Method and control device for operating a power takeoff
AssigneeZF Friedrichshafen AG
InventorsAnton Waibel, Dieter Strak, Wolfgang Schmid
Life of this patent
Estimating the term…
Abstract
A method for operating an auxiliary power take-off (5) in a drive-train of a motor vehicle with at least a drive aggregate (1) and with a transmission (2) connected between the drive aggregate (1) and an axle drive (4). To operate the power take-off (5,) a transmission gear is engaged in the transmission (2). During an uninterrupted operation of the power take-off (5), after lapse of a defined time period, an automatic shift to a protective gear is carried out in the transmission (2).
Claims11
A method for operating an auxiliary power take-off in a drive-train of a motor vehicle having at least a drive aggregate and an axle drive , and a transmission connected between the drive aggregate and the axle drive, the method comprising:
- engaging an initial transmission gear in the transmission to operate the power take-off;
- and
- during uninterrupted operation of the power take-off in the initial transmission gear in the transmission, after a lapse of a defined time period, automatically shifting to a protective gear in the transmission.
A control device for operating an power take-off in a drive-train of a motor vehicle with at least a drive aggregate and a transmission connected between the drive aggregate and an axle drive, the control device comprises at least a receiving interface designed to receive input signals from drive-train components;
- an evaluation unit for evaluating the input signals received;
- and a sender interface for emitting control signals to drive-train components;
- for the operation of the power take-off, the control device controlling an actuator system by which an initial transmission gear is engaged in the transmission, and, after lapse of a defined time period of uninterrupted power take-off operation, the control device activating the actuator system by which a protective gear is engaged in the transmission.
A computer program product with program code means which is stored on a computer-readable data carrier and which is run on a control device for operating an power take-off in a drive-train of a motor vehicle with at least a drive aggregate and a transmission connected between the drive aggregate and an axle drive, the control device having at least a receiving interface designed to receive input signals from drive-train components;
- an evaluation unit for evaluating the input signals received;
- and a sender interface for emitting control signals to drive-train components;
- such that when the computer program product is run on the control device for operating of the power take-off, the control device controls an actuator system by which an initial transmission gear is engaged in the transmission, and after lapse of a defined time period of uninterrupted power take-off operation, the control device activates the actuator system by which a protective gear is engaged in the transmission.
Dependencies are inferred from the claim text.