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Vehicle Editor

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newNew file
Create a new empty .vveh file


openOpen existing file
Open an existing .vveh file


save Save current file


SaveAs Save file as...


sendto Send current file to the VECTO Editor
Note: If the current file was opened via the VECTO Editor the file will be sent automatically when saved.


Category (Not used in current version!)
The HDV category is needed in Declaration Mode to assign the correct driving cycles. Available categories:
  • Rigid Truck
  • Tractor
  • City Bus
  • Interurban Bus
  • Coach
Axle Configuration (Not used in current version!)
The Axle Configuration is needed in Declaration Mode to assign the correct driving cycles. Available configurations:
  • 4x2
  • 4x4
  • 6x2
  • 6x4
  • 6x6
  • 8x2
  • 8x4
  • 8x6
  • 8x8
HDV Class (Not used in current version!)
Displayes the automatically selected HDV Class depending on Category, Axle Configuration and GVW.


Weight / Loading [kg]
These fields define the weight and loading of the vehicle. Max. Loading displayes the maximum possible loading for the selected vehicle depending on curb weight and GVW values. Note: VECTO uses the sum of Curb Weight Vehicle, Curb Weight Extra Trailer/Body and Loading for calculation!


Air Resistance
The product of Drag Coefficient [-], Cross Sectional Area [m2] and Air Density [kg/m3] (see Settings) together with the air speed (relative to the vehicle) defines the Air Resistance. Note that the Drag Coefficient may be altered when using Cross Wind Correction (see below).


Axles / Wheels
Rolling Resistance Coefficients (RRC) are configured per axle. Max. axle weight [kg] is used to weighten each RRC value. RRC is normalized (Resistance Force [N] / (m [kg] * g [m/sē]) with m being the sum of Curb Weight Vehicle, Curb Weight Extra Trailer/Body and Loading).
Use the add and remove buttons to add or remove axles form the vehicle. Doubleclick entries to edit existing axle configurations.


Wheels Inertia [kgm2]
Rotational inertia of all wheels combined.


Wheel Diameter (dyn) [m]
Effective (dynamic) wheel diameter used to calculate engine speed.


Cross Wind Correction
Three different options are available:
  • No Correction
  • Speed dependent
  • Vair & Beta Input
Speed dependent correction:
This mode requires an input file which defines the Cd Scaling Factor over Vehicle Speed (.vcdv). The Scaling Factor is applied on the base Drag Coefficient (see above) depending on the actual vehicle speed. The .vcdv file must cover the the full speed range of the vehicle.

.vcdv Format (comma-separated, dot = decimal-mark):
c Vehicle Speed Cd Scaling Factor
c [km/h] [-]
... ...
... ...
Note: text lines (header, comments, etc.) must start with "c "

Correction via Vair & Beta:
This mode requires an input file which defines the Cd Scaling Factor depending on the Yaw Angle ("Beta", angle between vehicle longitudinal axis and direction of air velocity relative to the vehicle). Beta and the air velocity relative to the vehicle must be defined in the driving cycle (see below). The valid range for the Wind Angle (Beta) goes from 0 (headwind) to 180 (tailwind). VECTO assumes symmetrical vehicle shape (sign of beta is ignored).

.vcdb Format (comma-separated, dot = decimal-mark):
c Yaw Angle (Beta) Cd Scaling Factor
c [°] [-]
... ...
... ...
Note: text lines (header, comments, etc.) must start with "c "

The driving cycle must include input for Air Speed and Yaw Angle, see .vdri format!

browse Browse for .vcdv/.vcdb files


Open file with GRAPHi or an user-defined tool (see File Open Command).


Retarder
If available a Retarder Torque Loss Map can be defined here. Three options are available:
  • None
  • Primary (before gearbox): The rpm ratio is relative to the engine speed
  • Secondary (after gearbox): The rpm ratio is relative to the cardan shaft speed
Both, primary and secondary retarders, require an input file defining the Retarder Loss Torque:

Format
(comma-separated, dot = decimal-mark):
c Retarder Speed Loss Torque
c [rpm] [Nm]
... ...
... ...
Note: text lines (header, comments, etc.) must start with "c "

browse Browse for Retarder Input Files


OKSave and close file
If necessary the file path in the VECTO Editor will be updated.


Cancel Cancel without saving




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