Patent ID: 11970146
Assignee: ZF CV SYSTEMS EUROPE BV
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. The secondary brake system (46′) as claimed in claim 6, wherein the brake control valve (56′) is pressure-controlled via a control inlet, wherein the working connector of said brake control valve (56′) is connected to the pressure medium outlet in the case of a pressureless control inlet and is connected in an unthrottled manner to the pressure medium inlet in the case of the control inlet loaded with a maximum actuating pressure, and wherein said brake control valve (56′) is assigned a pilot valve (86) that is a proportional valve and by way of which the control inlet of the brake control valve (56′) is connected in a graduated manner to the pressure medium source (14) or a further pressure medium sink (16c).