Energy Saving Performance of Agricultural Tractor Equipped with Mechanic-Electronic-Hydraulic Powertrain System

Zhu, Zhen; Yang, Yue; Wang, Dongqing; Cai, Yingfeng; Lai, Longhui

doi:10.3390/agriculture12030436

Cited by 20 publications

(10 citation statements)

References 37 publications

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“…According to the design tractive force index to calculate the power [22][23][24], we can find the rated motor speed n e under the same working condition per experience. We can calculate the rated torque as:…”

Section: P T = Nmentioning

confidence: 99%

Energy Management of Sowing Unit for Extended-Range Electric Tractor Based on Improved CD-CS Fuzzy Rules

Wang

Xing

et al. 2023

Agriculture

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In order to ensure the continuity and endurance mileage requirements during sowing operations, it is necessary to establish accurate modeling for the working condition of the electric tractor sowing unit by adopting a reasonable energy management strategy and realizing accurate energy prediction. The existing electric tractor sowing unit battery energy management strategy is not optimal since it is mostly based on extensive rules. In this paper, according to the requirements of the sowing conditions, a precise model of electric energy consumption in the sowing cycle was established and an energy management strategy of sowing unit of extended-range electric tractor with power CD-CS was proposed. Fuzzy control rules of the dynamic SOC correction factor were established in the battery maintenance stage, and the NSGA-II algorithm was used to optimize the fuzzy control rules to optimize the battery charging and discharging efficiency. A hardware-in-the-loop simulation test platform was built, and the proposed CD-CS strategy was compared with the fuzzy improvement strategy. The simulation results show that the proposed fuzzy improvement strategy extended the battery life of the power consumption stage by 2131.9 s, which is a significant improvement. The field practical results showed that the SOC decreased by 7.21% and the simulation by 4.94% in terms of power consumption in a cycle. The power consumption variance was within a reasonable range, which further verifies the feasibility of the strategy.

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Section: P T = Nmentioning

confidence: 99%

Energy Management of Sowing Unit for Extended-Range Electric Tractor Based on Improved CD-CS Fuzzy Rules

Wang

Xing

et al. 2023

Agriculture

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“…Working parts, such as the threshing and cleaning device, conveying trough, header, grain tank, and grain unloading drum, are installed above the frame, as shown in Figure 1. Hydrostatic, mechanical, and hydro-mechanical transmission are the most common transmission modes for rice harvesters [17][18][19]. The operation of the mechanical transmission is complex, and for harvesters with a wide range of power variations, more gears are required to meet the requirements of the corresponding operations [20].…”

Section: Overall Structure and Working Principlementioning

confidence: 99%

The Design and Test of the Chassis of a Triangular Crawler-Type Ratooning Rice Harvester

et al. 2022

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Due to the high rolling rate of a regular crawler paddy harvester and the absence of mature first season harvester products of ratooning rice, combined with the planting mode and harvest requirements of ratooning rice, a triangular crawler ratooning rice harvester is specifically designed. The structure and steering principle of the triangular crawler chassis are described. The hydraulic system is simulated and analyzed by AMESim2020 (Guangzhou, China) to verify the rationality of its design; RecurDynV9R4 (Guangzhou, China) is used to simulate and analyze the field straight/turning situation of differential steering chassis and rear-axle steering chassis. The results show that the rear axle steering chassis has a smaller turning radius and lower rolling loss rate and the change of track tension is more stable during steering. The field test is conducted to verify the reliability of the simulation results. The field test shows that the rolling loss rate of the rear axle steering chassis is reduced by 27.9% compared with the differential steering chassis. The machine’s operating speed is 2.8 km/h, the minimum turning radius is 780 mm, and the straight rolling rate is 26.8%. The operating performance is stable, and the operational process is smooth. Compared with the existing conventional harvester, the linear rolling rate of the first harvest of ratooning rice is reduced by 26.1%, and the test results are consistent with the RecurDyn simulation results. The results are reliable, providing a reference for the theoretical research of the chassis of the later ratoon rice harvester.

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“…Finally, these transmissions have also been designed as part of a hydraulic or electric hybrid system [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Hydromechanical Transmission IC2OC: Component Sizing and Optimization

Andretta,

Rossetti,

Macor

2024

Fluids

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The IC2OC transmission is a continuous transmission whose layout can change from simple IC to simple OC configuration and vice versa. It was proposed to cover a wider range of vehicle speeds without adding gears. Its sizing can lead to higher efficiencies than those of the IC and OC layouts. Therefore, this work deals with the sizing methodologies of this transmission. Two methodologies are proposed and discussed: the first uses the functional and constitutive equations of the transmission; the second is based on a mathematical programming problem. Both methodologies start from the choice of the full mechanical point speeds. The comparison between the two methods is carried out on the transmission of a commercially available 230 kW reach stacker. The comparison shows that the functional method, leaner and faster, can provide results very close to those obtained with the heavy and time-consuming optimization, provided that the values of the two full mechanical point speeds are the optimal ones for the two basic transmissions taken individually.

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Energy Saving Performance of Agricultural Tractor Equipped with Mechanic-Electronic-Hydraulic Powertrain System

Cited by 20 publications

References 37 publications

Energy Management of Sowing Unit for Extended-Range Electric Tractor Based on Improved CD-CS Fuzzy Rules

Energy Management of Sowing Unit for Extended-Range Electric Tractor Based on Improved CD-CS Fuzzy Rules

The Design and Test of the Chassis of a Triangular Crawler-Type Ratooning Rice Harvester

Hydromechanical Transmission IC2OC: Component Sizing and Optimization

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