@@ -4,7 +4,7 @@ The final fuel consumption is corrected in a post-processing to reflect systems
###Engine Stop/Start Correction
As the energy demand of auxiliaries is modeled as an average power demand over the whole simulated cycle, the energy demand of certain auxiliaries during engine-off periods needs to be compensated during engine-on periods. This is done using the [Vehicle-Line approach](##vehicle-line-approach). The energy demand of the auxiliaries that shall be active also during engine-off periods as well as the energy demand for starting the engine is accumulated (see [Engine Stop/Start](#advanced-driver-assistant-systems-engine-stopstart), [Eco-Roll with Engine Stop/Start](#advanced-driver-assistant-systems-eco-roll), and [PCC with Eco-Roll and Engine Stop/Start](#advanced-driver-assistant-systems-predictive-cruise-control)) during the simulation. The final fuel consumption is corrected for this "missing" energy
As the energy demand of auxiliaries is modeled as an average power demand over the whole simulated cycle, the energy demand of certain auxiliaries during engine-off periods needs to be compensated during engine-on periods. This is done using the [Engine-Line approach](##engine-line-approach). The energy demand of the auxiliaries that shall be active also during engine-off periods as well as the energy demand for starting the engine is accumulated (see [Engine Stop/Start](#advanced-driver-assistant-systems-engine-stopstart), [Eco-Roll with Engine Stop/Start](#advanced-driver-assistant-systems-eco-roll), and [PCC with Eco-Roll and Engine Stop/Start](#advanced-driver-assistant-systems-predictive-cruise-control)) during the simulation. The final fuel consumption is corrected for this "missing" energy
The total fuel consumption is corrected in a post-processing step according to the *vehline* approach. Therefore, for every engine operating point where the engine is switched on and has a positive fuel consumption the fuel consumption is plotted over the engine power. The slope (k) of the linear regression of the fuel consumption is used to compute the additional fuel that is needed for the energy demand during engine-off periods and engine starts.
The total fuel consumption is corrected in a post-processing step according to the *engine-line* approach. Therefore, for every engine operating point where the engine is switched on and has a positive fuel consumption the fuel consumption is plotted over the engine power. The slope (k) of the linear regression of the fuel consumption is used to compute the additional fuel that is needed for the energy demand during engine-off periods and engine starts.
@@ -31,7 +31,9 @@ The .vsum file includes total / average results for each calculation run in one
| FC-Final<\_FuelName> | [g/h], [g/km], [l/100km], [l/100tkm], [l/100m^3km] | Final average fuel consumption after ALL corrections (FC-Final = FC-ESS_Corr). Fuel consumption for calculation of CO~2~ value. If Loading = 0[kg] the column [l/100tkm] is left empty. |
| CO2 | [g/km], [g/tkm], [g/m^3km] | Average CO~2~ emissions (based on FC-Final value). Output for [l/100tkm] is empty when Loading = 0[kg]. |
| P_wheel_in_pos | [kW] | Average positive power at the wheels |
| P_wheel_in | [kW] | Average power at the wheels |
| P_fcmap_pos | [kW] | Average positive power at engine (all non-negative values averaged over the whole cycle duration) |
| P_fcmap_pos | [kW] | Average power at engine (both, positive and negative values, averaged over the whole cycle duration) |
| E_fcmap_pos | [kWh] | Total positive work provided by the combustion engine. |
| E_fcmap_neg | [kWh] | Total energy |
| E_powertrain_inertia | [kWh] | Total work of engine, torqueconverter, and gearbox inertia |
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@@ -68,7 +70,8 @@ The .vsum file includes total / average results for each calculation run in one
| E_aux_ess_mech | [kWh] | Total work of auxiliaries during engine stop and thus not considered in FC-Map and FC-AAUX. Considered in FC-ESS_Corr via [fuel consumption correction](#engine-fuel-consumption-correction)(Based on P_aux_ESS_mech in .vmod) |
| E_ice_start | [kWh] | Total work for starting the combustion engine, not considered in FC-Map and FC-AAUX. Considered in FC-ESS_Corr via [fuel consumption correction](#engine-fuel-consumption-correction)(Based on P_ice_start in .vmod) |
| ice_starts | [-] | Number of times the combustion engine is started |
| k_vehline | [g/kWh] | Slope of the regression line used for the [fuel consumption correction](#engine-fuel-consumption-correction) |
| k_vehline | [g/kWh] | Slope of the regression line derived from all operating points P_wheel vs. FC_final_mod where P_wheel > 0 and FC_final_mod > 0 |
| k_engline | [g/kWh] | Slope of the regression line used for the [fuel consumption correction](#engine-fuel-consumption-correction) |
| a | [m/s^2^] | Average acceleration |
| a_pos | [m/s^2^] | Average acceleration in acceleration phases (a~3s~ \> 0.125 \[m/s^2^\], a~3s~ = 3-seconds-averaged acceleration) |
| a_neg | [m/s^2^] | Average deceleration in deceleration phases (a~3s~ \< 0.125 \[m/s^2^\], a~3s~ = 3-seconds-averaged acceleration) |
