Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle

Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle, comprising a power unit for generating a hydraulic pressure by use of a pump, which is drivable by way of an electric pump drive, in order to displace hydraulic fluid in a pumping direction, a gear setting section with a gear setting cylinder for the gear setting element which is hydraulically connected with the power unit, a clutch actuating section with a clutch setting cylinder which is hydraulically connected with the power unit and the piston of which is operatively connected with the friction clutch, and a control unit which is electrically connected with the pump drive and control elements for the gear setting section and the clutch actuating section, characterized in that;

• a detecting device with a blocking element is functionally associated, as a control element, with the piston, which can be hydraulically loaded on opposite sides, of the clutch setting cylinder the blocking element being resiliently biased into a blocking setting preventing movement of the piston and being movable against the resilient bias from the blocking setting into a release setting, which permits movement of the piston, by an actuator electrically activatable by the control unit, wherein the pumping direction of the pump is reversible in order to hydraulically load the piston of the clutch setting cylinder on one or the other side thereof for an actuating movement depending on the respective pumping direction, and wherein the control unit coordinates the electrical activation of pump drive and actuator in order to disengage and engage the friction clutch;
• the detenting device is mounted on the clutch setting cylinder, wherein the blocking element cooperates with blocking sections at the piston of the clutch setting cylinder so as to keep the piston in a rest setting or an actuation setting or to release it from the respective setting;
• the blocking sections are formed at the piston of the clutch setting cylinder by axially spaced-apart recesses at the piston circumference;
• the piston of the clutch setting cylinder is operatively connected on each of two opposite sides with a respective friction clutch so that one friction clutch or the other friction clutch is selectably actuable by the clutch setting cylinder;
• the clutch setting cylinder comprises a sensor device for detecting the position of the piston, with a sensor arranged at the cylinder housing and a signal element attached to the piston;
• the electrically activatable actuator is an electromagnetic actuator;
• and
• the piston of the clutch setting cylinder is mechanically coupled on at least one side with a master piston of a clutch master cylinder, which is hydraulically connected by way of a pressure line with a clutch slave cylinder with a slave piston, which is mechanically connected with the friction clutch.

Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle, comprising a power unit for generating a hydraulic pressure by use of a pump, which is drivable by way of an electric pump drive, in order to displace hydraulic fluid in a pumping direction, a gear setting section with a gear setting cylinder for the gear setting element which is hydraulically connected with the power unit, a clutch actuating section with a clutch setting cylinder which is hydraulically connected with the power unit and the piston of which is operatively connected with the friction clutch, and a control unit which is electrically connected with the pump drive and control elements for the gear setting section and the clutch actuating section, characterized in that;

• a detenting device with a blocking element is functionally associated, as a control element, with the piston, which can be hydraulically loaded on opposite sides, of the clutch setting cylinder the blocking element being resiliently biased into a blocking setting preventing movement of the piston and being movable against the resilient bias from the blocking setting into a release setting, which permits movement of the piston, by an actuator electrically activatable by the control unit, wherein the pumping direction of the pump is reversible in order to hydraulically load the piston of the clutch setting cylinder on one or the other side thereof for an actuating movement depending on the respective pumping direction, and wherein the control unit coordinates the electrical activation of pump drive and actuator in order to disengage and engage the friction clutch
• the piston of the clutch setting cylinder is operatively connected on each of two opposite sides with a respective friction clutch so that one friction clutch or the other friction clutch is selectably actuable by the clutch setting cylinder;
• the clutch setting cylinder comprises a sensor device for detecting the position of the piston, with a sensor arranged at the cylinder housing and a signal element attached to the piston;
• the electrically activatable actuator is an electromagnetic actuator;
• and
• the piston of the clutch setting cylinder is mechanically coupled on at least one side with a master piston of a clutch master cylinder, which is hydraulically connected by way of a pressure line with a clutch slave cylinder with a slave piston, which is mechanically connected with the friction clutch.

Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle, comprising a power unit for generating a hydraulic pressure by use of a pump, which is drivable by way of an electric pump drive, in order to displace hydraulic fluid in a pumping direction, a gear setting section with a gear setting cylinder for the gear setting element which is hydraulically connected with the power unit, a clutch actuating section with a clutch setting cylinder which is hydraulically connected with the power unit and the piston of which is operatively connected with the friction clutch, and a control unit which is electrically connected with the pump drive and control elements for the gear setting section and the clutch actuating section, characterized in that;

• a detenting device with a blocking element is functionally associated, as a control element, with the piston, which can be hydraulically loaded on opposite sides, of the clutch setting cylinder the blocking element being resiliently biased into a blocking setting preventing movement of the piston and being movable against the resilient bias from the blocking setting into a release setting, which permits movement of the piston, by an actuator electrically activatable by the control unit, wherein the pumping direction of the pump is reversible in order to hydraulically load the piston of the clutch setting cylinder on one or the other side thereof for an actuating movement depending on the respective pumping direction, and wherein the control unit coordinates the electrical activation of pump drive and actuator in order to disengage and engage the friction clutch;
• and
• the piston of the clutch setting cylinder is mechanically coupled on at least one side with a master piston of a clutch master cylinder, which is hydraulically connected by way of a pressure line with a clutch slave cylinder with a slave piston, which is mechanically connected with the friction clutch.