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A novel electro-hydraulic compound braking system coordinated control strategy for a four-wheel-drive

The main innovations of this paper are as follows: The electro-hydraulic compound braking system coordinated control strategy for a four-wheel-drive pure electric vehicle driven by dual motors with efficient braking energy recovery has been proposed, which is

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Keyu''s Brand New 2 Door Electric Mini Truck with true 4 Wheel Drive

KEYU is changing the electric mini truck market with its brand new 4 wheel drive electric vehicle. This electric truck has a cool new design and was clearly

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System design and energetic characterization of a four-wheel

Finesso et al. investigated the energy efficiency of a four-wheel-driven parallel hybrid powertrain [8]. Asaei presented the design, simulation, and manufacturing of a through-the-road parallel hybrid electric motorcycle with a

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We have to embrace battery energy storage. It can benefit all

15 · Last summer, battery energy storage prevented blackouts across Texas as heat waves strained the grid — protecting 434,000 homes from losing power. Today, New York is home to just 340 megawatts

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Comparative study of energy management strategies for hybrid proton exchange membrane fuel cell four wheel drive

The four-wheel-drive electric vehicle DC bus voltage for four energy management strategies under the EV moves in all phases is shown in Fig. 5, where (a) is the classical PI strategy,(b) is a Fuzzy-Logic strategy,(c) is a

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Wheel torque distribution optimization of four-wheel independent-drive electric vehicle for energy

Wheel torque distribution optimization of four-wheel independent-drive electric vehicle for energy efficient driving Junnian Wanga*, Shoulin Gaoa, Kai Wanga, Yan Wangb, Qingsong Wangc a State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China

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Longitudinal–Vertical Comprehensive Control for Four-Wheel Drive Pure Electric Vehicle Considering Energy

Longitudinal–Vertical Comprehensive Control for Four-Wheel Drive Pure Electric Vehicle Considering Energy Recovery and Ride Comfort July 2021 Energy 236(8):121417

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Optimal sizing and adaptive energy management of a novel four-wheel-drive hybrid powertrain

As an essential attribute of SUV, four-wheel-drive (4WD) offers flexible torque arrangement and results in safe and powerful driving under off-road conditions. In this paper, we propose a novel compound 4WD hybrid powertrain by adding an extra output shaft to a conventional power-split hybrid electric vehicle.

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Research on Composite Braking Control Strategy of Four-Wheel-Drive Electric Vehicles With Multiple Motors Based on Braking Energy

Received 20 August 2023, accepted 6 September 2023, date of publication 15 September 2023, date of current version 11 October 2023. Digital Object Identifier 10.1109/ACCESS.2023.3316012 Research on Composite Braking Control Strategy of

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Longitudinal–vertical comprehensive control for four-wheel drive pure electric vehicle considering energy

With respect to longitudinal braking, Sun et al. [16] designed a braking force distribution strategy based on the ideal braking force curve for four-wheel drive pure electric vehicles, and the results indicated that the energy recovery efficiency was improved.

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Capacity Optimization of lithium Battery-Flywheel Hybrid Energy

Abstract: In order to enhance the output performance of energy storage and lower the cost of energy storage, this paper focuses on the energy-power hybrid energy storage

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Wheel torque distribution optimization of four-wheel independent-drive electric vehicle for energy

Assuming the torque distribution between the front- and rear-axle of the single side is equal, the side torque distribution coefficient result corresponding to the minimum power loss obtained by offline optimization is shown in Fig. 4.As shown in Fig. 4, the vehicle tends to be single-side drive when the axle torque is in low torque region and

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Analysis and optimization of energy efficiency for an electric vehicle with four independent drive in-wheel

Analysis and optimization of energy efficiency for an electric vehicle with four independent drive in-wheel motors Xinwei Jiang1, Long Chen1,2,XingXu1,2, Yingfeng Cai1,2, Yong Li 1,2 and Wujie

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A Fast and Parametric Torque Distribution Strategy for Four

Abstract: Electric vehicles (EVs) with four individually controlled drivetrains are over-actuated systems, and therefore, the total wheel torque and yaw moment demands can

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Four-wheel drive

A four-wheel drive, also called 4×4 ("four by four") or 4WD, is a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case providing an additional output drive shaft and, in many instances, additional gear ranges .

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Energy management strategy of four-wheel drive SUV electric

To address the problem of a large inrush current in pure electric vehicles under high-power driving and braking conditions, which damages the cycle life of the

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Torque Distribution Strategy of Four-Wheel Independent Drive Electric Vehicle Based on Optimal Energy

Similarly, Leng et al. [5] proposed a torque control method for a Four-Wheel Drive Electric Vehicle based on an allocation algorithm, and the stability of in-wheel motors were enhanced. The torque

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Energy management for four-wheel independent driving vehicle

Abstract. The promising electric vehicle (EV) technology is a direction to tackle the global non-renewable energy problem. However, the efficiency to use the electric energy still needs deliberate

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[PDF] Wheel torque distribution optimization of four-wheel

In order to improve the stability and economy of 4WID-4WIS (four-wheel independent drive—four-wheel independent steering) electric vehicles in trajectory

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(PDF) A review of flywheel energy storage systems:

Thanks to the unique advantages such as long life cycles, high power density and quality, and minimal environmental impact, the flywheel/kinetic energy storage system (FESS) is gaining steam

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Research on energy control strategy of four-wheel drive hybrid

Aiming at the newly developed four-wheel drive hybrid system, with the goal of minimizing fuel consumption, the energy control strategy of the optimal curve of the engine is proposed, and the optimal control law under CLTC working conditions is obtained after global optimization of the dynamic programming algorithm, which is used to improve the rule

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The Impact of Hybrid Energy Storage System on the Battery

The model studied in this paper is a Chin ese-made four-wheel drive battery replace-able electric coupe SUV, and the main parameters are shown in Table 1.

