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. General speaking, conventional manual or automatic transmission. Hydraulic hybrids are able to capture and reuse 7080% of the otherwise wasted braking energy. Development of a hydromechanical hydraulic hybrid drive train. Difference between hybrid and electric cars difference. Control of the electric motor is a fundamental issue for traction application in electric. It focuses on the power and propulsion systems for these vehicles, including issues related to power and energy management. Energy efficiency comparison between hydraulic hybrid and hybrid. In a parallel hydraulic hybrid vehicle hhv, the engine still provides power to the wheels through a standard transmission. Comparison of fuel economy between hydraulic hybrids and. Fuel cell vehicles are often fitted with a battery or supercapacitor to deliver peak acceleration power and to reduce the size and power constraints on the fuel cell and thus its cost. Typically, the differences are relegated to the engine block and drive train for electric vehicles, with many notable parts essential for hybrid and gasoline vehicles being removed entirely. These cars move closer to the fully electric vehicle side of the continuum, with the ability to go longer. Pureevs are charged from an external electricity supply, typically plugging in to an ev charge point.
Hybrid electric vehicles provides vital guidance to help a new generation of engineers master the principles of and further advance hybrid vehicle technology. 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. Electric and hybrid vehicles download ebook pdf, epub. Despite the name, electric power steering does not require nearly as much power to perform the same function. 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. The ups pilot vehicle demonstrates the cost effectiveness of hydraulic hybrid technology which can be applied to all trucks that operate in urban environments as well as highway vehicles. Hybrid electrical vehicles introduction a hybrid electric vehicle hev has two types of energy storage units, electricity and fuel. Recent trends hydraulic hybrid vehicles ankush menat 2. Also explore the seminar topics paper on hydraulic hybrid vehicle with abstract or synopsis.
This paper presents a hydraulic hybrid vehicle drive train to improve the fuel efficiency of a passenger car. In a parallel hydraulic hybrid vehicles, the pumpmotor is typically installed between the engine and gearbox, or between the gearbox and differential transmission box. Should you buy an electric vehicle or a plugin hybrid. The hybrid technology used in the powertrain comes in two forms, hydraulic and electric. 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. The epa estimates that co2 emissions from hydraulic hybrid ups trucks are 40 percent lower than conventional ups trucks, and a fleet of trucks could save 1,000 gallons of fuel a year. In the end, a more detailed comparison was made between hydraulic hybrid vehicles with hybrid electric vehicles.
In laboratory tests, the city fuel economy of the hydraulic hybrid ups vehicle. The authors address purely electric, hybrid electric, plugin hybrid electric, hybrid hydraulic, fuel cell, and offroad hybrid vehicle systems. Series hybrid vehicle system design considerations. Heavy duty diesel truck and bus hybrid powertrain study 1. Another promising dimension is the development of mild hybrid systems, which will likely provide one. The basic models of hydraulic hybrid vehicles are shown and explained. 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. Some converted vehicles can achieve up to 100 miles per gallon of gasoline equivalent mpge until the auxiliary battery is exhausted, at which point the vehicle. The primary source of hybrid cars is the internal combustion engine, with a battery of electric cells and a hub mounted dc motors, which supplies the supplementary propulsion.
Its unlikely that it will be possible to store enough pressurized hydraulic fluid to give a vehicle significant range as a standalone system. Electrichydraulic hybrid drivetrain for city vehicles. Nevertheless, electric motivation should not be given the standing eight count simply because hydraulics is buffed up on steroids, and walking around the gym leaving sweat and hair gel on all the machines. Traditional electric hybrid vehicles combine internal combustion engine power plants with electric motorsgenerators to propel the vehicle.
Another promising dimension is the development of mild hybrid systems, which will likely provide onehalf to twothirds the fuelefficiency benefits of fullfunction hybrids at less than half the cost. Pdf energy efficiency comparison between hydraulic hybrid and. However, the optimization methodology presented in this paper can be used on electric hybrids and a brief comparison between hydraulic and electric hybrid vehicle is discussed. Hybrid electric vehicle systems overview our patented electric hybrid power system uses a parallel configuration that maintains the vehicles conventional drivetrain layout and uses patented controls to blend engine torque with electric torque to move the vehicle. Additionally, electric vehicles help drivers save more money than plugin hybrids do, since they dont use any fuel. Are hydraulic hybrid vehicles the future of driving. The epa estimates that co2 emissions from hydraulic hybrid. A new series hydraulic hybrid vehicle model with a regenerative. In some situations, the engine can shut off entirely, relying solely on the battery. A hybrid vehicle uses two or more distinct types of power, such as submarines that use diesels when surfaced and batteries when submerged.
