Transmission hydraulic system with multiple pressure regulating valves

摘要

A transmission hydraulic system includes a plurality of pressure regulating valves. In the region of the plurality of pressure regulating valves, the acting pressure can be adjusted to a pressure level that is adjusted downstream according to each total force component acting on the valve spool according to the operating state. The total force component is adjusted according to each pilot control force component that can act on the valve spool, an operating force component, and an adjusting force component that corresponds to a pressure level that exists downstream. The pilot control force component and the actuation force component act in the same manner, and can act on the valve spool in the direction of the first end position of the valve spool of the pressure regulating valve. In the first end position, the region upstream of the pressure regulating valve is connected to the region downstream of the pressure regulating valve via the pressure regulating valve. The pressure downstream of the pressure regulating valve acts against the pilot control force component and the actuating force component, and can act on the valve spool in the direction of the second end position of the valve spool. In the second end position, the region downstream of the pressure regulating valve is connected to the low pressure region. [Selection] Figure 1