Design optimization of a hydraulic flywheel accumulator for a. This paper proposed a parameter matching method based on the energy storage unit, the accumulator in the parallel hydraulic hybrid excavator phhe. New hydraulic hybrid technology developed by epa and ford. Recent trends hydraulic hybrid vehicles ankush menat 2.
The runwise, an advanced series hydraulic hybrid drive system developed in 2005 by parker hannifin, has also shown significant results. A less than twoyear payback when produced in high volume. Series hydraulic hybrid system with optimized supervisory control. Energy efficiency comparison between hydraulic hybrid. The engine is also turbocharged to maximize the benefits of downsizing. Pdf hydraulic hybrid vehicle configurations and comparison.
The output of the transmission and a second hydraulic. 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 hybrid drivetrain with a hydraulic continuously variable transmission cvt is modeled to include efficiency information of the engine and hydraulic components. Hhvs, like all hybrid vehicles, use two sources of power to drive the wheels. Hybrid vehicle drive trains transmit power to the driving wheels for hybrid vehicles.
Most passenger car hybrids have been electricinternal combustion engine models, but other hybrid technologies using hydraulic pumpmotors, flywheels, and. Hybrid power trains use dieselelectric or turboelectric to power railway locomotives, buses, heavy goods vehicles, mobile hydraulic machinery, and ships. Other benefits of hydraulic hybrid systems include the use of lesscostly. T1 design optimization of a hydraulic flywheel accumulator for a hydraulic hybrid vehicle. A parameter matching method of the parallel hydraulic hybrid. 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. Introduction to how hydraulic hybrids work howstuffworks. A powersplit architecture similar to the toyota hybrid system in a prius was chosen 9.
Optimal design of powersplit transmissions for hydraulic hybrid passenger vehicles kai loon cheong, perry y. Are hydraulic hybrid vehicles the future of driving. 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. The basic models of hydraulic hybrid vehicles are shown and explained. Remember, the hydraulic hybrid system gets its power through regenerative braking. Jim obrien, of hybriddrive systems, in deerfield michigan, converted a 1968 volkswagen beetle into a hydraulic 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.
It took the 20ton series phhe as the example and displayed the parameter matching course of the main components. 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. A hybrid hydraulic turbocharger system for internal combustion engines. In a hydraulic hybrid, pressurized fluid is used as secondary source of power. The hydraulic components are attached to the driveshaft and assist in stopping and accelerating the vehicle. The technology uses hydraulic hardware to augment the conventional powertrain engine and. 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. 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. 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. However, instead of using electric components, the proposed system is a hydraulic hybrid. 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.
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. Energy efficiency comparison between hydraulic hybrid and. Powersplit or hydromechanical transmissions hmt have advantages over series and parallel architectures. This purely hydraulic transmission allows optimal engine management yet creates a less efficient power transmission path than a mechanical transmission. 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. 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. Explore hybrid car with free download of seminar report and ppt in pdf and doc format. 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. Clean automotive technology transportation and air quality. 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.
Hydraulic hybrid and conventional parcel delivery vehicles. That means that, flying down the highway, a hydraulic hybrid isnt much different than a regular car. During regeneration the vehicles kinetic energy that is normally lost during braking is captured and used to drive the pumpmotor as a pump. Pdf this paper explains the basic principles of hydraulic hybrid vehicles. Design and analysis of hydraulic hybrid passenger vehicles. Jan, 2014 promising efficiency, peak performance and low costs, the hydraulic hybrid system seems to be where the future of motoring lies. Hybrid car seminar report, ppt, pdf for mechanical. If you need captions, please click the cc button on the player to turn them on. Development of a hydromechanical hydraulic hybrid drive train. Both engines extract power from the piston motion using a linear hydraulic. The hydraulic hybrid is one potential solution for rising oil prices. Volkswagen jetta hybrid 20 workshop manual pdf download.
Pdf n this paper three basic configurations of hydraulic hybrid vehicle are explained. Hydraulic and pneumatic hybrid market update oem offhighway. For example, a hybrid may receive its energy by burning petroleum, but switch between an electric motor and a combustion engine. Chase abstract hydraulic hybrid vehicles are inherently power dense. Hydraulic hybrid and conventional parcel delivery vehicles measured laboratory fuel economy on targeted drive cycles. The turbocharger system includes a hydraulic pump motor in mechanical communication with said engine drive shaft. This allows them to be driven whilst the engine is off. Us20120180482a1 hydraulic turbinepump hybrid turbocharger. A hybrid vehicle has multiple forms of motive power.
This is done by using a displacement pump 1 to pump hydraulic fluid into an accumulator2. 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. Hydraulic hybrid vehicles hhvs are mainly operated using engines. Learn how a hydraulic hybrid differs from a gaselectric hybrid. Specalog for 336e h hydraulic excavator, aehq690401. Pdf hydraulic hybrid vehicle configurations and comparison with. A hybrid turbocharger unit includes an engine exhaust gas turbine driving a compressor, a hydraulic turbine and a hydraulic pump, all mounted on said. 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. 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. Our patented hydraulic launch assist or hla hydraulic hybrid system has two main parts.
This research project compares laboratorymeasured fuel economy of a mediumduty diesel powered hydraulic hybrid. This hydraulic hybrid demonstrated fuel savings resulting from combining a full series hydraulic hybrid system with a diesel engine. In a hybrid hydraulic vehicle, the hydraulic accumulator is used as the secondary power source in addition to the engine to propel the vehicle. 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. Hybrid hydraulic drives kd solutions kinetics drive.
Our engineers designed the hydraulic hybrid drive to address the need for more efficient use of traditional energy sources. In a series hydraulic hybrid vehicle, the pumpmotor directly connects to the driveshaft, or the inwheel motors provide driving torque directly to the wheel. Optimal design of a powersplit transmissions for hydraulic. The working condition, system structure, and control strategy of the excavator were all considered. Modeling and control of hydraulic linear and freepiston engines. 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. Figure 1, consists of a hydraulic pumpmotor mounted between the engine and a mechanical transmission. The prototype was installed in a 2003 ford expedition suv with the following results. In a parallel hydraulic hybrid vehicle hhv, the engine still provides power to the wheels through a standard 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. Pdf model of a hydraulic hybrid vehicle with regenerative. 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. 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. Optimal design of powersplit transmissions for hydraulic.
Development of a hydromechanical hydraulic hybrid drive. Explore hydraulic hybrid vehicle with free download of seminar report and ppt in pdf and doc format. Hydraulic hybrid vehicles california clean air technology. 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. Lammert, jonathan burton, petr sindler, and adam duran. View and download volkswagen jetta hybrid 20 workshop manual online. 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. This video explains the benefits of hydraulic hybrid vehicle or hhv technology. Hydraulic hybrid vehicle seminar report, ppt, pdf for.
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. Obrien said, we are not aware of anything else like it. Read on to learn exactly how hydraulic hybrids work, how they compare to electric hybrids and how theyre being. Hydraulic hybrid vehicles are equipped with an accumulator for energy storage. A new series hydraulic hybrid vehicle model with a regenerative.
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. The three most common categories of hydraulic hybrid vehicle. 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. 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.