JP2012202328A - Air intake device for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air intake device for an internal combustion engine having a fluid control valve for producing three states of a tumbling state, a swirling state and a full open state in response to driving of one actuator.SOLUTION: An air intake device 1 comprises a valve 5 for generating an air current in a combustion chamber and one actuator 6 for driving the valve 5. The valve 5 includes an SCV 40S for generating a swirling current and a TCV 40T for generating a tumbling current. The air intake device 1 comprises transfer means which transfers a driving force to the SCV 40S and the TCV 40T and driving the SCV 40S and the TCV 40T with operations being different, respectively. Thus, one actuator 6 produces the state of closing only the SCV 40S, the state of closing only the TCV 40T and the state of opening both the SCV 40S and the TCV 40T. Namely, one actuator 6 is driven to produce three states of a tumbling state, a swirling state and a full open state.

Description

  The present invention relates to an intake device for an internal combustion engine that controls intake air supplied to a combustion chamber of the internal combustion engine.

Conventionally, it has been known that generating a tumble flow for reducing pumping loss when the internal combustion engine is under low load and generating a swirl flow for reducing knock during high load are effective in improving fuel efficiency. Yes.
These airflows are created by changing the flow passage cross-sectional area and position of the intake flow passage with the fluid control valve. Note that when a high torque is required, a sufficient intake amount is required, so that the flow passage cross-sectional area of the intake flow passage in the fluid control valve needs to be maximized.

  In other words, the fluid control valve needs to be able to create at least three states: a state that generates a tumble flow (tumble state), a state that generates a swirl flow (swirl state), and a state that maximizes the intake passage area (fully open state). There is.

  Therefore, in Patent Document 1, in order to generate a tumble flow and a swirl flow separately, two ports (first port and second port) connected to the combustion chamber are provided, and a TCV (tumble control valve) is provided in the first port. ), An SCV (swirl control valve) is provided in the second port, and a technique for driving TCV and SCV arranged side by side (in a direction perpendicular to the flow path) by separate actuators is disclosed.

  However, since this technique requires two actuators, there is a problem that the physique becomes large and the cost increases. In addition, since two ports connected to the combustion chamber are arranged side by side and the tumble flow created by the TCV enters from the first port, there is also a problem that the tumble flow rotates sideways in the combustion chamber.

  Patent Document 2 discloses a technique for driving two SCVs having different rotation axes by one actuator, but there is a description about the point that the two SCVs are independently rotated without being synchronized. Absent.

JP-A-7-229424 JP-A-7-247850

  The present invention has been made to solve the above-described problems, and an object thereof is an internal combustion engine having a fluid control valve that generates three states of a tumble state, a swirl state, and a fully open state by driving one actuator. An object of the present invention is to provide an engine intake device (hereinafter, “intake device of an internal combustion engine” is simply referred to as “intake device”).

[Means of Claim 1]
An intake device according to claim 1 is a housing in which an air flow path communicating with an intake port of an internal combustion engine is formed, and a fluid that is rotatably supported and varies a flow path cross-sectional area of the air flow path of the housing. A control valve and one actuator for driving the fluid control valve are provided.

The actuator drives the fluid control valve into three states, a tumble state, a swirl state, and a fully open state.
Here, the “tumble state” is a valve state in which only the upper part of the air flow path is opened to form a tumble flow, and the “swirl state” is a state in which only the left and right sides of the air flow path are opened. The “full open state” is a valve state that maximizes the cross-sectional area of the flow path.
The upper direction is an upper direction of the piston movement direction in the combustion chamber, and the left-right direction is a direction substantially orthogonal to the piston movement direction.

  According to this, since the fluid control valve is driven by one actuator to create three states, a tumble state, a swirl state, and a fully open state, the physique of the intake device is made larger than when a plurality of actuators are used. While being able to make it small, cost can also be made small.

[Means of claim 2]
According to the intake device of the second aspect, the fluid control valve includes a swirl control valve (hereinafter referred to as SCV) that generates a swirl flow and a tumble control valve (hereinafter referred to as TCV) that generates a tumble flow. .
SCV and TCV are provided side by side in the flow direction of the air flow path.
Further, the intake device includes a transmission unit that transmits the driving force of the actuator to the SCV and the TCV, and the transmission unit is configured to drive the SCV and the TCV with different movements by linking or disengaging the link mechanism or the driving force transmission. Has been.

According to this, when the TCV is in a valve closing state that closes the air flow path in the housing, it becomes a tumble state, and when the SCV is in a valve closing state that closes the air flow path in the housing, it becomes a swirl state. Are in the fully open position when they are in the fully open position that maximizes the cross-sectional area of the air flow path in the housing.
Then, the SCV and TCV are moved differently with respect to the displacement by the same actuator by the transmission means, and only one SCV is closed, only the TCV is closed, and both the SCV and TCV are opened by one actuator. Move to a valved state.
Thus, the same effect as that of the first aspect can be achieved.

[Means of claim 3]
According to the intake device of the third aspect, each of the SCV and the TCV is a rotary valve having a valve portion extending in the rotation direction at a position radially away from the rotation shaft that is rotatably supported. . That is, it is a swing-type rotary valve.
The valve portion of the TCV has a tumble passage that opens at the upper end in the valve closing position, and the valve portion of the SCV has a swirl passage that opens either the left or right in the valve closing position. .

Each valve portion reciprocates in a substantially vertical direction with respect to the intake port of the housing by rotation of the rotation shaft, thereby changing the flow path cross-sectional area.
This means shows one aspect of the SCV and TCV valve structures.

[Means of claim 4]
According to the intake device of the fourth aspect, the transmission means can be engaged with the drive gear that is rotated by the actuator, the SCV gear that can be engaged with the drive gear and the rotation shaft of the SCV, and the drive gear. And a TCV gear that rotates the rotation axis of the TCV.
The drive gear, the SCV gear, and the TCV gear each have a missing tooth portion with missing gear teeth. When the drive gear meshes with the SCV gear, the TCV gear does not mesh with the drive gear, When the driving force is transmitted only to the SCV gear and the driving gear meshes with the TCV gear, the SCV gear does not mesh with the driving gear, and the driving force is transmitted only to the TCV gear.
This means shows one mode of the transmission means.

[Means of claim 5]
According to the intake device of the fifth aspect, the transmission means is a link mechanism provided between the SCV rotation shaft and the TCV rotation shaft.
This means uses a link mechanism to change the drive force transmission state from the actuator to the SCV rotation shaft and the drive force transmission state from the actuator to the TCV rotation shaft, thereby reducing the SCV against the rotation of the actuator. The rotation state of TCV is different from the rotation state of TCV.

For example, by designing the link mechanism so that the rotation angle of the SCV with respect to the predetermined rotation angle of the actuator is different from the rotation angle of the TCV with respect to the predetermined rotation angle of the actuator, And TCV move differently.
This means shows one mode of the transmission means.

[Means of claim 6]
According to the intake device of the sixth aspect, the transmission means can be engaged with a rotating body (hereinafter referred to as a driving rotating body) rotated by an actuator, and the driving rotating body in the rotating direction, and can rotate the SCV. A rotating body (hereinafter referred to as an SCV rotating body) for rotating a moving shaft, and a rotating body (hereinafter referred to as a TCV rotating body) that can be engaged with a driving rotating body in a rotating direction and rotate a rotating shaft of the TCV. And a ratchet mechanism provided between the drive rotation body and the SCV rotation body and between the drive rotation body and the TCV rotation body.

In other words, the ratchet mechanism can be used to engage / disengage between the drive rotating body and the SCV rotating body and between the drive rotating body and the TCV rotating body, and when the drive rotating body is engaged with the SCV rotating body. In this case, the TCV rotating body is not engaged with the driving rotating body, and the driving force is transmitted only to the SCV rotating shaft, so that only the SCV can be driven.
Further, when the drive rotating body is engaged with the TCV rotating body, the SCV rotating body is not engaged with the drive rotating body, the driving force is transmitted only to the rotating shaft of the TCV, and only the TCV is driven. Can do.
This means shows one mode of the transmission means.

[Means of Claim 7]
According to the intake device of the seventh aspect, the drive rotating body, the SCV rotating body, and the TCV rotating body are arranged coaxially, and the drive rotating body is provided on the outer periphery of the SCV rotating body and the TCV rotating body.
The ratchet mechanism is provided on the outer periphery of each of the SCV rotating body and the TCV rotating body and is movable in a radial direction, and is provided on the inner periphery of the driving rotating body and is engageable with the movable pin. The SCV rotating body and the TCV rotating body rotate to contact the movable pin, and the fixed pin displaces the movable pin radially inward.
This means shows one aspect of the ratchet mechanism.

[Means of Claim 8]
According to the intake device of the eighth aspect, the transmission means includes a pressing member that is rotated by an actuator, a first shaft that has a first lever that can be engaged with the pressing member in a rotating direction, and the pressing member and the rotation member. And a second shaft having a second lever that can be engaged in the moving direction.

In the rotation direction of the pressing member, the position where the pressing member engages with the first lever is different from the position where the pressing member engages with the second lever, and the pressing member engages with the first lever and rotates. When driving, the driving force is transmitted to the first shaft, and when the pressing member is engaged with the second lever and rotated, the driving force is transmitted to the second shaft. The SCV rotates with the rotation of either the first shaft or the second shaft, and the TCV rotates with the rotation of either the first shaft or the second shaft.
This means shows one mode of the transmission means.

[Means of Claim 9]
According to the intake device of the ninth aspect, the first shaft is one of the rotation shafts of SCV or TCV, and the second shaft is the other rotation shaft of either SCV or TCV.
This means shows one mode of the connection relationship between the first shaft and the second shaft and the SCV and TCV.

