Division 8.1.4 Adjustment

The chassis dynamometer setting load shall be adjusted according to the following equations:

F_{*}^{dj} = F_{dj} - F_{j} = F_{dj} - F_{sj} + F_{tj}

= (A_{d} + B_{d} v_{j} + C_{d} v_{2}^{j}) - (A_{s} + B_{s} v_{j} + C_{s} v_{2}^{j}) + (A_{t} + B_{t} v_{j} + C_{t} v_{2}^{j})

= (A_{d} + A_{t} - A_{s}) + (B_{d} + B_{t} - B_{s}) v_{j} + (C_{d} + C_{t} - C_{s}) v_{2}^{j}

Therefore:

A_{*}^{d} = A_{d} + A_{t} - A_{s}

B_{*}^{d} = B_{d} + B_{t} - B_{s}

C_{*}^{d} = C_{d} + C_{t} - C_{s}

where:

F_dj

is the initial chassis dynamometer setting load, N;

F^*_dj

is the adjusted chassis dynamometer setting load, N;

F_j

is the adjustment road load equal to (F_sj - F_tj), N;

F_sj

is the simulated road load at reference speed v_j, N;

F_tj

is the target road load at reference speed v_j, N;

A^*_d, B^*_d and C^*_d

are the new chassis dynamometer setting coefficients.