Schaeffler Technologies Ag & Co .Kg

Daimler Ag

Andreas Eichenberg

Jens Meintschel

Mario Kuhl

Matthias Gregor

Calin Petru Itoafa

Lothar Von Schimonsky

Thomas Kremer

Jens Lang

A hydraulic unit () is provided for a cylinder head () of an internal combustion engine with a hydraulically variable valve train (). In the hydraulic unit, a high-pressure chamber (), a medium-pressure chamber (), and a low-pressure chamber () used as the hydraulic medium reservoir are formed. The low-pressure chamber communicates via a throttle point ('&#x2033;) with the medium-pressure chamber, and the throttle point is formed by a displaceable valve body (&#x2032;&#x2033;) and has through-flow cross sections of different sizes according to a position of the valve body.

Hydraulic unit for a cylinder head of an internal combustion engine with hydraulically variable gas-exchange valve train

A hydraulic unit () is provided for a cylinder head () of an internal combustion engine with a hydraulically variable gas-exchange valve train (). In the hydraulic unit, a high-pressure chamber (), a medium-pressure chamber (), and a low-pressure chamber () used as the hydraulic medium reservoir are formed. The low-pressure chamber communicates via a throttle opening ('&#x2033;) with the medium-pressure chamber, and the throttle opening extends through a housing seal () produced as a separate component.

In a braking device for a camshaft adjuster of an internal combustion engine wherein the camshaft adjuster includes at least two adjustment inputs, a respective braking element is provided for each adjustment input to brake the respective adjustment input, the braking elements being operable by an excitation coil arrangement, which, depending on the direction of energization of an excitation coil arrangement, subjects either the one or the other braking element to magnetic flux for initiating braking of the respective adjustment input.

Braking device for a camshaft adjuster

In a camshaft adjusting device for adjusting a phase position of a camshaft relative to a crankshaft of an internal combustion engine with a gear mechanism including at least three drive connections, a locking element is provided, with which at least two of the at least three drive connections, can be locked to one another in a rotationally fixed manner depending on operating conditions for retaining a particular phase position of the camshaft relative to the crankshaft of the internal combustion engine.

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Chemnitz, Germany

Andreas Eichenberg