[Means of Claim 10]
According to the intake device of the tenth aspect, the first shaft is one of the rotation shafts of SCV or TCV, and the second shaft is either SCV or TCV via a gear or a link mechanism. A driving force is transmitted to the other rotating shaft.
This means shows one mode of the connection relationship between the first shaft and the second shaft and the SCV and TCV.

[Means of Claim 11]
According to the intake device of the eleventh aspect, each of the SCV and the TCV is a cantilever valve.
The SCV rotation shaft and the TCV rotation shaft have a double structure arranged substantially coaxially.

  Further, the transmission means is provided on either the SCV rotation shaft or the TCV rotation shaft, and is rotated by an actuator (hereinafter referred to as A joint), and the SCV rotation shaft or the TCV rotation shaft. And a joint (hereinafter referred to as a B joint) that can be engaged with the A joint in the rotation direction.

The A joint transmits the driving force to either the SCV rotation shaft or the TCV rotation shaft by engagement with the B joint, and the A joint and the B joint are not engaged with each other. Then, the driving force is transmitted only to either the SCV rotation shaft or the TCV rotation shaft.
This means shows one mode of the transmission means in the case of a cantilever valve.

[Means of Claim 12]
According to the intake device of the twelfth aspect, the fluid control valve has a valve portion that extends in a rotation direction at a position radially away from a rotation shaft that is rotatably supported. The rotary valve can change the cross-sectional area of the flow path by reciprocating up and down or left and right with respect to the intake port of the housing by the rotation of the rotation shaft. That is, it is a swing-type rotary valve.

The valve portion includes a tumble formation region that forms a tumble flow and a swirl formation region that forms a swirl flow.
As a result, when the valve portion closes the intake port in the tumble formation region, the valve portion is in a tumble state, and when the valve portion closes the intake port in the swirl formation region, the valve portion enters a swirl state and the valve portion does not close the intake port. The position is fully open.
Thus, the actuator switches between the three states by rotating the fluid control valve to change the valve position.

  According to this, by providing a tumble formation region and a swirl formation region in the valve portion of one valve body, three states (tumble state, swirl state, fully open state) can be achieved by rotating one actuator. Can be switched.

[Means of Claim 13]
According to the intake device of the thirteenth aspect, the fluid control valve has the flow path cross-sectional area as the valve portion reciprocates substantially vertically with respect to the intake port of the housing by the rotation of the rotation shaft. This is a variable rotary valve.
The valve portion has a tumble passage that opens at the upper end at the first valve position and a swirl passage that opens at either the left or right at the second valve position, and is in a tumble state at the first valve position. In the second valve position, a swirl state is established.
This means shows one mode of a fluid control valve having a tumble formation region for forming a tumble flow and a swirl formation region for forming a swirl flow in a valve portion.

[Means of Claim 14]
According to the intake device of the fourteenth aspect, the fluid control valve has the flow path cross-sectional area variable by reciprocating the valve portion in the left-right direction with respect to the intake port of the housing by the rotation of the rotation shaft. It is a rotary valve.
The valve portion includes a tumble passage that opens at the upper end at the first valve position, and a closing portion that closes a predetermined region on either the left or right of the downstream opening at the second valve position, At the first valve position, only the tumble passage is opened to be in a tumble state, and at the second valve position, only a predetermined region on either the left or right side of the downstream side opening is opened to enter a swirl state.
This means shows one mode of a fluid control valve having a tumble formation region for forming a tumble flow and a swirl formation region for forming a swirl flow in a valve portion.

(Example 1) which is the front view of the intake device seen from the upstream. (Example 1) which is sectional drawing in the direction perpendicular | vertical to the flow path of an intake device. (Example 1) which is a perspective view of a valve | bulb. (A) (c) (e) is AA sectional drawing of FIG. 1, (b) (d) (f) is a B view of (a) (c) (e) (Example) 1). (Example 2) which is a perspective view of an intake device. (A)-(c) is a front view of the intake device seen from the downstream (Example 2). (Example 3) which is a perspective view of an intake device. (Example 3) which is explanatory drawing explaining the rotation angle of SCV, an intermediate | middle gear, and TCV. (A)-(c) is explanatory drawing which shows the operation | movement in the rotation direction of SCV and TCV. (Example 3). (Example 4) which is a perspective view of an intake device. (A)-(d) is explanatory drawing which shows the operation | movement in the rotation direction of SCV and TCV (Example 4). (Example 5) which is a disassembled perspective view explaining each element of an intake device. (A)-(c) is a figure which shows operation | movement in the rotation direction of SCV and TCV accompanying the operation | movement of a clutch mechanism, and this (Example 5). (A)-(c) is a figure which shows operation | movement in the rotation direction of SCV and TCV accompanying the operation | movement of a clutch mechanism, and this (Example 5). (Example 6) which is a perspective view of an intake device. (Example 6) which is a disassembled perspective view explaining each element of an intake device. (A)-(c) shows the operation | movement in the rotation direction of SCV, (d)-(f) is explanatory drawing which shows the operation | movement in the rotation direction of TCV (Example 6). (Example 7) which is a perspective view of an intake device. (Example 7) which is a disassembled perspective view explaining each element of an intake device. (A)-(c) shows the operation | movement in the rotation direction of SCV, (d)-(f) is explanatory drawing which shows the operation | movement in the rotation direction of TCV (Example 7). (Example 8) which is a perspective view explaining each element of an intake device. (A)-(c) is explanatory drawing which shows the operation | movement in the rotation direction of SCV and TCV, (d)-(f) is the figure which looked at (a)-(c) from the upstream. (Example 8).

  (1) An intake device according to a first embodiment for carrying out the present invention includes a housing in which an air flow path communicating with an intake port of an internal combustion engine is formed, and a rotatably supported air flow in the housing. A fluid control valve having a variable path cross-sectional area and one actuator for driving the fluid control valve are provided.

The fluid control valve is a rotary valve that varies the cross-sectional area of the flow path when the valve portion reciprocates in a substantially vertical direction with respect to the intake port by the rotation of the rotation shaft.
The valve portion has a tumble passage that opens at the upper end at the first valve position, and a swirl passage that opens at either the left or right at the second valve position.
Therefore, the first valve position is in a tumble state, the second valve position is in a swirl state, and the third valve position in which the valve portion does not close the intake port is in a tumble state.

  (2) In the intake device according to the second embodiment for carrying out the present invention, the fluid control valve is configured such that the valve portion reciprocally moves in the left-right direction with respect to the intake port by the rotation of the rotation shaft. This is a rotary valve whose cross-sectional area is variable.

(3) In the intake device of the third embodiment for carrying out the present invention, the fluid control valve includes the SCV that generates the swirl flow and the TCV that generates the tumble flow. The SCV and the TCV are the air flow. It is provided side by side in the flow direction of the road, and includes a transmission means for transmitting the driving force of the actuator to the SCV and TCV.
SCV and TCV are rotary valves each having a valve portion extending in the rotational direction at a position radially away from a rotational shaft that is rotatably supported.
The transmission means is a link mechanism provided between the SCV rotation shaft and the TCV rotation shaft.

(4) In the intake device of the fourth embodiment for carrying out the present invention, the transmission means includes a drive gear that is rotated by an actuator, and an SCV gear that can be engaged with the drive gear and rotate the rotation shaft of the SCV. And a TCV gear that can mesh with the drive gear and rotate the rotation shaft of the TCV.
When the drive gear meshes with the SCV gear, the TCV gear does not mesh with the drive gear, and the driving force is transmitted only to the SCV gear. When the drive gear meshes with the TCV gear, only the TCV gear The driving force is transmitted to.

  (5) In the intake device according to the fifth aspect for carrying out the present invention, the transmission means is a ratchet mechanism. That is, the ratchet mechanism engages / disengages the driving force transmission between the actuator and the SCV and between the actuator and the TCV, and drives the SCV and the TCV with different movements.

(6) In the intake device of the sixth embodiment for carrying out the present invention, the transmission means includes a pressing member that is rotated by an actuator, and a first shaft that has a first lever that can be engaged with the pressing member in the rotating direction. And a second shaft having a second lever that can be engaged with the pressing member in the rotation direction.
When the pressing member engages with the first lever and rotates, the driving force is transmitted to the first shaft, and when the pressing member engages with the second lever and rotates. The driving force is transmitted to the second shaft, but the position at which the pressing member engages with the first lever differs from the position at which the pressing member engages with the second lever in the rotation direction of the pressing member. Therefore, the first shaft and the second shaft behave differently.
The first shaft and the second shaft are SCV and TCV rotation axes.

  (7) In the intake device of the seventh embodiment for carrying out the present invention, the first shaft is one of the rotation shafts of SCV and TCV, and the second shaft is SCV via a gear or a link mechanism. Alternatively, the driving force is transmitted to the other rotation shaft of the TCV.

(8) In the intake device of the eighth embodiment for carrying out the present invention, SCV and TCV are each cantilever valves.
The transmission means is provided on either the SCV rotation shaft or the TCV rotation shaft, and is either a joint rotated by an actuator (hereinafter referred to as “A joint”), an SCV rotation shaft, or a TCV rotation shaft. Or a joint (hereinafter referred to as a B joint) that can be engaged with the A joint in the rotation direction.
The A joint transmits a driving force to either the SCV rotation shaft or the TCV rotation shaft by engagement with the B joint. In the angular region where the A joint and the B joint are not engaged, the driving force is transmitted only to either the SCV rotation shaft or the TCV rotation shaft.

[Example 1]
Example 1 will be described with reference to FIGS.
In the present embodiment, the vertical direction is the direction of piston movement in the combustion chamber, and the horizontal direction (left-right direction) is the direction substantially perpendicular to the piston movement direction.
The intake device 1 includes a housing 3 that forms an intake passage 2 therein, a shaft 4 (rotation shaft) that is rotatably supported by the housing 3, and rotates together with the shaft 4 around the shaft 4. Used to detect the opening degree of the valve 5, a valve 5 (fluid control valve) that changes the passage cross-sectional area, an electric actuator that drives the valve 5 via the shaft 4 (hereinafter referred to as actuator 6). A rotation angle sensor (not shown).

