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The benefit of this system is that it reduces brake wear and tear, as well as the number of spare parts required, lowering maintenance costs. ... While hydraulic and pneumatic energy storage and recovery systems are efficient in some applications, switching to pure mechanical energy storage and recovery systems opens up a new spectrum of ...
This paper presents a comprehensive optimization procedure of a series electric hydraulic hybrid vehicle powertrain and control through the interactive adaptive-weight genetic algorithm method. The optimization simultaneously maximizes the driving range and battery lifespan, while minimizing onboard energy storage system mass.
The invention discloses a kind of automobiles with braking stored-energy function, further include brake switch, hydraulic cylinder, transition leading screw, sliding sleeve, repairing check valve, in line check valve, oil outlet one-way valve, hydraulic motor, first clutch, second clutch, the first switching switch, two position, three-way electromagnetic change valve and overflow valve ...
In hydraulic energy storage devices, when the vehicle brakes, hydraulic oil is pumped into the energy storage device to store hydraulic energy and provide braking torque. The flywheel regenerative braking system stores some of the braking …
As shown in Fig. 5.20, orange indicates the hydraulic braking for the front axle, yellow indicates the hydraulic braking for the rear axle, and green indicates regenerative braking.The difference can be seen in how each strategy divides the braking force based on the size of the braking pedal position. The parallel braking system will evenly divide the braking force required by the …
When braking, the vehicle with the regenerative braking system can convert part of the kinetic energy into chemical energy or mechanical energy storage. The main …
In the 1950s, Swiss company Oerlikon developed the gyrobus, which utilized flywheel as its energy storage method. The effects of gyroscopic motion on the bus soon resulted in it being discontinued. In 1967, the American Motor Car Company (AMC) created an electrical energy regeneration brake for their concept electric car, the AMC Amitron.
The air actuator converts hydraulic energy into linear motion. ... It is also used to decrease the speed or bring the vehicle to rest. Air brake setup is operated by compressed air which applies pressure on the brake drum to halt any automobile. ... In air brake systems, there is a storage tank that retains enough energy to stop the car if the ...
Wang and Wang [25] suggested a modern series hybrid hydraulic excavator based on electro-hydraulic composite energy storage, with the battery and accumulator operating as intermediate energy storage. They increased the battery''s service life. ... Vehicle optimization for regenerative brake energy maximisation. Sustainable vehicle technologies ...
All of these types have their advantages and disadvantages [42]. Here, we investigate a hydraulic recuperation system, possessing a bladder accumulator as energy storage device, as such a hydraulic storage has a relatively high power density and comparatively low maintenance costs.
To understand the diagrams the two contrary effects of adding a hydraulic storage system to the car have to be considered: On the one hand the storage allows to recuperate otherwise wasted energy, on the other hand the resulting higher mass of the vehicle leads to higher rolling friction losses.
Operating the primary energy and the secondary energy source for peak power; Installing an appropriate secondary energy storage device; Capturing braking energy that is normally wasted as heat by capturing its kinetic energy into the secondary energy device; Three-year return on investments yields profitability @ 15% savings; Reduced engine wear
Hydraulic energy recovery systems have been investigated by researchers for a while. Panchal et al. modeled a system consisting of a hydraulic pump, a hydraulic accumulator and a hydraulic motor . From their model, they found the charging efficiency of the system to be around 83% and the discharging efficiency to be 87%.
The invention provides an energy-saving brake system of an automobile. The system comprises an energy-saving brake drum shell fixed to an automobile hub. The energy-saving brake drum shell contains an energy-saving brake device with a hydraulic cavity in the middle. Hydraulic cylinders are evenly distributed on the outer side of the hydraulic cavity in the circumferential …
An electro-mechanical braking energy recovery system based on coil springs for energy saving applications in electric vehicles . In another study, a hydraulic method of a braking energy harvesting system was achieved with 90 kJ of energy storage and demonstrated an approximately 35% improvement in fuel efficiency [27].
Regenerative braking modeling, control and simulation of a hybrid energy storage system for an electric vehicle in extreme conditions IEEE Trans Transportation Electrification, 2 ( 4) ( 2016), pp. 465 - 479 A survey on hybrid energy storage system for EV with regenerative braking
The present invention discloses a hydraulic power-assisted braking system of an electric automobile, which comprises a braking master cylinder, a braking petal mechanism and a pipeline device. The present invention is characterized in that the system also comprises a hydraulic power-assisted body which is communicated with the braking master cylinder, the braking …
Numerous studies have focused on the optimization of energy storage in hydraulic hybrid drive trains. Optimizing the accumulator''s size and initial gas pressure [19], [20] is one method for enhancing efficiency. In addition, a number of control approaches have been developed to maximize the energy saved and generate a reliable brake torque by combining …
Based on the established model and energy flow analysis above, the effective storage power function under braking condition is defined as (19) where is the average terminal voltage of battery, is the average terminal voltage of UC. Substitute (20) and (21) into (19), it can be derived that (22) where, and .
18.1. Introduction. It goes without saying that in order to maintain safe control of a moving vehicle, one must be able to make it stop. The most basic safety system in a vehicle, the brake, has evolved from a simplistic wooden block on an iron rim into a computer-controlled electrohydraulic system with multiple levels of redundancy and the ability to actively control …
The energy storage form of the automotive brake energy recovery system includes flywheel energy storage, hydraulic energy storage and electrical energy storage. The energy storage process of the flywheel is mechanical energy converted into mechanical energy. The energy loss is low during the conversion process and the conversion efficiency is high.
In order to increase the regenerative braking energy recovery and the dynamic performance of vehicle, the hydraulic braking energy recovery system is confirmed to use with the storage battery ...
Traditional vehicles usually use a brake drum controlled by a hydraulic cylinder to brake with friction, and the angle at which the brake pedal is pressed can indirectly reflect the braking torque. ... Since the energy storage capacity of battery is much greater than the coil spring, the electric energy storage method always participates in ...
Hydraulic Hose Supplier, Brake Hose, Silicone Hose Manufacturers/ Suppliers - Nanjing Tiema Automobile Fittings Co., Ltd. ... Battery Energy Storage System Hybrid Inverter and Lithium Battery All in One System off Grid Solution. ... Was established in 2010 and is a professional auto spare parts manufacturer. The factory covers an area of 5 ...
The simulation models of the vehicle are developed on the basis of the software, Advisor 2002, which is validated by the road tests. The simulation results indicate that 42.7% of the brake energy can be recaptured in the hydraulic hybrid vehicle, whereas 41.6% of the traction energy is wasted in the braking of a conventional vehicle.
The purpose of this paper is to develop a control strategy of optimal brake energy recovery for a parallel hydraulic hybrid vehicle, in which the shifting schedule of the torque coupler and the …
hydraulic energy storage, electrochemical energy storage, and pressure storage. This paper makes a simple analysis of these four ways, and design a regenerative braking system based on the flywheel ... store part of the kinetic energy during the process of automobile brake or slow down through the energy recovery system. On the one hand, the ...
Considering the high power density and high recovery efficiency of the hydraulic energy storage system, the power system combined with the hydraulic pump is adopted. ... Chen L. and Pan C.F. 2014 Co-simulation Study of Electro-hydraulic Compound Brake System of Electric Vehicle Journal of Chongqing University of Technology(Natural Science) 29 ...
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