The automated transmission in the tractor uses a variety of technologies to optimize gear selection based on factors like engine speed, throttle position, grade, and load. This is in contrast to a manual transmission where the driver manually selects the gears.
Here's how it generally works:
* Sensors: Various sensors throughout the truck monitor engine speed, vehicle speed, throttle position, and other relevant parameters.
* Electronic Control Unit (ECU): An ECU processes this sensor data and uses pre-programmed algorithms to determine the optimal gear for the current driving conditions.
* Actuators: Actuators (typically pneumatic or electric) shift the gears within the transmission according to the ECU's instructions. This happens automatically without driver input (unless the driver overrides it using manual mode).
* Different Modes: Many autoshift systems offer different modes (e.g., Economy, Power, Manual) to allow the driver some level of control over the shifting strategy. In manual mode, the driver can select gears manually but the system still manages the clutch engagement and disengagement.
In short, the trailer is simply along for the ride. The autoshift only affects the tractor's transmission, improving fuel efficiency, reducing driver fatigue, and potentially offering better performance in certain situations compared to a manual transmission.
