Design of a model reference controller for a dualmode power. A key feature of power split hevs using pgs is the electronic continuous variable transmission ecvt which enables efficient engine operations. This is a clever gearbox that hooks the gasoline engine, generator and electric motor together. In a powersplit hybrid electric drive train there are two motors. Nicola, 336100 vicenza, italy a r t i c l e i n f o a b s t r a c t article history. A power split transmission adopts the power split technology. Handbook for chain engineering design and construction examples of calculation version 2010. When operating a powersplit hev, the pgs serve as a powersplit transmission pst that. However, its use in the prius is very different, as i hope to explain. Conceptual design and evaluation of a hybrid transmission. T1 optimal design of powersplit transmissions for hydraulic hybrid passenger vehicles.
Hydromechanical transmission hmt or powersplit archi tecture is being. Design options, cost, and electric and magnetic field levels, author stoffel, j. Phev, hybrid transmission, ecvt, ravigneaux gear set. Powersplit or hydromechanical transmissions hmt have advantages over series and parallel architectures. Transmission planning white paper is designed to help policymakers understand the basic technology, economics, and regulations that underlie the planning of todays electric transmission system. Since the birth of the automobile in 1886, cars have generally used a single power source. For terms and concepts not equipment related see the glossary. The gm volt hybrid powertrain 2 based on a output power split device was originally designed for phev application. Pdf components sizing and performance analysis of hydro. Received 24 november 2010 received in revised form 6 may 2011 accepted 14 july 2011 available online 1. The following are the major types of power transmission. Dec 15, 2008 what you are probably referring to is a 10 speed fuller transmission. Looking to the future, hybrid powertrain technologies must be enhanced to design hybrid light trucks. Ths, the core of the first commercial power split hev offered.
Battery life is a key element in the design of electrified powertrains and is. This example shows the basic architecture of a powersplit hybrid transmission. The power split device is the heart of the toyota prius. Jul 21, 2010 the power split type hybrid system transmits engine power by dividing it into the electrical unit and the mechanical unit. Hierarchical control strategy for a hybrid hydromechanical. This illustrated glossary contains definitions, photos, and graphic illustrations of equipment used in a typical electric power generation, transmission and distribution system. The power split mechanisms were studied as early as the 1970s 2. This type of drive is used when the power is to be transmitted from one shaft to other which is at a distance. Design of continuously variable power split transmission systems for. Compoundsplit configuration of powersplit hev is formed by combining two pgs. The power split device also allows the car to operate like a. Power split device and electricalmechanical power priuschat. You can use this systemlevel model to gain understanding of system performance, and to support design of the power management strategy. Electric power generation, transmission, and distribution diagram source.
We are proposing a split power continuously variable transmission spcvt operated with one mode. In addition, with many constraints imposed by physical obstructions, land owner desires, and environmental controls, the optimization process must allow for user defined controls to be handled easily. It has a broad application prospect in the aerospace and marine industry. Analysis of powersplit hev control strategies using data. The owen magnetic car, which began production in 1915 under license from walter baker, was a high power electric car where the battery was replaced by a combustion enginegenerator, but it was most notable for having an electromagnetic transmission. Modular design of hydromechanical transmissions for. The key to the problem for the power split transmission system now is how to solve the power equally distribute between the two loaded split paths. Dynamic vibration characteristic analysis for the powersplit. This is an epicyclic or planetary gear, similar to those used in automatic transmissions. A hybrid vehicle uses two or more distinct types of power, such as submarines that use diesel.
Modeling, configuration and control optimization of powersplit hybrid vehicles by jinming liu a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy mechanical engineering in the university of michigan 2007 doctoral committee. Control systems were originally designed to run the. Control of powersplit hybrid vehicles huei peng professor, department of mechanical engineering. The power and economic performance of the proposed compound power split transmission were validated by the offline simulation and compared with previous design. Walter baker of baker electric acquired the patent rights to entz drive train in 1912 and guided the owen magnetic into production in 1915 where it survived until 1922. The power split type hybrid system transmits engine power by dividing it into the electrical unit and the mechanical unit. Contact dana rexroth transmission systems for more information. The toyota prius plugin hybrid powertrain 3 was developed. Optimal design of powersplit transmissions for hydraulic.
