Intake system for internal combustion engine
AssigneeAisin Seiki Kabushiki Kaisha
InventorsEiji Sakagami, Tomohisa Senda
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Abstract
An intake system for an internal combustion engine, includes a rotary valve including a casing provided with a first port, a second port and an outlet port, and a rotatable valve member accommodated in the casing and rotated by an actuator, a first intake passage fluidically connecting a surge tank and the first port, a second intake passage fluidically connecting the surge tank and the second port and a third intake passage fluidically connecting a cylinder and the outlet port, wherein a first state where the outlet port is throttled and at least one of the first port and the second port is opened, or a second state where the outlet port, and at least one of the first port and the second port are opened, is selectively established.
Claims12
An intake system for an internal combustion engine, comprising:
- a rotary valve including a casing having a hollow shape and provided with a first port, a second port and an outlet port, and a rotatable valve member having a valve portion and accommodated in the casing for being rotated in the casing by an actuator:
- a first intake passage fluidically connecting a surge tank and the first port,
- a second intake passage fluidically connecting the surge tank and the second port and being longer than the first intake passage;
- and
- a third intake passage fluidically connecting a cylinder of the combustion engine and the outlet port,
- wherein the rotatable valve member is rotated so that a first state in which the valve portion throttles the outlet port and opens at least one of the first port and the second port, or a second state in which the valve portion opens the outlet port, and at least one of the first port and the second port, is selectively established.
Dependencies are inferred from the claim text.