Mohr, M. Casals, P. Kraftstoffsparende Antriebssysteme 30. Internationales Wiener Motorensymposium Wien 2009
- Stolz, W. Preis-/leistungsoptimierte E/E-Architektur mittels System Engineering Prinzipien - Der integrierte Fahrzeugcontroller, Elektronik-Systeme im Automobil Euroforum Fachtagung 2010
- Vikas, A. Eymann, Th. Fahrzeugenergiemanagement - Energetisch optimale Betriebsstrategien zur CO2 Reduktion VDI-Berichte 2075 Baden-Baden 2009
- Fischle, H. Neuste Entwicklungen und Anwendungen von Super-Caps als Energie und Leistungsspeicher, Elektrische Energiespeicher VDI-Berichte 2058 Fulda 2009
- Rauchfuss, L. Hindorf, K. Einfluss und Potenzial von Nebenaggregat auf den Kraftstoffverbrauch, Energieeinsparung durch Elektronik im Fahrzeug Baden-Baden Spezial 2008
- Gross, J. Hartmann, S. Merkle, M. Entwicklungstrends und zukünftige Lösungen für Start/Stopp Systeme VDI-Berichte 2075 Baden-Baden 2009
- Robert Bosch GmbH Kraftfahrtechnisches Taschenbuch 25 Vieweg 2003
- Eymann, Th. Vikas, A. Vehicle energy management - Energy related optimal operating strategies for CO2 reduction AMAA congress Berlin 2010
- Mueller, N. Strauss, S. Tumback, S. Goh, G. et al. “Next Generation Engine Start/Stop Systems: “Free-Wheeling”,” SAE Technical Paper 2011-01-0712 2011