The housing 3 has a housing body 9 and a duct 10 that forms a plurality of intake passages 2 communicating with combustion chambers for each cylinder of the engine, and has intake ports 11 on the upstream side and the downstream side.
The housing body 9 has a plurality of accommodating portions 12 that accommodate the ducts 10, and the ducts 10 are arranged in the accommodating portions 12, respectively. Note that a coupling portion 13 that couples to the housing body 9 is provided at the upstream end of the duct 10.

  The duct 10 forms intake passages 2 having a square cross section corresponding to the number of cylinders, and each intake passage 2 is independently connected to each intake port (not shown) of the cylinder head. . Then, outside air flows into the intake port via the throttle body, surge tank, intake manifold, and duct 10 of the electronic throttle device.

The shaft 4 is disposed in the housing 3 such that the axial direction is perpendicular to the flow direction of the intake passage 2 and along the direction in which the plurality of intake passages 2 are arranged.
That is, a space is provided above the duct 10 with the housing body 9, and the shaft 4 is disposed in this space so as to pass above the plurality of ducts 10, and both ends of the shaft 10 are disposed on the housing body 9. Is held rotatably.

The shaft 4 is formed by insert-molding a metal shaft 17 having a polygonal cross section perpendicular to the axial direction.
That is, the outer periphery of the metal shaft 17 is covered with resin. The shaft 4 is provided with exposed portions 19 where the metal shaft 17 is exposed without being covered with resin, and the exposed portions 19 are supported by bearing portions 20 provided on the housing body 9.
The shaft 4 holds a valve 5 that opens and closes the downstream opening of each duct 10.

The valve 5 is fixed to the shaft 4 and accommodated in the housing 3 so as to be rotatable together with the shaft 4.
The valve 5 has a valve plate 5 a (valve portion) extending in a rotational direction at a position radially away from the shaft 4, and the valve plate 5 a is downstream on the downstream side of the duct 10 by the rotation of the shaft 4. This is a rotary valve that varies the cross-sectional area of the flow path by reciprocating up and down along the open end 25 (see FIGS. 3 and 4).

  The valve plate 5a is formed in a circumferential wall shape extending in the rotational direction, and both the radially inner surface and the radially outer surface are curved surfaces. And the end surface of the downstream opening end 25 of the duct 10 has a curved surface along the radially inner surface.

  That is, the valve 5 includes a valve plate 5a and a side plate 5b that is formed extending from the left and right ends of the valve plate 5a and is held by the shaft 4. This is a swing-type rotary valve in which the plate 5a is suspended in the shape of a swing (for details of the structure of the swing-type rotary valve, see, for example, Japanese Patent Application Laid-Open No. 2010-242618).

  The side plate 5b has a hole 27 through which the shaft 4 passes. The shaft 4 is inserted into the hole 27 and is fixed to the shaft 4 so as to be rotatable integrally with the shaft 4.

  The actuator 6 includes an electric motor (not shown) that rotates upon receipt of electric power, and a speed reduction mechanism that decelerates the rotation of the electric motor and transmits it to the shaft 4. In addition, you may be comprised only with the electric motor.

[Features of Example 1]
The valve plate 5a has a tumble formation region 31 that forms a tumble flow and a swirl formation region 32 that forms a swirl flow.
In the present embodiment, in the valve plate 5a, when moving upward along the downstream opening end 25 by the rotation of the shaft 4, the rotation progression direction side is defined as the upper side, and the counter-rotation progression side is defined as the lower direction. The upper half of the valve plate 5 a having the tumble notch 33 is a tumble formation region 31, and the lower half having the swirl hole 34 is a swirl formation region 32.

That is, the valve plate 5a has a notch (tumble notch 33) at the upper end, and a through hole (a swirl hole 34) for opening a lateral half is formed in the lower half of the valve plate 5a. Have.
Note that the upper end of the valve plate 5a is an end in the direction of rotation when the valve plate 5a moves upward along the downstream opening end 25 by the rotation of the shaft 4.

  Accordingly, the upper half of the valve plate 5 a having the tumble notch 33 becomes the tumble formation region 31, and the lower half having the swirl hole 34 becomes the swirl formation region 32.

As shown in FIG. 4A, at the valve position where the upper half (tumble formation region 31) of the valve plate 5a closes the downstream opening end 25 (referred to as the first valve position), the tumble notch 33 Since only the upper end of the downstream opening end 25 opens (see FIG. 4B), a vertical rotation flow (tumble flow) is formed in the combustion chamber. That is, the valve 5 is in a tumble state.
In addition, as shown in FIG. 4C, at the valve position where the lower half (swirl formation region 32) of the valve plate 5a closes the downstream opening end 25 (referred to as the second valve position), the swirl hole 34 causes the downstream. Since only the lateral half of the side opening end 25 is opened (FIG. 4D), a laterally rotating flow (swirl flow) is formed in the combustion chamber, that is, the valve 5 is in a swirl state.

  Further, as shown in FIG. 4 (e), at the valve position where the valve plate 5a moves above the downstream opening end 25 (referred to as the third valve position), the downstream opening end 25 is blocked by the valve plate 5a. Since it does not come off, the passage cross-sectional area of the intake passage is maximized (see FIG. 4F). That is, the valve 5 is fully opened.

  By rotating the actuator 6 so as to be any one of the first to third valve positions described above, the valve 5 is brought into one of three states, a tumble state, a swirl state, and a fully open state.

Specifically, the actuator 6 is rotated so as to change the valve position in order to bring the valve 5 into one of three states according to the engine load, the required intake air amount, and the like.
For example, the actuator 6 has a first valve position in a predetermined low load region, a second valve position in a predetermined high load region, and a third valve position when the electronic throttle is fully open. To control.

  A space through which the valve plate 5 a can pass is formed above and below the duct 10 between the housing body 9.

[Effects of Example 1]
In the intake device 1 of this embodiment, the valve 5 is driven by a single actuator 6 to create three states: a tumble state, a swirl state, and a fully open state.
For this reason, compared with the case where a plurality of actuators are used, the size of the intake device 1 can be reduced and the cost can also be reduced.

[Example 2]
The second embodiment will be described with reference to FIGS. 5 and 6 focusing on differences from the first embodiment.
In the intake device 1 of this embodiment, the valve 5 moves in the horizontal direction (left and right) instead of up and down.
That is, the shaft 4 is rotatably held in the housing 3 such that the axial direction extends vertically with respect to each duct communicating with each cylinder.

And the shaft 4 distribute | arranged to each duct is mutually connected by the link mechanism.
That is, the link mechanism includes a long lever 37 that is moved by a lever 36 that is connected to the output shaft 6a of the actuator 6, and a plurality of short levers 38 that are connected at one end to the long lever 37 by pin support. Each shaft 4 is connected to the other end of 38, whereby the rotational driving force from the actuator 6 is transmitted to each shaft 4.

The valve plate 5a has a tumble formation region 31 that forms a tumble flow and a swirl formation region 32 that forms a swirl flow.
That is, the valve plate 5a is a tumble formation region having a notch (notch 33 for tumble) at the upper end in a predetermined section in the horizontal direction. Further, a predetermined section on one side in the lateral direction of the valve plate 5a is a swirl formation region 32 that opens only the lateral half of the downstream opening end 25 and closes the remaining half.

6A, at the valve position where the tumble formation region 31 of the valve plate 5a closes the downstream opening end 25 (referred to as a first valve position), the tumble notch 33 causes the downstream opening end. Since only the upper end of 25 opens, a tumble flow is formed in the combustion chamber. That is, the valve 5 is in a tumble state.
Further, as shown in FIG. 6B, at the valve position where the swirl formation region 32 of the valve plate 5a blocks the downstream opening end 25 (referred to as the second valve position), the right half of the downstream opening end 25 is blocked. Since only the left half of the downstream opening end 25 is opened, a swirl flow is formed in the combustion chamber. That is, the valve 5 is in a swirl state.

  Further, as shown in FIG. 6C, at the valve position where the valve plate 5a has moved to the right of the downstream opening end 25 (referred to as the third valve position), the downstream opening end 25 is blocked by the valve plate 5a. Since it does not come off, the passage cross-sectional area of the intake passage 2 is maximized. That is, the valve 5 is fully opened.

By rotating the actuator 6 so as to be any one of the first to third valve positions described above, the valve 5 is brought into one of three states, a tumble state, a swirl state, and a fully open state.
Thereby, the same effect as Example 1 can be acquired.

Example 3
A third embodiment will be described with reference to FIGS. 7 to 9 with a focus on differences from the first embodiment.
In Examples 3 to 8, the valve 5 includes a swirl control valve (hereinafter referred to as SCV40S) that generates a swirl flow and a tumble control valve (hereinafter referred to as TCV40T) that generates a tumble flow. And the transmission means which transmits the driving force of the actuator 6 to SCV40S and TCV40T is provided.
That is, in Examples 3 to 8, specific means for independently operating two valves (SCV40S, TCV40T) with one actuator 6 will be described. In the third and subsequent embodiments, the housing 3 is illustrated in a simplified manner. However, similarly to the first embodiment, the housing 3 includes a duct 10 that forms an intake passage 2 that is opened and closed by a valve 5. .

  SCV40S and TCV40T are swing-type rotary valves, similar to the above-described valve 5. That is, the SCV 40S includes a valve plate 40Sa extending in the rotation direction and a side plate 40Sb that hangs the valve plate 40Sa from the rotation shaft. The TCV 40T includes a valve plate 40Ta and a side plate 40Tb.