Hydraulic hybrids use many of the same principles as electric hybrids, but instead of using potentially pollutive and heavy batteries, they use lightweight components and clean fluid to power. Hevs can be converted to phevs by adding additional battery capacity and onboard charging equipment. Technology development and cost reduction better, lowercost hybrid subsystems. Photo by andrew hudgins, nrel 17416 electric drive vehicles at a glance hevs. Currently, there are only 30 purely electric vehicle models to choose from, with many manufacturers offering hybrid gasoline electric options as well. Design and analysis of hydraulic hybrid passenger vehicles. The electric motors and their control technology are key components of hybrid electric vehicles hevs. Another hybrid option has been put forth and tested by a number of businesses, as well as the environmental protection agency epa. Hybrid power trains use diesel electric or turbo electric to power railway locomotives, buses, heavy goods vehicles, mobile hydraulic machinery, and ships.
Pdf hydraulic hybrid vehicle configurations and comparison with. The role of pumpmotor is to provide assistance to the. Hydraulic hybrid vehicle configurations and comparison. Apr 17, 2020 explore hybrid car with free download of seminar report and ppt in pdf and doc format. Hybrid electric vehicles are energy efficient and reduce the emissions considerably. A hydraulic system replaces all of the electronic components of an gas electric hybrid starter motor. For trucks and buses, this can also be less expensive than electric systems, due.
Introduction to how hydraulic hybrids work howstuffworks. The curve shows the number of papers in the ieee database containing the key words hybrid vehicle. How parallel hydraulic hybrid vehicles work in a parallel hydraulic hybrid vehicle hhv, the engine still provides power to the wheels through a standard transmission. Explore hydraulic hybrid vehicle with free download of seminar report and ppt in pdf and doc format. Electricity means that a battery sometimes assisted by ultracaps is used to. Previous terms have baselined the xebra, and integrated a hydraulic slowfill pump and hydraulic. I love the mechanical elegance and oldschool charm of hydraulics, but i am betting the future is electric with hybrids as the motive power energy source of the future. Apr 17, 2020 hydraulic power steering uses 90% more of the engines power and resources than electric power steering.
Internal combustion engine vehicles 1 a united statesbased comprehensive assessment battery electric vehicles bevs do not consume gasoline or produce. 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. In the next few lecture, lectures well be talking about hydraulic hybrid vehicles, and comparing them to electric. Hevs are powered by an ice and by an electric motor that uses energy stored in a battery. Electric hybrid vehicles have been the first hybrid technology to be. For trucks and buses, this can also be less expensive than electric.
Fuel economy comparisons of series, parallel and hmt. A hybrid vehicle has two powertrains, one gasoline and one electric, which work together for maximum efficiency. For a large vehicle like a delivery truck or a bus an electric hybrid system cannot be used. Hydraulic hybrids use many of the same principles as electric.
Chase abstract since hydraulic hybrid vehicles are power dense and do not require costly batteries, they have the potential to achieve high fuel economy and performance and at low cost. Keep in mind this would be strictly a mild hybrid setup, useful mainly for load leveling a combustion engine powertrain. Hhvs, like all hybrid vehicles, use two sources of power to drive the wheels. It should also support department of defense dod initiatives to install microgrids on bases that will utilize plugin hybrid and full electric vehicles to provide two way power flow in a vehicle. Hybrid electric vehicles hevscombine a gasolinepowered combustion engine with an electric motor to offer a more environmentallyfriendly driving experiences. Optimized production vehicles are expected to have larger nox reductions. Hybrid car seminar report, ppt, pdf for mechanical. Chevrolet notes the term electrified covers all vehicles that use electric power at varying stages, such as eassist, hybrid, plugin hybrid, and extendedrange electric vehicles. Internal combustion timeline for hybrid technology development the batteries study. Hybrid vehicles are also starting to emerge on a number of differing platforms from cars, trucks, and work boats to construction equipment and agricultural vehicles. Comparing ac induction with permanent magnet motors in. Aug 11, 2010 a hydraulic system replaces all of the electronic components of an gas electric hybrid starter motor, generators, controllers, batteries, etcetera with three parts.
In a regular vehicle, power is provided to the wheels by the engine through the transmission and drive shaft. Introduction definitions classification electric vs. This thesis focuses on the design and modeling of the hydraulic hybrids using. Most electric vehicles waste over 50% of the battery energy when challenged with the accelerations of modern traffic. They capture and reuse 7080% of the vehicles brakingdecelerating energy compared to 55% for electric hybrids. This ford f550 parallel hydraulic hybrid vehicle was built to demonstrate.
Hybrid electric vehicles provides an introduction to hybrid vehicles, which include purely electric, hybrid electric, hybrid hydraulic, fuel cell vehicles, plugin hybrid electric, and offroad hybrid vehicular systems. 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. Fuel economy comparisons of series, parallel and hmt hydraulic hybrid architectures zhekang du, kai loon cheong, perry y. Electric power transmission is clean, efficient and accurate on levels hydraulics cant match. In a parallel hydraulic hybrid there is a conventional engine and drive train system with hydraulic hybrid. Comparison between input coupled and output coupled power. A gas electric hybrid recovers 30 percent of braking energy, while a hydraulic hybrid can recover 70 percent, contributing to better efficiency source. Jul 24, 20 thousands of electric vehicles are being sold every month now. Development of a hydromechanical hydraulic hybrid drive. If hybrid hydraulics prove their mettle for more industrial uses, cars may not be far behind.
