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Hydraulic Hybrid Excavator System Development and Optimization Based on Energy Flow Analysis and its Performance Results
Technical Paper
2015-01-2851
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Many off-highway machines, including hydraulic excavators, perform cyclical motion in their everyday activities where there is significant acceleration, deceleration, load lifting and hydraulic implement lowering. During that time in conventional off-highway machinery, most of the potential or kinetic energy is dissipated as heat instead of being captured and reused. When these opportunities are well understood and consequently machine systems are designed and integrated properly, fuel efficiency improvements could reach double digit values. It should be noted that the mentioned machine efficiency improvements will still vary depending on the machine size, its application and the characteristics of machine system(s) being applied.
An approach for excavator energy flow analysis, coupled with rapid machine control design changes directed to minimization of energy losses is discussed. This paper describes technologies that are applied on the 30 ton hydraulic excavator, which help conserve, optimize, capture and reuse machine energy in a variety of machine applications. Virtual product development tools not only helped narrow initial design options, but also greatly reduced time needed to develop machine controls that resulted in excellent machine performance (efficiency, productivity, and controllability). The applied development process illustrates ability to achieve both, good machine performance prediction in the early stage of the development and to shorten machine development time. Machine productivity study results and data obtained from various customer machines confirmed double digit fuel efficiency improvements.
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Citation
Egelja, A., Blum, D., and Patel, K., "Hydraulic Hybrid Excavator System Development and Optimization Based on Energy Flow Analysis and its Performance Results," SAE Technical Paper 2015-01-2851, 2015, https://doi.org/10.4271/2015-01-2851.Also In
References
- Ken Gray CAT® 336E H Hybrid Excavator - Customers, Diversity Drive Innovation 2014 IFPE Key Note speaker March 4 8 2014
- Zhang , Jiao Hydraulic Hybrid System for Swing Energy Recover and Reuse NCFP, Proceedings of the 52st National Conference on Fluid Power 2014
- Zhang , Jiao Pressure Compensated Independent Metering Valve for EH System NCFP 108-14.3, pp367-371, Proceedings of the 51st National Conference on Fluid Power 2008
- Zhang , Jiao et al Control System for Recovering Swing Motor Kinetic Energy US Patent 7908825 March 22 2011
- Caterpillar Inc. 2013 Sustainability Report http://s7d2.scene7.com/is/content/Caterpillar/C10133619 April 8 2015
- Li Perry Y , Van de Ven James D. and Sancken Caleb Open accumulator concept for compact fluid power energy storage IMECE 2007-42580, Proceedings of IMECE 2007, ASME 2007 International Mechanical Engineering Congress and R&D Exposition November 11 15 2007 Seattle, USA
- Lin , T. , Wang , Q. , Hu , B. and Gong , W. 2010 Development of hybrid powered hydraulic construction machinery Automation in Construction 19 11 19
- Hippalgaonkar , R. , Zimmerman , J. , and Ivantysynova , M. Investigation of Power Management Strategies for a Multi-Actuator Hydraulic Hybrid Machine System SAE Technical Paper 2011-01-2273 2011 10.4271/2011-01-2273
- Thompson , B. , Yoon , H. , Kim , J. , and Lee , J. Swing Energy Recuperation Scheme for Hydraulic Excavators SAE Technical Paper 2014-01-2402 2014 10.4271/2014-01-2402
- Wang , F , Zulkefli , M , Sun , Z , Stelson , K. 2013 Investigation on the energy management strategy for hydraulic hybrid wheel loaders ASME 2013 Dynamic Systems and Control Conference