| 词条 | Dynamo 7.0 | |||||||||||||||||||||
| 释义 |
| name = DTU Dynamo 7.0 | image = DTU Dynamo 7.0 at EuroSpeedway Lausitz 1.jpg | caption = | manufacturer = | aka = | production = | model_years = | assembly = Kongens Lyngby, Denmark | predecessor = Dynamo 6.0 | successor = Dynamo 8.0 | class = | body_style = | layout = | platform = | engine = 49 cm3 single-cylinder 3 valve SOHC | transmission = 2-speed manual | wheelbase = | length = | width = | height = | weight = approx. 120 kg | related = | designer = | sp = uk }} The Dynamo 7.0 is the seventh generation car run by DTU Roadrunners to compete in the Urban Concept class in the Shell Eco-marathon Europe. The car is developed by students at the Technical University of Denmark with the single purpose of achieving the best fuel economy as possible. The Dynamo 7.0 features a 49 cm3 moped engine run on second generation second generation bioethanol. In the 2011 Shell Eco-marathon Europe the Dynamo 7.0 achieved a record of 509.4 km/L (gasoline equivalent) at the EuroSpeedway Lausitz racetrack, placing it first in the category of Urban Concept cars with internal combustion engines. Design and technologyEngine and drive trainA 49 cc four-stroke spark ignited engine originating from a high-end moped is powering the Dynamo 7.0. The engine was in its originally application running on gasoline but has been modified to run on ethanol as a green alternative.[1][2] For this purpose the engine control unit (ECU) had to be replaced by a custom programmable ECU developed by students participating in the project. The programmable ECU enables user control of the air–fuel ratio. During a race the engine is run with a lean mixture to optimize fuel efficiency resulting in a thermal efficiency of approximately 30 percent.[3]
The car has only one wheel drive, meaning the engine transfers the torque to the rear right wheel. Torque is transferred to the wheel through a 2-speed manual transmission with an automatic dry clutch.[4] Body and chassisThe car is made with separate chassis and bodywork. The aluminium chassis features double wishbone-style suspension. The suspension has no dampers and only act as linkage between the vehicle and the wheel enabling adjustments of ride height, camber and toe.[5] The body is made from carbon-fiber-reinforced polymer. It carries no structural loads and acts only as a housing guiding the air around the car. The aerodynamics of an eco-marathon challenger is a key parameter to optimize fuel efficiency. Therefore a spoiler was installed subsequently to improve the initial design which suffered from a somewhat high drag coefficient. The body is equipped with LED indicator, head- and rear light. The car is capable of carrying only the driver together with a suitcase-like object stored in the engine compartment. Race resultsDuring the Shell Eco-marathon 2011 at EuroSpeedway Lausitz a total of five valid attempts were made.[6] In each attempts improvement in fuel economy was made. This was achieved by optimizing several settings in the car including gear-ratio, fuel amount regulation, clutch engagement and aerodynamics.[7]
References1. ^{{cite web |url = http://www.ecocar.mek.dtu.dk/Dynamo/Engine.aspx |title = Ecocar.dk: Engine description |publisher = Technical University of Denmark |accessdate = 2012-04-28 |deadurl = yes |archiveurl = https://archive.is/20121217234034/http://www.ecocar.mek.dtu.dk/Dynamo/Engine.aspx |archivedate = 2012-12-17 |df = }} 2. ^{{cite web |url = http://www.inbicon.com/About_inbicon/News/Data/Pages/Worlds_top_eco-car_wins_using_ethanol_Inbicon.aspx |title = Worlds top eco-car wins using ethanol |publisher = Inbicon |accessdate = 2012-04-28 |deadurl = yes |archiveurl = https://web.archive.org/web/20111127084747/http://www.inbicon.com/About_inbicon/News/Data/Pages/Worlds_top_eco-car_wins_using_ethanol_Inbicon.aspx |archivedate = 2011-11-27 |df = }} 3. ^{{cite web | url=http://ing.dk/artikel/119235-dtu-rykker-paa-bioethanol-til-dette-aars-shell-eco-marathon | title= DTU rykker på bioethanol til dette års Shell Eco-marathon (English: DTU goes for bioethanol for this year's version of the Shell Eco-marathon) | publisher= Ingeniøren (English: The News Magazine "The Engineer") | accessdate=2012-04-28}} 4. ^{{cite web | url=https://www.youtube.com/watch?v=ChZkcKBmTmw&hd=1 | title=DTU Roadrunners' økobil kørte længst på literen (English: DTU Roadrunners eco-car drove farthest to the litre) | publisher= DTUbroadcast | accessdate=2012-04-28}} 5. ^{{cite web |url = http://www.ecocar.mek.dtu.dk/Innovator/Steering%20and%20suspension.aspx |title = Ecocar.dk: Steering and suspension |publisher = Technical University of Denmark |accessdate = 2012-04-28 |deadurl = yes |archiveurl = https://archive.is/20121217233237/http://www.ecocar.mek.dtu.dk/Innovator/Steering%20and%20suspension.aspx |archivedate = 2012-12-17 |df = }} 6. ^1 {{cite web |url=http://www-static.shell.com/static/ecomarathon/downloads/2011/europe/results/Final_results_Europe_2011_UrbanConcept_Internal_Combustion_Engine.pdf |title=Shell Eco-marathon Europe 2011 Final results : UrbanConcept Internal Combustion Engine |publisher=Royal Dutch Shell |accessdate=2012-04-24 |deadurl=yes |archiveurl=https://web.archive.org/web/20120927113814/http://www-static.shell.com/static/ecomarathon/downloads/2011/europe/results/Final_results_Europe_2011_UrbanConcept_Internal_Combustion_Engine.pdf |archivedate=2012-09-27 |df= }} 7. ^{{cite web |url = http://www.ecocar.mek.dtu.dk/Achievements/2011.aspx |title = Ecocar.dk: Achievements 2011 |publisher = Technical University of Denmark |accessdate = 2012-04-28 |deadurl = yes |archiveurl = https://archive.is/20121217225552/http://www.ecocar.mek.dtu.dk/Achievements/2011.aspx |archivedate = 2012-12-17 |df = }} External links
2 : Shell Eco-marathon challengers|Concept cars |
|||||||||||||||||||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。