Reciprocating piston internal combustion engine
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorJohannes Hoehl
Life of this patent
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Abstract
A reciprocating piston internal combustion engine includes at least one first, one second and one third cylinder and has a crank mechanism having a crankshaft, which is rotatably mounted in a crankcase, having a first, a second and a third crankpin. A first connecting rod having a first piston for the first cylinder is allocated to the first crankpin. A second connecting rod having a second piston for the second cylinder is allocated to the second crankpin. A third connecting rod having a third piston for the third cylinder is allocated to the third crankpin. The crankpins are arranged successively in an axial direction of the crankshaft, wherein the cylinders are arranged in a fan shape.
Claims20
A reciprocating piston internal combustion engine, comprising:
- first, second, and third cylinders;
- a crank mechanism with a crankshaft mounted rotatably in a crankcase;
- first, second, and third crankpin journals, wherein
- the first crankpin journal is assigned a first connecting rod with a first piston for the first cylinder,
- the second crankpin journal is assigned a second connecting rod with a second piston for the second cylinder,
- the third crankpin journal is assigned a third connecting rod with a third piston for the third cylinder,
- the first, second, and third crankpin journals are arranged sequentially behind one another in an axial orientation of the crankshaft,
- the second cylinder is immediately adjacent to both the first and third cylinders,
- relative to a first axial end of the crankshaft the first cylinder is closest to the first axial end, and
- the first, second, and third cylinders are arranged like a Japanese-style hand held folding fan, such that the second cylinder is disposed in a space between the first cylinder and the third cylinder when view from the first axial end of the crankshaft.
A reciprocating piston internal combustion engine, comprising:
- a crankcase defining first, second, and third cylinders;
- and
- a crankshaft mounted rotatably in the crankcase, wherein
- the crankshaft has first, second, and third crankpin journals,
- each crankpin journal is connected to a respective connecting rod and piston, each piston being disposed in a different cylinder,
- relative to a first axial end of the crankshaft the first crankpin journal is closest to the first axial end,
- the second cylinder is immediately adjacent to both the first and third cylinders, and
- a longitudinal axis of each cylinder extends along a different radial direction of the crankshaft such that the first, second, and third cylinders are arranged like a Japanese-style hand held folding fan, wherein the second cylinder is disposed in a space between the first cylinder and the third cylinder when view from the first axial end of the crankshaft.
Dependencies are inferred from the claim text.