EU-project: CityHush Objectives and expected results Brussels, November 23, 2011 Presented by Martin Höjer (ACL, Tyréns)
CityHush selected project data CityHush acronym for Acoustically Green Road Vehicles and City Areas Duration: January 2010 December 2012 Total budget: 5 MEUR EC-contribution: 3,5 MEUR Stockholm september 30 2
Partners 13 partners in 7 countries Partner Nr Partner full name Short name 1 Acoustic Control AB ACL SE 2 Accon ACC DE 3 Alfa Products & Technologies APT BE 4 Goodyear Luxembourg SA GOOD LU 5 Head Acoustics HAC DE 6 Kungliga Tekniska Högskolan KTH SE 7 NCC Roads NCC SE 8 City of Stockholm SEP SE 9 Netherlands Organisation for Applied Scientific Research TNO NL 10 Göteborgs Kommun - Trafikkontoret Miljöförvaltningen TPTA SE 11 TT&E Consultants TTE GR 12 University of Cambridge UCAM UK 13 Promotion of Operational Links with Integrated Services POLIS BE Country Stockholm september 30 3
Statements in the Call Noise reduction within urban areas by 10-20 db(a) units should be achieved New passenger car CO2 emission should be reduced by 40-50% and for heavy duty vehicles by 10-30% Stockholm september 30 4
A way of reaching the goal Creating a zone where only electric/hybrid vehicles are allowed. This will reduce noise inside the zone with 10-15 db(a). Toll-gate Hybrid Car Hybrid Car Q-Zone 10-15 db(a) less noise Hybrid Car Stockholm september 30 5
The concept of Q-Zones WP1 Stockholm september 30 6
Hybrid cars only is allowed Overview over the entire quiet zone Typically 12-14 db(a) reduction 6-7 db(a) from quiet vehicles Typcially 12-14 db(a) reduction 6-7 db(a) from reduced traffic Increase of 0-3 db(a) around the area
0 10 20 30 40 50 60 70 80 90 100 Noise reduction in db(a) units Mixing normal and quiet vehicles (assuming that quiet vehicles are 10 db(a) less noisy than normal vehicles) 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 Share of quiet vehicles % Noise reduction db(a) units 10% 0.4 db(a) 30% 1.4 db(a) 50% 2.6 db(a) 90% 7.2 db(a) 100% 10 db(a) Percentage quiet vehicles Stockholm september 30 8
The concept of Q-Zones and embedded parks Stockholm september 30 9
Noise rating models and annoyance WP2 Stockholm september 30 10
Hot-Spot analysis a map of noise problems Stockholm september 30 11
Different house types are handled The scoring system takes the number of accommodation into account. Stockholm september 30 12
Sound reduction for facades depends on the age of the building 1920 1950 1970 2000 Stockholm september 30 13
Tyre-Road noise WP3 & 4 Stockholm september 30 14
Typical results for standard vehicle Stockholm september 30 15
Sound Pressure Level (dba) Typical results for electrical vehicle 80 75 70 65 60 Measured data Total noise (curve fit) Tyre/road noise (estimated) Driveline noise (estimated) sum (estimated) Fiat 500 EVAdapt (7,5m) 55 50 45 40 35 10 Log speed (km/h) 100 Stockholm september 30 16
Spcifications for quiet vehicles -Noise classes Electric hybrid vehicle Stockholm september 30 17
Low noise tire concept design development ACL Further development and evaluation of the DualQ tyre with CPX-measurements and with electric or hybrid vehicles Expected results: 5-8 db(a) noise reduction (Other performance parameters needs to be studied) Goodyear develops improved tyre designs regarding exterior noise. Expected results: 2-5dB(A) noise reduction 18
Road roughness - texture Development of a low noise road surface for inner city use. Optimized texture instead of a porous pavement. Expected results: 2-4 db(a) noise reduction with longer lifetime Stockholm september 30 20
Evaluation of roadsurfaces and low noise tires using the single wheel trailer Validation of road pavements and quiet tyres is performed using a single wheel trailer. Measurements according to the CPX-method 21
Reduction of structure borne noise Stockholm september 30 22
WP5 Validation Parks embedded in Q-Zones Göteborg Q-Zones Stockholm Noise reduction for the entire vehicle Q-zones Bristol Noise score analysis Birmingham Reduction of low frequency noise Antwerp Reduction of low frequency noise Brussels Q-zones Essen Q-zones Bratislava Noise score rating models for Q-Zones and embedded parks Athens Stockholm september 30 23