Electric road vehicle an overview sciencedirect topics. Read on to learn exactly how hydraulic hybrids work, how they compare to electric hybrids and how theyre being used today. The vehicle uses a hydraulic system during acceleration to increase the vehicles range and efficiency. Hydraulic hybrid vehicle systems consists of four main components. This ford f550 parallel hydraulic hybrid vehicle was built to demonstrate the benefits of parallel hydraulic hybrids and to examine the costeffectiveness of parallel systems with the following results. Introduction to how hydraulic hybrids work howstuffworks. Proposed actuator design allows the replacement of long flexible pipe lines and associated hydraulic losses by electrical cables and enables. A hydrostatic dynamometer has been constructed to test a hydraulic hybrid passenger vehicle. Both sales of hybrid vehicles and the number of hybrid. In a parallel hydraulic hybrid there is a conventional engine and drive train system with hydraulic hybrid technology attached to the drive shaft to learn more visit how parallel hhvs works. Credits for electric and plugin hybrid electric vehicles. The hybrid designed for this project used a hydraulic launch assist system to capture energy during braking and reuse it. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. A hybrid vehicle has multiple forms of motive power.
While all hydraulic hybrids use reservoirs, accumulators and pumps, there are two ways those components can be coupled with a vehicle. In a hydraulic hybrid, pressurized fluid is used as secondary source of power. Design and construction of a hydrostatic dynamometer for. Explore hydraulic hybrid vehicle with free download of seminar report and ppt in pdf and doc format. The first, a parallel hydraulic hybrid, simply connects the hybrid components to a conventional transmission and driveshaft. Optimal design of powersplit transmissions for hydraulic. Pdf plugin hybrid electric vehicle value proposition study. Optimized production vehicles are expected to have larger nox reductions. A hybrid vehicle uses two or more distinct types of power, such as submarines that use diesels when surfaced and batteries when submerged.
Hydraulic hybrid vehicles are the future vehicle as it is more better and efficient than the traditional cars as hydraulics systems can recover about 75% of the kinetic energy during braking and deceleration, as compared to the 25% recovery from electric hybrids and its proven to be more costeffective than electric hybrid systems. The rbs provides hybrid electric vehicles with capability to recover significant amount of energy during braking 23. Hybrid vehicles are becoming more and more common in the auto industry. To learn more about transmissions and driveshafts, read how automatic transmissions work and how manual transmissions work. Hybrid electric vehicles have drawn a lot of attention in the recent years because they reduce fuel consumption and emission 1. The development of epas hydraulic hybrid technology epas multiyear research program to develop hydraulic hybrid technology has produced a proofofconcept test chassis that. Figure 2 shows the comparison of emb and ehb electro hydraulic brake systems. Hybrid vehicle drive trains transmit power to the driving wheels for hybrid vehicles. Pdf utilisation of electrohydraulic hybrid actuator. Parallel and series hydraulic hybrids howstuffworks. As the maximum efficiency conditions impose the level of the converted power, an intermittent timemodulated operation is applied to the pneumaticto. This video explains the basic mechanics of series hydraulic hybrid vehicle hhv technology. System modeling and control strategy development for a. Chase abstract hydraulic hybrid vehicles are inherently power dense.
The senior design students have a goal of having a working prototype of this control system in operating order that is installed on a vehicle that utilizes this hydraulic hybrid technology. Triples the fuel economy of conventional vehicles 80 miles per gallon mpg for a midsize family sedan that also incorporates improved tires and aerodynamics. The development of a power management strategy for a. Hydraulic hybrid vehicle seminar report, ppt, pdf for. A hybrid vehicle is a vehicle that uses two or more distinct power sources to move the vehicle. What are the advantages and disadvantages of series hybrid designs. A hybrid drivetrain with a hydraulic continuously variable transmission cvt is modeled to include efficiency information of the engine and. The hydraulic hybrid vehicle also achieves approximately 50% lower hydrocarbon and 60% lower particulate matter in laboratory tests.
