Outboard motor

1. An outboard motor comprising:

an engine including a piston that reciprocates rectilinearly and a crankshaft that rotates around a crankshaft axis extending in an up-down direction;

an engine cover that covers the engine;

an intake pipe disposed between an outer surface of the engine and an inner surface of the engine cover and connected to a first outer surface of the engine along the crankshaft axis to supply air to the engine; and

a battery disposed between a second outer surface of the engine, which is different from the first outer surface, and the inner surface of the engine cover.

2. The outboard motor according to claim 1 , wherein the second outer surface extends along the crankshaft axis.

3. The outboard motor according to claim 2 , wherein the engine includes an engine body including a cylinder containing the piston and a crankcase containing the crankshaft; and

the second outer surface is disposed on a surface of the crankcase.

4. The outboard motor according to claim 3 , wherein the second outer surface is located such that the engine body is between the first outer surface and the second outer surface.

5. The outboard motor according to claim 1 , wherein the second outer surface is located at a more rearward position than the crankshaft axis.

6. The outboard motor according to claim 1 , wherein the second outer surface extends along a direction along which the piston reciprocates.

7. The outboard motor according to claim 6 , wherein

the engine includes a cylinder head to which the intake pipe is connected; and

the second outer surface includes an upper surface of the cylinder head.

8. The outboard motor according to claim 1 , further comprising a fuel supply disposed between the outer surface of the engine and the inner surface of the engine cover and that supplies fuel to the engine; wherein

the battery is spaced apart from the fuel supply.

9. The outboard motor according to claim 1 , wherein the battery is located on the inner surface of the engine cover that faces the second outer surface.

10. The outboard motor according to claim 1 , wherein the battery is located on the second outer surface.

11. The outboard motor according to claim 10 , wherein the battery includes an installation surface that faces the second outer surface and extends along the second outer surface.

12. The outboard motor according to claim 11 , wherein the battery is a box-shaped or substantially box-shaped; and

the installation surface is one outer surface of the box-shaped battery, and is wider than other outer surfaces of the battery.

13. The outboard motor according to claim 12 , wherein the battery includes a mount disposed on an outer surface of the battery that is continuous with an edge of the installation surface to mount the battery on the engine.

14. The outboard motor according to claim 1 , further comprising a battery cover that covers the battery and includes a first flow passage through which cooling water flows.

15. The outboard motor according to claim 14 , further comprising a second flow passage through which cooling water that is used to cool the engine flows; wherein

the first flow passage branches from the second flow passage.

16. The outboard motor according to claim 1 , wherein the engine cover includes an outside-air intake port to take in outside air; and

the battery faces the outside-air intake port.

17. The outboard motor according to claim 16 , wherein the battery is disposed directly under the outside-air intake port.

18. The outboard motor according to claim 1 , wherein the engine includes a plurality of cylinders arranged in the up-down direction.