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A Study of the Auxiliary Belt Drive System for Actual Fuel Saving
Technical Paper
2017-01-0898
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The engine indicated torque is not delivered entirely to the wheels, because it is lowered by losses, such as the pumping, mechanical friction and front auxiliary power consumption. The front auxiliary belt drive system is a big power consumer-fueling and operating the various accessory devices, such as air conditioning compressor, electric alternator, and power steering pump. The standard fuel economy test does not consider the auxiliary driving torque when it is activated during the actual driving condition and it is considered a five-cycle correction factor only. Therefore, research on improving the front end auxiliary drive (FEAD) system is still relevant in the immediate future, particularly regarding the air conditioning compressor and the electric alternator.
An exertion to minimize the auxiliary loss is much smaller than the sustained effort required to reduce engine friction loss. The purpose of this paper is two-fold: first, to measure a quantitative accounting value of the FEAD system driving torque for evaluating the loss in accessories ; and second, to devise a useful measure for reducing friction of the FEAD system using the assessment standard. In order to determine whether the proposed scheme is worth developing, this study investigated the fundamental features of the FEAD system. Many methods have been devised to minimize the driving torque in the 2.0 L diesel engine FEAD system. During the measurement, the accessory load controller and temperature control chamber were widely used for the actual driving environment. After modifications to the FEAD system, such as V- ribbed belts, layout, idler, tension and auxiliary, driving torque was dramatically reduced. Hence, it can be an important measure to improve vehicle fuel economy in the standard test modes, such as Federal Test Procedure (FTP), New European Driving Cycle (NEDC) and real driving emission (RDE) tests.
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Citation
Lee, J., Oh, S., Joo, K., Yi, S. et al., "A Study of the Auxiliary Belt Drive System for Actual Fuel Saving," SAE Technical Paper 2017-01-0898, 2017, https://doi.org/10.4271/2017-01-0898.Data Sets - Support Documents
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References
- Otremba , Liu K. , El-Mahmoud M. , Neu M. , Oh K. Reduction Of Mechanical Friction Loss In The Belt Driven Starter Generator Systems
- Mackay , S. Reduction in Parasitic Losses by Careful Choice of Alternator Drive System SAE Technical Paper 2012-01-0385 2012 10.4271/2012-01-0385
- Rodriguez , J. , Keribar , R. , and Wang , J. A Comprehensive and Efficient Model of Belt-Drive Systems SAE Technical Paper 2010-01-1058 2010 10.4271/2010-01-1058
- Lee , J. and Cheng , W. Engine Friction Accounting Guide and Development Tool for Passenger Car Diesel Engines SAE Int. J. Engines 6 4 1970 1977 2013 10.4271/2013-01-2651
- Mackay , S. Reduction in Parasitic Losses by Careful Choice of Alternator Drive System SAE Technical Paper 2012-01-0385 2012 10.4271/2012-01-0385
- Tabatabaei , S. , Payganeh , G. , and Childs , T. Mechanical Performance of V-Ribbed Belt Drives (Theoretical Modelling) SAE Technical Paper 2001-01-0367 2001 10.4271/2001-01-0367
- Karunendiran , S. , Clark , M. , and Zu , J. A New Approach for Life Prediction of Serpentine Accessory Belt Drive System Using Actual Measured Data SAE Technical Paper 2009-01-0811 2009 10.4271/2009-01-0811
- 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 10.4271/2013-01-2639
- Ha , K. , Kong , J. , and Kim , W. Development of an Engine Torquemeter for In-vehicle Application and Parametric Study on Fuel Consumption Contribution SAE Technical Paper 2007-01-0964 2007 10.4271/2007-01-0964