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2025 Mini Countryman SE ALL4 First Drive: EV Is Biggest, Heaviest Mini

The dual-motor, all-wheel drive Countryman S ALL4 packs a 313-hp, 364-lb-ft punch that gets it, in a smooth and silent surge of acceleration, to 60 mph in less than 5.6 seconds, according to Mini.

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Torque-Fill Control and Energy Management for a Four-Wheel-Drive Electric Vehicle Layout With Two-Speed Transmissions

This paper presents a novel four-wheel-drive electric vehicle layout consisting of one on-board electric drivetrain per axle. Each drivetrain includes a simplified clutch-less two-speed transmission system and an open differential to transmit the torque to the wheels. This drivetrain layout allows eight different gear state combinations at the

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An improved speed-dependent battery/ultracapacitor hybrid

Battery/Ultracapacitor (UC) Hybrid Energy Storage Systems (HESS) for Electric Vehicles (EVs) have been frequently proposed in the literature to increase battery

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Best Four-Wheel-Drive Cars of 2024

enhances traction but is not the same as four-wheel drive. Here is the list of the best 4-wheel-drive vehicles of 2024 across the various classifications: 2024 Ram 1500 9.3/10 What is Buzzscore

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How Aircraft Carrier Works US Nuclear Power Ship Nimitz Class

How Aircraft Carrier Works US Nuclear Power Ship Nimitz Class #ship

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Torque allocation of four-wheel drive EVs considering tire slip energy

With the increasing peak torque of the in-wheel motor, the tire slip energy dissipation becomes as considerable as the motor energy loss. The actuation redundancy in four-wheel drive electric vehicles has the innate advantage of reducing the energy dissipation of the tire slip according to different criteria. This study innovatively optimizes

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Energy recovery strategy for regenerative braking system of intelligent four‐wheel independent drive

Compared with traditional vehicles, driverless ones would eliminate drivers'' interferences, and have more freedoms to optimize energy recovery, route tracking and dynamics stability. Specifically, a series regenerative braking system is designed, and then a three-level control architecture is first proposed to coordinate three performances.

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Energies | Free Full-Text | In-Wheel Motor Drive

Recently, there has been significant attention given to the electrification of transportation due to concerns about fossil fuel depletion and environmental pollution. Conventional drive systems typically include

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Analysis and optimization of energy efficiency for an

The independent driving ability of the four-wheel independent drive electric vehicles can be used to improve the energy efficiency of the vehicle. The composition and structure of a prototype

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The best electric cars for families and kids | Drive

There are two variants, the EQB250 front-wheel drive and the EQB350 four-wheel drive. The EQB250 costs $87,734 before on-road costs with a larger driving range of 507km.

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Energy recovery of four-wheel hub motor driven vehicle in

The factors that affect the efficiency of braking energy recovery is a crucial and worthy research problem for the four-wheel hub motor driven (FWHMD) electric vehicle (EV). This paper presents an energy classification statistical method by integrating the direct current (DC) of the power battery and considering the efficiency of the permanent magnet

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Longitudinal–vertical comprehensive control for four-wheel drive pure electric vehicle considering energy

The effective energy of the component refers to the energy flowing out of the component (motor) or the energy stored (battery) or energy consumption (wheel cylinders). The final energy recovery of battery under the CCM is 288.52 kJ, and the final energy recovery of battery of the DL-MSC is 266.33 kJ ( Q = Q b + Q ele_sus, Q

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An Optimal Torque Distribution Control Strategy for Four-Wheel Independent Drive Electric Vehicles Considering Energy

ABSTRACT To further improve the energy economy of a four-wheel independent drive electric vehicle (FWIDEV) in the process of vehicle stability control, in this paper, the in˛uence of different wheel torque distributions on vehicle stability and energy economy during vehicle steering is analyzed in depth.

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Research on Composite Braking Control Strategy of Four-Wheel-Drive Electric Vehicles With Multiple Motors Based on Braking Energy

Four-wheel-drive system with multiple motors has been one of the important development trends of electric vehicles, which has an important impact on the regenerative braking of electric vehicles. Aiming at the configuration characteristics of a composite braking system for the four-wheel-drive electric vehicle with multiple motors, this paper proposed a

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Two-level Steering Stability Control Based on Energy-Saving of a Four In-Wheel Motor Drive

To improve the energy economy of a four independent wheel motor drive electric vehicle (4-IWMDEV), this paper proposes an optimal based energy-saving torque distribution. The suggested algorithm can adapt to different driving conditions while ensuring stability of the vehicle. The controller encompasses a hierarchical structure, a reference model which

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Energy management strategy of four-wheel drive SUV electric

To develop a new type of four-wheel-drive SUV EHH power system, related energy management strategies were studied with the goal of optimizing vehicle energy consumption:. 1. To optimize the instantaneous energy consumption of a vehicle, a real-time controllable EMS based on the optimal instantaneous efficiency is proposed.

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Hybrid Energy Storage System and Energy Distribution Strategy

This paper presents a novel topology of a hybrid energy storage system (HESS) and an improved energy distribution control strategy for four-wheel independent

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