Optimization of components and layouts of hydromechanical transmissions

Authors

DOI:

https://doi.org/10.1080/14399776.2017.1296746

Keywords:

Hydromechanical transmission, layout optimisation, input coupled CVT, output coupled CVT

Abstract

In the agricultural and work machine sectors, hydromechanical transmission competes with traditional mechanical transmission. However, the double energy conversion taking place in hydrostatic transmission lowers the efficiency of the entire transmission. Thus, the dimensioning of hydromechanical transmission must not only meet the functional requirements of speed and power to be transmitted, but must also identify the particular combination of layout and the components that leads to the maximum efficiency. In this study, a general answer to this problem will be given. The design is transformed into a mathematical programming problem, whose goal is the optimisation of both the configuration and internal components of the transmission. The structure of the transmissions is described by means of graph theory, and the resolution of the optimisation problem is obtained by means of a ‘direct search’ algorithm based on the swarm method.

Downloads

Download data is not yet available.

Author Biographies

Antonio Rossetti, Construction Technologies Institute, National Research Council, Padova, Italy

Antonio Rossetti received his Ph.D degree in Energetic from the University of Padova, Italy, in 2009, where he hold a Post-doc Researcher position for 3 years. In 2013 he moved to ITC-CNR as Researcher in the Thermo-Fluid Dynamics Branch. His main research fields are the experimental and numerical fluid dynamics..

Alarico Macor, Department of Engineering and Management, University of Padua, Vicenza, Italy

Alarico Macor has an MSc in mechanical engineering and a PhD in energetics from Padua University. He is an associate professor of fluid power systems and teaches in the Doctoral School of Mechatronics. Research activity: Performance and emission testing of biodiesel in boilers and on-road diesel engines. Hydraulic hybrid systems and hydro-mechanical power split transmissions; dynamic simulation of fluid power systems..

Martina Scamperle, Department of Engineering and Management, University of Padua, Vicenza, Italy

Martina Scamperle graduated from the University of Padua in mechanical engineering in 2013. She has been a PhD student since 2016 in mechatronics and product innovation at the Department of Engineering and Management, University of Padua. Current research areas include experimental and theoretical analysis of hydrostatic transmissions, design of complex drivelines and dynamic simulation of fluid power systems.

References

Blake C., Ivantysynova M., and Williams K., 2006.

Comparison of operational characteristics in power

split continuously variable transmissions. In: 2006 SAE

commercial vehicle engineering congress & exhibition. SAE

Technical Paper no. 2006-01-3468. Rosemont, IL.

Bosch-Rexroth, 2009. Data sheet for Axial Piston Variable

Motors RE 91604/07.09.

Casoli P., et al., 2007. A numerical model for the simulation

of Diesel/CVT Power Split transmission. In: ICE2007 8th

international conference on engines for automobiles. SAE

Technical Paper no. 2007-24-0137. Capri, Italy.

Jarchow, F., 1964. Leistungsverzweigte Getriebe (Power split

transmissions). VDI-Z, 106 (6), 196–205.

Kirejczyk J., 1984. Continuously variable hydromechanical

transmission for commercial vehicle by simulation studies.

SAE Technical paper no. 845095, FISTIA congress, Vienna,

Austria.

Krauss A. and Ivantysynova M., 2004. Power split

transmissions versus hydrostatic multiple motor concepts

– A comparative analysis. In: 2004 SAE commercial vehicle

engineering congress & exhibition. SAE Technical Paper no.

-01-2676.

Kress, J.H., 1968. Hydrostatic power splitting transmissions

for wheeled vehicles – classification and theory of operation.

SAE Technical Paper no. 680549. Warrendale, PA: Society

of Automotive Engineers.

Linares, P., Mendez, V., and Catalan, H., 2010. Design

parameters for continuously variable power-split

transmissions using planetaries with 3 active shafts.

Journal of terramechanics, 47, 323–335.

Macor, A. and Rossetti, A., 2011. Optimization of hydromechanical

power split transmissions. Mechanism and

machine theory, 46 (12), 1901–1919.

Macor, A. and Rossetti, A., 2013. Fuel consumption reduction

in urban buses by using power split transmissions. Energy

conversion and management, 71, 159–171.

Macor, A., Rossetti, A., and Scamperle, M., 2016. Prediction

of sound pressure level for a dual-stage hydromechanical

transmission. International journal of fluid power, 17 (1),

–35.

Mikeska D. and Ivantysynova M., 2002. Virtual prototyping

of power split drives. In: Proceedings of bath workshop on

power transmission and motion control, Bath, UK, 95–111.

Nelder, J.A. and Mead, R., 1965. A simplex method for

function minimization. Computer journal, 7, 308–313.

Renius, K.T. and Resch R., 2005. Continuously variable tractor

transmissions. ASAE distinguished lecture series. Tractor

Design no. 29. Louisville, KY.

Rossetti, A. and Macor, A., 2013. Multi-objective optimization

of hydro-mechanical power split transmissions.

Mechanism and machine theory, 62 (4), 112–128.

Fan, S.-K.S., Liang, Y.-C., and Zahara, E., 2014. A genetic

algorithm and a particle swarm optimizer hybridized with

Nelder–Mead simplex search. Computers & industrial

engineering, 50, 401–425.

Sung, D., Hwang, S., and Kim, H., 2005. Design of

hydromechanical transmission using network analysis.

Proceedings of the institution of mechanical engineers, part

D: journal of automobile engineering, 219 (1), 53–63.

Downloads

Published

2017-08-01

How to Cite

Rossetti, A., Macor, A., & Scamperle, M. (2017). Optimization of components and layouts of hydromechanical transmissions. International Journal of Fluid Power, 18(2), 123–134. https://doi.org/10.1080/14399776.2017.1296746

Issue

2017: Vol 18 Iss 2

Section

Original Article