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These notes are included as a reference for the cycle time calculations.

Table of Contents

Cycle Time

Cycle time is defined as the time for a truck to complete one return trip between any two points on the haul.

Code Block
languagec#
TheoreticalTruckCycleTime = SpotAtLoader + TruckLoadTime + LoadedTravelTime + SpotAtDump + DumpTime + UnloadedTravelTime + RechargeTravelTime + RechargeTime + TKPHDelay
TruckCycleTime = TheoreticalTruckCycleTime + Queue

...

Note that Michelin provides a temperature coefficient for calculating TKPH at different temperatures. This coefficient can sometimes be negative if the average haul speed is below 5 kilometres per hour. Essentially this means that there are no TKPH delays.

Cycles Per Charge

For trucks with Power Source set to Battery, this is the number of cycles that can be completed on a single charge.
It is roughly calculated by just dividing the battery capacity by the net energy usage per cycle.
In the special case of Battery Capacity = 0, there are infinite cycles per charge.


When Battery Capacity is not the special value of 0, the cycles per charge are more precisely calculated as:

Code Block
languagec#
Effective Capacity = Max(0, Battery Capacity - (Recharge Travel Time * Battery Usage While Travelling To Recharge))
if (Net Usage > Effective Capacity) {
    Charges Per Cycle = RoundUp(Net Usage / Effective Capacity) 
    Cycles Per Charge = 1 / Charges Per Cycle
} else {
    Cycles Per Charge = RoundDown(Effective Capacity / Net Usage)
}

Recharge Time and Recharge Travel Time per cycle

Then the Recharge Time and Recharge Travel Time per cycle are calculated using Cycles Per Charge from above as just:

Code Block
languagec#
Recharge Time Per Cycle = Single Recharge Time / Cycles Per Charge.
Recharge Travel Time Per Cycle = Single Recharge Travel Time / Cycles Per Charge.

See also:

Calculation FAQ