| 摘要 |
An intake system for a multicylinder internal combustion engine includes a plenum for supplying air to the engine's cylinder, a plenum throttle for admitting air into the plenum, a low speed runner extending between the plenum and at least one intake port formed in the cylinder head, a high speed runner extending between the plenum and the intake port, and a secondary throttle interposed between the runners and the intake port, such that the secondary throttle controls flow in both the high speed and low speed runners.
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