Actuation system for at least one hydraulically actuable device, in particular a vehicle brake

An actuation system for at least one hydraulically actuatable device, comprising:

• an actuation device,
• at least one first pressure source configured to be actuated using the actuation device, and
• a second pressure source, including
• a pressure-generating organ that is moveable in two directions, and
• an electro-mechanical drive for the pressure-generating organ,
• wherein the at least one first pressure source is connected via at least one first hydraulic line and the second pressure source is connected via at least a second hydraulic line and a third hydraulic line to the hydraulically actuatable device in order to supply the at least one first pressure source and the second pressure source with pressurising medium or to otherwise pressurise them, and
• the actuation system further comprising a valve arrangement configured to regulate pressure of the hydraulically actuatable device,
• wherein pressurising medium is enabled to be supplied in a controlled manner by the second pressure source in both movement directions of the pressure-generating organ,
• wherein the second and third hydraulic lines are connected to respective ones of two working chambers of the second pressure source and are connected by means of a fourth hydraulic line, and
• wherein a valve device is arranged in the fourth hydraulic line connecting the two working chambers;
• and
• wherein the actuation system further comprises a switching valve and a fifth hydraulic line that leads from one or both of the second and third hydraulic lines to a reservoir, wherein the switching valve is arranged in the fifth hydraulic line.

An actuation system for at least one hydraulically actuatable device, comprising:

• an actuation device,
• at least one first pressure source configured to be actuated using the actuation device, and
• a second pressure source, including
• a pressure-generating organ that is moveable in two directions, and
• an electro-mechanical drive for the pressure-generating organ,
• wherein the at least one first pressure source is connected via at least one first hydraulic line and the second pressure source is connected via at least a second hydraulic line and a third hydraulic line to the hydraulically actuatable device in order to supply the at least one first pressure source and the second pressure source with pressurising medium or to otherwise pressurise them, and
• the actuation system further comprising a valve arrangement configured to regulate pressure of the hydraulically actuatable device,
• wherein pressurising medium is enabled to be supplied in a controlled manner by the second pressure source in both movement directions of the pressure-generating organ,
• wherein the second and third hydraulic lines are connected to respective ones of two working chambers of the second pressure source and are connected by means of a fourth hydraulic line, and
• wherein a valve device is arranged in the fourth hydraulic line connecting the two working chambers;
• and
• wherein the actuation system further comprises a switching valve and a fifth hydraulic line that leads from at least one of the two working chambers to a reservoir, wherein the switching valve is arranged in the fifth hydraulic line.