In this paper, a holistic powersplit hybrid electric powertrain design process for lightduty trucks is introduced. Diy enthusiast you can use this material to make your own unique bookshelf. Design of power split hybrid powertrains with multiple. Powersplit hybrid electric powertrain design with two. Compound split configuration of power split hev is formed by combining two pgs. The concepts are scalable in the sense that additional modes can be used without necessarily adding complexity to the transmission. Depending on the particular design and characteristics of the cvt, these transmissions may lead to a power split path type iii flow, reference 21, in which the power bifurcates, partly going. Powersplit international is proud to offer its full line of firewood splitters and conveyors. Many of todays powersplit hybrid electric vehicles hevs utilize planetary gears pgs to connect the powertrain elements together. Fine packaging is important for the bicycle transmission design. A hybrid transmission may be in any combination of a powersplit, series or parallel configuration. The storage shelves are utilized for storing mechanical components and. In concept, this screening methodology can be applied to any power split hybrid vehicle.
Argonne national laboratory, four different powersplit. Optimal design of a powersplit transmissions for hydraulic. Powersplit hybrid electric powertrain design with two planetary gearsets for lightduty truck applications oguz h. Similar to the approach in liu and peng 2010 and zhang et al. Design of power split hybrid powertrains with multiple planetary gears and clutches by xiaowu zhang a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy mechanical engineering in the university of michigan 2015 doctoral committee. The first hybrid evaluating locomotive was designed by rail research center matrai in 1999 and built in 2000. The case study vehicle for figures 1 and 2 is a prototype electric minibus wherein the electric motor drive is characterised by a limited regenerative capability due to the design of the power electronics. What you are probably referring to is a 10 speed fuller transmission. Powersplit or hydromechanical transmissions hmt have advantages over series and parallel. Figure 1 shows an exploded view of a typical motorhub wheel. Input coupled architecture an input coupled transmission fig. Earlier versions of such devices appeared in the hydrostatic power split transmission commonly used on lawn tractors.
Pulleys are mounted on the driver and drivenfollower shafts and an endless belt are fitted tightly over. The gm volt hybrid powertrain 2 based on a output powersplit device was originally designed for phev application. Its power transmission efficiency is highest at the mechanical point mp, where the full power is transmitted to the mechanical unit. Abstracthydraulic hybrid vehicles are inherently power dense. In this study, the equation for the mp was derived for the gear ratios of a general 4node lever model.
In concept, this screening methodology can be applied to any powersplit hybrid vehicle. It is a necessary component for any true line design program. Bevel gears are a power splitting gearbox with orthogonal input and output shafts. Handbook for chain engineering design and construction. This paper presents a hydrostaticmechanical power split transmission pst solution for a 10ton wheel loader for improving the fuel economy of a wheel. Optimization of hydromechanical power split transmissions alarico macor, antonio rossetti. Figure 1 example of a power split transmission design with dual power paths. We offer the highest output of production of any splitters on the market today. The powersplit mechanisms were studied as early as the 1970s 2. The planetary gear unit pgu in the spcvt consists of two epicyclic gear trains.
Department of electrical engineering and computer science, university of michigan, ann arbor, mi 48109 usa email. Power recirculation in specific power split hybrid transmissions is analyzed by. Applications the idea of a power split transmission comes originally from tractor applications, whereas dana rexroth transmission systems has transferred this technology to additional application groups through modular design of the hvt. The majority of hevs sold are the power split type which combines the benefits of series and parallel hybrid powertrains jeff et al, 2014. Contrast this operation with a discretegear transmission. If that is the case you start out in low range switch down and accelerate through the first five gears, then when you shift out of 5th you flip the switch up to the high range position and place the shifter back into the first gear position for 6th gear and repeat the pattern. The transmission tower is a public utility structure, and is also tested for design and destruction load tests, depending on the requirements of the contacts. Optimal design of threeplanetarygear powersplit hybrid. Power split similar to the ps strong hybrid but with a larger battery and the ability to. This system divides the engine power along two paths. The operational characteristics of the hydraulic displacement machines strongly affects the transmission ef. Power split hybrids combine the best aspects of both series and parallel hybrids to create an extremely efficient system. Variable transmission with selective input split, compound split, neutral and reverse modes, u. Many resources and threads exist that describe the prius power split device.
