Replacement exhaust systems

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Presentation transcript:

Replacement exhaust systems Informal document GRB-55-11 (55th GRB, 7-9 February 2012, agenda item 4) ASEP Test results Replacement exhaust systems CLEPA 07 FEB 2012 Luk Dedene / Rudi Valgaeren

Overview 7 vehicles tested according to ASEP procedure Diesel and petrol Vehicle A PMR = 44.8 Vehicle B PMR = 52.9 Vehicle C PMR = 72.9 Vehicle D PMR = 52.3 Vehicle E PMR = 46.6 Vehicle F PMR = 53.4 Vehicle G PMR = 51.4

L urban [dBA] Original Replacement Vehicle A 69.0 69.3 Vehicle B 72.5 72.3 Vehicle C 68.7 Vehicle D 70.1 70.2 Vehicle E 68.2 68.5 Vehicle F 69.5 70.3 Vehicle G 71.2 71.0

ASEP: Vehicle A Original Replacement Lwot = 68.9dBA at 2917rpm Slope = 4.9 dBA/1000rpm (Y=1) Lwot = 69.2dBA at 2895rpm Slope = 5.0 dBA/1000rpm (Y=1)

ASEP: Vehicle B Original Replacement Lwot = 72.8dBA at 2325rpm Slope = 5.0dBA/1000rpm (Y=1) Lwot = 73.0dBA at 2343rpm Slope = 5.0dBA/1000rpm (Y=1) Lwot = 71.6dBA at 1538rpm Slope = 5.0dBA/1000rpm (Y=1) Lwot = 71.1dBA at 1530rpm Slope = 5.0dBA/1000rpm (Y=1)

ASEP: Vehicle C Original Replacement

ASEP: Vehicle D Original Replacement

ASEP: Vehicle E Original Replacement

ASEP: Vehicle F Original Replacement Lwot = 72.0dBA at 4217 rpm Slope = 5.0dBA/1000rpm (Y=1) Lwot = 73.4dBA at 4155 rpm Slope = 4.6 dBA/1000rpm (Y=1) Lwot = 68.5dBA at 2722 rpm Slope = 5.0dBA/1000rpm (Y=1) Lwot = 69.7dBA at 2706rpm Slope = 5.0dBA/1000rpm (Y=1)

ASEP: Vehicle G Original Replacement

THANK YOU 11