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. Mar 21, 2018 force that is applied at one point is transmitted to another point using an incompressible fluid. A new series hydraulic hybrid vehicle model with a regenerative. The vehicle uses hydraulic pump motors and hydraulic storage tanks to recover and store energy, similar to what is done with electric motors and batteries in hybrid. Figure 7 shows engine power, gear number and motor. Hhvs, like all hybrid vehicles, use two sources of power to drive the wheels. Similar to hybrid electric vehicles hevs, they reduce fuel consumption and emission by regenerating braking power, and by allowing the engine and transmission components to operate more efciently.
Structural diagram of the manual transmission vehicle. That means that, flying down the highway, a hydraulic hybrid isnt much different than a regular car. Figure 1 configuration of a parallel hydraulic hybrid vehicle. Unlike the electrical hybrid system, it doesnt require a battery, and therefore keeps the environment free from toxic chemicals. Explore hydraulic hybrid vehicle with free download of seminar report and ppt in pdf and doc format. How light duty series hydraulic hybrid vehicles hhvs work.
The system is relatively compact, and fits between the frame rails towards the center of the vehicle. Hybrid power trains use dieselelectric or turboelectric to power railway locomotives, buses, heavy goods vehicles, mobile hydraulic machinery, and ships. Hydraulic hybrid vehicle configurations and comparison. How series hydraulic hybrid vehicles work clean automotive. The hydraulic components are attached to the driveshaft and assist in stopping and accelerating the vehicle. Instead of storing energy in a big lithiumion battery, however, it uses a hydraulic pumpmotor, reservoir, and accumulator in combination with an internal combustion engine. They capture and reuse 70% 80% of the vehicles brakingdecelerating energy compared to 55% for electric hybrids. The three most common categories of hydraulic hybrid vehicle.
The 170hp diesel engine is coupled to a hydraulic pump instead of a transmission. Like all hybrid systems, lightning hybrids ers hydraulic hybrid. Hydraulic hybrid drivetrain manufacturer to distribute on. Apr 17, 2020 explore hybrid car with free download of seminar report and ppt in pdf and doc format. 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. For trucks and buses, this can also be less expensive. Kinetics drive solutions hydraulichybrid drives hhds replace conventional vehicle transmissions with a power distribution unit that decouples the wheels from the engine for superior engine management. 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. The hydraulic hybrid technology is a hybrid system which uses pressurized fluid as an alternative source of power to the engine. There are four main modes of operation in a parallel hhv. Engines for automobile, naples, italy, september 2007 sae transactions, journal of engines 26. Hybrid drives for vehicles or machines have at least two energy sources. By hydraulics, we mean the generation of forces and motion using hydraulic fluids. Hydraulic hybrid excavatormathematical model validation.
If you need captions, please click the cc button on the player to turn them on. The runwise, an advanced series hydraulic hybrid drive system developed in 2005 by parker hannifin, has also shown significant results. The hydraulic hybrid passenger vehicle hhpv test bed fig. Ppt hydraulic hybrid powerpoint presentation free to. A hydraulic fluid of some sort or another often water, or mineral oil is pressurized and pumped through tubes, and its movement through an engine moves cogs or gears. An hydraulic hybrid drivetrain adds hydraulic energy storage and powerconverting components to a traditional, typically combustionenginebased, transmission in. Worlds first full hydraulic hybrid in a delivery truck. In the series hydraulic hybrid truck, a highefficiency diesel engine is combined with a unique hydraulic propulsion system to replace the conventional drivetrain and transmission. Find powerpoint presentations and slides using the power of, find free presentations research about hydraulic hybrid vehicle ppt. The schematic of the proposed hydraulic hybrid version of the delivery trucks powertrain is given in fig. The secondary energy source in hybrid systems can be either electrical batteries, doublelayer capacitors, flywheel systems or hydraulic. This is a multiterm project, and the ultimate goal is to convert it into the worlds first hydraulic electric hybrid, a project you can drive at the end of the term. Figure 1, consists of a hydraulic pumpmotor mounted between the engine and a mechanical transmission.
September, 2004vehicles with the potential for dramatic improvements in fuel efficiency, performance, and costeffectiveness due to new advancements in hydraulic hybrid technology have been. Optimization and control of a hydromechanical transmission. Energy efficiency comparison between hydraulic hybrid. Also, a hydraulic motor is usually designed for working pressure at both sides of the motor, whereas most hydraulic pumps rely on low pressure provided from the reservoir at the input side and would leak fluid when abused as a motor. Optimal power management for a hydraulic hybrid delivery. View and download powerpoint presentations on hydraulic hybrid vehicle ppt. The payload estimate used for testing is the result of discussions with ups as an average daily load and is directly comparable to a previous dynamometer test series 3, 6. This video explains the basic mechanics of series hydraulic hybrid vehicle hhv technology. A less than twoyear payback when produced in high volume. And what i mean by this is in an input couple system, we are coupling our engine directly to a hydraulic pump through a deere set.
