Experimental Research of Automated Manual Transmissions for Off-road Vehicles

Abstract

The object of study is transmissions off-road vehicle. The purpose of the research is the creation of automated manual transmission (AMT) for all-terrain vehicles. The work describes the main technical characteristics of the vehicles, as well as units that are subject to automated control: friction clutch, gearbox and distributor box with electro-pneumatic actuators. It represents the stand for laboratory experimental studies of robotic mechanical transmissions and the results obtained on the test bench during the work of the transmission units in the automatic mode. The analyzed parameters when working at the test bench is the total time of gear-shifting, the clutch engagement and disengagement, time and magnitude of pressure increase in the transmission automatic control mechanism and power transmission control cylinder, time of synchronization, dynamic loads during gear shifting, the overall power losses in the work of transmission units and other parameters. It also shows the comparison of calculated data and experimental results obtained on the test bench and on the road. It represents conclusions and recommendations on creation of mechanical of multistage transmission with automatic control for off-road vehicle.