Abstract: An internal combustion engine has an intake device having an air filter and at least one port. Combustion air is sucked in from the clean side of the air filter to the internal combustion engine via the port. The intake device has air trunking, in which at least a first section and a second section of the port are guided. The air trunking has a longitudinal center axis, wherein combustion air flows in the first section of the port in a first direction of flow running in the direction of the longitudinal center axis. The combustion air flows in the second section of the port in a second direction of flow oriented in an opposite direction to the first direction of flow and in the direction of the longitudinal center axis. As a result, a compact overall size is achieved with port length.

Abstract: A cylinder (2) for a combustion engine has a cylinder bore (42) and a cylinder wall (43). At least one channel is formed in the cylinder wall (43). At least one cover (19), which at least partially closes the channel on the side facing away from the cylinder bore (42), is arranged on the cylinder (2). A very precise channel geometry which can be easily manufactured is achieved in that a first stop (25) is formed in the longitudinal direction of the cylinder between the cylinder (2) and the cover (19) and a second stop (33) is formed in the tangential direction with respect to the cylinder bore (42), with the cover (19) resting on the cylinder (2) at the first stop (25) and at the second stop (33).

Abstract: An internal combustion engine has an intake device having an air filter and at least one port. Combustion air is sucked in from the clean side of the air filter to the internal combustion engine via the port. The intake device has air trunking, in which at least a first section and a second section of the port are guided. The air trunking has a longitudinal center axis, wherein combustion air flows in the first section of the port in a first direction of flow running in the direction of the longitudinal center axis. The combustion air flows in the second section of the port in a second direction of flow oriented in an opposite direction to the first direction of flow and in the direction of the longitudinal center axis. As a result, a compact overall size is achieved with port length.

Abstract: An internal combustion engine has a cylinder liner arranged in the cylinder. A piston moves reciprocatingly in a direction of the longitudinal cylinder axis in the cylinder and is guided within the cylinder liner across a section of a movement path of the piston in the cylinder. A combustion chamber disposed in the cylinder is delimited by the piston. In a crankcase, a crankshaft is rotatably supported by a crankshaft bearing, wherein the crankshaft is driven in rotation by the piston about an axis of rotation of the crankshaft. A position of the cylinder liner relative to the crankcase is secured with form fit by a securing element located at an end face of the cylinder liner that is facing the crankcase. No loads are transmitted into the cylinder liner from the crankshaft bearing through the end face of the cylinder liner that is facing the crankcase.

Abstract: A cylinder (2) for a combustion engine has a cylinder bore (42) and a cylinder wall (43). At least one channel is formed in the cylinder wall (43). At least one cover (19), which at least partially closes the channel on the side facing away from the cylinder bore (42), is arranged on the cylinder (2). A very precise channel geometry which can be easily manufactured is achieved in that a first stop (25) is formed in the longitudinal direction of the cylinder between the cylinder (2) and the cover (19) and a second stop (33) is formed in the tangential direction with respect to the cylinder bore (42), with the cover (19) resting on the cylinder (2) at the first stop (25) and at the second stop (33).