Pdf model of a hydraulic hybrid vehicle with regenerative. Hydraulic hybrid drivetrain manufacturer to distribute on east coast june, 20 by mary gannon 1 comment lightning hybrids, loveland, colo. Comparison between cvt and full hybrid engine management. Of course, we cant have a perfectly efficient hydraulic system, but companies have been able to find an alternative source of power for driving the hydraulic pump. Development of a hydromechanical hydraulic hybrid drive train. Our engineers designed the hydraulichybrid drive to address the need for more efficient use of traditional energy sources. 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. But in traffic, particularly stop and go traffic, a series hydraulic hybrid can shut its engine off and use hydraulic power alone. Hydraulic hybrid technology is, in broad theory, similar to electric hybrid technology. The xebra is a 3wheeled electric vehicle that looks like a miniutility truck, but it is classified as a motorcycle, legal for driving in the united states. One obvious advantage with hydraulic hybrid systems is that they create a unique opportunity to optimize the engine loading at all speeds. Lightning hybrids, developer and manufacturer of hydraulic hybrid systems for medium and heavyduty trucks and buses, announced an agreement with kiessling transit to supply 35. Figure 4 to the hydraulic highpressure accumulator big.
Tasks of a hydraulic installation hydraulic systems are used in modern production plants and manufacturing installations. The hydraulic series hybrid uses the combustion engine to power a hydraulic pumpmotor. The technology, which uses hydraulics instead of electrical components to aid an internal combustion engine, is said to offer big efficiency benefits. 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. Upss fleet of iconic brown delivery vans is getting a little bit greener with the addition of some new hybrid trucks. The hybrid power systems used in automobiles have been adapted into the construction machinery. Hydraulic hybrid vehicles are equipped with an accumulator for energy storage. The primary power source is the same diesel engine used in the inter cooler im air exhaust gas tc trns c t em d ps ds ds icm diesel engine hydraulic pm reservoir. The hydraulic fluids represent the medium for power transmission. However, many hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. Therefore, this novel waterbased hydraulic hybrid system will reduce the usage of diesel fuel that eventually create a new green technology.
Pdf hydraulic hybrid vehicle configurations and comparison with. At first, the structure of new ers that combines the advantages of an electric and hydraulic accumulator is analyzed. There has been plenty of research done for manual transmissions vehicles, series and parallel electric. A powersplit architecture similar to the toyota hybrid system in a prius was chosen 9. Fabrication of three axis pneumatic modern trailer4. Hydraulic hybrid tech could provide buses, garbage trucks and other heavyduty vehicles with big improvements in fuel economy at relatively little cost.
Reducing the power demand on the diesel engine, reduces fuel. Pdf this paper explains the basic principles of hydraulic hybrid vehicles. The object of this book is to teach you more about hydraulics and its. In this new concept, the complete mechanical transmission of a car is replaced by a full hydrostatic transmission, allowing energy recuperation and an efficient operation.
Hydraulic hybrid is engine of the year bosch also receives automotive interiors expo award for 315 cn radio navigation system hydraulic hybrid is innovative alternative powertrain bosch is. The basic models of hydraulic hybrid vehicles are shown and explained. Fuel savings of up to 25 percent or more occurs because the engine turns off until acceleration depletes the hydraulic fluid. This paper first analyzes the difference between the hybrid powered automobile vehicle and the hybrid powered. Development of hybrid powered hydraulic construction machinery. Design optimization of a hydraulic flywheel accumulator for a. In a hydraulic hybrid, power comes from pressurized fluid in addition to the internal combustion engine propulsion that helps in better fuel economy than the conventional system. This video explains the benefits of hydraulic hybrid vehicle or hhv technology. Hydraulic hybrid and conventional parcel delivery vehicles. Series hydraulic hybrid system with optimized supervisory control. About the power density, hydraulic machines have around 5. Remember, the hydraulic hybrid system gets its power through regenerative braking. Hybrid hydraulic drives kd solutions kinetics drive.
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. Sound during engine restarts the, the hydraulic pump. Apr 27, 2014 parallel v series in a parallel hydraulic hybrid, the engine still has a mechanical connection through the pump to the drive wheels. Hydraulic hybrid vehicles hhvs are mainly operated using engines. In a series hydraulic hybrid vehicle, the pumpmotor directly connects to the driveshaft, or the inwheel motors provide driving torque directly to the wheel. Hydraulic system runs with engine shut off hydraulics. This smarter hydraulic engine could supercharge the world. Series hybrid in a series hydraulic hybrid, the engine is directly connected to the hydraulic pump with no direct connection to the wheels. Are hydraulic hybrid vehicles the future of driving. The layout displayed is for light duty vehicles such as suvs, minivans and sedans.
