This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Reduction of Parasitic Losses in Front-End-Accessory-Drive Systems - Part 1
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Demanding CO2 and fuel economy regulations are continuing to pressure the automotive industry into considering innovative powertrain and vehicle-level solutions. Powertrain engineers continue to minimize engine internal friction and transmission parasitic losses with the aim of reducing overall vehicle fuel consumption. Strip friction methods are used to determine and isolate components in engines and transmissions with the highest contribution to friction losses. However, there is relatively little focus on friction optimization of Front-End-Accessory-Drive (FEAD) components such as alternators and Air Conditioning (AC) compressors. This paper expands on the work performed by other researchers’ specifically targeting in-depth understanding of system design and operating strategy. Prime focus of the first part of the study is to outline the development of a flexible test stand that allows for highly accurate torque measurements on such components under precisely controlled environmental boundary conditions and device loads. Initial testing results from multiple test units are also presented.
This paper will detail aspects of the test stand design that provide flexibility for adaptation to various test scenarios. The results from measurements for a number of FEAD components will be shown in the context of scatterbands derived from multiple component tests. Key results from direct-drive and belt-driven component tests will be compared to illustrate the influence of the belt layout on mechanical efficiency of the FEAD system.
|Technical Paper||Power Saving with the Use of Variable Displacement Compressors|
|Technical Paper||Inverter-Integrated Electric Compressors for Hybrid Vehicles|
|Technical Paper||Development of Hybrid Compressor|
CitationTatur, M., Govindswamy, K., and Tomazic, D., "Reduction of Parasitic Losses in Front-End-Accessory-Drive Systems - Part 1," SAE Technical Paper 2017-01-0893, 2017, https://doi.org/10.4271/2017-01-0893.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
- Vogelgesang, F., Stief, H., and dos Santos, L., "Investigations on Friction Losses within Front End Accessory Drives," SAE Technical Paper 2010-36-0178, 2010, doi:10.4271/2010-36-0178.
- Akehurst, S., Hawley, J., Pegg, I., and Piddock, M., "Front End Auxiliary Drive (FEAD) Configurations Focusing on CO2 Benefits," SAE Technical Paper 2004-01-0596, 2004, doi:10.4271/2004-01-0596.
- Forth, T., Antchak, J., Fought, M., and Russ, S., "Optimized Engine Accessory Drive Resulting in Vehicle FE Improvement," SAE Int. J. Engines 1(1):1294-1302, 2009, doi:10.4271/2008-01-2761.
- Cepon, G. and Boltezar, M., "An Advanced Numerical Model for Dynamic Simulations of Automotive Belt-Drives," SAE Technical Paper 2010-01-1409, 2010, doi:10.4271/2010-01-1409.
- Mackay, S., "Reduction in Parasitic Losses by Careful Choice of Alternator Drive System," SAE Technical Paper 2012-01-0385, 2012, doi:10.4271/2012-01-0385.
- Woo, S., "Development of Energy Reduction Technology in FEAD -Development of Friction Mearsurement Technology, Layout, and Tensioner System," SAE Technical Paper 2013-01-2639, 2013, doi:10.4271/2013-01-2639.
- Robert Bosch GmbH, 5th Edition Bosch Automotive Electrics and Automotive Electronics, 2007
- Marco Lunanova, "1 Einleitung und Zieldefinition"; "3.4 Einfluss der Nebenaggregate auf den Kraftstoffverbrauch" In Optimierung von Nebenaggregaten, pg. 11-12; pg. 34. Vieweg+ Teubner, 2009
- Bauer Horst, Reinhard Meyer, Generatoren und Starter, 1. Auflage, Stuttgart, Bosch, 2002