Multicylinder internal combustion engine

A multicylinder internal combustion engine comprising:

• a cylinder head with engine valves arranged therein;
• valve actuators for openably operating said engine valves, respectively;
• a cylinder head cover forming, in combination with said cylinder head, a valve actuator chamber with said valve actuators accommodated therein, at least some of said valve actuators being deactivatable to disable their corresponding cylinders;
• and
• a crankshaft,
• wherein said multicylinder internal combustion engine is a V-shaped internal combustion engine provided with a front bank and rear bank, the cylinders on opposite ends of the crankshaft in said front bank are set as said deactivatable cylinders, and the cylinders in said rear bank are set as full-time operating cylinders,
• wherein each of the deactivatable cylinders are connected to a position on the crankshaft further toward the end of the crankshaft than each of the full-time operating cylinders is connected.

A multicylinder internal combustion engine comprising:

• a cylinder head with engine valves arranged therein;
• valve actuators for openably operating said engine valves, respectively;
• a cylinder head cover forming, in combination with said cylinder head, a valve actuator chamber with said valve actuators accommodated therein, at least some of said valve actuators being deactivatable to disable their corresponding cylinders;
• and
• a crankshaft,
• wherein said multicylinder internal combustion engine is an inline internal combustion engine, the two cylinders at a central part of the crankshaft are constructed as full-time operating cylinders that are fired at equal intervals, the cylinders on opposite end sides of said crankshaft are constructed as deactivatable cylinders, respectively, and an operation mode of said inline internal combustion engine is selectively changeable to one of operation modes consisting of an operation mode in which one of said deactivatable cylinders on the opposite end sides of said crankshaft is disabled, another operation mode in which both of said deactivatable cylinders are disabled, and a further operation mode in which both of said deactivatable cylinders are operated,
• wherein each of the deactivatable cylinders are connected to a position on the crankshaft further toward the end of the crankshaft than each of the full-time operating cylinders is connected.