Demonstrated the ease of retrofitting trucks with hydraulic hybrid technology. Principle of hybrid energy storage systems based on hydropneumatics and supercapacitors for distributed generation. One product example in public transport is the mercedesbenz citaro g bluetec hybrid mercedes benz, 20. An overview of literature for parallel, series and powersplit hydraulic hybrid vehicle is presented. An important system of hybrid electric vehicles is regenerative braking system rbs. An alternative to electric hybrid vehicles, hydraulic hybrids transfer kinetic energy generated during braking to an accumulator of pressurized fluid, which then provides energy when the vehicle accelerates. Parallel hybrid vehicles tend to be mechanically complex, requiring a larger combustion engine, a transmission, and a mechanism to couple both motors to the drive wheels. Read on to learn exactly how hydraulic hybrids work, how they compare to electric hybrids and how theyre. Congress introduced the first bills recommending the use of electric vehic. Principle of hybrid energy storage systems based on hydro. The hev powertrain was modeled to include the internal combustion engine, electric motor, battery, and transmission.
When compared to the parallel hybrid design, series hybrid systems achieve better fuel efficiency and emission reductions. This paper presents a hydraulic hybrid vehicle drive train to improve the fuel efficiency of a passenger car. A copy of the invoice, purchase agreement, or lease agreement for the qualifying. Furthermore, the hydraulicelectric hybrid vehicles consumed 11. The term most commonly refers to hybrid electric vehicles hevs, which combine an internal combustion engine and one or more electric motors. Powersplit or hydromechanical transmissions hmt have advantages over. Series hybrid vehicle system design considerations. Optimal design of powersplit transmissions for hydraulic hybrid passenger vehicles kai loon cheong, perry y. Hhvs, like all hybrid vehicles, use two sources of power to drive the wheels.
Hybrid electrical vehicles introduction a hybrid electric vehicle hev has two types of energy storage units, electricity and fuel. The main purpose of purchasing a hybrid car is to improve mileage and reduce harmful gas emissions. In a series hhv, the engine is not directly connected to the wheels. Hybrid vehicles provide a solution to this demand, and hydraulic hybrid vehicles are shown to have a cheaper cost of ownership compared to electric hybrid vehicles. Matson vehicle mechanical equipment document 1 of 7 requirements for shipping vehicles or mechanical equipment powered by internal combustion engines or batteries by water. Electricity means that a battery sometimes assisted by ultracaps is used to store the energy, and that an electromotor from now on called motor will be used as traction motor. Explore hybrid car with free download of seminar report and ppt in pdf and doc format. Engineering hydraulic hybrid vehicles using stop to power go a global cleantech opportunity. The classification for un3166 now includes many descriptions to account for the changes in engineering designs and fuel technologies. Are hydraulic hybrid vehicles the future of driving. Eindhoven university of technology master analysis and. For example, a hybrid may receive its energy by burning petroleum, but switch between an electric motor and a combustion engine. Four parallel hydraulic hybrid diesel collection trucks have been incorporated into waste managements fleet and are being tested in fort worth to study and optimize the hybrid systems efficiency and reliability. The epa is a research leader in the application of hydraulics in vehicles.
Pdf plugin hybrid electric vehicles phevs offer significant improvements in fuel. A delivery vehicle is an excellent application for hybrid technology since its service cycles involve numerous braking events. In a regular vehicle, power is provided to the wheels by the engine through the transmission and drive shaft. Other means to store energy include pressurized fluid in hydraulic hybrids the basic principle with hybrid vehicles is that the different motors work better at different speeds. Phhv uses a traditional mechanical drive train with hydraulic pumpmotor unit inline between the transmissionandaxle. This paper investigates the modeling and simulation of emb systems for hybrid electric vehicles hev. Analysis of the regenerative braking system for a hybrid. Hydraulic hybrid technology has significant commercial potential for a wide range of mediumsized vehicles such as urban delivery trucks, shuttletransit buses, and waste disposal vehicles. In some systems, a hydraulic transformer is also installed for converting output flow at any pressure with a very low power loss. A hybrid vehicle is simply a vehicle that operates using a primary engine and secondary energy storage device. Prius, the first commercial hybrid electric vehicle hev, was. Hybrid vehicles reduce their fuel consumption by capturing energy normally lost during braking and reusing it during acceleration in addition to managing the engine to enable it. This prototype vehicle has also demonstrated modest reductions in nox emissions.
