JP2003343398A - Intake control device in internal combustion engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive intake control device in which flexibility for mounting to a vehicle is high and exact feed of idling air to respective throttle body is possible. <P>SOLUTION: In an air distributor A, a control valve element 45 is movably and slidably arranged in a slide valve chamber 42 and an auxiliary air introduction passage 44 and control holes 43A, 43B, etc., are opened to an air chamber 47 formed by a lower surface 45C of the control valve element 45 and a bottom part 42B of the slide valve chamber 42. The control valve element 45 is controlled by a thermo-sensitive body H and the opening of the control hole 43A to the air chamber 47 is variably controlled corresponding to the temperature. Synchronous air passages 52 provided with an adjustment screw 53 communicating intake passages at upstream and downstream side of a throttle valve and variably controlling a passage area are provided on the respective throttle bodies. The respective control holes 43A, etc., are communicated with the intake passage 51A at a downstream side than the throttle valves of the respective throttle bodies through distribution passages 54A, etc. The idling amount of air of the engine is formed by first air fed through the control holes 43A and the distribution passage 54A and second air fed from the synchronous air passage 52. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply to an internal combustion engine.
Of the intake control devices that regulate and control air volume,
In addition, a throttle body with an intake passage
A multiple throttle body in which a plurality of data are arranged, and
Opening of the throttle valve and fast idling
The present invention relates to the adjustment and control of the opening degree of the air and the air amount in the region. [0002] A conventional intake control device for an internal combustion engine is
As shown in FIG. 1 is bored with an intake passage 2 penetrating the inside
And the intake passage 2 is shown in the figure.
The upstream intake passage and the downstream intake passage by a throttle valve
2A. The upstream intake passage is not shown.
Connected to the air cleaner, the downstream intake passage 2A is shown
It is connected to the institution that is not. 3 is from a throttle valve not shown
The intake passage on the upstream side and the intake passage 2A on the downstream side of the throttle valve
To the throttle body 1 that communicates around the throttle valve
The auxiliary air passage is formed, and the auxiliary air passage 3
A sliding valve chamber 4 that opens to the side is formed. The auxiliary air vent
The passage is formed by the sliding valve chamber 4 and the intake passage downstream of the throttle valve.
An auxiliary air passage 3A on the upstream side which is communicated with 2A, and a throttle valve
Auxiliary air flow to the upstream connected to the intake passage on the more upstream side
Road 3B is divided. More specifically, the downstream auxiliary air
The upstream side of the air passage 3A opens to the bottom 4A of the sliding valve chamber, and
Downstream of the throttle valve opens into the intake passage 2A downstream of the throttle valve.
You. The upstream side of the upstream auxiliary air passage 3B is a throttle valve.
To the intake passage on the upstream side, and the downstream side
4 is connected to a control hole 5 drilled in the side 4B of the
An opening 5 is formed in the sliding valve chamber 4 through the opening 5. Upstream and downstream are empty
In the direction of qi flow. Thus, upstream of the throttle valve
The air in the intake passage of the upstream side is the auxiliary air passage 3 on the upstream side.
B, control hole 5, sliding valve chamber 4, downstream auxiliary air passage 3
A, and flows into the intake passage 2A downstream of the throttle valve.
Enter. The air flowing through the auxiliary air passage 3 bypasses the throttle valve.
Turn and flow. 6 is slidably disposed in the sliding valve chamber 4.
Cylindrical control valve element, and the control valve element 6
The operating rod 6A is integrally formed and extends
A male screw 6B is formed at the end. And the control valve element 6
Is operated by operating the operating rod 6A in the vertical direction in the figure.
Thus, the opening of the control hole 5 into the sliding valve chamber 4 is controlled. You
That is, control is performed by moving the control valve body 6 downward.
The opening of the hole 5 is reduced and by moving upward
The opening of the control hole 5 increases. Slot with the above configuration
In this example, three pieces of the body 1 are arranged. [0003] H includes an operating rod 10A according to a temperature change.
It is a thermo-sensitive body that converts the stroke of the operating body 10.
Consists of below. 8 contains paraffin, olefin, etc.
The heat-expandable material is sealed, and the heat-expandable material expands and contracts.
Is output as a stroke conversion of the output rod 8A.
Thermo-wax member, and the thermo-wax portion
The material 8 is housed and arranged in a case 9. 10 is case 9
A cup-shaped operating body movably disposed in the
Actuator 10 is pressed upward by spring 11
According to this, the cup bottom portion 10B of the operating body 10 comes out.
The lower end of the force rod 8A is elastically pressed and held in contact.
Further, the cup bottom 10B is formed integrally with the operating body 10.
The operating rod 10A extends further downward, and the operating rod 1
0A is arranged to protrude downward from the bottom of case 9.
The male screw 10C is formed at the lower end. This heat
Responsive body H is fixed to fixed part K of throttle body 1 etc. with screws etc.
Therefore, they are fixedly arranged. [0004] Reference numeral 12 in FIG.
-1A is a first operation lever arranged facing the
The first operation lever 12 is rotatably supported by a first shaft 13.
Attached to. Then, at the left end of the first operation lever 12
The operation rod insertion hole 12A is formed and the operation rod
The upper end of the operating rod 6A is slidably disposed in the insertion hole 12A.
Further, the left end of the first operation lever 12 is
A nut N screwed onto the upper end of the male screw 6B of A and a spring
Clip 14. Also, the first shaft 13 and the operating rod
An intermediate portion of the first operation lever 12 between the inlet 12A and the
A moving rod insertion hole 12B is formed, and
The operating rod 10A of the thermosensitive element H is inserted and arranged in the hole 12B.
