Design and Braking Stability Analysis of a Novel Internal Pump-Hydraulic Retarder Axle for Heavy Articulated Vehicle

Gao, Zhiwei; Li, Desheng; Liu, Zongqiang; Ye, Lezhi

doi:10.1007/s12239-022-0112-0

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…A good braking performance can improve brake capability and brake safety of hydrodynamic retarders, and reduce unnecessary costs. For this, the main criteria are designed, consisting of (1) Capability, which refers to the ability to stop quickly and efficiently, (2) Safety, which refers to the probability of avoiding accidents and mitigating the severity of collisions [19], and (3) Economy, which is related to service life and maintenance [20]. The definitions, industry standards, and influencing factors of the sub-criteria are briefly explained in the following:…”

Section: Evaluation Criteriamentioning

confidence: 99%

Comprehensive Evaluation of Hydrodynamic Retarders with Fuzzy Analytic Hierarchy Process and Improved Radar Chart

Wang,

Wei,

Chen

et al. 2023

Machines

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The braking performance of hydrodynamic retarders is critical for the safety and economy of heavy-duty vehicles. In order to effectively improve the braking system to meet the needs of the market, an evaluation method for quantifying the performance of hydrodynamic retarders is imperative. In this paper, ten evaluation criteria are put forward according to relevant national standards and market requirements, then the scores corresponding to these criteria are obtained by performance bench test. A fuzzy modification of the analytic hierarchy process (AHP) method is applied to determine the relative weights of the chosen evaluation criteria, where uncertain and imprecise judgments of decision-makers are translated into fuzzy numbers. Furthermore, the improved radar chart method is used to comprehensively evaluate and rank the braking performance of three types of hydrodynamic retarders as an empirical example. In addition, the weight sensitivity analysis is conducted to examine the robustness of the ranking results. The results show that the proposed method is effective and feasible. It provides a reference for multi-objective optimization control strategies and structure designs of hydrodynamic retarders.

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Section: Evaluation Criteriamentioning

confidence: 99%

Comprehensive Evaluation of Hydrodynamic Retarders with Fuzzy Analytic Hierarchy Process and Improved Radar Chart

Wang,

Wei,

Chen

et al. 2023

Machines

View full text Add to dashboard Cite

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“…A verified nonlinear dynamic model of a tractor-semi-trailer was established, and the vehicle slip response under emergency braking conditions was studied [10]. Aiming at the problems of insufficient braking force, collision, and folding in the braking process of articulated vehicles, a kind of eddy current retarded axle was designed, and a braking dynamic model of an articulated vehicle was established in [11]. Based on the articulated vehicle dynamics model, the influence of the participation of the braking system on the lateral stability control was analyzed when the steering actuator performance decreased [12].…”

Section: Introductionmentioning

confidence: 99%

Research on the Longitudinal and Transverse Coupling Dynamic Behavior and Yaw Stability of an Articulated Electric Bus

Song,

Qi,

et al. 2024

Energies

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The dynamic behaviors of articulated buses during braking and steering processes are exceedingly complex due to the transmission of various forces and torques by the articulated device. The coupling of forces between the front and rear carriages often renders the bus prone to yaw instability under extreme operating conditions. In this paper, according to the characteristics of the structure and parameter matching of an electrically driven articulated bus, a dynamic model of longitudinal and transverse coupling applied on an articulated bus is established, and the influence of the articulated structure on the yaw stability of the drive vehicle is analyzed. Combined with the relationship between the driving motor, the hinge device, and the vehicle motion, a cruise simulation model of the bus is developed, enabling a comparative analysis and verification of vehicle stability under typical road conditions. The results offer a theoretical foundation for the design and control of highly reliable articulated buses.

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Mathematical model of a hydraulic retarder based on Rankine–vortex dynamics

Huang,

2023

Physics of Fluids

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Accurate theoretical models of actuators are crucial for researching autonomous driving in heavy-duty commercial vehicles (HDCVs). A hydraulic retarder is a widely used auxiliary braking device in HDCVs that prevents thermal failure of the main brake resulting from continuous braking. The working chamber and the control system are closely interconnected within the hydraulic retarder, forming a highly nonlinear system. Therefore, most mathematical models for predicting the braking torque of hydraulic retarders have separated the working chamber from the control systems, making it difficult to explain the differences between the hydraulic retarder's predicted and actual performance. This paper establishes a novel mathematical model incorporating the working chamber and control system analysis for a hydraulic retarder based on Rankine vortex dynamics. A functional relationship was obtained between the hydraulic retarder's braking torque and the rotor speed, control pressure, float chamber pressure, oil density, and characteristic parameters of the working chamber. The mathematical model has been verified through computational fluid dynamics (CFD) and experiments. CFD results show the velocity distribution of oil vortex flow in the working chamber, and the variation laws of the fundamental parameters are consistent with the established mathematical model. The average errors between the mathematical model calculated and experimental braking torque are 6.3%, 9.5%, 11.8%, and 4.2% at control pressures of 2.8, 2.2, 1.4, and 0.6 bar, respectively, confirming the mathematical model's effectiveness. The mathematical model holds significant value for the design and development of hydraulic retarders and the control strategies of HDCVs with hydraulic retarders.

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Design and Braking Stability Analysis of a Novel Internal Pump-Hydraulic Retarder Axle for Heavy Articulated Vehicle

Cited by 3 publications

References 21 publications

Comprehensive Evaluation of Hydrodynamic Retarders with Fuzzy Analytic Hierarchy Process and Improved Radar Chart

Comprehensive Evaluation of Hydrodynamic Retarders with Fuzzy Analytic Hierarchy Process and Improved Radar Chart

Research on the Longitudinal and Transverse Coupling Dynamic Behavior and Yaw Stability of an Articulated Electric Bus

Mathematical model of a hydraulic retarder based on Rankine–vortex dynamics

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