HI. Truck Limits
- iarmstrong
In the Limits step set the safe operating limits by truck type, as well as some limiting parameters of battery trucks.
TKPH Limits | |
Bridgestone Limit (tkph) Michelin Limit (tkph) | Haul Infinity automatically adds TKPH delays to cycle times to keep tires below the TKPH limit. TKPH limits can be found in the tire manufacturer’s handbook. |
Power Source | |
Power Source Type: Fuel/Battery/None Battery Capacity (kWh) | The type of power source, Fuel or Battery can be selected here in the drop down box, and determines which calculations are done. The default None option is also available to prevent either set of calculations. The Battery Capacity is also set here, this is ignored if using either Fuel or None power sources. The special value of 0 is handled as though you have an infinite capacity battery, so there is never a need to recharge but power usage and generation are still calculated. |
Battery Recharge | |
| When using the power source of Battery, the time to recharge this battery will be taken into account and that is specified here. You can specify either a time to recharge or a recharge rate, the rate will then just use battery capacity to calculate a time. To control which is used use the drop down box. |
Battery Loads | |
| Optionally update battery loads for more accurate battery usage predictions. When using Battery power source, this calculates predicted battery usage during certain idle tasks based on a constant power rate. It’s important to note that negative values can be provided here to indicate that the battery is actually being charged at a constant rate during these idle task (i.e. when on the trolley or waiting for tires to cool). |
Fuel Engine Loads | |
| Optionally update engine loads for more accurate fuel burn predictions. When using the Fuel power source, this calculates predicted fuel burn during certain idle tasks based these engine loads. |
Cornering Speed Limits | |
| Cornering speeds are used to slow down trucks at intersections and switchbacks. Corners are measured by the angle of deflection and the lookahead distance. Haul Infinity automatically assigns speed limits to corners based on the inputs in this table. For angles greater than ninety degrees, consider dropping the speed limit to 10 km/hr. Cornering measures deflection rather than radius, because we are dealing with digitized points.  |
Speed Limits | |
These are the default speed limits that apply on all unsigned roads. Haul Infinity will always choose the lowest speed between the defaults and road signage. | |
Loaded Speed Limits | |
| Haul Infinity automatically assigns speed limits to loaded trucks based on the inputs in this table. For grades steeper than -9.5%, consider dropping the speed limit to 20 km/hr (or second gear equivalent). For grades steeper than +9.5%, consider dropping the speed limit to 10 km/hr (or first gear equivalent). |
Unloaded Speed Limits | |
| Haul Infinity automatically assigns speed limits to unloaded trucks based on the inputs in this table. For grades steeper than -9.5%, consider dropping the speed limit to 40 km/hr (or fourth gear equivalent). |