Variable capacity turbine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorAtsushi Matsuo
Life of this patent
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Abstract
There is provided a variable capacity turbine that is capable of suppressing separation from an outer peripheral face of an involute dividing wall at an inlet portion of an outer scroll, enhancing performance, and increasing a flow rate. The variable capacity turbine includes: a turbine housing having an involuted scroll formed therein; a turbine wheel rotatably provided on an inner periphery side of the scroll; the involute dividing wall mounted on the turbine housing to divide the scroll into an inner scroll and the outer scroll; and a flow regulating valve for opening and closing an introducing port formed at an inlet end of the outer scroll. The inlet portion of the outer scroll is formed to have a continuous and gentle throttle flow path from an upstream side to a downstream side.
Claims6
A variable capacity turbine comprising:
- a turbine housing having an involuted scroll formed therein;
- a turbine wheel rotatably provided on an inner periphery side of the scroll;
- an involute dividing wall mounted on the turbine housing to divide the scroll into an inner scroll and an outer scroll;
- and
- a flow regulating valve for opening and closing an introducing port formed at an inlet end of the outer scroll, wherein
- an inlet portion of the outer scroll is formed to have a continuous and gentle throttle flow path from an upstream side to a downstream side.
A variable capacity turbine comprising:
- a turbine housing having an involuted scroll formed therein;
- a turbine wheel rotatably provided on an inner periphery side of the scroll;
- an involute dividing wall mounted on the turbine housing to divide the scroll into an inner scroll and an outer scroll;
- and
- a flow regulating valve for opening and closing an introducing port formed at an inlet end of the outer scroll, wherein
- an inner peripheral surface of the flow control valve is a flat face and the flow control valve is formed so that the flat face and a central axis of an inlet flange forming an inlet portion of the turbine housing become substantially parallel with each other when the valve is fully open.
A variable capacity turbine comprising:
- a turbine housing having an involuted scroll formed therein;
- a turbine wheel rotatably provided on an inner periphery side of the scroll;
- an involute dividing wall mounted on the turbine housing to divide the scroll into an inner scroll and an outer scroll;
- and
- a flow regulating valve for opening and closing an introducing port formed at an inlet end of the outer scroll, wherein
- the flow regulating valve is formed to move parallel between positions at times when the flow rate is high and low so that a turning angle of a fluid passing through the introducing port is maintained constant at any of times when the flow rate is low, the flow rate is high, the flow rate shifts from a low rate to a high rate, and the flow rate shifts from the high rate to the low rate.
Dependencies are inferred from the claim text.