Circuit system for motor vehicle retarder has connection between closed working circuit and gearbox sump for partial branching of gearbox oil into brake-activated retarder

摘要

The circuit system has a connection (18) between a closed working circuit (4) and the gearbox sump (13) for partial branching of the gearbox oil into the brake-activated retarder (1). The connection contains a valve that is driven depending on the temp. arising in the gearbox sump.