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. Figure 2 research trend in the control of hybrid vehicles. A lot of things have been tried to make hybrid motor vehicles, from super capacitors to large flywheels. The plugin hybrid is the next logical step forward from the series hybrid system. 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. Hydraulic hybrid vehicles california clean air technology. Pdf model of a hydraulic hybrid vehicle with regenerative. They also offer a longer electric only range than plugin hybrids. Apr 11, 2018 the ehp system is designed for hybrid electric and any mobile application requiring power from an electric motor. Owning a hybrid has certain benefits over an all electric vehicle, and vice versa. Plugin hybrid vs electric is an electric vehicle right for you.
It should also support department of defense dod initiatives to install microgrids on bases that will utilize plugin hybrid and full electric vehicles to provide two way power flow in a vehicletogrid v2g system. A dieselturbine engine drives an electric generator or hydraulic pump, which powers electric hydraulic motors strictly an electric hydraulic transmission not a hybrid, unless it can accept power from outside. How series hydraulic hybrid vehicles work clean automotive. Energy efficiency comparison between hydraulic hybrid and hybrid electric vehicles article pdf available in energies 86. Hybrid cars make use of a mixture of gas and electric power. The main advantages and disadvantages, from the aspect of energy and power density, efficiency of the.
Toyota had trouble talking people into the prius until the stability and value of the. Electricpowered pumps for mobile equipment hydraulics. Electric and hybrid car drivers also benefit from a variety of state incentives, which offer cash rebates, state income tax credits, sales tax waivers and more. Read on for the main differences between hybrid cars and electric vehicles. Previous terms have baselined the xebra, and integrated a hydraulic slowfill pump and hydraulic motor to propel the xebra. Hybrid and plugin electric vehicles all electric and plugin hybrid electric vehicles are charged by plugging the vehicle into an electric power source.
When compared to the parallel hybrid design, series hybrid systems achieve better fuel efficiency and emission reductions. This video explains the benefits of hydraulic hybrid vehicle or hhv technology. The hydraulic components are attached to the driveshaft and assist in stopping and accelerating the vehicle. In fact, most automotive manufacturers have stated that they will put more of an emphasis on electric vehicles. How series hydraulic hybrid vehicles work in a regular vehicle, power is provided to the wheels by the engine through the transmission and drive shaft. Hybrid power trains are becoming an increasingly popular way of increasing vehicle efficiency and reducing emissions. Like electric vehicles, hybrid cars offer an alternative to conventional gaspowered cars that reduces operating costs and emissions. The developed hydromechanical drive train enables independent control of the torque at each wheel. It focuses on the power and propulsion systems for these vehicles, including issues related to power and. The battery charger is to convert the electricity from mains to charge the battery 3. These include the fuel injection system, alternators, the typical car battery, radiator, and potentially much more depending on the model.
Energy efficiency comparison between hydraulic hybrid and. A paper published in 2009 in energy policy in the context of this fast moving field admittedly fairly dated comparing battery electric, hydrogen fuel cell and fuel cell hybrid vehicles found that the drivetrain costs of full fcevs is around 50% higher than battery electric vehicles. The motivation for developing this drive train is a hydraulic hybrid vehicle. With all that wear and tear on the engine, it is going to shorten its lifespan considerably. Battery evs have no combustion engine, only an onboard battery which provides energy to an electric motor. Transmission configurations the hydromechanical transmission hmt, a form of. Hi, we have, hydraulic, hybrid, and all electric, and you are right, every one has its own pro and cons, my case, we have sumitomos all electric, and sodick hydraulic and hybrids,,sumitomos. The system consists of an electric motor directly coupled to a hydraulic pump controlled by an electric drive designed for mobile equipmenta mobilehardened drive, as parker calls it. Sep 15, 2017 hybrid electric vehicles provides an introduction to hybrid vehicles, which include purely electric, hybrid electric, hybrid hydraulic, fuel cell vehicles, plugin hybrid electric, and offroad hybrid vehicular systems. The latest developments in the field of hybrid electric vehicles hybrid electric vehicles provides an introduction to hybrid vehicles, which include purely electric, hybrid electric, hybrid hydraulic, fuel cell vehicles.
Tactical vehicles should benefit as well through technology transfer. In a hydraulic hybrid, pressurized fluid is used as secondary source of power. Hydraulic hybrid vehicles, or hhvs use a pressurized fluid power source, along with a conventional internal combustion engine ice, to achieve better fuel economy and reductions in harmful emissions. The motors and pumps are simple, relatively lowcost, and easy to packageas are epicyclic gearsso the hybrid air could be lighter and cheaper than a gas electric hybrid. As their name suggests, hybrid cars are a combination. Hydraulic hybrid vehicle seminar report, ppt, pdf for. If you need captions, please click the cc button on the player to turn them on. Hybrid cars are classified according to the type of drivetrain or powertrain they feature, which determines how the engine and the motor work together to power the car. 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. The latest developments in the field of hybrid electric vehicles. Mar 15, 2020 drivers of other electric or plugin hybrid vehicles that use the j1772 plug e.
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