The housing 3 holds an SCV shaft 42S that is a rotation shaft of the SCV 40S and a TCV shaft 42T that is a rotation shaft of the TCV 40T.
In the present embodiment, the SCV shaft 42S and the TCV shaft 42T are arranged side by side in the flow direction. For example, the TCV shaft 42T is provided on the downstream side of the SCV shaft 42S. In order to prevent the TCV 40T and the SCV 40S from interfering with each other, for example, the side plate 40Sb of the SCV 40S is set between the side plates 40Tb of the TCV 40T at the axial position of the SCV shaft 42S.

  Further, the valve plate 40Sa of the SCV 40S has a hole (swirl hole 40Sc) penetrating in the thickness direction on one of the left and right sides, and the valve plate 40Ta of the TCV 40T has a notch (tumble notch 40Tc) at the upper end. Have.

The valve closing position of the SCV 40S indicates a valve position where the valve plate 40Sa closes the intake passage 2 and only the swirl hole 40Sc is opened.
The valve closing position of the TCV 40T indicates a valve position where the valve plate 40Ta closes the intake passage 2 and only the tumble notch 40Tc is opened.

  In this embodiment, the rotation driving force of the actuator 6 is transmitted to the TCV shaft 42T and the SCV shaft 42S so that the TCV 40T and the SCV 40S are driven by different movements by the link mechanism.

  In the present embodiment, the SCV shaft 42S is configured to rotate integrally with the actuator 6. A drive gear 44 that rotates integrally with the actuator 6 is provided at one end of the SCV shaft 42S. An intermediate gear 45 is engaged with the drive gear 44. Three link levers 46A, B, and C are interposed between the intermediate gear 45 and the TCV shaft 42T.

One end of the link lever 46A is fixed to the rotation center axis of the intermediate gear 45, and the other end is connected to one end of the link lever 46B by pin support. One end of the link lever 46C is connected to the link lever 46B by pin support, and the other end is fixed to the rotation center axis of the TCV shaft 42T.
According to this, when the drive gear 44 and the SCV shaft 42S are rotated by the rotation of the actuator 6, the TCV shaft 42T is rotated via the intermediate gear 45 and the link levers 46A, B, and C.

Here, when the amplification ratio of the intermediate gear 45 with respect to the drive gear 44 is β ° / α °, and the intermediate gear 45 is rotated by β / 2 °, the link lever 46A is rotated so that the TCV shaft 42T is rotated by α °. , B and C are set.
The rotation range of the SCV shaft 42S (drive gear 44) and the TCV shaft 42T is 0 ° to α °. When the rotation angle of the SCV shaft 42S is α °, the SCV 40S is in the closed position, and the TCV shaft 42T When the rotation angle is α °, the TCV 40T is in the valve closing position.

[Description of Operation of Example 3]
The operation of the third embodiment will be described with reference to FIGS.
<State 1>
As shown in FIG. 8 and FIG. 9A, the SCV shaft 42S and the intermediate gear 45 when the valve plate 40Sa of the SCV 40S and the valve plate 40Ta of the TCV 40T are positioned on the lower side and do not block the intake passage 2. The rotation angle of the TCV shaft 42T is set to 0 °. At this time, the passage cross-sectional area of the intake passage 2 is maximum. That is, the valve 5 is fully opened.

<State 2>
As shown in FIGS. 8 and 9B, when the actuator 6 rotates and the drive gear 44 and the SCV shaft 42S rotate by α / 2 °, the intermediate gear 45 rotates by β / 2 °. For this reason, the TCV shaft 42T rotates by α °. That is, the TCV shaft 42T rotates twice as much as the SCV shaft 42S. At this time, since the TCV 40T comes to the valve closing position and the valve plate 40Ta blocks the intake passage 2, only the tumble notch 40Tc is opened. That is, the valve 5 is in a tumble state.

<State 3>
As shown in FIGS. 8 and 9C, when the actuator 6 further rotates and the drive gear 44 and the SCV shaft 42S rotate by α °, the intermediate gear 45 rotates by β °. Since the TCV shaft 42T makes one cycle every time the intermediate gear 45 rotates by β / 2 °, when the intermediate gear 45 rotates by β °, the TCV shaft 42T returns to 0 °. At this time, since the SCV 40S comes to the valve closing position and the valve plate 40Sa closes the intake passage 2, only the swirl hole 40Sc is opened. That is, the valve 5 is in a swirl state.

As a result, the SCV 40S and the TCV 40T operate differently even when the displacement is caused by the same actuator 6, so that only one SCV 40S is closed, only the TCV 40T is closed, and both the SCV 40S and the TCV 40T are operated by one actuator 6. It can be moved to the opened state.
Thereby, the same effect as Example 1 can be produced.
In this embodiment, the drive gear 44 may be provided not on the SCV shaft 42S but on the TCV shaft 42T so that the driving force is transmitted to the SCV shaft 42S by a link mechanism.

Example 4
The fourth embodiment will be described with reference to FIGS. 10 and 11 focusing on differences from the third embodiment.
The transmission means of this embodiment includes a drive gear 47 that is rotated by the actuator 6, an SCV gear 48 that can be engaged with the drive gear 47, and that can rotate the SCV shaft 42S, and can be engaged with the drive gear 47, and a TCV shaft 42T. And a TCV gear 49 for rotating the.
Specifically, an SCV gear 48 is provided at one end of the SCV shaft 42S, a TCV gear 49 is provided at one end of the TCV shaft 42T, and the output of the actuator 6 is between the SCV gear 48 and the TCV gear 49. A drive gear 47 fixed to the shaft is provided.

  The drive gear 47, the SCV gear 48, and the TCV gear 49 each have a gear portion 50 in which gear teeth are formed and a missing tooth portion 51 in which gear teeth are missing. That is, the gear teeth exist only in a predetermined section in the rotation direction. The outer diameter of the missing tooth portion 51 is provided so as not to protrude in the radial direction from the trough portion of the gear teeth so that the missing tooth portion 51 does not interfere with the adjacent gear when the gears are disengaged. It is configured.

Further, the gear portion 50 of the TCV gear 49 is formed on the valve plate 40Ta side in the radial direction, and the gear portion 50 of the SCV gear 48 is formed on the counter valve plate 40Sa side in the radial direction (see FIG. 11). ).
When the drive gear 47 is engaged with the SCV gear 48, the TCV gear 49 is not engaged with the drive gear 47. When the drive gear 47 is engaged with the TCV gear 49, the SCV gear 48 is engaged with the drive gear 47. It is comprised so that it may not mesh with.

In this embodiment, the TCV shaft 42T and the TCV 40T are provided on the upstream side of the SCV shaft 42S and the SCV 40S.
The TCV shaft 42T and the SCV shaft 42S are provided with springs 52 and 53 that hold the TCV 40T and the SCV 40S downward, respectively.

[Description of Operation of Example 4]
The operation of the fourth embodiment will be described with reference to FIG.
<State 1>
As shown in FIG. 11A, the TCV 40T and the SCV 40S are held on the lower side by the urging force of the springs 52 and 53, and the intake passage 2 is released.
At this time, the passage cross-sectional area of the intake passage 2 is maximum. That is, the valve 5 is fully opened.
In this state, the drive gear 47 is set so that the gear portion 50 is located upward, and the drive gear 47 is not engaged with the SCV gear 48 or the TCV gear 49. Further, the gear portion 50 of the SCV gear 48 is located above, and the gear portion 50 of the TCV gear 49 is located below.

<State 2>
As shown in FIG. 11B, when the drive gear 47 is rotated clockwise, the drive gear 47 and the SCV gear 48 are engaged with each other. As a result, the SCV gear 48 rotates counterclockwise, the SCV 40S is displaced to the valve closing position against the biasing force of the spring 53, and the intake passage 2 is closed. At this time, since the drive gear 47 and the TCV gear 49 do not mesh with each other, the TCV 40T is not displaced and remains held on the lower side.
Therefore, at this time, since the valve plate 40Sa of the SCV 40S blocks the intake passage 2, only the swirl hole 40Sc is opened. That is, the valve 5 is in a swirl state.

<State 3>
As shown in FIG. 11C, when the driving gear 47 is further rotated clockwise from the state 2, the meshing between the driving gear 47 and the SCV gear 48 is released. Thereby, SCV40S returns to the original position (lower side) by the urging | biasing force of the spring 53. FIG.

<State 4>
As shown in FIG. 11D, when the drive gear 47 is further rotated clockwise from the state 3, the drive gear 47 and the TCV gear 49 are engaged with each other. As a result, the TCV gear 49 rotates counterclockwise, the TCV 40T is displaced to the valve closing position against the biasing force of the spring 52, and the intake passage 2 is closed. At this time, since the drive gear 47 and the SCV gear 48 do not mesh with each other, the SCV 40S is not displaced and remains held on the lower side.
Therefore, at this time, since the valve plate 40Ta of the TCV 40T closes the intake passage 2, only the tumble notch 40Tc is opened. That is, the valve 5 is in a tumble state.

As a result, the SCV 40S and the TCV 40T operate differently even when the displacement is caused by the same actuator 6, so that only one SCV 40S is closed, only the TCV 40T is closed, and both the SCV 40S and the TCV 40T are operated by one actuator 6. It can be moved to the opened state.
Thereby, the same effect as Example 1 can be produced.

Example 5
A fifth embodiment will be described with reference to FIGS. 12 to 14 with a focus on differences from the third embodiment.
In the present embodiment, the TCV shaft 42T and the SCV shaft 42S have a double structure arranged substantially coaxially. That is, the TCV shaft 42T is inserted through the inner periphery of the SCV shaft 42S provided in a cylindrical shape (see FIG. 12). The TCV shaft 42T and the SCV shaft 42S are rotatably held by the housing 3 so as to cross the intake passage 2 above the intake passage 2 (see FIG. 13).

