Internal combustion engine and use of internal combustion engine

An internal combustion engine having a plurality of cylinders disposed in a vertical or horizontal row, with each cylinder accommodating a piston for sliding therein, a cylinder block in which the cylinders are formed, a cylinder head covering the combustion chambers side of the cylinders, a crankshaft driven for rotation with the pistons and disposed with its axis in the vertical or horizontal direction, and exhaust passages are connected to a collective exhaust passage extending downward or rearward for exhaustion. An intake pipe connected to an intake passage is disposed above the collective exhaust passage in the state of partially overlapping with the collective exhaust passage in plan view.