Vehicle including a variable intake pipe length device

A vehicle including an intake passage for inducing air from an air cleaner box to an intake port of an engine, comprising:

• a variable intake pipe length device including:
• an intake pipe including a fixed funnel, a movable funnel movable relative to said fixed funnel and a rotating part,
• an actuator capable of providing a driving force to adjust the length of said intake pipe according to a condition of the engine,
• wherein said intake pipe is provided in the intake passage for inducing air from the air cleaner box to the intake port of the engine,
• wherein said rotating part of said intake pipe is rotationally driven by said actuator, and said movable funnel is moved by rotating said rotating part of said intake pipe, thereby varying the length of said intake pipe,
• wherein said fixed funnel and said movable funnel have a same axis, in a length-wise direction thereof,
• wherein said rotating part of said intake pipe is a rotating pipe, said rotating pipe comprising a spiral slit formed at a cylindrical portion of said rotating pipe, and
• wherein said movable funnel includes an inward projection engaged with said spiral slit, such that when said rotating pipe is rotated, said movable funnel is moved by the rotation of said spiral slit to thereby vary the length of said intake pipe.