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

Ahn, Sunghyun; Choi, Ji Soo; Kim, Su-Chul; Lee, Jinwoong; Choi, Changhyun; Kim, Hyunsoo

doi:10.1177/1687814015593870

Cited by 23 publications

(20 citation statements)

References 20 publications

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“…Thus, vehicles were controlled in such a way that the vehicle would be driven on the engine optimal operating line (OOL), where the engine’s thermal efficiency was high. Based on this principle, Ahn et al 55 proposed an integrated engine–HMT OOL control algorithm for tractors. Compared with the engine OOL, the engine–HMT OOL control algorithm included not only the engine’s thermal efficiency, but also took the tractor condition into account, as shown in Figure 8.…”

Section: Key Technologies Status and Trendsmentioning

confidence: 99%

Hydro-mechanical power split transmissions: Progress evolution and future trends

Cao

Cheng

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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The hydro-mechanical power split transmission is an important form of hydraulic hybrid transmission, combining the stepless speed characteristics of hydraulic transmission and the high efficiency of mechanical transmission. Recently, the hydro-mechanical power split transmission, with its relatively large potential for energy recovery and improving the environment, and its low cost, has attracted many scholars from all over the world. Because there are many types of hydro-mechanical power split transmission, the different forms are complex, and researchers across the world are relatively dispersed, it has experienced a long and arduous development process. Therefore, it is important to summarize the types, developments, and achievements of this transmission. From the recent literature at home and abroad, this paper summarizes developments, key techniques and trends, analyses problems and difficulties in design and application, discusses the methods for solving these problems, and provides references for the development and application of hydro-mechanical power split transmission.

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Section: Key Technologies Status and Trendsmentioning

confidence: 99%

Hydro-mechanical power split transmissions: Progress evolution and future trends

Cao

Cheng

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…-increase in the GMT efficiency [6][7][8][9][10][11]; -suggesting a hypothesis regarding the effective acceleration and deceleration of mobile machines (in particular, tractors) [12][13][14][15].…”

Section: Research Of Existing Solutions Of the Problemmentioning

confidence: 99%

Influence of change of hydraulic machine control parameter during braking of the tractor with the continuously variable transmission

Самородов

Kozhushko

Pelipenko

2017

TAPR

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“…The speed control of HMCVT has been extensively studied. 15,16 For example, Ahn et al 17 developed a speed control algorithm for the combined regulation of engine and transmission that reduces the fuel consumption of the entire vehicle by 7.5%. Pan et al 18 divided the shift process of HMCVT into four stages on the basis of physical parameters and shift time to study the shift strategy of HMCVT; this division effectively improves shift quality.…”

Section: Introductionmentioning

confidence: 99%

Integrated control strategy of tractor hydromechanical continuously variable transmission

Xia

Zong

Tang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Given the transmission efficiency fluctuation and response lag problem of hydromechanical continuous variable transmission combined with the complex and variable working environment of a tractor, an integrated control strategy of engine throttle compensation–hydromechanical continuous variable transmission speed regulation is adopted for dual-flow transmission control. On the basis of the estimation of working resistance, a fuzzy algorithm is used to design the throttle compensation law. Considering the maximum driving power of a tractor as the target of variable speed control, an hydromechanical continuous variable transmission efficiency model is established, and the control law of an hydromechanical continuous variable transmission displacement ratio with the maximum driving power of the tractor under any working condition is determined. On the basis of the wavelet neural network proportional–integral–derivative algorithm, the control law of the hydromechanical continuous variable transmission speed regulation is designed, and the parameters of proportional–integral–derivative control are corrected in real time during the control process. Based on MATLAB/Simulink modelling and simulation and the real vehicle verification test, results showed that the influence of hydromechanical continuous variable transmission efficiency fluctuation on the driving power of the entire vehicle, the response lag of the pump-controlled motor system, and the effect of the leakage on the variable speed control and the fluctuation of the working resistance are solved by studying the hydromechanical continuous variable transmission variable speed transmission control strategy. This strategy improves the stability of the tractor speed and ensured the quality of the work, thereby improving the ability of the tractor to adapt to complex working environments.

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

Cited by 23 publications

References 20 publications

Hydro-mechanical power split transmissions: Progress evolution and future trends

Hydro-mechanical power split transmissions: Progress evolution and future trends

Influence of change of hydraulic machine control parameter during braking of the tractor with the continuously variable transmission

Integrated control strategy of tractor hydromechanical continuously variable transmission

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