Reciprocating-piston internal combustion engine
AssigneeMan Truck & Bus AG
InventorJochen Cypris
Life of this patent
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Abstract
A reciprocating combustion engine includes at least one cylinder, in which a reciprocating piston is arranged back and forth movable. The reciprocating combustion engine includes a pin structure arranged on the combustion chamber side in the area of the cylinder head or the piston bottom. Due to the pin structure, local peak temperatures can be avoided during the combustion process, so that NOx emissions can be avoided or at least greatly reduced. A motor vehicle, for example a commercial vehicle, includes a reciprocating combustion engine.
Claims16
A reciprocating-piston internal combustion engine, comprising at least one cylinder in which a reciprocating piston is disposed so as to be movable in a reciprocating manner, a cylinder head, the reciprocating piston having a piston crown, a combustion chamber formed between the cylinder head and the piston crown, wherein a pin structure comprising a plurality of pins is disposed in the combustion chamber in the region of the cylinder head or of the piston crown, and further comprising a baffle pin being disposed in the region of the pin structure for deflecting or distributing introduced fuel toward the pin structure, wherein the baffle pin comprises at least one of the following attributes:
- a) a diameter of the baffle pin is larger than a diameter of the pins,
- b) the baffle pin is shorter than the pins.
A motor vehicle, comprising:
- a reciprocating-piston internal combustion engine, the reciprocating-piston internal combustion engine including at least one cylinder in which a reciprocating piston disposed so as to be movable in a reciprocating manner, a cylinder head, the reciprocating piston having a piston crown, a combustion chamber formed between the cylinder head and the piston crown, wherein a pin structure comprising a plurality of pins is disposed in the combustion chamber in the region of the cylinder head or of the piston crown;
- and further comprising a baffle pin being disposed in the region of the pin structure for deflecting or distributing introduced fuel toward the pin structure, wherein the baffle pin comprises at least one of the following attributes:
- a) a diameter of the baffle pin is larger than a diameter of the pins,
- b) the baffle pin is shorter than the pins.
Dependencies are inferred from the claim text.