Mobile working machine, particularly industrial truck, comprise combustion engine driven drive system and parking brake unit, which is formed as hydraulically detachable spring-loaded brake

摘要

The mobile working machine comprise a combustion engine driven drive system and a parking brake unit, which is formed as hydraulically detachable spring-loaded brake (1a,1b), which is operated by a brake valve (15) between a braking position and a release position. The brake valve is controlled by an electrical actuating unit (17) and is provided an electronic control unit (20) for controlling the electrical actuating unit of the brake valve.