A wave disk engine or wave disk generator is a type of pistonless rotary engine being developed at Michigan State University and Warsaw Institute of Technology. The engine has a spinning disk with curved blades. Once fuel and air enter the engine, the rotation of the disk creates shockwaves that compress the mixture. When ignited, the burning mixture expands, pushing against the blades, causing them to spin. The spinning of the disk itself opens and closes intake and exhaust ports.[1] The proposed concept was called a radial internal combustion wave rotor.
Wave rotors utilize shock waves to transfer energy between a high-energy fluid to a low-energy fluid, thereby increasing both temperature and pressure of the low-energy fluid (also called pressure wave machines or pressure exchangers).
Operational principlesedit
As with all heat engines, the efficiency of a wave disk engine is governed by the temperature difference between the hot and cold sides (see Carnot's theorem). Compared to a conventional piston engine (reciprocating engine), a wave disk engine works at higher peak temperature, which theoretically makes it more efficient. The design also works without a cooling system, saving weight. Compared to turbine based systems, the rotational speed and the rotor-blade temperature of the wave disk engine is lower, which creates lower stress on materials, and consequently less demanding requirements for materials, leading to cheaper manufacturing and maintenance costs.[2]
Earlier wave rotor implementations were mainly axial flow, where the scavenging process of returning hot compressed air back into the turbine is complex. The wave-disc engine uses a radial and circumferential flow, using centrifugal forces for scavenging. Curved channels provide greater length for the same disc diameter compared to straight channels, allowing the travel times of the waves to be tuned properly.
Current statusedit
The wave-disk engine has the potential for better energy efficiency compared to conventional internal combustion engine designs and can potentially save weight. Possible applications include charging batteries in hybrid vehicles, which could reduce weight by about 1,000 pounds (450 kg).[3][1][citation needed] It promises to be up to 60% efficient, 30% lighter, and 30% cheaper to manufacture than an equivalent conventional piston engine, and to reduce emissions by 90%.[4]
Michigan State University and Warsaw Institute of Technology researchers claim to have a prototype wave-disk engine and electricity generator that could replace current backup generator technology of plug-in electric hybrid vehicles.[5] The research team is led by Associate Professor of Mechanical Engineering Norbert Müller and has been given $2.5 million funding from the United States Department of Energy's ARPA-E program. Müller's team hoped to have a vehicle-sized 25 kilowatt (33 hp) wave disc engine/generator ready by the end of 2011.[6][7] As of January 2013, the project is looking into commercialization of the technology. [8] Research continues at Columbia University in 2017 [9] and at Michigan State University .[10]
^Shockwave-Generating Wave Discs Could Replace Internal Combustion Engines Popular Science Magazine, 03.16.2011, Accessed March 2011
^"Wave Disk Engine". DOE ARPA-E. Retrieved 2011-04-25.
^"Wave disk engines to make hybrid vehicles cheaper, more efficient". ZDnet.com. 2009-11-01. Retrieved 2011-03-20.
^"Michigan State University Receives $2.5M ARPA-E Award to Build Wave Disc Engine/Generator for Series Hybrid Applications". greencarcongress.com. 2009-10-31. Retrieved 2011-03-20.
^"New engine sends shock waves through auto industry". NBC News. 2011-04-06. Retrieved 2011-04-09.
^. 2013-01-22. Archived from the original on October 10, 2013.
^Akbari, Pejman - Agoos, Ian (2017-09-19). "Two-Stage Wave Disk Engine Concept and Performance Prediction". SAE Technical Paper Series. Vol. 1. SAE International. doi:10.4271/2017-01-2046 – via DO - 10.4271/2017-01-2046.{{cite book}}: CS1 maint: multiple names: authors list (link)
^P. Parraga-Ramirez,1 M. Varney,2 E. Tarkleson,3 N. Müller. "Development of a Wave Disk Engine Experimental Facility". {{cite journal}}: Cite journal requires |journal= (help)CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
External linksedit
Numerical investigation of the Wave Disk Micro-Engine concept - International Journal of Gas Turbine, Propulsion and Power Systems December 2008, Volume 2, Number 1
Shockwave Engine: Wave Disk Engine, ARPA-E site for Michigan State University, U.S. Department of Energy
reWorking Michigan video demonstrating a working prototype on YouTube
A Review of Wave Rotor Technology and Its Applications Akbari and Nalim, Department of Mechanical Engineering, Purdue School of Engineering and Technology, Indianapolis, IN, USA. Published in Journal of Engineering for Gas Turbines and Power OCTOBER 2006, Vol. 128 / 719. Accessed March 2012
February 13, 2024