The SCV shaft 42S is provided with a fixing portion 42Sa to which the side plate 40Sb of the SCV 40S is fixed, and a notch 42Sb for exposing the TCV shaft 42T on the inner side in the axial direction of the fixing portion 42Sa.
The TCV shaft 42T has a fixing portion 42Ta to which the side plate 40Tb of the TCV 40T is fixed at the exposed portion exposed from the notch 42Sb.

  The valve plate 40Sa of the SCV 40S is disposed on the radially outer side than the valve plate 40Ta of the TCV 40T, the side plate 40Sb of the SCV 40S is disposed on the radially outer side of the side plate 40Tb of the TCV 40T, and the SCV 40S and the TCV 40T are on the same axis. It is assembled in a double swing shape that rotates around.

  Further, the transmission means of this embodiment includes a drive rotating body 57 that is rotated by the actuator 6, an SCV rotating body 58S that can be engaged with the drive rotating body 57 in the rotation direction and rotates the SCV shaft 42S, Between the drive rotation body 57 and the SCV rotation body 58S, the drive rotation body 57 and the TCV rotation body 58T, which can be engaged with the drive rotation body 57 in the rotation direction and rotate the TCV shaft 42T. And a ratchet mechanism provided between the two.

In other words, the drive rotating body 57 and the SCV rotating body 58S and the drive rotating body 57 and the TCV rotating body 58T can be engaged and disengaged by a ratchet mechanism, and the drive rotating body 57 is connected to the SCV rotating body 58S. When engaged, the TCV rotating body 58T is not engaged with the driving rotating body 57, the driving force is transmitted only to the SCV shaft 42S, and only the SCV 40S can be driven.
Further, when the drive rotating body 57 is engaged with the TCV rotating body 58T, the SCV rotating body 58S is not engaged with the drive rotating body 57, and the driving force is transmitted only to the TCV shaft 42T, and only the TCV 40T is driven. can do.

Below, the specific structure of a ratchet mechanism is demonstrated.
The TCV rotating body 58T is provided at one end of the TCV shaft 42T so as to be integrally rotatable with the TCV shaft 42T.
The SCV rotating body 58S is provided at one end of the SCV shaft 42S so as to be rotatable integrally with the SCV shaft 42S.
The TCV rotating body 58T and the SCV rotating body 58S are arranged in the axial direction in a state where the TCV shaft 42T is inserted into the SCV shaft 42S, and the TCV rotating body 58T is arranged on one end side in the axial direction from the SCV rotating body 58S.

Each of the SCV rotating body 58S and the TCV rotating body 58T has four movable pins 60 on the outer periphery at intervals of 90 ° in the circumferential direction.
The movable pin 60 includes a head 60a that protrudes to the outer peripheral side and a spring 60b that biases the head 60a to the outer peripheral side, and can be displaced to the inner peripheral side (inward in the radial direction) by pressing from the outer peripheral side. It has become. And the recessed part 60c dented to the inner peripheral side is formed in the outer peripheral surface of the head 60a. Tapered surfaces 60d and e are provided at both ends of the head 60a in the rotational direction (see FIG. 13B).
Here, the movable pin of the SCV rotating body 58S is referred to as an SCV movable pin 60S, and the movable pin of the TCV rotating body 58T is referred to as a TCV movable pin 60T.

  The SCV rotating body 58S also has four movable pins (hereinafter referred to as SCV movable pins 60S) at intervals of 90 ° in the circumferential direction. The SCV movable pin 60S has the same configuration as the TCV movable pin 60T.

  Further, the housing 3 is in contact with the TCV movable pin 60T by the rotation of the TCV rotating body 58T, and the TCV fixing pin 62T that displaces the TCV movable pin 60T radially inward, and the SCV by the rotation of the SCV rotating body 58S. An SCV fixing pin 62S that contacts the movable pin 60S and displaces the SCV movable pin 60S radially inward is fixed.

The SCV rotating body 58S and the TCV rotating body 58T are provided outside the housing 3, and the TCV fixing pin 62T and the SCV fixing pin 62S are provided so as to protrude from one end surface of the housing 3 to one end side.
The TCV fixing pin 62T is longer than the SCV fixing pin 62S in order to engage with the TCV rotating body 58T located at one end side of the SCV rotating body 58S.

  The TCV fixing pins 62T are provided at an interval of 90 ° in the circumferential direction, and the SCV fixing pins 62S are provided at an interval of 90 ° in the circumferential direction so as to be positioned at the center of the adjacent TCV fixing pins 62T in the circumferential direction. It has been. That is, the adjacent TCV fixing pin 62T and SCV fixing pin 62S are provided 45 ° apart.

  Since the TCV movable pin 60T is positioned between the TCV fixed pins 62T and the SCV movable pin 60S is positioned between the SCV fixed pins 62S in the circumferential direction, the circumferential direction is viewed from the axial direction. SCV movable pin 60S is located between adjacent TCV movable pins 60T.

The drive rotating body 57 has an annular shape, and is fixed to an actuator plate 6b that rotates integrally with the actuator 6 with a bolt.
The drive rotating body 57 has claws 57A (engagement portions) that can be engaged with the recesses 60c of the TCV movable pin 60T and the SCV movable pin 60S on the inner periphery thereof at 90 ° intervals.
The drive rotating body 57 is arranged on the outer periphery of the TCV rotating body 58T and the SCV rotating body 58S.
When the claw 57A comes into contact with the head 60a from the circumferential direction, the claw 57A pushes the head 60a radially inward and fits into the recess 60c. Further, when the head 60a is displaced radially inward by the fixing pins 62S and T, the engagement between the claw 57A and the recess 60c is released.

[Description of Operation of Example 5]
The operation of the fifth embodiment will be described with reference to FIGS.
<State 2 (default state)>
As shown in FIG. 13B, in the steady state, the TCV 40T and the SCV 40S are held below the intake passage 2.
At this time, the passage cross-sectional area of the intake passage 2 is maximum. That is, the valve 5 is fully opened.

  In this state, the claw 57A is engaged with the SCV movable pin 60S. Then, the fixed pins 62S and T are close to each other in the clockwise direction of the movable pins 60S and T (see the state of the ratchet in FIG. 13B).

<State 1>
As shown in FIG. 13A, when the drive rotating body 57 is rotated counterclockwise by the actuator 6 from the default state (FIG. 13B), the SCV engaged with the driving rotating body 57 by the claw 57A. The rotating body 58S rotates counterclockwise. That is, when the drive rotating body 57 and the SCV rotating body 58S are engaged and the SCV shaft 42S rotates, the SCV 40S comes to the valve closing position, and the valve plate 40Sa closes the intake passage 2.

During the rotation of the drive rotating body 57 from the default state to the state 1, the drive rotating body 57 does not engage with the TCV rotating body 58T, and therefore the TCV 40T is not displaced and maintains the default state.
Therefore, at this time, since the valve plate 40Sa of the SCV 40S blocks the intake passage 2, only the swirl hole 40Sc is opened. That is, the valve 5 is in a swirl state.

<State 3>
As shown in FIG. 13 (c), when the drive rotating body 57 is rotated clockwise by the actuator 6 from the default state (FIG. 13 (b)), the SCV rotating body 58S is rotated clockwise to move the SCV. The SCV fixing pin 62S comes into contact with the pin 60S, and the SCV fixing pin 62S displaces the SCV movable pin 60S radially inward. That is, the collision of the SCV fixing pin 62S from the circumferential direction is converted into a radially inward force by the tapered surface 60d, and the SCV movable pin 60S is displaced radially inward.
Thereby, the engagement between the recess 60c of the SCV movable pin 60S and the claw 57A is released.
At this time, the SCV 40S and TCV 40T are not displaced and remain in the default state (see FIG. 13 (c) valve state).

<State 4>
As shown in FIG. 14A, when the drive rotating body 57 is further rotated clockwise by the actuator 6 from the state 3 (FIG. 13C), the claw 57A contacts the head 60a of the TCV movable pin 60T. It contacts and is guided by the tapered surface 60e and fits into the recess 60c.
Thereby, the drive rotation body 57 and the TCV rotation body 58T are engaged.

<State 5>
As shown in FIG. 14B, when the drive rotating body 57 is rotated counterclockwise by the actuator 6 from the state 4 (FIG. 14A), the TCV rotating body 58T engaged with the drive rotating body 57 is It rotates counterclockwise. As a result, the TCV shaft 42T rotates to bring the TCV 40T into the valve closing position, and the valve plate 40Ta closes the intake passage 2.
During the rotation of the drive rotation body 57 from the state 4 to the state 5, the drive rotation body 57 is not engaged with the SCV rotation body 58S, so the SCV 40S is not displaced and maintains the default state.
Therefore, at this time, since the valve plate 40Ta of the TCV 40T closes the intake passage 2, only the tumble notch 40Tc is opened. That is, the valve 5 is in a tumble state.

<State 6>
As shown in FIG. 14 (c), the drive rotating body 57 is rotated clockwise from the state 5 (FIG. 14 (b)) and returned to the state 4 (FIG. 14 (a)). TCV rotating body 58T rotates clockwise, the TCV fixed pin 62T comes into contact with the TCV movable pin 60T, and the TCV fixed pin 62T displaces the TCV movable pin 60T radially inward. That is, the collision of the TCV fixing pin 62T from the circumferential direction is converted into a radially inward force by the tapered surface 60d, and the TCV movable pin 60T is displaced radially inward.
Thereby, the engagement between the recess 60c of the TCV movable pin 60T and the claw 57A is released.

As a result, the SCV 40S and the TCV 40T operate differently even when the displacement is caused by the same actuator 6, so that only one SCV 40S is closed, only the TCV 40T is closed, and both the SCV 40S and the TCV 40T are operated by one actuator 6. It can be moved to the opened state.
Thereby, the same effect as Example 1 can be produced.

