US 12,449,007 B2 · Method for controlling a hydraulic control device

Abstract

A method is provided for controlling a hydraulic control device which can actuate a torque device and includes a first actuating element configured to be acted upon by a first fluid pressure in a first fluid line and configured to actuate the torque device; a system pressure line hydraulically connected to the first fluid line and having a system pressure; a first valve element located between the first fluid line and the system pressure line and configured to the first fluid pressure via the system pressure; and a supply element configured to provide the system pressure and being hydraulically connected to the system pressure line. The method includes setting first fluid pressure based on a predetermined target torque value, and setting the system pressure above the first fluid pressure by a pressure difference based on a pressure control value.

Claims17

Dependent claims

A method for controlling a hydraulic control device that can actuate a torque device, wherein the hydraulic control device includes a first actuating element configured to be acted upon by a first fluid pressure in a first fluid line and configured to actuate the torque device, a system pressure line hydraulically connected to the first fluid line and having a system pressure, a first valve element located between the first fluid line and the system pressure line and configured to set the first fluid pressure via the system pressure, and a supply element hydraulically connected to the system pressure line and configured to provide the system pressure, the method comprising:

setting the first fluid pressure based on a target torque value for the first actuating element, and
setting the system pressure above the first fluid pressure by a pressure difference based on a pressure control value, wherein the system pressure is set, at a first value of the pressure control value above the first fluid pressure by the pressure difference, and, at a second value of the pressure control value different from the first value, independently of the pressure difference.

A method for controlling a hydraulic control device that can actuate a torque device, comprising:

determining a target torque value for an actuating element configured to actuate the torque device;
determining a first fluid pressure based on the target torque value, wherein the actuating element is configured to be acted upon by the first fluid pressure via a first fluid line;
setting a system pressure based on a pressure control value;
and
actuating a supply element to provide the system pressure to a system pressure line hydraulically connected to the first fluid line, wherein a first valve element is located between the first fluid line and the system pressure line and is configured to provide the first fluid pressure to the first fluid line based on the system pressure, wherein the pressure control value can assume at least two values, wherein, for a first value of the pressure control value, the system pressure is set above the first fluid pressure by a pressure difference, and for a second value of the pressure control value, the system pressure is set independently of the pressure difference.

2 more elements

Dependencies are inferred from the claim text.

Method for controlling a hydraulic control device

Life of this patent

Method for controlling a hydraulic control device

Life of this patent

Abstract

Claims17