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. 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. Are hydraulic hybrid vehicles the future of driving. Aug 20, 2011 animation explaining hydraulic hybrid. Keep in mind this would be strictly a mild hybrid setup, useful mainly for load leveling a combustion engine powertrain. 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. They capture and reuse 70% 80% of the vehicles brakingdecelerating energy compared to 55% for electric hybrids. 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. 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.
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. Hydraulic hybrid excavatormathematical model validation. But in traffic, particularly stop and go traffic, a series hydraulic hybrid can shut its engine off and use hydraulic power alone. The object of this book is to teach you more about hydraulics and its. Obrien said, we are not aware of anything else like it. The system is relatively compact, and fits between the frame rails towards the center of the vehicle. Figure 7 shows engine power, gear number and motor.
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. It uses two planetary differentials at the rear wheels to combine the powers of the mechanical and. Hydraulic hybrid and conventional parcel delivery vehicles. Founded in 2008, lightning hybrids is now installing aftermarket hydraulic hybrid systems on fleet trucks with a gvwr over 10,000. The technology, which uses hydraulics instead of electrical components to aid an internal combustion engine, is said to offer big efficiency benefits. The 170hp diesel engine is coupled to a hydraulic pump instead of a transmission.
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. In a series hydraulic hybrid vehicle shhv, the mechanical drive train is removed, and the vehicle is powered by a hydrostatic drive. 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. Remember, the hydraulic hybrid system gets its power through regenerative braking. The hydraulic hybrid passenger vehicle hhpv test bed fig. If you need captions, please click the cc button on the player to turn them on. Explore hydraulic hybrid vehicle with free download of seminar report and ppt in pdf and doc format. Developments towards a liquid piston stirling engine. 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.
This smarter hydraulic engine could supercharge the world. The engine is also turbocharged to maximize the benefits of downsizing. This video explains the basic mechanics of series hydraulic hybrid vehicle hhv technology. During regeneration the vehicles kinetic energy that is normally lost during braking is captured and used to drive the pumpmotor as a pump. A new series hydraulic hybrid vehicle model with a regenerative. Structural diagram of the manual transmission vehicle. Worlds first full hydraulic hybrid in a delivery truck. Pdf format this file type includes high resolution graphics and schematics when applicable. Hydraulic hybrid is engine of the year automotive world. Development of hybrid powered hydraulic construction machinery. Hhvs, like all hybrid vehicles, use two sources of power to drive the wheels. Depending on the nature of the nonelectric energy source, we can distinguish between combustion ice, fuel cell, hydraulic or pneumatic power, and human power. Hydraulic hybrid technology is, in broad theory, similar to electric hybrid technology.
Eaton, epa showcase new fuelsaving hydraulic hybrid ups. 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 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. 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. Energy efficiency comparison between hydraulic hybrid. September, 2004vehicles with the potential for dramatic improvements in fuel efficiency, performance, and costeffectiveness due to new advancements in hydraulic hybrid technology have been. Recent trends hydraulic hybrid vehicles ankush menat 2. The three most common categories of hydraulic hybrid vehicle. 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. In a series hydraulic hybrid vehicle, the pumpmotor directly connects to the driveshaft, or the inwheel motors provide driving torque directly to the wheel. How light duty series hydraulic hybrid vehicles hhvs work.
Pdf optimization of a passenger hydraulic hybrid vehicle. This paper first analyzes the difference between the hybrid powered automobile vehicle and the hybrid powered. 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. A powersplit architecture similar to the toyota hybrid system in a prius was chosen 9. Figure 1 configuration of a parallel hydraulic hybrid vehicle. Tasks of a hydraulic installation hydraulic systems are used in modern production plants and manufacturing installations. A new series hydraulic hybrid vehicle model with a. This rearwheeldrive hydraulic hybrid truck has two power sources. Hydraulic hybrid vehicles hhvs are mainly operated using engines. Another hybrid option has been put forth and tested by a number of businesses, as well as the environmental protection agency epa. 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. The main energy source is usually a combustion engine diesel, petrol, gas or an electric motor connected to the mains supply.