Example 6
A sixth embodiment will be described with reference to FIGS. 15 to 17 with a focus on differences from the fifth embodiment.
The transmission means of the present embodiment includes a drive joint 65 (pressing member) rotated by the actuator 6, a first shaft having a first lever that can contact the drive joint 65 in the rotation direction, A second shaft having a second lever capable of contacting in the moving direction.
In the present embodiment, the first shaft is the TCV shaft 42T, and the second shaft is the SCV shaft 42S.

  The TCV shaft 42T has a TCV joint 66T at one end, and the SCV shaft 42S has an SCV joint 66S at one end. The TCV joint 66T is provided with a first lever, and the SCV joint 66S is provided with a second lever. The TCV shaft 42T and the SCV shaft 42S are provided with springs 68 and 69 for holding the TCV 40T and the SCV 40S in a default state (described later), respectively.

  The TCV joint 66T and the SCV joint 66S are arranged in the axial direction in a state where the TCV shaft 42T is inserted into the SCV shaft 42S, and the TCV joint 66T is arranged on one end side in the axial direction with respect to the SCV joint 66S.

The TCV joint 66T has a cylindrical shape, and partitions Ta and Tb are provided inside the cylinder.
The partitions Ta and Tb protrude in a plate shape inside the cylinder of the TCV joint 66T so as to face each other from the inner peripheral surface to the center in the radial direction. That is, the partition Tb is formed at a position 180 ° clockwise from the partition Ta.

The SCV joint 66S has a cylindrical shape, and partitions Sa and Sb are provided inside the cylinder.
The partitions Sa and Sb protrude in the center of the radial direction inside the cylinder of the SCV joint 66S so as to face each other from the inner peripheral surface. That is, the partition Sb is formed at a position 180 ° clockwise from the partition Sa.

  The partitions Ta and Tb function as a first lever that can be engaged with the drive joint 65 (pressing member) in the radial direction, and the partitions Sa and Sb function as a second lever that can be engaged with the drive joint 65 in the radial direction. To do.

The direction in which the partitions Ta and Tb extend and the direction in which the partitions Sa and Sb extend intersect each other when viewed from the axial direction in the default state (see FIG. 17B).
A drive joint 65 (pressing member) is inserted between the partition Ta and the partition Sb.

  The drive joint 65 is a member that rotates integrally with the actuator 6. The cross section perpendicular to the axial direction is a quarter circular cross section, and is inserted into the TCV joint 66T and the SCV joint 66S. The clockwise end face 65b can come into contact with the partitions Tb and Sb, and the counterclockwise end face 65a can come into contact with the partitions Ta and Sa.

  With the structure as described above, this transmission means is configured such that the position where the drive joint 65 engages with the SCV joint 66S and the position where the drive joint 65 engages with the TCV joint 66T are different in the rotation direction. ing.

[Description of Operation of Example 6]
The operation of the sixth embodiment will be described with reference to FIG.
<State 2 (default state)>
As shown in FIG. 17B, the TCV 40T is held below the intake passage 2 by a spring 68, and the SCV 40S is held above the intake passage 2 by a spring 69.
At this time, the passage cross-sectional area of the intake passage 2 is maximum. That is, the valve 5 is fully opened.

In this state, the drive joint 65 is located between the partition Ta and the partition Sb.
In the TCV joint 66T, the partition Ta and the end surface 65a are in contact with each other, and the partition Tb and the end surface 65b are separated by 90 °. In the SCV joint 66S, the drive joint 65 and the partitions Sa and Sb are not in contact with each other. And the angular interval between the end surface 65b and the partition Sb is smaller than the angular interval between the end surface 65b and the partition Tb.

<State 1>
As shown in FIG. 17A, when the drive joint 65 is rotated clockwise by the actuator 6 from the default state (FIG. 17B), the angular interval between the end face 65b and the partition Sb is changed to the end face 65b. In the predetermined angle region until the end surface 65b of the drive joint 65 contacts the partition Tb, the end surface 65b pushes only the partition Sb and only the SCV shaft 42S rotates clockwise. Rotate. That is, when the drive joint 65 and the SCV joint 66S are engaged and the SCV shaft 42S rotates, the SCV 40S comes to the valve closing position, and the valve plate 40Sa of the SCV 40S closes the intake passage 2.

During the rotation of the drive joint 65 from the default state to the state 1, since the drive joint 65 does not engage with the TCV joint 66T, the TCV 40T is not displaced and maintains the default state.
Therefore, at this time, since the valve plate 40Sa of the SCV 40S blocks the intake passage 2, only the swirl hole 40Sc is opened. That is, the valve 5 is in a swirl state.

<State 3>
As shown in FIG. 17C, when the drive joint 65 is rotated counterclockwise by the actuator 6 from the default state (FIG. 17B), the end surface 65a of the drive joint 65 presses the partition Ta, Only the TCV shaft 42T rotates counterclockwise. That is, the drive joint 65 and the TCV joint 66T are engaged and the TCV shaft 42T is rotated, so that the TCV 40T comes to the valve closing position and the valve plate 40Ta closes the intake passage 2.

During the rotation of the drive joint 65 from the default state to the state 3, since the drive joint 65 does not engage with the SCV joint 66S, the SCV 40S is not displaced and maintains the default state.
Therefore, at this time, since the valve plate 40Ta of the TCV 40T closes the intake passage 2, only the tumble notch 40Tc is opened. That is, the valve 5 is in a tumble state.

As a result, the SCV 40S and the TCV 40T operate differently even when the displacement is caused by the same actuator 6, so that only one SCV 40S is closed, only the TCV 40T is closed, and both the SCV 40S and the TCV 40T are operated by one actuator 6. It can be moved to the opened state.
Thereby, the same effect as Example 1 can be produced.

  In the present embodiment, the modes of the first lever, the second lever, and the pressing member are not limited to those of the present embodiment, and various modes can be taken. For example, a lever-like thing protruding on the outer periphery of the shafts 42T and S may be used.

Example 7
Example 7 is demonstrated using FIGS. 18-20 centering on a different point from Example 6. FIG.
As in the sixth embodiment, the transmission means of the present embodiment includes a drive joint 65 (pressing member) that is rotated by the actuator 6 and a first shaft that has a first lever that can contact the drive joint 65 in the rotation direction. And a drive shaft 65 and a second shaft having a second lever that can abut in the rotational direction.
In this embodiment, the first shaft is the TCV shaft 42T, and the second shaft is the intermediate shaft 42M. The driving force transmitted to the intermediate shaft 42M is transmitted to the SCV shaft 42S via the intermediate gear 71 that rotates integrally with the intermediate shaft 42M and the SCV gear 72 that meshes with the intermediate gear 71.

The SCV shaft 42S and the TCV shaft 42T are arranged side by side in the flow direction. For example, in this embodiment, the SCV shaft 42S is provided on the downstream side of the TCV shaft 42T.
The SCV 40S is fixed to the SCV shaft 42S, and the TCV 40T is fixed to the TCV shaft 42T.

The TCV shaft 42T is provided in a cylindrical shape, and an intermediate shaft 42M is inserted inside the cylinder.
The TCV shaft 42T has a TCV joint 66T at one end, and the intermediate shaft 42M has an intermediate joint 66M at one end. The TCV joint 66T is provided with a first lever, and the intermediate joint 66M is provided with a second lever.

  The TCV shaft 42T and the intermediate shaft 42M are provided with springs 68 and 69 for holding the TCV 40T and the SCV 40S in a default state (described later), respectively.

  The TCV joint 66T and the intermediate joint 66M are arranged in the axial direction in a state where the intermediate shaft 42M is inserted into the TCV shaft 42T, and the intermediate joint 66M is arranged on one end side in the axial direction with respect to the TCV joint 66T.

  The TCV joint 66T has partitions Ta and Tb as the first lever as in the sixth embodiment.

In the present embodiment, the second lever is provided in an intermediate joint 66M provided in the intermediate shaft 42M that is the second shaft.
That is, the intermediate joint 66M has a cylindrical shape, and partitions Ma and Mb are provided inside the cylinder.
The partitions Ma and Mb protrude in a plate shape inside the cylinder of the intermediate joint 66M so as to face each other from the inner peripheral surface to the center in the radial direction. That is, the partition Mb is formed at a position 180 ° clockwise from the partition Ma. The partitions Ma and Mb function as the second lever.

The direction in which the partitions Ta and Tb extend and the direction in which the partitions Ma and Mb extend intersect with each other when viewed from the axial direction in the default state (see FIG. 20B).
A drive joint 65 (pressing member) is inserted between the partition Ta and the partition Mb.

  The drive joint 65 is a member that rotates integrally with the actuator 6, has a ¼ circular cross section, and is inserted into the TCV joint 66 </ b> T and the intermediate joint 66 </ b> M. The clockwise end face 65b can come into contact with the partitions Tb and Mb, and the counterclockwise end face 65a can come into contact with the partitions Ta and Ma.

  With the structure as described above, the transmission means is configured such that the position where the drive joint 65 engages with the intermediate joint 66M and the position where the drive joint 65 engages with the TCV joint 66T are different in the rotation direction. ing.

The TCV shaft 42T is provided with a notch for exposing the intermediate shaft 42M, and an intermediate gear 71 is formed on the outer periphery of the intermediate shaft 42M exposed from the notch.
The SCV shaft 42S is provided with an SCV gear 72 at a position where it can mesh with the intermediate gear 71.
Thereby, the rotation of the intermediate shaft 42M is transmitted to the SCV shaft 42S via the intermediate gear 71 and the SCV gear 72.

[Description of Operation of Example 7]
The operation of the seventh embodiment will be described with reference to FIG.
<State 2 (default state)>
As shown in FIG. 20B, the TCV 40T is held below the intake passage 2 by a spring 68, and the SCV 40S is held below the intake passage 2 by a spring 69.
At this time, the passage cross-sectional area of the intake passage 2 is maximum. That is, the valve 5 is fully opened.

