Multiple cylinder engine

An internal combustion engine comprising:

• a first piston reciprocatingly disposed in a first cylinder;
• a second piston reciprocatingly disposed in a second cylinder;
• a crankshaft coupled with the first piston and the second piston for rotational motion associated with reciprocating movement of at least one of the first piston and the second piston, the crankshaft configured to be disposed in a generally vertical orientation during operation;
• a combustion chamber fluidly coupled with the first cylinder and the second cylinder;
• an intake valve providing selective fluid communication between an intake system and the combustion chamber, the intake valve being generally centrally disposed within the combustion chamber relative to the first cylinder and the second cylinder and along a split between the first cylinder and the second cylinder;
• an exhaust valve providing selective fluid communication between an exhaust system and the combustion chamber;
• and
• an ignition source at least partially disposed within the combustion chamber.

An internal combustion engine comprising:

• a first piston reciprocatingly disposed in a first cylinder;
• a second piston reciprocatingly disposed in a second cylinder;
• a crankshaft coupled with the first piston and the second piston for rotational motion associated with reciprocating movement of at least one of the first piston and the second piston, the crankshaft configured to be disposed in a generally vertical orientation during operation;
• a combustion chamber fluidly coupled with the first cylinder and the second cylinder;
• an intake valve providing selective fluid communication between an intake system and the combustion chamber, the intake valve being generally centrally disposed relative to a split between the first cylinder and the second cylinder, and the intake valve being at least partially offset relative to a bore centerline of the first cylinder and the second cylinder;
• an exhaust valve providing selective fluid communication between an exhaust system and the combustion chamber;
• and
• an ignition source at least partially disposed within the combustion chamber.