Development of a hydromechanical hydraulic hybrid drive train. This research project compares laboratorymeasured fuel economy of a mediumduty diesel powered hydraulic hybrid. 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. It took the 20ton series phhe as the example and displayed the parameter matching course of the main components.
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. A hybrid turbocharger unit includes an engine exhaust gas turbine driving a compressor, a hydraulic turbine and a hydraulic pump, all mounted on said. 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. Figure 1, consists of a hydraulic pumpmotor mounted between the engine and a mechanical transmission. Although not shown, the hydraulic energy stored in the accumulator can be used to power a smaller digital displacement hydraulic motor driving the engine accessories. Hydraulic hybrid vehicle seminar report, ppt, pdf for. A parameter matching method of the parallel hydraulic hybrid.
Hydraulic hybrid vehicles california clean air technology. In a series hybrid system, the engine is directly coupled to a hydraulic pump and the wheels are coupled to one or more hydraulic pumpmotors. Explore hybrid car with free download of seminar report and ppt in pdf and doc format. Most passenger car hybrids have been electricinternal combustion engine models, but other hybrid technologies using hydraulic pumpmotors, flywheels, and. 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. The three most common categories of hydraulic hybrid vehicle. The hydraulic components are attached to the driveshaft and assist in stopping and accelerating the vehicle. A hybrid drivetrain with a hydraulic continuously variable transmission cvt is modeled to include efficiency information of the engine and hydraulic components. In a hybrid hydraulic vehicle, the hydraulic accumulator is used as the secondary power source in addition to the engine to propel the vehicle. Hybrid power trains use dieselelectric or turboelectric to power railway locomotives, buses, heavy goods vehicles, mobile hydraulic machinery, and ships. A hybrid vehicle has multiple forms of motive power. A new series hydraulic hybrid vehicle model with a regenerative.
Optimal design of a powersplit transmissions for hydraulic. 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. Hydraulic hybrid and conventional parcel delivery vehicles. The output of the transmission and a second hydraulic.
Hydraulic hybrid vehicles are equipped with an accumulator for energy storage. Hydraulic hybrid vehicles alternative fuels the goal of the clean automotive technology program is to research, evaluate, and develop advanced vehicle engine and drivetrain technologies that help increase fuel efficiency, reduce regulated criteria emissions such as nitrogen oxides nox and particulate matter pm, and cut greenhouse gas emissions. The engine is also turbocharged to maximize the benefits of downsizing. 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. Our patented hydraulic launch assist or hla hydraulic hybrid system has two main parts.
As part of the countys overall strategy to reduce emissions and fuel use, it recently added 29 new hydraulic hybrid refuse vehicles to its fleet, bringing its total to 64. Jan, 2014 promising efficiency, peak performance and low costs, the hydraulic hybrid system seems to be where the future of motoring lies. View and download volkswagen jetta hybrid 20 workshop manual online. However, instead of using electric components, the proposed system is a hydraulic hybrid. Depending on the nature of the nonelectric energy source, we can distinguish between combustion ice, fuel cell, hydraulic or pneumatic power, and human power. Optimal design of powersplit transmissions for 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. Remember, the hydraulic hybrid system gets its power through regenerative braking. Chase abstract hydraulic hybrid vehicles are inherently power dense. 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. Lightning hybrids system is best suited for applications in which there are at least four or five braking events per mile, and for vehicles with a gross vehicle. Explore hydraulic hybrid vehicle with free download of seminar report and ppt in pdf and doc format. A hybrid hydraulic turbocharger system for internal combustion engines. Engineering hydraulic hybrid vehicles using stop to power go a global cleantech opportunity 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.
Hydraulic and pneumatic hybrid market update oem offhighway. Hydraulic hybrid vehicle hhv in a series hydraulic hybrid system, the conventional transmission and driveline are replaced by the hydraulic hybrid powertrain, and energy is transferred from the engine to the drive wheels through fluid power. 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. Us20120180482a1 hydraulic turbinepump hybrid turbocharger. Our engineers designed the hydraulic hybrid drive to address the need for more efficient use of traditional energy sources. Development of a hydromechanical hydraulic hybrid drive. In a parallel hydraulic hybrid vehicle hhv, the engine still provides power to the wheels through a standard transmission. This video explains the benefits of hydraulic hybrid vehicle or hhv technology. Sep, 2004 september, 2004vehicles with the potential for dramatic improvements in fuel efficiency, performance, and costeffectiveness due to new advancements in hydraulic hybrid technology have been. Introduction to how hydraulic hybrids work howstuffworks. Read on to learn exactly how hydraulic hybrids work, how they compare to electric hybrids and how theyre being. The runwise, an advanced series hydraulic hybrid drive system developed in 2005 by parker hannifin, has also shown significant results. The working condition, system structure, and control strategy of the excavator were all considered.
Pdf this paper explains the basic principles of hydraulic hybrid vehicles. Jim obrien, of hybriddrive systems, in deerfield michigan, converted a 1968 volkswagen beetle into a hydraulic hybrid. Hybrid hydraulic drives kd solutions kinetics drive. If you need captions, please click the cc button on the player to turn them on.
