5.1.1. This test is applicable to vehicle categories L3, L4 and L5. 5.1.2. Test conditions The inertia mass of the inertia dynamometer shall be determined in accordance with the requirements laid down in paragraphs 4.2.1., 4.2.1.1. and 4.2.1.2. of Annex 14. The rotational speed of the dynamometer shall correspond to the linear test speed of the vehicle based on the mean of the largest and smallest dynamic rolling radius of the tyres authorized for that vehicle. 5.1.3. Front disc 5.1.3.1. Test programme 5.1.3.1.1. Burnishing According to Table A14/5.1.3.1.1. Table A14/5.1.3.1.1. Burnishing Step Vehicle gross Initial Final speed Deceleration Starting Brakings Max speed of the permitted weight temperature airflow during the brake speed [km/h] [m/s2] quantity before the application [kg] [km/h] [---] braking [m/s] [°C] MAX 1 75% / disc q.ty 80 30 4 100 60 30 5.1.3.1.2. Fatigue test According to Table A14/5.1.3.1.2. Table A14/5.1.3.1.2. Thermal fatigue test Step Vehicle gross Initial speed Final speed Deceleration Starting Time between 2 Brakings Max speed of weight temperature consecutive the permitted [km/h] [km/h] [m/s2] quantity before the brakings airflow during [kg] [---] brakings the brake [s] application [°C] +/- 10 °C [m/s] 1 75% / discs 50% Vmax 5 7 100 (a) 30 5 20 q.ty thermal 2 75% / discs 80% Vmax 5 8 200 --- 1 30 q.ty functional 3 100% / discs 60% Vmax 5 10 200 --- 2 30 q.ty mechanic Steps from 1 to 3 = 1 cycle; repeating for a total of 20 cycles (= 160 brakings) (a) Starting temperature of the 1st braking only
5.1.1. This test is applicable to vehicle categories L3, L4 and L5. 5.1.2. Test conditions The inertia mass of the inertia dynamometer shall be determined in accordance with the requirements laid down in paragraphs 4.2.1., 4.2.1.1. and 4.2.1.2. of Annex 14. The rotational speed of the dynamometer shall correspond to the linear test speed of the vehicle based on the mean of the largest and smallest dynamic rolling radius of the tyres authorized for that vehicle. 5.1.3. Front disc 5.1.3.1. Test programme 5.1.3.1.1. Burnishing According to Table A14/5.1.3.1.1. Table A14/5.1.3.1.1. Burnishing Step Vehicle gross weight [kg] Initial speed [km/h] Final speed [km/h] Deceleration [m/s2] Starting temperature before the braking [°C] MAX Brakings quantity [---] Max speed of the permitted airflow during the brake application [m/s] 1 75% / disc q.ty 80 30 4 100 60 30 5.1.3.1.2. Fatigue test According to Table A14/5.1.3.1.2. Table A14/5.1.3.1.2. Thermal fatigue test Step Vehicle gross weight [kg] Initial speed [km/h] Final speed [km/h] Deceleration [m/s2] Starting temperature before the brakings [°C] +/- 10 °C Time between 2 consecutive brakings [s] Brakings quantity [---] Max speed of the permitted airflow during the brake application [m/s] 1 thermal 75% / discs q.ty 50% Vmax 5 7 100 (a) 30 5 20 2 functional 75% / discs q.ty 80% Vmax 5 8 200 --- 1 30 3 mechanic 100% / discs q.ty 60% Vmax 5 10 200 --- 2 30 Steps from 1 to 3 = 1 cycle; repeating for a total of 20 cycles (= 160 brakings) (a) Starting temperature of the 1st braking only
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