Vehicle Editor


eng

Description

The Vehicle File (.vveh) defines the main vehicle/chassis parameters like axles including RRCs, air resistance and weight.


Relatve File Paths

It is recommended to define relative filepaths. This way the Job File and all input files can be moved without having to update the paths.
Example: "Demo\RT1.vrlm" points to the "Demo" subdirectory of the Vehicle File's directoy.

VECTO automatically uses relative paths if the input file (e.g. Retarder Losses File) is in the same directory as the Vehicle File. (The Vehicle File must be saved before browsing for input files.)


General vehicle parameters

Vehicle Category
Needed for Declaration Mode to identify the HDV Class.

Axle Configuration
Needed for Declaration Mode to identify the HDV Class.

Gross Vehicle Mass Rating [t]
Needed for Declaration Mode to identify the HDV Class.

HDV Class

Displays the automatically selected HDV Class depending on the settings above.


Weight/Loading

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 [-] and Cross Sectional Area [m2] (cd x A) and Air Density [kg/m3] (see Settings) together with the vehicle speed defines the Air Resistance. Note that the Drag Coefficient may be altered when using Cross Wind Correction.


Axles/Wheels

For each axle the parameters Relative axle load, RRCISO and FzISO have to be defined in order to calculate the total Rolling Resistance Coefficient.
Furthermore the Wheels Inertia [kgm²] has to be set per wheel for each axle. In Declaration Mode the inertia is defined automatically according to the selected tyres.
Use the add and remove buttons to add or remove axles form the vehicle. Doubleclick entries to edit existing axle configurations.

Dynamic Tyre Radius [mm]
Effective (dynamic) wheel radius used to calculate engine speed. In Declaration Mode the radius calculated automatically using tyres/rims of the powered axle.

Powered axle tyres/rims
Needed for Declaration Mode to calculate the dynamic tyre radius.


Retarder Losses

If available a Retarder Torque Loss Map can be defined here to consider idling losses caused by the retarder.
Note: Do not use this function if the retarder's losses are already included in the Transmission Loss Maps!

Three options are available:
Both, primary and secondary retarders, require an Retarder Loss Torque Input File (.vrlm).


Cross Wind Correction

Four different options are available:
Depending on the chosen mode either a Speed Dependent Cross Wind Correction Input File (.vcdv) or a Vair & Beta Cross Wind Correction Input File (.vcdb) must be defined. For details see Cross Wind Correction.


Controls

new New file
Create a new empty .vveh file

open Open 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.

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


Cancel Cancel without saving