How hydraulic hybrids save tons of fuel where its needed. In a parallel hydraulic hybrid vehicle hhv, the engine still provides power to the wheels through a standard transmission. Sound during engine restarts the, the hydraulic pump. Hydraulic hybrid vehicle seminar report, ppt, pdf for. Now, using this concept in conjunction with a full hydraulic drive, this engine is projected to improve the fuel economy of this vehicle by 85% percentage is higher for city driving. Pdf model of a hydraulic hybrid vehicle with regenerative. 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. Design optimization of a hydraulic flywheel accumulator for a. Regarding overcoming the problem of electrical drain lights, radio, etc in a hybrid mode where ic engine is switched off, i was reminded of the turbochargergenerator idea this uses the ic engine exhaust gas to spin a highspeed generator. 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.
Hybrid hydraulic drives kd solutions kinetics drive. A hybrid drivetrain with a hydraulic continuously variable transmission cvt is modeled to include efficiency information of the engine and hydraulic components. The basic models of hydraulic hybrid vehicles are shown and explained. Therefore, this novel waterbased hydraulic hybrid system will reduce the usage of diesel fuel that eventually create a new green technology. Hydraulic hybrid vehicle configurations and comparison. Pdf hydraulic hybrid vehicle configurations and comparison with. Fuel savings of up to 25 percent or more occurs because the engine turns off until acceleration depletes the hydraulic fluid. However, many hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. The hydraulic hybrids help in economising on fuel consumption by recovering and reusing the kinetic energy of the vehicle during braking and deceleration, and. 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. View and download powerpoint presentations on hydraulic hybrid vehicle ppt. 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.
In a hydraulic hybrid, pressurized fluid is used as secondary source of power. The output of the transmission and a second hydraulic. Optimal design of powersplit transmissions for hydraulic. 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. Hydraulic hybrid drivetrain manufacturer to distribute on. About the power density, hydraulic machines have around 5. 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.
The hydrid is a hydraulic hybrid drive train for both road vehicles and off road machinery. Facing the environment problems, the improvement on the efficiency of the construction machinery such as the excavator and wheel loader is highly demanded. Pdf this paper explains the basic principles of hydraulic hybrid vehicles. 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. Comparison between cvt and full hybrid engine management. Hydraulic hybrid vehicles california clean air technology. 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. Hydraulic system runs with engine shut off hydraulics. Jim obrien, of hybriddrive systems, in deerfield michigan, converted a 1968 volkswagen beetle into a hydraulic hybrid. Hydraulic hybrid our patented hydraulic launch assist or hla hydraulic hybrid system has two main parts. For trucks and buses, this can also be less expensive. What are the pros and cons of hydraulic hybrid vehicles.
Upss fleet of iconic brown delivery vans is getting a little bit greener with the addition of some new hybrid trucks. The layout displayed is for light duty vehicles such as suvs, minivans and sedans. Hybrid drives for vehicles or machines have at least two energy sources. Ppt hydraulic hybrid powerpoint presentation free to. There has been plenty of research done for manual transmissions vehicles, series and parallel electric.
An hydraulic hybrid drivetrain adds hydraulic energy storage and powerconverting components to a traditional, typically combustionenginebased, transmission in. Engines for automobile, naples, italy, september 2007 sae transactions, journal of engines 26. Fabrication of hydraulic hybrid system for four wheeler2. 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. Unlike the electrical hybrid system, it doesnt require a battery, and therefore keeps the environment free from toxic chemicals. Hydraulic accumulatormotorgenerator energy regeneration. Figure 1, consists of a hydraulic pumpmotor mounted between the engine and a mechanical transmission. 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. Fabrication of three axis pneumatic modern trailer4. 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. 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. Development of a hydromechanical hydraulic hybrid drive train. Find powerpoint presentations and slides using the power of, find free presentations research about hydraulic hybrid vehicle ppt.
