Avl List Gmbh

Jürgen Gelter

Andreas Zurk

Christof Knollmayr

Martin Klampfer

Andreas Krobath

Manfred Breitenberger

Thomas Salmutter

Devaraj Doraiswamy

Bernhard Hausmann

Martin Zapf

The invention relates to a liquid-cooled internal combustion engine, comprising:—a cylinder head having a top-down cooling concept, with a head cooling chamber with a first head partial cooling chamber spaced apart from the fire deck and with a second head partial cooling chamber, which adjoins the fire deck of the cylinder head and is separated from the first head partial cooling chamber by an intermediate deck, the first head partial cooling chamber and the second head partial cooling chamber being fluidically interconnected, in the region of a central component, by means of a passage channel in the intermediate deck;—a main feed channel, which is disposed in the cylinder block and is connected to the first head partial cooling chamber by means of a first flow passage in the fire deck of the cylinder head and by means of a supply channel;—a block cooling jacket, which is fluidically connected to the second head partial cooling chamber by means of a second flow passage in the fire deck of the cylinder head. According to the invention, in order to improve the cooling, the block cooling jacket has a first block partial cooling jacket, which is near the fire deck and into which the second flow passage leads, and a second block partial cooling jacket, which is separated from the first block partial cooling jacket and is remote from the fire deck, the first block cooling jacket being fluidically connected to the second block cooling jacket by means of a third flow passage which is diametrically opposite the second flow passage, and the second block partial cooling jacket being connected to a main discharge channel which is disposed in the cylinder block.

Liquid-cooled internal combustion engine

The invention relates to a reciprocating-piston machine, comprising a valve actuation device for at least one gas exchange valve, at least one valve stroke transmission device, which has at least one valve stroke transmission element, which is arranged between the gas exchange valve and the camshaft and which is mounted for movement between a first Position associated with a closed Position of the gas exchange valve and a second Position associated with an open position of the gas exchange valve, at least one halting device having a halting element mounted for movement between an actuation position and a release position in a machine housing or a housing-fixed component parallel to a guiding surface of the first valve stroke transmission element that the halting element at least shows the displacement motion of the first valve stroke transmission element and releases said displacement motion in the release position.

Reciprocating-piston machine

The present invention relates to a coupling device for a valve-actuating device for actuating at least one valve of a reciprocating machine having variable valve lift, in particular for a valve-actuating device of a reciprocating internal combustion engine, to a valve-actuating device and to a reciprocating machine, the coupling device comprising a first coupling element, a second coupling element and a blocking means. The first coupling element and the second coupling element can be displaced relative to one another at least within defined boundaries along a first axis, it being possible for the blocking means to block the relative displacement of the two coupling elements with respect to one another along the first axis at least in a first direction. The blocking means comprises a blocking element, which can be rotated about the first axis in the circumferential direction at least in a defined region, the relative displacement of the two coupling elements along the first axis being blocked at least in the first direction if the blocking element is in a blocking position.

Coupling device for a valve-actuating device

The invention relates to a reciprocating-piston engine, in particular an internal combustion engine having a variable compression ratio with a length adjusting device which is arranged in a connecting rod and which can be activated by a switching unit arranged in the connecting rod, wherein an actuating mechanism is operatively connected to the switching unit in the region of a connecting rod bearing in order to introduce a switching pulse into the connecting rod. The actuating mechanism has a deflection element with at least one first force-application region and at least one second force-application region, and the first force-application region and the second force-application region can be selectively contacted with at least one actuating device.

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Graz, Austria

Jürgen Gelter