Development of an integrated engine-hydro-mechanical transmission control algorithm for a tractor

作者：Ahn Sunghyun; Choi Jingyu; Kim Suchul; Lee Jinwoong; Choi Changhyun; Kim Hyunsoo^*

来源：Advances in Mechanical Engineering, 2015, 7(7): 1687814015593870.

DOI：10.1177/1687814015593870

• Hydro-mechanical transmission
• hydrostatic unit
• optimal operating line
• network analysis

This article presents an integrated engine-hydro-mechanical transmission control algorithm for a tractor considering the engine-hydro-mechanical transmission efficiency. First, the hydro-mechanical transmission efficiency was obtained by network analysis based on the hydrostatic unit efficiency constructed from the test. Using the hydro-mechanical transmission efficiency map and the thermal efficiency of the engine, an engine-hydro-mechanical transmission optimal operating line was obtained, which provides higher total system efficiency. Based on the optimal operating line, an integrated engine-hydro-mechanical transmission control algorithm was proposed, which provides higher total powertrain system efficiency. To evaluate the performance of the proposed control algorithm, an AMESim-MATLAB/Simulink-based co-simulator was developed. From the simulation results for the plow working, it was found that the integrated engine-hydro-mechanical transmission control provides improved fuel economy by 7.5% compared with the existing engine optimal operating line control. The performance of the integrated engine-hydro-mechanical transmission control was also validated using the test bench.

• 出版日期2015-7