Cam shaft rotation angle position changing device, has pressure reservoir e.g. spring-tensioned piston reservoir, which is flow connected with oil supply line downstream to check valve and upstream to control valve by connecting pipe

摘要

The device (1) has a control valve (5) controlling a hydraulic phase adjuster, and a conveyor pipe including a conveyor unit and branching into two oil supply lines (12, 13) downstream to the conveyor unit, where the oil supply lines include additional motor devices. A check valve (17) is arranged in one of the oil supply lines, and a pressure reservoir (18) e.g. spring-tensioned piston reservoir, is flow connected with the oil supply line downstream to the check valve and upstream to the control valve by a connecting pipe (19). An independent claim is also included for a method for operating a cam shaft rotation angle position changing device.