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RU 🇷🇺

Tip

In the Models step enter truck data to calculate acceleration, deceleration, axle loading, fuel burn, as well as battery trucks and trolley assist recharging parameters.

Table of Contents

Truck List

On the left-hand side is the truck list. You can have as many trucks as you would like to evaluate.

You can edit names of added trucks, delete, move them up and down in the list, as well as export to “.opentruck” file.
 

Press Add Truck button to add a new truck to your project. You can:

  • add a default truck,

  • or import it from a file or library.

    • You may choose to use a “.ATR” from Talpac, but we prefer the “.opentruck”/“.opentruck2”. These have been carefully digitised and cross-checked straight out of the manufacturer's handbook.

If you are querying from a scheduling package, the truck names must match what is in the scheduler.

Truck Library

📚

Truck files can be downloaded from the Alastri truck library.

There is an extensive library of modern trucks in the Trucks section on the website.

If you have a truck that is not in the list, please let us know (contact alastrisupport@micromine.com).

Note, that if you need fuel burn information for the specific truck type, please source it and provide it to us, and we will digitise it for you and add to the library, if applicable.

Truck Creator

⚒️

You can also digitise the required trucks yourself, using the Truck Creator functionality, provided in the Tools dropdown.

To digitise a truck of interest using the Truck Creator tool, you will need to find and download the manufacturer's data sheet/specifications for that truck model.

The specification must include the following data:

  • Weight: empty (unladen) weight, maximum payload capacity (payload), gross weight.

  • Truck weight distribution on axles, % front/rear, unladen/laden.

  • Towing and Braking performance.

  • Fuel consumption, if applicable.

Please note that the specifications available in the Internet may differ by country and product type, even if the model name is the same. Therefore, when searching, stick to the data applicable to the particular model of truck used in your operation.

For detailed instructions on the trucks digitising see HI. Truck Creator.

Axle Data

Tip

Axle data is used to calculate road friction forces and TKPH on tires during travel. It shows the full and empty weight over each axle, the number of tyres on that axle, and whether it is driven.

  • Each row represents one axle on the truck.

  • A “driven” axle is connected to the drive train.

  • Each axle has a number of tyres.

  • Each axle has a loaded and unloaded weight on it.

This is used for the TKPH tyre-loading calculations and full/empty travel times.

Cross-check these values with the equipment manufacturer’s handbook. Make sure to account for any custom tray modifications that affect axle weights.

Curves

  • The available curves are Rimpull, Retard, Fuel, Trolley Assist Rimpull, Battery Usage, Trolley Usage, Battery Regen and Regen Force.

  • Turn curves on and off using flags in the Active column. If some curves are not applicable to your truck, select (none).

  • Curves are digitized out of the manufacturer's handbooks. For better accuracy, calibrate with data from your fleet management system.

  • Click in the graph area to manually show a point.

  • Speed (km/h) and Force (kgf) values cannot be edited here, but can be copied into and pasted from Microsoft Excel using Copy to Clipboard and Paste from Excel buttons.

    • When editing and pasting curves data, the first Speed (km/h) value should always be 0.00.

Rimpull Curve

Tip

Rimpull is the amount of tractive force that the engine delivers to the ground through torque on the drive wheels.

Available rimpull is a function of the gear ratios and the rolling radius of the machine. Haul Infinity uses the rimpull curves and the axle weights to derive an acceleration from the current vehicle speed.

Rimpull curves show the propulsion force in kilograms (kgF) against truck velocity (km/h).

  • For mechanical trucks, the rimpull curve shows a characteristic series of humps as the transmission steps down through different gear ratios.

  • Electric trucks typically show a smoother rimpull profile.

Code Block
T = motor torque;
F = rimpull force;
r = rolling radius of driven tires;
G = gear reduction ratio between motors and driven wheels;
N = number of driving motors; 

T = (F * r) / (G * N);

Electric drive trucks have a smoother profile because there is no gear discontinuity. For electric drive trucks that do not have gears, rimpull can be approximated as the effective engine power divided by the velocity.