In this state, the drive joint 65 is located between the partition Ta and the partition Mb.
In the TCV joint 66T, the partition Ta and the end surface 65a are in contact with each other, and the partition Tb and the end surface 65b are separated by 90 °. In the intermediate joint 66M, the drive joint 65 and the partitions Ma and Mb are not in contact with each other. And the angular interval between the end surface 65b and the partition Mb is smaller than the angular interval between the end surface 65b and the partition Tb.

<State 1>
As shown in FIG. 20A, when the drive joint 65 is rotated clockwise by the actuator 6 from the default state (FIG. 20B), the angular interval between the end face 65b and the partition Mb is changed to the end face 65b. Therefore, in the predetermined angle region until the end surface 65b of the drive joint 65 contacts the partition Tb, the end surface 65b pushes only the partition Mb, and only the intermediate shaft 42M rotates clockwise. Rotate. That is, the drive joint 65 and the intermediate joint 66M are engaged, and the intermediate shaft 42M rotates.

As a result, the intermediate gear 71 rotates clockwise, and the SCV gear 72 that meshes with the intermediate gear 71 rotates counterclockwise. As a result, the SCV shaft 42S is displaced, the SCV 40S reaches the valve closing position, and the valve plate 40Sa closes the intake passage 2.
During the rotation of the drive joint 65 from the default state to the state 1, since the drive joint 65 does not engage with the TCV joint 66T, the TCV 40T is not displaced and maintains the default state.
Therefore, at this time, since the valve plate 40Sa of the SCV 40S blocks the intake passage 2, only the swirl hole 40Sc is opened. That is, the valve 5 is in a swirl state.

<State 3>
As shown in FIG. 20C, when the drive joint 65 is rotated counterclockwise by the actuator 6 from the default state (FIG. 20B), the end face 65a of the drive joint 65 presses the partition Ta, Only the TCV shaft 42T rotates counterclockwise. That is, the drive joint 65 and the TCV joint 66T are engaged and the TCV shaft 42T is rotated, so that the TCV 40T comes to the valve closing position and the valve plate 40Ta closes the intake passage 2.

During the rotation of the drive joint 65 from the default state to the state 3, since the drive joint 65 does not engage with the intermediate joint 66M, the SCV 40S is not displaced and maintains the default state.
Therefore, at this time, since the valve plate 40Ta of the TCV 40T closes the intake passage 2, only the tumble notch 40Tc is opened. That is, the valve 5 is in a tumble state.

As a result, the SCV 40S and the TCV 40T operate differently even when the displacement is caused by the same actuator 6, so that only one SCV 40S is closed, only the TCV 40T is closed, and both the SCV 40S and the TCV 40T are operated by one actuator 6. It can be moved to the opened state.
In the present embodiment, the intermediate shaft 42M and the SCV shaft 42S are connected by the intermediate gear 71 and the SCV gear 72. However, the present invention is not limited to this, and a link mechanism or the like may be used.
Alternatively, the SCV shaft 42S may be the first shaft, and the TCV shaft 42T may be driven via the intermediate shaft 42M.

Example 8
The eighth embodiment will be described with reference to FIGS. 21 and 22 focusing on differences from the third embodiment.
The SCV 40S and TCV 40T in this embodiment are not cannula type rotary valves but are cantilever valves.

  The TCV shaft 42T and the SCV shaft 42S have a double structure arranged substantially coaxially. That is, the SCV shaft 42S is inserted through the inner periphery of the cylindrical TCV shaft 42T. The TCV shaft 42T and the SCV shaft 42S are rotatably held by the housing 3 so as to cross the intake passage 2 below the intake passage 2 (see FIG. 22).

The TCV 40T and the SCV 40S have plate-like valve portions (TCV valve portion 76T and SCV valve portion 76S), one end of which is held by the TCV shaft 42T and the SCV shaft 42S, respectively. That is, the valve portions 76T and S are provided to extend in one radial direction from the shafts 42T and S.
The TCV shaft 42T has a notch 75 for exposing the SCV shaft 42S, and is fixed to the SCV shaft 42S so that the valve portion (SCV valve portion 76S) of the SCV 40S protrudes radially outward from the notch 75. Has been.

  The SCV 40S and the TCV 40T are provided so as to overlap with each other in the rotational direction. In a fully opened state described later, the valve portion (TCV valve portion 76T) of the TCV 40T overlaps the SCV valve portion 76S.

  The TCV 40T is fixed to the TCV shaft 42T on the other end side from the center in the width direction of the TCV 40T. When the portion where the TCV 40T of the TCV shaft 42T is fixed is a fixing portion, the notch 75 is more than the fixing portion. It opens below the TCV valve portion 76T on one end side in the axial direction.

A cutout (tumble cutout 76Ta) is provided at the other end of the TCV valve portion 76T.
The SCV valve portion 76S has a width shorter than that of the TCV valve portion 76T and overlaps the region on the one end side from the center in the width direction of the TCV valve portion 76T in the width direction. That is, the TCV valve portion 76T is configured such that only the tumble notch 76Ta is opened when the intake passage 2 is closed, and the SCV valve portion 76S is configured such that only the half in the width direction can be opened when the intake passage 2 is closed. It has become.

  The transmission means of the present embodiment includes an A joint 78 provided on the TCV shaft 42T and rotated by the actuator 6, and a B joint 79 provided on the SCV shaft 42S and engageable with the A joint 78 in the radial direction. .

  The A joint 78 is provided at one end in the axial direction of the TCV shaft 42T and has a cylindrical shape. The A joint 78 is provided at the other end in the axial direction of the partitions Aa and Ab and the partitions Aa and Ab that can be engaged with the B joint 79. And a drive fitting portion 78a to which a drive joint 80 fixed to the output shaft of the actuator 6 is fixed.

  The partitions Aa and Ab project in a plate shape inside the cylinder of the A joint 78 so as to face each other from the inner peripheral surface to the center in the radial direction. The partitions Aa and Ab are provided in the TCV shaft 42T so as to extend in a direction perpendicular to the standing direction of the TCV 40T, and the direction in which the two partitions Aa and Ab face each other is also a direction perpendicular to the standing direction of the TCV 40T. A space in which the drive joint 80 can be inserted is formed between the two partitions Aa and Ab in the radial direction.

The B joint 79 is provided at one end of the SCV shaft 42S in the axial direction and has a quarter cylindrical wall shape. That is, it has an arc cross section with a central angle of 90 °.
The circumferential end surfaces of the B joint 79 are locking surfaces Ba and Bb that can be locked to the partitions Aa and Ab of the A joint 78, respectively. The locking surface Ba is provided at a position where the SCV 40S is erected in the radial direction of the SCV shaft 42S, and the locking surface Bb is provided at a position rotated 90 ° clockwise from the locking surface Ba. ing.

The B joint 79 is inserted into the cylinder of the A joint 78 and is disposed above the partition Aa (TCV standing side). The drive joint 80 passes through the radially inner side of the B joint 79 inserted into the A joint 78 and is fixed to the drive fitting portion 78a.
Thereby, the A joint 78 and the TCV shaft 42T are always transmitted with the driving force from the actuator 6 via the driving joint 80, and rotate integrally with the actuator 6.

[Description of Operation of Example 8]
The operation of the eighth embodiment will be described with reference to FIG. In FIG. 22, the lower part of the partitions Aa and Ab of the A joint 78 is omitted.

<State 1 (default state)>
As shown in FIG. 22A, the state where the extending direction of the TCV valve portion 76T and the SCV valve portion 76S is parallel to the flow direction of the intake passage 2 is a steady state.
At this time, the partition Ab is brought into contact with the locking surface Bb in the clockwise direction, and an interval of 90 ° is provided between the locking surface Ba and the partition Aa.
At this time, the passage sectional area of the intake passage 2 is the maximum (see FIG. 22D). That is, the valve 5 is fully opened.

<State 2>
As shown in FIG. 22B, the drive joint 80 is rotated by the actuator 6 from the default state (FIG. 22A), and the A joint 78 is rotated 90 degrees clockwise. As a result, the TCV shaft 42T rotates 90 °, and the TCV 40T comes to the valve closing position (that is, the extending direction of the TCV valve portion 76T is perpendicular to the flow direction).

During this rotation, the partitions Aa and Ab do not engage with the locking surfaces Ba and Bb. That is, since the A joint 78 and the B joint 79 are not engaged in the radial direction, no driving force is transmitted to the SCV shaft 42S, and the SCV 40S is not displaced.
Therefore, at this time, since the TCV 40T closes the intake passage 2, only the tumble notch 76Ta is opened (see FIG. 22E). That is, the valve 5 is in a tumble state.
In this state, the partition Aa abuts on the counterclockwise direction side of the locking surface Ba, and an interval of 90 ° is provided between the locking surface Bb and the partition Ab.

<State 3>
As shown in FIG. 22 (c), the drive joint 80 is rotated by the actuator 6, and the A joint 78 is further rotated 90 ° from the state 2 in the clockwise direction.
At this time, by the rotation of the A joint 78, the partition Aa that has been in contact with the locking surface Ba from the counterclockwise direction presses the locking surface Ba. That is, due to the radial engagement between the A joint 78 and the B joint 79, the driving force is transmitted to the SCV shaft 42S, the SCV shaft 42S rotates 90 °, and the SCV 40S comes to the valve closing position (that is, the SCV The extending direction of the valve portion 76S is perpendicular to the flow direction).
Therefore, at this time, since the SCV 40S blocks the intake passage 2, only the half in the width direction of the intake passage 2 is opened (see FIG. 22 (f)). That is, the valve 5 is in a swirl state.