Founded in 2008, lightning hybrids is now installing aftermarket hydraulic hybrid systems on fleet trucks with a gvwr over 10,000. Optimal design of powersplit transmissions for hydraulic. Hydraulic hybrid vehicle seminar report, ppt, pdf for. Jim obrien, of hybriddrive systems, in deerfield michigan, converted a 1968 volkswagen beetle into a hydraulic hybrid. 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. This rearwheeldrive hydraulic hybrid truck has two power sources. Similar to hybrid electric vehicles hevs, they reduce fuel consumption and emission by regenerating braking power, and by allowing the engine and transmission components to operate more ef. Can hydraulic hybrids compete with electric hybrids. The pressure is on as ups adds more hydraulic hybrids wired. A hybrid drivetrain with a hydraulic continuously variable transmission cvt is modeled to include efficiency information of the engine and hydraulic components. Hydraulic hybrid vehicles california clean air technology. Hybrid car seminar report, ppt, pdf for mechanical. A new series hydraulic hybrid vehicle model with a.
Hydraulics 101 pdf basic hydraulic theory the basis for all hydraulic systems is expressed by pascals law which states that anywhere upon an enclosed liquid is transmitted undiminished, in all directions, to the interior of the container. 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. The engine shaft is directly connected to a hydraulic. Another hybrid option has been put forth and tested by a number of businesses, as well as the environmental protection agency epa. Oct 25, 2012 though the traditional energy regeneration systemers which used a hydraulic motor and a generator in hybrid excavators can regenerate part of the energy, the power of the motor and the generator should be larger and the time for regenerating energy is so short. Pdf format this file type includes high resolution graphics and schematics when applicable. Pdf optimization of a passenger hydraulic hybrid vehicle. The output of the transmission and a second hydraulic. The modeled hybrid uses a hydraulic pumpmotor unit operating in parallel with an internal combustion engine. In a series hydraulic hybrid vehicle shhv, the mechanical drive train is removed, and the vehicle is powered by a hydrostatic drive. The force is almost always multiplied in the process. What are the pros and cons of hydraulic hybrid vehicles. Aug 20, 2011 animation explaining hydraulic hybrid. Hydraulic accumulatormotorgenerator energy regeneration.
During swing deceleration the braking energy generated during swing deceleration is converted into electrical energy, and then the electricity is. Facing the environment problems, the improvement on the efficiency of the construction machinery such as the excavator and wheel loader is highly demanded. But even in a mild hybrid setup, there are knock on benefits to hydraulics. The internal combustion engine is only connected to a pump, and is set to operate in its most efficient power range to maintain the optimal hydraulic pressure in the accumulator. Even if a hydraulic system is 100% efficient, it still requires a gasoline or diesel engine to burn fuel in order to power the hydraulic power unit. Fabrication of hydraulic hybrid system for four wheeler2. How hydraulic hybrids save tons of fuel where its needed. It uses two planetary differentials at the rear wheels to combine the powers of the mechanical and.
Jun 07, 20 hydraulic hybrid is engine of the year bosch also receives automotive interiors expo award for 315 cn radio navigation system hydraulic hybrid is innovative alternative powertrain bosch is. In a parallel hydraulic hybrid vehicle hhv, the engine still provides power to the wheels through a standard transmission. The main energy source is usually a combustion engine diesel, petrol, gas or an electric motor connected to the mains supply. Eaton, epa showcase new fuelsaving hydraulic hybrid ups. 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. Developments towards a liquid piston stirling engine. The hydrid is a hydraulic hybrid drive train for both road vehicles and off road machinery. During 80 % of the propulsion time, the required wheel power is less than 11 kw indicated by the grey band in the diagram layout of the hydrid. The engine is also turbocharged to maximize the benefits of downsizing. Hydraulic hybrid is engine of the year automotive world.
Depending on the nature of the nonelectric energy source, we can distinguish between combustion ice, fuel cell, hydraulic or pneumatic power, and human power. That normally charges the accumulator, acts as a motor by going over center taking high pressure accumulator oil, and then using it to drive the engine, just like an electronic starter does, starting the engine. Keep in mind this would be strictly a mild hybrid setup, useful mainly for load leveling a combustion engine powertrain. However, instead of using electric components, the proposed system is a hydraulic hybrid. In a hydraulic hybrid, pressurized fluid is used as secondary source of power. Its unlikely that it will be possible to store enough pressurized hydraulic fluid to give a vehicle significant range as a standalone system.
Obrien said, we are not aware of anything else like it. A dieselturbine engine drives an electric generator or hydraulic pump, which powers electrichydraulic motors strictly an electrichydraulic transmission not a hybrid, unless it can accept power from outside. The hybrid truck users forum htuf, a governmentcorporate partnership led by calstart, has selected hybradrive systems llc hds to build three identical class 6 hydraulic series hybrid delivery trucks for realworld testing by ups. Recent trends hydraulic hybrid vehicles ankush menat 2. During regeneration the vehicles kinetic energy that is normally lost during braking is captured and used to drive the pumpmotor as a pump. 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. In laboratory tests, the city fuel economy of the hydraulic hybrid ups vehicle is 60% to 70% increased miles per gallon compared to a conventional ups truck. The hydraulic hybrids help in economising on fuel consumption by recovering and reusing the kinetic energy of the vehicle during braking and deceleration, and.
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