If you need captions, please click the cc button on the player to turn them on. Hydraulic hybrid vehicle page 2 because there is a large demand for better fuel economy on vehicles, researching different hybrid methods is necessary. The developed hydromechanical drive train enables independent control of the torque at each wheel. Keywords brakes, brake blending, electric vehicle, antilock brake system, regenerative braking. The technology, which uses hydraulics instead of electrical components to aid an internal combustion engine, is. Effect of different regenerative braking strategies on. Development of a hydromechanical hydraulic hybrid drive. What are the advantages and disadvantages of series hybrid. A comprehensive study of key electric vehicle ev components. Recent trends hydraulic hybrid vehicles ankush menat 2. Electric vehicles can run on rechargeable batteries, and hybrid vehicles use a combination of a gasoline engine and an alternative power plant. Hybrid power trains are becoming an increasingly popular way of increasing vehicle efficiency and reducing emissions.
When brought to a stop, the hydraulic hybrid system can recover and reuse more than 70 percent of that energy whereas batterypowered hybrids typically reuse only 25 percent of a vehicle s. Energy efficiency comparison between hydraulic hybrid. Other means to store energy include pressurized fluid in hydraulic hybrids. How heavy duty series hydraulic hybrid vehicles hhvs. This paper introduces the electro hydraulic hybrid actuator system specially developed for compact assembly. Hrb hydrostatic regenerative braking system the hydraulic.
Also explore the seminar topics paper on hybrid car with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. In this work the series hydraulic hybrid model of a truck class ii is established for both forward and backward simulation. The goal of this project was to install a hydraulic drive system in which the motor was powered by a pump, allowing the motor to always run at peak horsepower and store excess power in a hydraulic accumulator for use when needed. In vehicles with parallel hybrid drivetrains, the engine and electric motor work in tandem to generate the power that drives the wheels. This larger battery and motor, along with the generator, add to the vehicle s cost, making series hybrids more expensive than parallel hybrids. Another mqp was completed on the vehicle for the 20092010 school year, titled hydraulic series hybrid baja car. While electric hybrid vehicles are the most familiar and have been commercially produced, hydraulic regenerative braking system technology is. Hybrid car seminar report, ppt, pdf for mechanical. Also explore the seminar topics paper on hydraulic hybrid vehicle with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Through the design of these simulations, a comparative analysis of the hydraulic hybrid to the electric hybrid is provided for the case of the medium duty vehicle and the benefits of having an electric hydraulic hybrid layout designed for the electric forklift applications are studied. The development of a power management strategy for a hydraulic hybrid passenger vehicle a dissertation submitted to the faculty of the graduate school of the university of minnesota by jonathan james meyer in partial fulfillment of the requirements for the degree of doctor of philosophy kim a. The motivation for developing this drive train is a hydraulic hybrid vehicle test. Hydraulic hybrids draw from two sources of power to operate the vehicle.
In the next few lecture, lectures well be talking about hydraulic hybrid vehicles, and comparing them to electric hybrids in, in this video. System for hybrid electric vehicles using an electromechanical brake. On the consumer side, it can reduce the electricity bill as the. Hydraulic hybrid technology uses a hydraulic energy storage and propulsion system in the vehicle. Requirements for shipping vehicles or mechanical equipment.
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