As a result, the SCV 40S and the TCV 40T operate differently even when the displacement is caused by the same actuator 6, so that only one SCV 40S is closed, only the TCV 40T is closed, and both the SCV 40S and the TCV 40T are operated by one actuator 6. It can be moved to the opened state.
Thereby, the same effect as Example 1 can be produced.
In this embodiment, the A joint 78 may be provided on the SCV shaft 42S, and the B joint 79 may be provided on the TCV shaft 42T.

1 Intake device 2 Intake passage (air passage)
3 Housing 4 Shaft (Rotating shaft)
5 Valve (fluid control valve)
5a Valve plate (valve part)
6 Actuator 25 Downstream side open end (intake port)
31 Tumble formation area 32 Swirl formation area 33 Tumble notch (tumble passage)
34 Swirl hole (swirl passage)
40S SCV
40Sc Swirl hole (Swirl passage)
40T TCV
Notch for 40Tc tumble (tumble passage)
42M Intermediate shaft (second shaft)
42S SCV shaft (SCV rotation shaft, second shaft)
42T TCV shaft (TCV rotation shaft, first shaft)
44 Drive gear (link mechanism)
45 Intermediate gear (link mechanism)
46A-C Link lever (link mechanism)
47 drive gear 48 SCV gear 49 TCV gear 51 toothless part 57 drive rotary body 58S SCV rotary body 58T TCV rotary body 60S SCV movable pin 60T TCV movable pin 62S SCV fixed pin 62T TCV fixed pin 65 drive joint (pressing member)
78 A joint 79 B joint Ta, Tb Partition (first lever)
Sa, Sb partition (second lever)
Ma, Mb Partition (second lever)

Claims (14)

A housing in which an air flow path communicating with the intake port of the internal combustion engine is formed;
A fluid control valve that is rotatably supported and varies the cross-sectional area of the air flow path of the housing;
One actuator for driving the fluid control valve,
The actuator drives the fluid control valve into three states: a tumble state that forms a tumble flow, a swirl state that forms a swirl flow, and a fully open state that maximizes the cross-sectional area of the flow path. Engine intake system. The intake device for an internal combustion engine according to claim 1,
The fluid control valve includes a swirl control valve (hereinafter referred to as SCV) that generates a swirl flow, and a tumble control valve (hereinafter referred to as TCV) that generates a tumble flow.
The SCV and the TCV are provided side by side in the flow direction of the air flow path,
Transmission means for transmitting the driving force of the actuator to the SCV and the TCV;
An intake device for an internal combustion engine, wherein the transmission means is configured to drive the SCV and the TCV by different movements by engaging / disengaging a link mechanism or driving force transmission. The intake device for an internal combustion engine according to claim 2,
Each of the SCV and the TCV is a rotary valve having a valve portion extending in a rotating direction at a position radially away from a rotating shaft that is rotatably supported.
The valve portion of the TCV has a tumble passage that opens at the upper end in the valve closing position,
The valve portion of the SCV has a swirl passage that opens either the left or right in the valve closing position,
An intake air of an internal combustion engine, wherein each of the valve portions is reciprocally moved in a substantially vertical direction with respect to an intake port of the housing by rotation of the rotation shaft. apparatus. The intake device for an internal combustion engine according to claim 2 or 3,
The transmission means includes
A drive gear rotated by the actuator;
An SCV gear that is meshable with the drive gear and rotates the SCV rotation shaft;
A TCV gear capable of meshing with the drive gear and rotating a rotation shaft of the TCV;
The drive gear, the SCV gear, and the TCV gear each have a missing tooth portion with missing gear teeth,
When the drive gear meshes with the SCV gear, the TCV gear does not mesh with the drive gear, and the driving force is transmitted only to the SCV gear,
An intake device for an internal combustion engine, wherein when the drive gear meshes with the TCV gear, the SCV gear does not mesh with the drive gear, and the drive force is transmitted only to the TCV gear. The intake device for an internal combustion engine according to claim 2 or 3,
The transmission means is a link mechanism provided between the SCV rotation shaft and the TCV rotation shaft,
The intake mechanism for an internal combustion engine, wherein the link mechanism has a structure in which a rotation state of the SCV and a rotation state of the TCV with respect to rotation of the actuator are different. The intake device for an internal combustion engine according to claim 2 or 3,
The transmission means includes
A rotating body rotated by the actuator (hereinafter referred to as a driving rotating body);
A rotating body (hereinafter referred to as an SCV rotating body) that can be engaged with the driving rotating body in a rotating direction and rotates the rotating shaft of the SCV;
A rotating body (hereinafter referred to as a TCV rotating body) that can be engaged with the driving rotating body in a rotating direction and that rotates the rotating shaft of the TCV;
A ratchet mechanism provided between the drive rotating body and the SCV rotating body and between the drive rotating body and the TCV rotating body;
The ratchet mechanism can be engaged / disengaged between the drive rotating body and the SCV rotating body, and between the drive rotating body and the TCV rotating body,
When the drive rotating body is engaged with the SCV rotating body, the TCV rotating body is not engaged with the drive rotating body, and driving force is transmitted only to the SCV rotating shaft,
When the drive rotating body is engaged with the TCV rotating body, the SCV rotating body is not engaged with the drive rotating body, and the driving force is transmitted only to the rotating shaft of the TCV. An intake device for an internal combustion engine. The intake device for an internal combustion engine according to claim 6,
The drive rotating body, the SCV rotating body, and the TCV rotating body are arranged coaxially,
The drive rotating body is provided on the outer periphery of the SCV rotating body and the TCV rotating body,
The ratchet mechanism is
A movable pin that is provided on the outer periphery of each of the SCV rotating body and the TCV rotating body and is radially displaceable;
An engaging portion that is provided on an inner periphery of the drive rotating body and is engageable with the movable pin;
The SCV rotating body and the TCV rotating body are fixed to the housing, and contact with the movable pin by the rotation of the SCV rotating body and the fixed pin that displaces the movable pin radially inward. An intake device for an internal combustion engine. The intake device for an internal combustion engine according to claim 2 or 3,
The transmission means includes
A pressing member rotated by the actuator;
A first shaft having a first lever engageable with the pressing member in a rotation direction;
A second shaft having a second lever engageable with the pressing member in the rotation direction;
In the rotation direction of the pressing member, a position where the pressing member engages with the first lever is different from a position where the pressing member engages with the second lever.
When the pressing member is engaged and rotated with the first lever, a driving force is transmitted to the first shaft,
When the pressing member is engaged and rotated with the second lever, a driving force is transmitted to the second shaft,
The SCV rotates with the rotation of either the first shaft or the second shaft,
The intake device for an internal combustion engine, wherein the TCV is rotated in accordance with the rotation of either the first shaft or the second shaft. The intake device for an internal combustion engine according to claim 8,
The first shaft is a rotating shaft of either the SCV or the TCV,
The intake device for an internal combustion engine, wherein the second shaft is the other rotation shaft of the SCV or the TCV. The intake device for an internal combustion engine according to claim 8,
The first shaft is a rotating shaft of either the SCV or the TCV,
The intake device for an internal combustion engine, wherein the second shaft transmits a driving force to the other rotation shaft of the SCV or the TCV via a gear or a link mechanism. The intake device for an internal combustion engine according to claim 2 or 3,
The SCV and the TCV are each cantilever valves,
The SCV rotation shaft and the TCV rotation shaft have a double structure arranged substantially coaxially,
The transmission means is provided on either the SCV rotation shaft or the TCV rotation shaft, and is rotated by the actuator (hereinafter referred to as A joint);
A joint (hereinafter referred to as a B joint) that is provided on either the SCV rotation shaft or the TCV rotation shaft and that can be engaged with the A joint in the rotation direction;
The A joint transmits a driving force to the other of the rotation shaft of the SCV or the rotation shaft of the TCV by engagement with the B joint,
An internal combustion engine in which a driving force is transmitted only to either the SCV rotation shaft or the TCV rotation shaft in an angular region where the A joint and the B joint are not engaged. Inhalation device. The intake device for an internal combustion engine according to claim 1,
The fluid control valve has a valve portion extending in a rotation direction at a position radially away from a rotation shaft that is rotatably supported, and the valve portion is rotated by the rotation shaft. A rotary valve that varies the cross-sectional area of the flow path by reciprocating vertically or horizontally with respect to the inlet of the housing,
The valve portion has a tumble formation region that forms a tumble flow, and a swirl formation region that forms a swirl flow,
In the valve position where the valve portion closes the intake port in the tumble formation region, the tumble state is established.
In the valve position where the valve portion closes the intake port in the swirl formation region, the swirl state is established,
In the valve position where the valve portion does not close the intake port, the valve portion is fully opened,
The intake device for an internal combustion engine, wherein the actuator switches the three states by rotating the fluid control valve to change the valve position. The intake device for an internal combustion engine according to claim 12,
The fluid control valve is a rotary valve that varies the cross-sectional area of the flow path when the valve portion reciprocates in a substantially vertical direction with respect to the intake port by rotation of the rotation shaft.
The valve portion has a tumble passage that opens at the upper end at the first valve position, and a swirl passage that opens at the left or right at the second valve position,
An intake device for an internal combustion engine, wherein the intake valve is in a tumble state at the first valve position and is in a swirl state at the second valve position. The intake device for an internal combustion engine according to claim 12,
The fluid control valve is a rotary valve that varies the cross-sectional area of the flow path when the valve portion reciprocally moves in the left-right direction with respect to the intake port by rotation of the rotation shaft.
The valve portion has a tumble passage that opens at the upper end at the first valve position, and a closing portion that closes a predetermined region of either the left or right of the downstream opening at the second valve position,
In the first valve position, only the tumble passage is opened to be in a tumble state, and in the second valve position, only a predetermined region on either the left or right side of the downstream side opening is in a swirl state. An intake device for an internal combustion engine.

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