Division 7.8.3.4 Calculation of cycle work

Before calculating the cycle work, any speed and torque values recorded during engine starting shall be omitted. Points with negative torque values have to be accounted for as zero work. The actual cycle work W _act (kWh) shall be calculated based on engine feedback speed and torque values. The reference cycle work W _ref (kWh) shall be calculated based on engine reference speed and torque values. The actual cycle work W _act is used for comparison to the reference cycle work W _ref and for calculating the brake specific emissions (see point 7.2).

W _act shall be between 85 % and 105 % of W _ref.