Learn how a hydraulic hybrid differs from a gaselectric hybrid. Pdf hydraulic hybrid vehicle configurations and comparison. Hhvs, like all hybrid vehicles, use two sources of power to drive the wheels. The cat adaptive control system acs valve optimizes performance by intelligently managing restrictions and lows to control machine motion, which means your operators will have the power and precision they need and expect. Pdf n this paper three basic configurations of hydraulic hybrid vehicle are explained. This allows them to be driven whilst the engine is off. Kinetics drive solutions hydraulic hybrid drives hhds replace conventional vehicle transmissions with a power distribution unit that decouples the wheels from the engine for superior engine management. Design and analysis of hydraulic hybrid passenger vehicles. This hydraulic hybrid demonstrated fuel savings resulting from combining a full series hydraulic hybrid system with a diesel engine. Recent trends hydraulic hybrid vehicles ankush menat 2. A less than twoyear payback when produced in high volume. During regeneration the vehicles kinetic energy that is normally lost during braking is captured and used to drive the pumpmotor as a pump. The hydraulic hybrid vehicle is an important type of the hybrid vehicle, which takes the internalcombustion engine as a power source, the hydraulic fluid as energy transfer medium, and the.
That means that, flying down the highway, a hydraulic hybrid isnt much different than a regular car. The technology uses hydraulic hardware to augment the conventional powertrain engine and. With 530 hybrid vehicles ranging from lightduty sedans to refuse trucks and transit buses, miamidade county boasts the third largest municipal hybrid fleet in the nation. 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. This is done by using a displacement pump 1 to pump hydraulic fluid into an accumulator2. Optimal design of powersplit transmissions for hydraulic hybrid passenger vehicles kai loon cheong, perry y. Hybrid car seminar report, ppt, pdf for mechanical. Hybrid vehicle drive trains transmit power to the driving wheels for hybrid vehicles. In a hydraulic hybrid, pressurized fluid is used as secondary source of power.
This purely hydraulic transmission allows optimal engine management yet creates a less efficient power transmission path than a mechanical transmission. Recently, two hydraulic hybrid architectures with dc actuation including a novel architecture, were investigated in simulation and showed that addition of energy storage capability to the system. Are hydraulic hybrid vehicles the future of driving. Jul 24, 2015 lightning hybrids developed a hydraulic hybrid system which collects and stores energy during stops that is then used for vehicle acceleration in place of, or to assist the engine.
In a series hydraulic hybrid vehicle, the pumpmotor directly connects to the driveshaft, or the inwheel motors provide driving torque directly to the wheel. The turbocharger system includes a hydraulic pump motor in mechanical communication with said engine drive shaft. T1 design optimization of a hydraulic flywheel accumulator for a hydraulic hybrid vehicle. A powersplit architecture similar to the toyota hybrid system in a prius was chosen 9. Energy efficiency comparison between hydraulic hybrid. A hybrid system, consisting of an internal combustion engine 1 with addedon andor integrated hydraulic pumps 2 to supply consumers 5 andor the drive unit 12, at least one engine control unit 3 for electronic engine regulation andor fuelinjection regulation, at least one hydraulic control unit 4 to control at least one hydraulic consumer 5, at least one pressure.
Other benefits of hydraulic hybrid systems include the use of lesscostly. Pdf hydraulic hybrid vehicle configurations and comparison with. Energy efficiency comparison between hydraulic hybrid and. Both engines extract power from the piston motion using a linear hydraulic. Lammert, jonathan burton, petr sindler, and adam duran. Clean automotive technology transportation and air quality. This paper proposed a parameter matching method based on the energy storage unit, the accumulator in the parallel hydraulic hybrid excavator phhe. Pdf model of a hydraulic hybrid vehicle with regenerative. But in traffic, particularly stop and go traffic, a series hydraulic hybrid can shut its engine off and use hydraulic power alone. The epa has developed a freepiston engine fpe and a hydraulic linear engine hle for application as hydraulic power plants in a hydraulic hybrid vehicle. Hydraulic hybrid vehicles hhvs are mainly operated using engines. Design optimization of a hydraulic flywheel accumulator for a. Powersplit or hydromechanical transmissions hmt have advantages over series and parallel architectures.
Recently, two hydraulic hybrid architectures with dc actuation including a novel architecture, were investigated in simulation and showed that addition of energy storage capability to. Volkswagen jetta hybrid 20 workshop manual pdf download. New hydraulic hybrid technology developed by epa and ford. 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. Specalog for 336e h hydraulic excavator, aehq690401. Modeling and control of hydraulic linear and freepiston engines. Obrien said, we are not aware of anything else like it.
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. Series hydraulic hybrid system with optimized supervisory control. The basic models of hydraulic hybrid vehicles are shown and explained. The hydraulic hybrid is one potential solution for rising oil prices. Hydraulic hybrid and conventional parcel delivery vehicles measured laboratory fuel economy on targeted drive cycles. The prototype was installed in a 2003 ford expedition suv with the following results.
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