Pressure changeover switch, especially for regulating combustion engine lubrication system oil pump, has control pressure line with first choke, branch line to pressure sink with second choke and/or control device with adjustable throughput

摘要

The switch has an adjuster for the supply quantity, a control piston (35) for constant or variable oil pressure regulation, a main oil line (17) under oil pressure between the regulating oil pump and the internal combustion engine, a control pressure line (40) between the main oil line and the regulating oil pump for applying control pressure . The control pressure line has a first choke and then downstream of the regulating oil pump a branch line to a pressure sink with a second choke and/or a control device with adjustable oil throughput.