Conference article

Modular Design of Hydromechanical Transmissions for Mobile Working Machines

Karl Pettersson
Division of Fluid and Mechatronic Systems, Department of Management and Engineering, Linköping University, Sweden

Petter Krus
Division of Fluid and Mechatronic Systems, Department of Management and Engineering, Linköping University, Sweden

Download articlehttp://dx.doi.org/10.3384/ecp1392a12

Published in: 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden

Linköping Electronic Conference Proceedings 92:12, p. 113-119

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Published: 2013-09-09

ISBN: 978-91-7519-572-8

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

This paper demonstrates an optimisation-based method to design modular gearboxes scalable for a range of applications. The design is adapted to the typical operating behaviours of the reference vehicles and considers the manufacturing costs of the gearboxes. Hydromechanical continuously variable transmissions (CVTs) are today strong candidates to replace drive line transmissions based on fuel-thirsty torque converters in many mobile working machines. The advantages include wide range of torque/speed ratios; high energy efficiency throughout the speed range and decoupling of the engine speed and the vehicle speed. Advanced multiple mode CVTs; however; are difficult to evaluate early in the product development process due to the complex architectures and the great variety of possible concepts. There is consequently an increased need for methods to design; compare and evaluate the transmission concepts. To decrease the development and manufacturing costs; there is also a need for scalable transmission concepts that can be used in several applications of different classes. The results show the proficiency of the methodology compared to a manual design process and that the energy efficiency of the transmissions are heavy coupled to the designs

Keywords

Hydromechanical transmissions; Power-split; Design optimisation

References

[1] Thomas Anderl; Jürgen Winkelhake; and Marcus Scherer. Power-split Transmissions For Construction Machinery. In 8th International Fluid Power Confer- ence; pages 189–201; Dresden; Germany; 2012.

[2] D Mikeska and M Ivantysynova. Virtual Prototyping of Power Split Drives. In Workshop on Power Trans- mission and Motion Control; pages 95–111; Bath; UK; 2002.

[3] P Casoli; A Vacca; G L Berta; S Meleti; and M Vescovini. A Numerical Model for the Simulation of Diesel / CVT Power Split Transmission. In 8th International Conference on Engines for Automobiles; Capri; Naples; Italy; 2007.

[4] Torsten Kohmäscher. Modellbildung; Analyse und Auslegung Hydrostatischer Antriebsstrangkonzepte. PhD thesis; RWTH Aachen; Aachen; Germany; 2009.

[5] Alexander Krauss and Monika Ivantysynova. Power Split Transmissions Versus Hydrostatic Multiple Motor Concepts - A Comparative Analysis. SAE Transactions; 113(2); 2004.

[6] Blake Carl and Monika Ivantysynova. Comparison of Operational Characteristics in Power Split Continuously Variable Transmission. In Commercial Vehicle Engineering Congress and Exhibition; Chicago; Illinois; USA; 2006.

[7] S. Schembri Volpe; G. Carbone; M. Napolitano; and E. Sedoni. Design Optimization of Input and Output Coupled Power Split Infinitely Variable Transmissions. Journal of Mechanical Design; 131(11):111002; 2009.

[8] Alarico Macor and Antonio Rossetti. Optimization of Hydro-mechanical Power Split Transmissions. Mechanism and Machine Theory; 46(12):1901–1919; 2011.

[9] Antonio Rossetti and Alarico Macor. Multi-objective optimization of hydro-mechanical power split transmissions. Mechanism and Machine Theory; 2:112–128; April 2013.

[10] Karl Pettersson and Petter Krus. Design Optimization of Complex Hydromechanical Transmissions. ASME Journal of Mechanical Design; 2013. Accepted for publication.

[11] Alberto Jose and Michel Tollenaere. Modular and Platform Methods for Product Family Design : Literature Analysis. Journal of Intelligent Manufacturing; 16(3):371–390; 2005.

[12] K Steindorff. Methods for benchmarking the efficiency of mobile working machines and heavy duty vehicles. In 6th International Fluid Power Conference; pages 197–207; Dresden; Germany; 2008.

[13] Bobbie Frank; Lennart Skogh; and Mats Alaküla. On Wheel Loader Fuel Efficiency Difference Due To Operator Behaviour Distribution. In 2nd International
Commercial Vehicle Technology Symposium; CVT2012; Kaiserslauten; Germany; 2012.

[14] Reno Filla. Quantifying Operability of Working Machines. PhD thesis; Linköping University; Linköping; Sweden; 2011.

[15] Karl Pettersson and Petter Krus. Optimisation and Concept Sensitivity of Continuously Variable Hydromechanical Transmissions. In 8th International Conference on Fluid Power Transmission and Control; ICFP13; Hangzhou; China; 2013.

[16] Bosch Rexroth AG. Produktkatalog Mobilhydraulik. http://www.boschrexroth.com/mobile-hydraulics-catalog/; 2013.

[17] Petter Krus and Johan Andersson. Optimizing Optimization for Design Optimization. In ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference; Chicago; Illinois; USA; 2003.

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