Detection of hazardous situation
The system automatically activates the trailer’s air brakes as soon as predetermined forces are exerted on the tractor. These critical pressures could potentially result in the trailer jack-knifing with unfortunate consequences.The system operates using sensors in the transmission to record engine torque and transmission loads going through the drive train.
The driver can actively increase the braking action of the combination when driving by pulling back the drive lever in 'auto' mode. This increases deceleration by reducing the transmission ratio and increasing the engine speed to match the forward speed.
Working in conjunction with cruise control
The automatic trailer-stretch function can also be used with active cruise control speeds of up to maximum 20km/h. On slight slopes and with lights loads, the cruise control speed is automatically maintained by activating the pneumatic trailer brakes. On steeper gradients with heavy loads, excess speed over that of the set speed may be reduced.
Cadence braking by Claas
The automatic trailer stretch brakes also assist with reversing trailers by triggering the braking action as soon as the driver initiates a change in direction using the reversing or control lever.The pulsing action of the brakes effectively prevents overheating and reduces the risk of wheel lock with automatic braking assistance.
The automatic trailer stretch brake is available from summer 2021 and can be retrofitted to Arion 500/600 series tractors built from 2021 onwards.