Abstract: A gas mixer for mixing gaseous fuel and air for an internal combustion engine is disclosed. The gas mixer may have a housing defining an air path for mixing the gaseous fuel and the air within the air path. The housing may have a narrowed portion. The gas mixer may also have a displacement body axially displaceable and coaxially arranged within the air path. The displacement body and the housing may define an air passage disposed at the narrowed portion. The gas mixer may further have a fuel inlet fluidly connected to the air passage. The fuel inlet may be configured to supply gaseous fuel to the air passage. Further, the gas mixer may have an adjusting unit disposed at least partially within the air path. The adjusting unit may be connected to the displacement body and may be configured to axially displace the displacement body.

Abstract: An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfill the following condition with respect to the wall height H: 0.05 H<=T<=0.5H.

Abstract: A piston for an internal combustion engine is disclosed. The piston may have a piston skirt with a center axis. The piston may also have a piston crown disposed adjacent a top of the piston skirt. The piston crown may have a diameter D. The piston crown may have a piston crown margin of width b extending in a circumferential direction. The piston crown may also have a piston trough with a depth t. The piston trough may have a piston trough wall with a base diameter. The piston trough may also have at least one recess with a height h. The height h parallel to the direction of the center axis may satisfy the following requirement: 0.2 t<=h<=t.

Abstract: A piston of an internal combustion engine is disclosed. The piston may have a piston skirt having a central axis. The piston may also have a piston crown delimiting the piston skirt with a diameter D adjacent a top of the piston skirt. The piston crown may have an edge of the piston crown of width b and a piston crown recess of depth t. The piston crown recess may have a piston recess wall with an opening cross section of diameter d. At least one groove with an internal diameter dn may be provided within the edge of the piston crown. The at least one groove may run in a circumferential direction relative to the central axis. The internal diameter dn may be larger than the diameter d.

Abstract: A gas mixer for mixing gaseous fuel and air for an internal combustion engine is disclosed. The gas mixer may have a housing defining an air path for mixing the gaseous fuel and the air within the air path. The housing may have a narrowed portion. The gas mixer may also have a displacement body axially displaceable and coaxially arranged within the air path. The displacement body and the housing may define an air passage disposed at the narrowed portion. The gas mixer may further have a fuel inlet fluidly connected to the air passage. The fuel inlet may be configured to supply gaseous fuel to the air passage. Further, the gas mixer may have an adjusting unit disposed at least partially within the air path. The adjusting unit may be connected to the displacement body and may be configured to axially displace the displacement body.

Abstract: A cylinder head of a static spark-ignited gas engine may include at least two exhaust ports, at least two inlet ports, at least one cylinder axis, and a bottom side. Each inlet port runs to the bottom side of the cylinder head and may have a valve seat for inlet valve. Each valve seat may have a corresponding center axis. At least one inlet port has a countersink in the border area of the bottom side. The countersink may have an offset axis shifted from the corresponding center axis. The countersink may also have a maximum radius with reference to the corresponding center axis. The maximum radius and a straight line may form an angle ?. The straight line may connect the cylinder axis with the corresponding center axis. The angle ? may fulfill the following condition: 70°<=?<=110°.

Abstract: A piston for an internal combustion engine is disclosed. The piston may have a piston skirt with a centre axis. The piston may also have a piston crown disposed adjacent a top of the piston skirt. The piston crown may have a diameter D. The piston crown may have a piston crown margin of width b extending in a circumferential direction. The piston crown may also have a piston trough with a depth t. The piston trough may have a piston trough wall with a base diameter. The piston trough may also have at least one recess with a height h. The height h parallel to the direction of the centre axis may satisfy the following requirement: 0.2 t<=h<=t.

Abstract: An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfil the following condition with respect to the wall height H: 0.05 H<=T<=0.5H.

Abstract: A piston of an internal combustion engine is disclosed. The piston may have a piston sleeve with a centre axis and a piston base with a diameter D delimiting the piston sleeve at a top of the piston sleeve. The piston base may have a piston base rim of width b and a piston bowl with a depth t. The piston bowl may be designed as a pot bowl, which may have a piston bowl base and a piston bowl wall with a maximum diameter d4 adjoining the piston bowl base. The piston bowl may have an opening cross-section aligned symmetrically relative to the centre axis. The opening cross-section may have a minimum diameter da, which is smaller than the diameter d4. A flow cut-off edge designed as a nose may be formed in the opening cross-section and may project in the radial direction inwards over the piston bowl wall.