Patent ID: 7954464
Filing Date: 2011-06-07
Classification: F01L

Abstract:
1. Cylinder head of an internal combustion engine with an electrohydraulic valve controller, comprising: at least one master unit driven by a camshaft, at least one valve-side slave unit, at least one electrically controllable hydraulic valve, at least one pressure relief space, and at least one variable volume pressure space, which is arranged in a transmission direction between an associated one of the at least one master unit and an associated one of the at least one slave unit and which can be connected to an associated one of the at least one pressure relief space via an associated one of the at least one hydraulic valve, wherein at least the at least one master unit, the at least one slave unit, the at least one pressure space, the at least one hydraulic valve, the at least one pressure relief space, and at least one non-return valve, in combination with a common hydraulic housing, form a preassembled hydraulic unit, which is mounted on the cylinder head and which is connected to a hydraulic medium supply of the internal combustion engine via the at least one non-return valve which opens in a direction of the hydraulic unit, and for an initial filling of the at least one pressure relief space and/or the at least one pressure space with hydraulic medium, in addition to the at least one non-return valve, at least one filling device independent of the hydraulic medium supply and formed on the hydraulic housing is provided with a closure.