Experimental Study on the Shift Control Characteristics of CVT using Embedded System

Han, Kyu Young; Ryu, Wansik; Jang, In-Gyu; Jeon, Jae-Wook; Kim, Hyunsoo; Hwang, Sung Ho

doi:10.1109/sice.2006.314925

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…In automotive industry, hydraulic actuation system is normally implemented on automatic transmission or CVT system. It was reported that the controller focusing on controlling the variable ratio by using hydraulic actuation (Wang et al, 2011;Cholis et al, 2015;Jinchun and Changzhou, 2008;Han et al, 2006). Due to the drawbacks of hydraulic system such as leakage and vaporisation of hydraulic fluid, it is difficult to accurately control the system (Abd Rahman, 2013;Aparow et al, 2014;Ahmad et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Modelling and validation of a novel continuously variable transmission system using slider crank mechanism

Rahman

Hudha

Kadir

et al. 2018

IJESMS

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Vehicle transmission system transfers torque and speed from the power source to drive wheels. Continuously variable transmission (CVT) system offers smooth ratio transition where it improves acceleration performance and reduces fuel consumption. Currently, most of the CVT system is actuated by the internal hydraulic circuit where compressibility of oil introduces non-linearity to the system causing difficulty in controlling CVT response. Therefore, a new free-hydraulic CVT system is developed to overcome the shortcomings in existing CVT. The proposed CVT system is designed based on belt-driven type which consists of two sets of variable pulley. Each set of variable pulleys is actuated by an electric motor using slider crank mechanism. The mathematical modelling of CVT mechanism is developed by using Lagrange formulation. The results from this study show that the simulation model of CVT mechanism can produce good performance behaviour in following desired radius position of the real CVT mechanism.

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