American Journal of Vehicle Design
ISSN (Print): ISSN Pending ISSN (Online): ISSN Pending Website: http://www.sciepub.com/journal/ajvd Editor-in-chief: Dr. SRINIVASA VENKATESHAPPA CHIKKOL
Open Access
Journal Browser
Go
American Journal of Vehicle Design. 2014, 2(1), 43-52
DOI: 10.12691/ajvd-2-1-6
Open AccessArticle

Experimental Investigation and Theoretical Model Approach on Transmission Efficiency of the Vehicle Continuously Variable Transmission

Eid S. Mohamed1, and Saeed A. Albatlan2

1Automotive and Tractors Engineering, Faculty of Engineering, Helwan University, Mataria, Cairo, Egypt

2Automotive Engineering , Higher Technological institute, 10th Tenth of Ramadan city, 6th of October Branch, Cairo, Egypt

Pub. Date: December 22, 2014

Cite this paper:
Eid S. Mohamed and Saeed A. Albatlan. Experimental Investigation and Theoretical Model Approach on Transmission Efficiency of the Vehicle Continuously Variable Transmission. American Journal of Vehicle Design. 2014; 2(1):43-52. doi: 10.12691/ajvd-2-1-6

Abstract

Applying a Continuously Variable Transmission (CVT) in an automotive driveline has several advantages. A CVT can operate at a wider range of transmission ratios, therefore the engine can be operated more efficiently than with a stepped transmission. The present research focuses on developing influence of loading conditions on the slip behavior and torque transmitting ability of the CVT. The aim of this work is to model of CVT investigates the range of clamping forces needed to initiate the transmission and to successfully meet the oil pressure requirements, this model has been applied on MATLAB program. An analytical approach is used the calculate possible transmission efficiency and traction coefficient of the bush belt CVT. The experimental setup and the instrumentation are present in detail; the measurement results are presented allowing for a more detailed description of the functional properties of the V-belt type variator, especially those related to reapply value of oil pressure by separate artificial hydraulic circuit and reduction ratio CVT. All the results of the practical and the theoretical investigation are presented and discussed to conclude the better operating conditions of the CVT system.

Keywords:
metal-push belt modeling analysis of CVT torque transmission of CVT slip characteristics hydraulic unit of CVT clamping force of CVT

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

Figures

Figure of 22

References:

[1]  Lingyuan Kong, Robert and G. Parker “Steady mechanics of layered, multi-band belt drive used in continuously variable transmissions (CVT)”science direct Mechanism and Machine Theory 43 (2008) 171-185.
 
[2]  Shinya k., Toru fujii, and shigera K. “Study on a Metal pushing V-belt Type CVT: Band Tension and Load Distribution in Steel rings” ElSEVIER, March 1999, JSAE 20 (1999).
 
[3]  G. Carbone,L. Mangialardi, and G. Mantriota (2002) “Influence of Clearance Between Plates in Metal Pushing V-Belt Dynamics” ASM, Journal of Mechanical Design, 2002, Vol. 124.
 
[4]  A. Shafie, and M. H. Ali “Development of an Efficient CVT using Electromechanically System” World Academy of Science, Engineering and Technology 56, 2009, Vol. 3 2009-08-20.
 
[5]  Arnijima, S., Fujii, T., Matsuoka, H., and Ikeda, E., 1992, ‘‘Study on Axial Force and its Distribution of a New CVT Belt for Car,’’ Int. J. Vehicle Desine, 13(2), pp. 168-181.
 
[6]  Keunsoo J, Heera L, Talcheol Kim Jaeshin Y. and Heebock C. (2000) “Dynamic Characteristics of CVT Electro-Hydraulic Control Valves Including Shift Dynamics” Seoul 2000 FISITA World Automotive Congress, F2000A132 June 12-15, 2000, Seoul, Korea.
 
[7]  Mohan Gangadurl, N. Harikrishnan and b. sreekumar (2005)” Development of an Analytical Design Concept of Mechanical Controlled continuously Variable Transmission” SAE Publication, 2005-26-069.
 
[8]  B. Bonsen, T. Klaassen, and K. de Meerakker (2006)” Modeling Slip- and Creep-mode Shift Speed Characteristics of a Push-belt Type Continuously Variable Transmission” 04CVT-3.
 
[9]  A. Mark and L. Robert. (2003) “A Hybrid Transmission for SAE Mini Baja Vehicles”. SAE Publication 2003-32-0045./20034345.
 
[10]  Michil P., B. Vroement, Bart S., Frans V. and Maarten S. (2006)“Control of a hydraulically actuated continuously variable transmission” Vehicle System Dynamics Vol. 44, No. 5, May 2006, 387-406.
 
[11]  Shimizu H., Kobayashi D., Kawashima J., and Kato Y., “Development of 3-D Simulation for Analyzing the Dynamic Behavior of a Metal Pushing V-Belt for CVTs”, SAE Paper, 2000-01-0828, SAE special publication (SP-1522), transmission and driveline synposium 2000, pp. 31-36.
 
[12]  M. Kurosawa, M. Kobayashi and M. Tominaga “Development of a High Torque Capacity Belt Derive CVT with a Torque Converter” ElSEVIER, July 1998, JSAE 20(1999)281-287.
 
[13]  Bert Pennings, Mark van D., Arjen B., Erik van G. and Marlène L. “Van Doorne CVT Fluid Test: A Test Method on Belt-Pulley Level to Select Fluids for Push Belt CVT. Applications” 2003 SAE International P.N 2003-01-3253.
 
[14]  Christopher Ryan Willis “A Kinematic Analysis and Design of a Continuously Variable Transmission” Master of Science in Mechanical Engineering, 19 January 2006.
 
[15]  Nilabh Srivastava (2006)” Modeling and Simulation of Friction Limited Continuously Transmission” Ph.D of Mechanical Engineering, the Graduate School of Clemson University.
 
[16]  Eid S. Mohamed (2013) “Design and performance analysis of the hybrid powertrain strategies for split hybrid vehicles with CVT” Int. J. Electric and Hybrid Vehicles, Vol. 5, No. 3, PP. 195-214.
 
[17]  Mangialardi, L., and Mantriota, G., (1992) “Continuously Variable Transmission with Torque-Sensing Regulators in Waterpumping Windmills,” Renewable Energy, 7(2), pp. 807-823, 1992.