Energy Recovery and Reuse Management for Fuel-electric-hydraulic Hybrid Powertrain of a Construction Vehicle

Wang, Zhong; Jiao, Xiaohong; Pu, Zesong; Han, Lu

doi:10.1016/j.ifacol.2018.10.080

Cited by 13 publications

(7 citation statements)

References 6 publications

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“…5,6 There are two types of hybrids: electric hybrid 7–9 and hydraulic hybrid. 10–14 Major CM manufacturers have developed hybrid prototypes, such as Hitachi ZH210LC-5 hybrid excavator, 15 Komatsu PC200-8 hybrid excavator, 16 Volvo L220F hybrid wheel loader, 17 John Deere 644K hybrid wheel loader 18 and Caterpillar 988K XE wheel loader. 19 Although the hybrid powertrains can reduce energy consumption and emission, the improvement is limited (10%–30%) since the engine is still used in the powertrain.…”

Section: Introductionmentioning

confidence: 99%

Energy efficiency improvement of battery powered wheel loader with an electric-hydrostatic hybrid powertrain

Zhang

Wang

Cheng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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An electric-hydrostatic hybrid powertrain is proposed for the wheel loader propulsion system. The powertrain is constituted from an electric hydrostatic powertrain by adding a hydraulic accumulator as the second power source. It not only reduces energy consumption through regenerative braking, but also improves the power performance of the machine. A thermostat control strategy is developed for electric hydrostatic hybrid wheel loader and a speed-displacement compound control is developed for the electric hydrostatic wheel loader. The energy flow, losses analysis, and energy efficiency in the two powertrains are studied. The energy consumption reduction of the electric hydrostatic hybrid powertrain over the electric hydrostatic powertrain is identified in the wheel loader loading cycle. Results show the hydraulic accumulator in the hybrid powertrain increases the hydrostatic transmission efficiency and overall system efficiency. The energy efficiency in the electric hydrostatic powertrain is 45.64% and 51.66% in the electric hydrostatic hybrid powertrain. The total battery energy consumption is 14.20 kWh in the EH wheel loader and 12.48 kWh in the EH-hybrid wheel loader (50 cycles). The total energy consumption saving by using hybrid powertrain is 12.11%.

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Section: Introductionmentioning

confidence: 99%

Energy efficiency improvement of battery powered wheel loader with an electric-hydrostatic hybrid powertrain

Zhang

Wang

Cheng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…Hence, a hybrid hydrostatic transmission system with accumulators is proposed to be superlative for high-speed energy recovery, an inherent characteristic of the braking operation. 10 The diesel electrichydraulic hybrid system and the kinetic energy recuperation using hydrostatic transmission have been analysed through simulation by Wan et al 11 The engine operation is optimized by sharing the load between the electric generator driving the electric motor and charging the battery bank. The work done by Ijas and Ma¨kinen 12 blethers about the optimized control of the displacement of pump, motor and prime-mover speed through a simulation model.…”

Section: Introductionmentioning

confidence: 99%

Energy-efficient control of hydrostatic transmission of a front-end loader machine using machine learning algorithm and its sensitivity analysis

Bhola

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper highlights development of 2-DOF and 3-DOF energy management controllers using a Machine Learning (ML) algorithm for closed-circuit hydrostatic transmission of Front-End Loader (FEL) machine. Objective of energy management controller, is to keep prime-mover, pump and hydro-motor in its efficient zone irrespective of variation of load-speed at drive end. Based on duty cycles of the transmission and sensitivity analysis of drive components, GPR algorithm shows better prediction (within 3%) of optimized commands of hydro-motor and pump displacements and their operating speeds, which results in its efficient operation. Validated model of hydraulic transmission components is integrated with verified model of IC engine to investigate saving in fuel consumption through designed controllers. Comparative study between 2-DOF and 3-DOF controlled transmission systems infers that fuel consumption for engine in 3-DOF controlled system decreases up to 34% of that of 2-DOF with a 20%–30% relative increase in overall drive efficiency.

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“…31 For construction machinery vehicles, a logical control strategy of energy management has been designed in accordance with road conditions and vehicle driving information. 32 To realize a reasonable distribution of engine power between mechanical and hydraulic paths, the current study proposes a nonlinear control scheme based on MPC. 33 However, the influence of the hydraulic system state, such as lubrication oil temperature and pressure, on HHMAS is not considered in this research.…”

Section: Introductionmentioning

confidence: 99%

Model predictive control based on time-varying efficiency for hydraulic hub-motor driving vehicle

Song

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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A model predictive feedback control strategy based on time-varying efficiency is investigated and applied to a hydraulic hub-motor auxiliary system (HHMAS) in this paper. Adding HHMAS to a traditional heavy commercial vehicle can improve fuel economy and traction performance on roads with low adhesion coefficients. However, the hydraulic drive system experiences serious disturbance imposed by time-varying parameters and external conditions. Model predictive feedback control based on time-varying efficiency offers a solution for HHMAS to cope with the disadvantage of the hydraulic drive system and improve the environmental adaptability of the vehicle controller. In this study, the control law of hydraulic variable pump (HVP) target displacement is established based on temperature compensation in consideration of the influence of multiple factors on pump target displacement. For coordinated power distribution of HHMAS, the minimum wheel speed difference and the reduction in system impact are regarded as optimal control targets in adjusting the engine torque and HVP displacement and designing the model predictive controller. Simulation results show that the proposed model predictive control method can reduce the speed difference between front and rear wheels by up to 64% and can achieve the wheel speed following effect faster than the traditional proportional-integral-derivative algorithm. Given that the control parameters do not need to be calibrated in the proposed method, the calibration time is saved, and the actual development process of the hydraulic hub-motor driving vehicle is remarkably improved.

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Energy Recovery and Reuse Management for Fuel-electric-hydraulic Hybrid Powertrain of a Construction Vehicle

Cited by 13 publications

References 6 publications

Energy efficiency improvement of battery powered wheel loader with an electric-hydrostatic hybrid powertrain

Energy efficiency improvement of battery powered wheel loader with an electric-hydrostatic hybrid powertrain

Energy-efficient control of hydrostatic transmission of a front-end loader machine using machine learning algorithm and its sensitivity analysis

Model predictive control based on time-varying efficiency for hydraulic hub-motor driving vehicle

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