Patent ID: 6997157

Claim:
An intake device for an internal combustion engine having an in-line cylinder bank, comprising: an intake manifold assembly defining a surge tank adjacent to a throttle valve end of said assembly and a plurality of individual intake pipes each including a pair of intake pipe sections branching off from each other and leading to a cylinder head end of said assembly; a selection valve rotatably supported by a selection valve supporting portion in one of said two intake pipe sections of each individual intake pipe for selectively closing the corresponding intake pipe section; and a vacuum actuator provided adjacent to said intake manifold assembly for actuating said selection valve by selectively supplying intake negative pressure thereto; wherein the intake manifold assembly comprises at least three blocks each molded from a plastic material by injection molding, the three blocks consisting of a first block defining a half of the surge tank, a second block defining a half of the individual intake pipes and a third block defining a remaining half of the surge tank and a remaining half of the individual intake pipes.