It is instead controlled by throttle position and also by a governor.

For example, only four trainlines are required to encode all possible throttle positions.

The supply of this oil is controlled by the throttle position.

He would not elaborate, except to say that where there should be readings showing the train's throttle position, there are question marks instead.

The system output is the car's speed, and the control itself is the engine's throttle position which determines how much power the engine generates.

Now, when the car goes uphill, the decrease in speed is measured, and the throttle position changed to increase engine power, speeding up the vehicle.

The governor adjusts the throttle position as the speed of the engine changes with different loads.

These include a change of throttle position, brake or horn operation, all indications that the driver is actively controlling the train.

When used solely for traction purposes, the engine speed varies depending on the throttle position.

For the PowerBoost to activate, the throttle position must be above 80% and the speed more than 60 km/h.