Control device and method for controlling a hydraulic auxiliary brake arrangement

A control device (100) and a method for controlling a hydraulic auxiliary brake arrangement (8, 9) of a vehicle powertrain (2) are provided. The hydraulic auxiliary brake arrangement (8, 9) comprises a rotatable first shaft (20) connectable to a second shaft (24) of the vehicle powertrain onto which...

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Bibliographische Detailangaben
Hauptverfasser:	Vestgöte, Karl, Hanstad, Patrick
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL BRAKES CLUTCHES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A control device (100) and a method for controlling a hydraulic auxiliary brake arrangement (8, 9) of a vehicle powertrain (2) are provided. The hydraulic auxiliary brake arrangement (8, 9) comprises a rotatable first shaft (20) connectable to a second shaft (24) of the vehicle powertrain onto which a braking torque is to be exerted by the hydraulic auxiliary brake arrangement. The hydraulic auxiliary brake arrangement further comprises a rotor (30), connected to the first shaft, and a stator (32). The rotor (30) and the stator (32) jointly form a toroidal volume (33). The hydraulic brake arrangement further comprises a hydraulic circuit (40) connected to the toroidal volume (33), a reservoir (36) for hydraulic fluid, a pump (34) configured to transfer hydraulic fluid from the reservoir to the hydraulic circuit, as well as a control valve (50) configured to control the hydraulic pressure in the hydraulic circuit. In accordance with the method, the pump is activated based on a predicted future driverinitiated demand for brake torque and the control valve is controlled so that a hydraulic pressure in the hydraulic circuit is lower than a preselected threshold value. A computer program, a computerreadable medium and a vehicle (1) are also disclosed.