Department of engineering and management, universita di padova, stradella s. Prius and volt powersplit hybrid vehicles with a single. Gear technologies rotation transmission, linear transmission. The prius transmission includes a special gear set that toyota call the power split device psd. Not only do electrical power transmission products, but also mechanical power transmission products need to comply with the atex directive. Loadsharing characteristics of powersplit transmission. Hybrid electric vehicles power split configuration. Development of a plugin hev based on novel compound. Abstractthe continuously variable power split transmission cvpst concept is presented in the context of an automotive application. Ths, the core of the first commercial powersplit hev offered. A hybrid transmission may be in any combination of a power split, series or parallel configuration.
Due to compact structure of powersplit transmission, it is designed to meet the operating conditions with high speed and overloaded operation. Design parameters for continuously variable powersplit transmissions using planetaries with 3 active shafts p. Analysis on compoundsplit configuration of powersplit. Mechanical power transmission hub design hubs are used to transmit mechanical power from a drive motor by coupling it to an output device such as a wheel or an arm. Design parameters for continuously variable powersplit. They correctly describe how rpms can be calculated and how torque is split. When operating a power split hev, the pgs serve as a power split transmission pst that. In this test, the vehicle accelerates, maintains the faster speed, and then decelerates back to the original speed.
Recent powersplit hevs tend to use two pgs and some of them have multiple modes to achieve better fuel economy and driving performance. Design of a model reference controller for a dualmode. The most notable of these high power, electric drive cars was the owen magnetic, which had a unique electromagnetic transmission designed by justus entz. Composite construction with three different material traction layers coated with nbr rubber partly with hamid or leather, with different structures on both surface sides, in asymmetric and symmetric styles. Configuration, sizing and control of powersplit hybrid vehicles.
The ice, generator, battery, motor, and transmission are all in series, so all drive to. In this configuration, the two pgs are combining together by connecting the sun gear of first pg with the ring gear of second pg and the two carriers, and then the engine, the output shaft and two motors mg1 and mg2 are. Despite the differences in architecture, a power split transmission can be interpreted as a fourport device with power ows between the engine, wheel and the two pumpmotors 4. The output from the power split device delivers power to the two power paths.
Our standard 5 second cycle time coupled with a vertical design enables the worker to control the quality of the wood 100%. But i did not find any that would correctly describe how the power is split. Professor huei peng, cochair professor jing sun, cochair. Dynamic vibration characteristic analysis for the power.
Hydromechanical transmissions, powersplit, design optimisation. Since one prototype is subjected to tests, the design and detailing of the tower structural is more critical activity. Reversibility of powersplit transmissions request pdf. This example shows the basic architecture of a power split hybrid transmission. Configuration, sizing and control of powersplit hybrid. Figure 1 shows an exploded view of a typical motorhub wheel assembly. The shaft is made of carbon steel or other special steel as a part of a design to. The other branch parameters can be found using the same formulas with appropriate changes. Despite the differences in architecture, a powersplit transmission can be interpreted as a fourport device with power ows between the engine, wheel and the two pumpmotors 4. Earlier versions of such devices appeared in the hydrostatic powersplit transmission commonly used on lawn tractors. Several structures have been also proposed to design threeway wilkinson power dividers.
This study is aimed to develop a hybrid transmission with six possible configurations. Comparison of different powersplit architectures using a global. A typical power generation, transmission and distribution system has these components. The key to the problem for the powersplit transmission system now is how to solve the power equally distribute between the two loaded split paths. In the simplest terms, a hybrid drivetrain is one that uses two or more power sources for propulsion. The planetary gear, along with the motor and generator, acts like a variable ratio gear.
Development of a plugin hev based on novel compound power. Power split or hydromechanical transmissions hmt have advantages over series and parallel architectures. N2 hydraulic hybrid vehicles are inherently power dense. Optimization of transmission lines is key to any design reengineering effort. The power and economic performance of the proposed compound powersplit transmission were validated by the offline simulation and compared with previous design. How to operate a split shift transmission in a 5 ton truck. Figure 1 example of a powersplit transmission design with dual power paths. Circulating mechanical power in a powersplit hybrid electric vehicle. Another interesting paper 6 discussed the design of dualfrequency unequal split nway wpd with planar isolation resistors. Components sizing and performance analysis of hydro. A powersplit transmission adopts the powersplit technology.
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