scania climatic wind tunnel
DESCRIPTION
Presentation held at Scania Capital Markets Day, 19 September 2013 by Christer Ramdén, Head of Vehicle Performance TestingTRANSCRIPT
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Climatic Wind Tunnel
Christer RamdénChrister Ramdén Head of Vehicle Performance Testing
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Scania Technical CentreEverything in one place
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Scania’s R&D focus
New segments GrowingFuel efficiency and uptime
Environmental performance
New segments and applications
Growing volume in Asia, Africa, Eurasia
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Climatic Wind Tunnel
Unique facilityq y
Climate testing for all markets/weather conditions – warm, cold, rain, humidity
R titi t ti Repetitive testing conditions
Fuel efficiency uptime Fuel efficiency, uptime, driver environment, emissions
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Facility overview
Nozzle size 13 m² Bus and truck testingWind speed 0-100 km/hDyno performance ± 800 kW, ± 120 kNTemperature -35ºC / +50ºCHumidity 5-95% RH
Rain and soiling (UV-chemical) Aeroacoustic testing Snow and solar simulation Emission analysis
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Operating conditions – Rain
Water intrusion in air intake Wiper functionWiper function ACC performance during rain, humidity Mist removal
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Operating conditions - Snow
Snow clogging on front lids Snow intrusion in air intakeSnow intrusion in air intake Snow clogging of filters Wiper and defroster functions
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Operating conditions – Sun
Radiation intensity: 400-1,100 W/m² Radiation of front, roof and cab sidesRadiation of front, roof and cab sides Cloud and tunnel functions Testing of ACC performance in trucks
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Soiling test
0.5% fluorescent added to rain water Contamination of sides, door handlesContamination of sides, door handles Windscreen and side window visibility Soiling of exterior driving mirrors
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Aero acoustic testing
Wind noise can be measured during stable and repeatable Wind noise can be measured during stable and repeatable conditions, also with a lateral wind flow.
Requirement: Background noise level ≤76 dB(A) at 90 km/h. The acoustic treatment solution includes circuit wall liningThe acoustic treatment solution includes circuit wall lining, turning vanes and baffles, and test section lining.
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Application testing
Trucks, buses and tractors Variable wheel base settingVariable wheel base setting FCD for improved air flow Supply of different fuels
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Advantages of Climatic Wind Tunnel
Higher quality in new productsg q y p
Shorter project lead times
Better fuel economy and lower Better fuel economy and lowerenvironmental impact
Improved driver environmentd b tt f tand better safety