Abstract: Methods and systems for operating a vehicle are provided. In one example, a method for operating a vehicle may include flowing compressed gas selectively through distinct orifice sizes depending on an operating condition of the vehicle. In another example, the vehicle may be a rail vehicle. In one example, the compressed gas may include compressed ambient air, and where the compressed gas is selectively delivered toward an upstream of a vehicle wheel riding on a rail via a nozzle. In another example, the compressed gas may be selectively delivered through a first orifice and not a second orifice to the nozzle during a first condition, and delivered through the second orifice and not the first orifice during a second condition different from the first condition.

Abstract: A system and related method includes receiving an ambient temperature adjacent to a system, an electric current value of electricity that is conducted into or out of a battery coupled with the system, and a voltage of a battery circuit that includes the battery. An internal temperature of the battery is determined based at least in part on the ambient temperature, the current value, and the voltage. One or more conditions for charging or discharging the battery are determined based at least in part on the internal temperature of the battery, the current value, and the voltage. The battery is charged or discharged based on least on the one or more conditions.