A new 'automatic trailer stretch brake' option for CLAAS ARION tractors with CMATIC transmission stabilises the tractor-trailer combination on slopes and slippery surfaces in order to prevent the risk of jack-knifing and includes a range of additional convenient features.
Automatically safer
The new automatic stretch brake function for CLAAS ARION 500/600 tractors with CMATIC transmission and air brakes helps relieve the burden on the driver in difficult conditions such as driving heavy trailers downhill and working with square balers, round balers, baler-wrapper combinations and trailed crop sprayers on slopes. With four new functions to support the driver in many different situations, the system automatically activates the trailer’s air brakes as soon as critical thrust forces are exerted on the tractor that potentially could result in the trailer jack-knifing. The system operates using sensors in the transmission to record engine torque and transmission loads going through the drive train.
Brakes engaged automatically on decelerating
The driver can actively increase the braking action of the combination when driving downhill by pulling back the drive lever in auto mode or the DRIVESTICK in DRIVESTICK mode. This increases deceleration by reducing the transmission ratio and increasing the engine speed to match the forward speed. For maximum deceleration the air brake engages automatically to reduce the trailer’s ground speed and stretch the tractor-trailer combination.
The automatic trailer-stretch function can also be used with active cruise control speeds up to a maximum 20 km/h. On gentle slopes and with lights loads, the cruise control speed is automatically maintained by activating the pneumatic trailer brakes; on steep slopes and with heavy loads, exceedance of the set cruise control speed is reduced. This function can be used when working on slopes with square balers or trailed crop sprayers, providing an enormous safety boost in addition to significantly reducing the driver's workload.