Man Truck & Bus Ag

Man Truck & Bus Se.

Johannes Hollweck

Ulrich Boehme

Thorsten Bachmann

Tobias Arroyo Böttcher

Helmut Fischer

Roland Uttinger

Thomas Achenbach

Simon Finkel

The present invention relates to a switchable actuation device () for a gas exchange valve. The switchable actuation device () comprises a two-piece rocker arm (). Said rocker arm comprises a first rocker arm portion (), which is mounted pivotably about a rocker arm shaft () and to which a bearing sleeve () is fastened concentrically with the rocker arm shaft (), and a second rocker arm portion () mounted pivotably on the bearing sleeve (). Furthermore, both the first and the second rocker arm portions () each comprise a cut-out (), wherein a locking element () of a coupling device () of the switchable actuation device () can optionally be brought into and out of engagement with the two cut-outs (). An actuation of the poppet valve, preferably a change between a closed position and an open position of the poppet valve, is interrupted if the locking element () is not in engagement with the two cut-outs (). The invention also relates to an internal combustion engine () and a motor vehicle ().

Switchable actuation device for a poppet valve in an internal combustion engine, internal combustion engine and motor vehicle

A cylinder head with connected exhaust manifold of an internal combustion engine the cylinder head has an exhaust duct ending at a cylinder head connecting face to which the exhaust manifold is connected. A flange bushing insert having a bushing part and an end-side flange, is inserted into an exhaust gas duct of the cylinder head. The bushing part has a radially protruding, circumferential bead as a spacer and sealing element that bears against the exhaust duct inner wall. The flange projects at the end of the flange bushing insert and is clamped between the cylinder head connecting face and the exhaust manifold connecting face such that a circumferential insulating gap.

Cylinder head with connected exhaust manifold of an internal combustion engine

The present disclosure relates to an exhaust-gas turbocharger for a supercharged internal combustion engine having a charge-air cooler. In order to prevent the formation in the charge-air-guiding parts of condensate which above a certain quantity, if it remains within the charge-air-guiding parts, leads to damage to the engine, such as, for example, ice formation, water shock or corrosion, it is proposed to provide a condensate outlet opening on the compressor of the exhaust-gas turbocharger, which opening is provided in a lowermost region of a charge-air flow path through the compressor.

Exhaust-gas turbocharger for a motor vehicle

A cooling device for engine oil and/or transmission fluid, in particular of an internal combustion engine, has a flow-through oil cooler in an oil trough. The oil cooler is formed by a plate heat exchanger with plate intermediate spaces which route coolant and oil. The plate intermediate spaces that conduct oil have an outer opening region which is arranged on the outer circumference of the plate heat exchanger as inflow region, via which hot oil to be cooled flows into the oil-conducting plate intermediate spaces. Furthermore, the oil-conducting plate intermediate spaces have an outer outflow region which is arranged on the outer circumference of the plate heat exchanger at a distance from the inflow region. The outflow region is connected indirectly or directly to an outer oil line connecting region, via which cooled oil flows out after heat exchange with the coolant. The plate heat exchanger is suspended in the oil trough at a defined spacing from the oil trough walls which surround it.

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Sulzbach-Rosenberg, Germany

Johannes Hollweck