TY - GEN
T1 - Research on Efficiency Model of Hydro-Mechanical CVT Under All Operating Conditions
AU - Cheng, Xu
AU - Peng, Zengxiong
AU - Jing, Chongbo
AU - Jin, Jiayin
AU - Xiong, Jian
AU - Ma, Wenjie
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.
PY - 2026
Y1 - 2026
N2 - This study aims to address the problems of inaccurate predictions, incomplete losses composition, and the limitation to the single operating condition in current hydro-mechanical continuously variable transmission (HMT) efficiency model research. A comprehensive model is proposed and tested on a self-developed HMT, covering all operating conditions. The model consists of two components: hydraulic and mechanical. The hydraulic model is a semi-empirical approach based on the mechanism of efficiency losses and pump-motor test data, which enables accurate calculations under various conditions. The mechanical model combines a rigid body framework, load dynamics, and transmission loss models to precisely capture transient gear efficiency. This integrated approach facilitates early-stage transmission evaluation, identifies primary loss sources, and assesses efficiency not only in steady-state but also throughout driving cycles.
AB - This study aims to address the problems of inaccurate predictions, incomplete losses composition, and the limitation to the single operating condition in current hydro-mechanical continuously variable transmission (HMT) efficiency model research. A comprehensive model is proposed and tested on a self-developed HMT, covering all operating conditions. The model consists of two components: hydraulic and mechanical. The hydraulic model is a semi-empirical approach based on the mechanism of efficiency losses and pump-motor test data, which enables accurate calculations under various conditions. The mechanical model combines a rigid body framework, load dynamics, and transmission loss models to precisely capture transient gear efficiency. This integrated approach facilitates early-stage transmission evaluation, identifies primary loss sources, and assesses efficiency not only in steady-state but also throughout driving cycles.
KW - efficiency model
KW - hydro-mechanical continuously variable transmission
KW - power loss
UR - https://www.scopus.com/pages/publications/105028358172
U2 - 10.1007/978-981-95-3654-2_71
DO - 10.1007/978-981-95-3654-2_71
M3 - Conference contribution
AN - SCOPUS:105028358172
SN - 9789819536535
T3 - Lecture Notes in Mechanical Engineering
SP - 824
EP - 836
BT - Advances in Mechanical Transmission
A2 - Wang, Shuxin
A2 - Qin, Datong
A2 - Liu, Fei
PB - Springer Science and Business Media Deutschland GmbH
T2 - International Conference on Mechanical Transmission, ICMT 2025
Y2 - 17 April 2025 through 20 April 2025
ER -