| 摘要 |
A rotary valve ( 1 ) particularly suitable for use in a turbocharger for an internal-combustion engine, the rotary valve provided between a turbocharger inlet port ( 10 ) and at least first and second scroll passages ( 13, 14 ), the rotary valve rotatable between (a) a position at which at least one scroll passage is blocked and a bypass outlet is blocked, (b) a position at which no scroll passage is blocked and the bypass outlet is blocked, and (c) a position at which no scroll passage is blocked and the bypass outlet is not blocked. The control valve is rotatable about a central axis, includes a disk-shaped base ( 2 ) and a control surface ( 4 ) provided upon said base, the control surface preferably being generally wedge shaped, and the disk optionally having an aperture ( 7 ) for communication with the bypass outlet. The rotary valve is preferably mounted on both sides via a shaft ( 112 a , 112 b) extending through the axis of rotation.
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