scania climatic wind tunnel
DESCRIPTION
Presentation held at Scania Capital Markets Day, 19 September 2013 by Christer Ramdén, Head of Vehicle Performance TestingTRANSCRIPT
Climatic Wind Tunnel
Christer RamdénChrister Ramdén Head of Vehicle Performance Testing
Scania Technical CentreEverything in one place
Scania’s R&D focus
New segments GrowingFuel efficiency and uptime
Environmental performance
New segments and applications
Growing volume in Asia, Africa, Eurasia
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
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
Operating conditions – Rain
Water intrusion in air intake Wiper functionWiper function ACC performance during rain, humidity Mist removal
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
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
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
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.
Application testing
Trucks, buses and tractors Variable wheel base settingVariable wheel base setting FCD for improved air flow Supply of different fuels
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