Code Block
P = power;
F = force;
V = velocity;

F = P / V;

Retard Curve

Tip

Haul Infinity uses retard curves to calculate the maximum safe braking force without overheating the brakes.

  • Braking curves show the braking force that the truck should be using at a particular velocity.

  • This is applied to the segment gradient to calculate when a truck would be unable to stop.

  • Braking curves are not used to calculate stopping distances.

  • The deceleration properties are set in Setup > Settings > Acceleration.

  • In the presence of regenerative braking (for Battery Power trucks), this remains to be the normal non regenerative brakes.

  • If multiple retard curves available for the imported truck file, compare and select the one applicable for the truck used on your site.

Fuel Curve

Tip

Fuel curves show the fuel consumption in liters per hour at different engine loads.

Haul Infinity uses this to calculate total fuel burned on each haul cycle if the trucks power source is Fuel (Setup > Trucks > Limits > Power Source)

  • Fuel curves match the fuel rate to the engine load.

Calibrate this graph with data from the fleet management system.

If fuel burn data is not present in the imported truck file, but applicable for your project, you need to source it from the manufacturer and provide to alastrisupport@micromine.com to digitise it for you. Otherwise, you can populate Engine Load % and Fuel/ Hour consumption in Excel and paste it using the Paste from Excel button, or use the Truck Creator tool.

  • This applies to the fuel powered trucks. Fuel curves are not needed for use with battery powered truck.

Trolley Assist Rimpull Curve

Tip

Trolley Assist provides an (optional) secondary rimpull curve, which is used when trucks cross traverse a Trolley Assisted segment.

  • Trolley assisted haulage involves feeding power to haul trucks from overhead lines. 

Segments have a trolley property. When toggled on, the truck switches to the trolley rimpull curve while traversing the segment.

Data will be available in:

Network > Cycle Time Analysis tab:

Network > Charts tab:

Battery Usage Curve

Tip

Battery Usage curves show the power consumption in kilowatts, at different ground speeds, while at full throttle.

Haul Infinity uses this to calculate total battery energy used on each haul cycle if the trucks power source is Battery (Setup > Trucks > Limits > Power Source > Power Source Type).

  • Applies to Battery Power Trucks only. Battery Usage curves are not needed for use with Fuel powered truck.

Trolley Usage Curve

Tip

Trolley Usage curve can be used to specify electric motor power usage while on trolley.

  • This will only affect calculations for Battery Electric Trucks. Trolley Usage curves are not needed for use with Fuel powered truck.

Battery Regen Curve

Tip

Battery Regen curves show the power restore to the batteries in kilowatts, at different ground speeds, while fully utilizing the regenerative brakes.

Haul Infinity uses this to calculate total battery energy restored on each haul cycle if the trucks power source is Battery (Setup > Trucks > Limits > Power Source > Power Source Type).

  • This will only affect calculations for Battery Electric Trucks. Battery Regen curves are not needed for use with Fuel powered truck.

Regen Force Curve (For Battery Power Trucks)

Tip

Regen Force curves show the braking force at the rim in kilograms force, at different ground speeds, while fully utilizing the regenerative brakes.

This is not used to calculate max safe downhill speeds like the retard curve, it’s just used to calculate the amount of the current braking that corresponds to regenerative braking and from that, how much energy is being restored.

  • This will only affect calculations for Battery Electric Trucks. Regen Force curves are not needed for use with Fuel powered truck.

ATS / APS integration

  • All battery related cycle time information is exposed into APS / ATS as normal via report fields.

  • Battery capacity and other parameters are exposed to scripts as operating conditions, allowing scripts to adjust battery performance on a per-haul basis.

  • This can be used to model battery degradation – scripts degrade battery capacity over time and update truck amounts.