Patent ID: 7581523

Claim:
An auxiliary arrangement structure in an internal combustion engine, comprising: a cylinder head having an plurality of intake ports, an intake manifold having a plurality of branch pipes connected to the intake ports in the cylinder head, and a throttle body disposed at one end in a direction of arrangement of the plurality of branch pipes, wherein an auxiliary of the internal combustion engine is disposed in a space surrounded by the cylinder head, the intake manifold and the throttle body, wherein an intake pipe length changing mechanism is accommodated in the intake manifold, and an actuator for driving the intake pipe length changing mechanism is mounted on the intake manifold so as to protrude from a side face of the manifold on a side where the throttle body is disposed; wherein the auxiliary protrudes from a side face of the cylinder head on an intake side thereof; and wherein the throttle body is disposed in a space formed between the actuator and the auxiliary.