Drive unit for a combustion engine having a starter generator and a belt drive has tensioner with spring and counter hydraulic force

摘要

A drive unit for a combustion engine having a starter/generator and a belt drive driving the belt pulley or chain wheel of the crankshaft on starting or is driven by it during generation comprises a spring (13) tensioner (5) with tensioning roller, the spring being opposed by hydraulic pressure from a closed hydraulic medium circuit.