wave, disk, engine, wave, disk, engine, wave, disk, generator, type, pistonless, rotary, engine, being, developed, michigan, state, university, warsaw, institute, technology, engine, spinning, disk, with, curved, blades, once, fuel, enter, engine, rotation, di. A wave disk engine or wave disk generator is a type of pistonless rotary engine being developed at Michigan State University and Warsaw Institute of Technology The engine has a spinning disk with curved blades Once fuel and air enter the engine the rotation of the disk creates shockwaves that compress the mixture When ignited the burning mixture expands pushing against the blades causing them to spin The spinning of the disk itself opens and closes intake and exhaust ports 1 The proposed concept was called a radial internal combustion wave rotor Contents 1 Background 2 Operational principles 3 Current status 4 See also 5 References 6 External linksBackground editWave rotors utilize shock waves to transfer energy between a high energy fluid to a low energy fluid thereby increasing both temperature and pressure of the low energy fluid also called pressure wave machines or pressure exchangers Operational principles editAs with all heat engines the efficiency of a wave disk engine is governed by the temperature difference between the hot and cold sides see Carnot s theorem Compared to a conventional piston engine reciprocating engine a wave disk engine works at higher peak temperature which theoretically makes it more efficient The design also works without a cooling system saving weight Compared to turbine based systems the rotational speed and the rotor blade temperature of the wave disk engine is lower which creates lower stress on materials and consequently less demanding requirements for materials leading to cheaper manufacturing and maintenance costs 2 Earlier wave rotor implementations were mainly axial flow where the scavenging process of returning hot compressed air back into the turbine is complex The wave disc engine uses a radial and circumferential flow using centrifugal forces for scavenging Curved channels provide greater length for the same disc diameter compared to straight channels allowing the travel times of the waves to be tuned properly Current status editThe wave disk engine has the potential for better energy efficiency compared to conventional internal combustion engine designs and can potentially save weight Possible applications include charging batteries in hybrid vehicles which could reduce weight by about 1 000 pounds 450 kg 3 1 citation needed It promises to be up to 60 efficient 30 lighter and 30 cheaper to manufacture than an equivalent conventional piston engine and to reduce emissions by 90 4 Michigan State University and Warsaw Institute of Technology researchers claim to have a prototype wave disk engine and electricity generator that could replace current backup generator technology of plug in electric hybrid vehicles 5 The research team is led by Associate Professor of Mechanical Engineering Norbert Muller and has been given 2 5 million funding from the United States Department of Energy s ARPA E program Muller s team hoped to have a vehicle sized 25 kilowatt 33 hp wave disc engine generator ready by the end of 2011 6 7 As of January 2013 the project is looking into commercialization of the technology 8 Research continues at Columbia University in 2017 9 and at Michigan State University 10 See also editTurboshaftReferences edit a b Shock wave puts hybrid engines in a spin Helen Knight New Scientist 15 March 2011 Accessed March 2011 Radial flow wave rotro concepts unconventional designs and applications PDF egr msu edu 2004 11 13 Retrieved 2011 03 20 Shockwave Generating Wave Discs Could Replace Internal Combustion Engines Popular Science Magazine 03 16 2011 Accessed March 2011 Wave Disk Engine DOE ARPA E Retrieved 2011 04 25 Wave disk engines to make hybrid vehicles cheaper more efficient ZDnet com 2009 11 01 Retrieved 2011 03 20 Michigan State University Receives 2 5M ARPA E Award to Build Wave Disc Engine Generator for Series Hybrid Applications greencarcongress com 2009 10 31 Retrieved 2011 03 20 New engine sends shock waves through auto industry NBC News 2011 04 06 Retrieved 2011 04 09 ARPA E Awardees Selected for NSF Innovation Corps Program 2013 01 22 Archived from the original on October 10 2013 Akbari Pejman Agoos Ian 2017 09 19 Two Stage Wave Disk Engine Concept and Performance Prediction SAE Technical Paper Series Vol 1 SAE International doi 10 4271 2017 01 2046 via DO 10 4271 2017 01 2046 a href Template Cite book html title Template Cite book cite book a CS1 maint multiple names authors list link P Parraga Ramirez 1 M Varney 2 E Tarkleson 3 N Muller Development of a Wave Disk Engine Experimental Facility a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help CS1 maint multiple names authors list link CS1 maint numeric names authors list link External links editNumerical investigation of the Wave Disk Micro Engine concept International Journal of Gas Turbine Propulsion and Power Systems December 2008 Volume 2 Number 1 Shockwave Engine Wave Disk Engine ARPA E site for Michigan State University U S Department of Energy Directory Wave Disk Engine PESWiki Faculty conversations Norbert Muller on YouTube reWorking Michigan video demonstrating a working prototype on YouTube A Review of Wave Rotor Technology and Its Applications Akbari and Nalim Department of Mechanical Engineering Purdue School of Engineering and Technology Indianapolis IN USA Published in Journal of Engineering for Gas Turbines and Power OCTOBER 2006 Vol 128 719 Accessed March 2012 Retrieved from https en wikipedia org w index php title Wave disk engine amp oldid 1189520753, wikipedia, wiki, book, books, library,
