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VECTO Editor / Driver Tab

Driver

Max. acceleration and brake curves (.vacc Input File)
Limits vehicle acceleration and deceleration depending on vehicle speed. If Look-Ahead Coasting is enabled then the deceleration is applied in the brake phase.

Input File Format
(comma-separated, dot = decimal-mark):
c vehicle speed Max. acceleration Max. deceleration
c [km/h] [m/s2] [m/s2]
... ... ...
... ... ...
Note: text lines (header, comments, etc.) must start with "c "

Open file browser.

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


Engine Start/Stop
If enabled the engine will be turned off after the set Activation Delay [s] if the following conditions apply:
  • Power demand ≤ 0
  • Vehicle speed is below Max Speed [km/h]
  • Engine was running for at least Min ICE-On Time [s]
Note: Currently there is no method available in VECTO to automatically compensate for invalid auxiliary cycle work when Engine Start/Stop is enabled. This means, if enabled, there might be an error in the total auxiliary work (compared to operation without Start/Stop). The auxiliary power supply in the driving cycle (see here) must be corrected accordingly.



Overspeed / Eco-Roll


Overspeed
If Pwheel* < 0: Coasting with brakes not applied for speed < target speed + allowed overspeed
Parameters:
  • Minimum Target Speed
  • Allowed Overspeed
*Pwheel = Total power demand at wheels




Eco-Roll
If Pwheel* < 0: Neutral gear, engine idling. Engine- and service- brake applied if target speed + allowed overspeed is reached. Eco-Roll deactivates if target speed + allowed underspeed is reached.
Parameters:
*Pwheel = Total power demand at wheels





Look-Ahead Coasting
Enables coasting before each braking phase. Coasting will begin at T seconds before new lower target speed (see picture below). Braking deceleration is defined by the .vacc file. Look-Ahead Coasting is disabled if target speed is below Minimum Target Speed.
Parameters:
  • Target Retardationalookahead
  • Minimum Target Speed
Note: If road gradient > 0 the coasting deceleration will not be affected, i.e. coasting deceleration is calculated for road gradient=0. This should prevent the vehicle from decelerating too fast. If road gradient < 0 and Pwheel < 0 coasting is disabled (else the vehicle would accelerate).













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