This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Powertrain Choices for Emerging Engine Technologies
Technical Paper
2020-01-0440
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The peak efficiency of modern spark ignited engines varies from 36% to 40% depending on the exact technology utilized. Most engines can achieve this peak efficiency for a limited operating region. Multi-speed transmissions allow the engine to operate closer to its most efficient operating regions for more significant portions of operation. In the case of hybrid powertrains, electric machines help in improving engine efficiency by adjusting operating speed and load. Engine shutdown during idle events and low loads is another avenue for improving the overall efficiency.
The choice of the ideal powertrain and component sizes depends on the engine characteristics, drive cycles and vehicle technical requirements. This study examines what type of powertrains will be suitable for more efficient engines that are likely to be available in the near future. Some of the new technologies achieve higher efficiency with a trade off on power or by accepting a more restrictive operating region. An appropriate powertrain choice can still enable such an engines to be a viable option for an automobile.
Using simulation tools, 11 different engine technologies are evaluated in this paper for their fuel saving potential. Vehicle models are created using advanced engine models with 5 powertrain choices for multiple vehicle classes. Sensitivity of fuel consumption to drive cycles is also evaluated. This analysis quantifies the fuel saving potential of each engine and powertrain combination to identify attractive solutions that could lead to affordable and efficient vehicles.
Recommended Content
Authors
Citation
Vijayagopal, R., Nieto Prada, D., and Costanzo, V., "Powertrain Choices for Emerging Engine Technologies," SAE Technical Paper 2020-01-0440, 2020, https://doi.org/10.4271/2020-01-0440.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
- www.autonomie.net
- NHTSA https://www.nhtsa.gov/corporate-average-fuel-economy/light-duty-cafe-midterm-evaluation
- Islam , E. , Kim , N. , Moawad , A. , and Rousseau , A. October 2018
- Sellnau , M. , Foster , M. , Moore , W. , Sinnamon , J. et al. Pathway to 50% Brake Thermal Efficiency Using Gasoline Direct Injection Compression Ignition SAE Int. J. Adv. & Curr. Prac. in Mobility 1 4 1581 1603 2019 https://doi.org/10.4271/2019-01-1154
- Dernotte , J. , Dec , J. , and Ji , C. Efficiency Improvement of Boosted Low-Temperature Gasoline Combustion Engines (LTGC) Using a Double Direct-Injection Strategy SAE Technical Paper 2017-01-0728 2017 https://doi.org/10.4271/2017-01-0728
- https://www.nhtsa.gov/staticfiles/rulemaking/pdf/cafe/140227_ANL_GTStudy_FinalDelivery.pdf
- Kim , N. , Rousseau , A. , and Lohse-Busch , H. Advanced Automatic Transmission Model Validation Using Dynamometer Test Data SAE Technical Paper 2014-01-1778 2014 https://doi.org/10.4271/2014-01-1778
- Kim , N. , Rousseau , A. , and Rask , E. Autonomie Model Validation with Test Data for 2010 Toyota Prius SAE Technical Paper 2012-01-1040 2012 https://doi.org/10.4271/2012-01-1040
- http://www.nhtsa.gov/staticfiles/rulemaking/pdf/cafe/ANL-Autonomie-Sizing-Algorithm-Validation-1509.pdf on 2019/0901
- Moawad , A. , Kim , N. , Shidore , N. , and Rousseau , A. March 2016
- Conlon , B. , Blohm , T. , Harpster , M. , Holmes , A. et al. The Next Generation “Voltec” Extended Range EV Propulsion System SAE Int. J. Alt. Power. 4 2 248 259 2015 https://doi.org/10.4271/2015-01-1152
- Hochgraf , C. and Duoba , M. What if the Prius Wasn't a Hybrid? What if the Corolla Were? An Analysis Based on Vehicle Limited Fuel Consumption and Powertrain and Braking Efficiency SAE Technical Paper 2010-01-0834 2010 https://doi.org/10.4271/2010-01-0834