Our engineers designed the hydraulichybrid drive to address the need for more efficient use of traditional energy sources. How series hydraulic hybrid vehicles work clean automotive. The hybrid power systems used in automobiles have been adapted into the construction machinery. Series hybrid in a series hydraulic hybrid, the engine is directly connected to the hydraulic pump with no direct connection to the wheels. 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. The force is almost always multiplied in the process.
There are four main modes of operation in a parallel hhv. At first, the structure of new ers that combines the advantages of an electric and hydraulic accumulator is analyzed. Hydraulic hybrid tech could provide buses, garbage trucks and other heavyduty vehicles with big improvements in fuel economy at relatively little cost. The modeled hybrid uses a hydraulic pumpmotor unit operating in parallel with an internal combustion engine. The runwise, an advanced series hydraulic hybrid drive system developed in 2005 by parker hannifin, has also shown significant results. Capable of starting an engine without external power black start capability at 40c the hydraulic starter provides the same high torque as at normal temperature the hydraulic starter can be equipped with a spark free pinion ideal for fire hazard areas each hydraulic system incorporates a hand pump for manual recharging. 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.
The hydraulic hybrid technology is a hybrid system which uses pressurized fluid as an alternative source of power to the engine. The secondary energy source in hybrid systems can be either electrical batteries, doublelayer capacitors, flywheel systems or hydraulic. Its unlikely that it will be possible to store enough pressurized hydraulic fluid to give a vehicle significant range as a standalone system. And so this pump, right here, has to run at the speed of the engine, and then over here at the wheels of the vehicle.
A less than twoyear payback when produced in high volume. Hybrid power trains use dieselelectric or turboelectric to power railway locomotives, buses, heavy goods vehicles, mobile hydraulic machinery, and ships. The schematic of the proposed hydraulic hybrid version of the delivery trucks powertrain is given in fig. However, instead of using electric components, the proposed system is a hydraulic hybrid. Optimization and control of a hydromechanical transmission. New hydraulic hybrid technology developed by epa and ford.
The hydraulic fluids represent the medium for power transmission. Like all hybrid systems, lightning hybrids ers hydraulic hybrid. 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. 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.
This video explains the benefits of hydraulic hybrid vehicle or hhv technology. Mar 21, 2018 force that is applied at one point is transmitted to another point using an incompressible fluid. The pressure is on as ups adds more hydraulic hybrids wired. By hydraulics, we mean the generation of forces and motion using hydraulic fluids. The hydraulic series hybrid uses the combustion engine to power a hydraulic pumpmotor. Introduction to how hydraulic hybrids work howstuffworks. 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. Figure 4 to the hydraulic highpressure accumulator big. 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. 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. Hydraulic hybrid vehicles are equipped with an accumulator for energy storage. During swing deceleration the braking energy generated during swing deceleration is converted into electrical energy, and then the electricity is. 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. Series hydraulic hybrid system with optimized supervisory control.
Can hydraulic hybrids compete with electric hybrids. 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. Optimal power management for a hydraulic hybrid delivery. The hydraulic components are attached to the driveshaft and assist in stopping and accelerating the vehicle. But even in a mild hybrid setup, there are knock on benefits to hydraulics. Optimal design of a powersplit transmissions for hydraulic. Apr 17, 2020 explore hybrid car with free download of seminar report and ppt in pdf and doc format. 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. That means that, flying down the highway, a hydraulic hybrid isnt much different than a regular car.
Reducing the power demand on the diesel engine, reduces fuel. The engine shaft is directly connected to a hydraulic. Hybrid car seminar report, ppt, pdf for mechanical. Hydraulic hybrid drivetrain manufacturer to distribute on east coast june, 20 by mary gannon 1 comment lightning hybrids, loveland, colo. 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.
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