Is done. Then, the operating rod insertion hole 1 of the first operation lever 12
Male screw 1 at the lower end of operating rod 10A projecting below 2B
A nut N is screwed into the first operating lever 12.
The space between the nut N and the spring 1 disposed opposite to the nut N
5 pinched. Furthermore, to the right of the first shaft 13
Fixed facing the upper surface of the right end of the first operation lever 12 located
The adjusting screw 16 screwed to the part K is disposed to face
You. According to the adjusting screw 16, the first operation lever 1
2 is regulated in a counterclockwise direction. [0005] Reference numeral 20 denotes an intermediate throttle body in FIG.
-1B is a second operating lever arranged facing the
The right end of the second operation lever 20 is a rotatably supported second
It is attached to the two shafts 21. Then, the second operation lever 20
At the left end, an operation rod insertion hole 20A is formed and
The upper end of the operating rod 6A is slidable in the operating rod insertion hole 20A.
The left end of the second operation lever 20 is
A nut N screwed to the upper end of the male screw 6B of the operating rod 6A;
It is held by the spring 22. Reference numeral 30 denotes a left throttle button in FIG.
This is a third operating lever arranged facing the day 1C.
The right end of the third operation lever 30 is rotatably supported.
It is attached to the third shaft 31. Then, the third operation lever 30
An operation rod insertion hole 30A is formed at the left end of
The upper end of the operating rod 6A slides into the operating rod insertion hole 30A.
And the left end of the third operation lever 30
Is a nut screwed onto the upper end of the male screw 6B of the operating rod 6A.
N and the spring 32 pinch. And the first
Operation lever 12, second operation lever 20, and third operation lever
30 is connected by a link L to rotate synchronously.
It is. According to such a conventional intake control device,
Works. First, the right throttle body 1A
Will be described. When the ambient temperature of the engine is low,
The thermal expansion and contraction material in the thermo wax member 8 of the thermosensitive element H is
According to this, the volume of the output rod 8A is reduced.
The protrusion dimension D is kept small. On the other hand, the operating body 10
Because it is urged upward by the pulling 11,
The cup bottom 10B of the moving body 10 abuts on the lower end of the output rod 8A.
Move to the upper position so that the position of the operating body 10 is determined.
It is. The upward movement of the operating body 10 is at the end of the operating rod 10A.
To the first operating lever 12 via a nut N arranged at
Has been reached, the first operating lever 12 operates around the first shaft 13
The body 10 rotates clockwise in response to the upward movement. still,
When the first operation lever 12 is rotated clockwise, the adjustment is performed.
The alignment screw 16 does not hinder its rotation. Then, the clockwise movement of the first operation lever 12
The operation rod 6A of the control valve element 6 is
And the spring 14
The control valve element 6
The control hole 5 is largely opened. According to the above, the upstream supplement
Auxiliary air according to large opening of control hole 5 from auxiliary air passage 3B
Is downstream through the sliding valve chamber 4 and the downstream auxiliary air passage 3A.
Is supplied into the side intake passage 2A, thereby starting the engine at a low temperature.
An increased amount of air suitable for the engine can be supplied to the engine. Next, the engine atmosphere is compared with the temperature state.
When the air temperature rises, thermal expansion and contraction in the thermo wax member 8 occurs.
The material expands, thereby increasing the protrusion D of the output rod 8A.
I do. According to this, the operating body 10 is
In the downward direction as the protrusion of the output rod 8A increases against the force
It is displaced, and the spring 15 of the operating rod 10A is
The first operating lever 12 clamped by the
It rotates in the counterclockwise direction according to the increase in the protrusion of A. Soshi
The rotation of the first operation lever 12 in the counterclockwise direction
Transmission to the operating rod 6A of the control valve body 6 via the spring 14
To move the control valve element 6 downward.
The body 6 has its opening reduced from the large opening state of the control hole 5.
Let According to the above description, the sliding valve chamber 4 and the downstream auxiliary air
The air supplied into the downstream intake passage 2A via the passage 3A
The air volume can be reduced from the above state, so that after a cold start
To the engine appropriate for warm-up operation of the engine in Japan
Can supply. Next, the engine atmosphere is compared with the temperature state.
When the engine temperature has risen and the warm-up operation of the engine has ended,
The heat-expandable material in the mowax member 8 further expands,
As a result, the protrusion D of the output rod 8A further increases. This
Then, the operating rod 10A of the operating body 10 moves further downward.
Then, the first operation lever 12 also moves further counterclockwise.
You. Then, the counterclockwise rotation of the first operation lever 12 is
The right end of the first operation lever 12 contacts the adjustment screw 16
The first operation lever
The state of 12 is the smallest of the control hole 5 by the control valve element 6.
It is in an open state. Therefore, if the control hole 5 is in the small opening state,
The engine after the warm-up operation is completed.
Air suitable for the ring operation can be supplied to the engine. The adjustment of the first operation lever 12 is as follows.
Done by below. Position adjustment of the first operation lever 12
Is performed by screwing the adjusting screw 16.
You. That is, when the protrusion of the adjusting screw 16 is increased,
The rotation of the first operation lever 12 can be controlled in a clockwise direction.
The first operating lever 12 is turned counterclockwise by setting it small.
Rotation control. Also, the first operating lever 12 and the operating body 1
The position relationship with the operating rod 10A is screwed to the operating rod 10A.
This is performed by screwing a nut N that is set. Change
The positional relationship between the first operation lever 12 and the control valve body 6 is as follows.
The nut N screwed to the operating rod 6A of the control valve body 6 is screwed.
It is done by doing. Also, a control valve for the intermediate throttle body 1B
The body 6 is screwed to the second operating lever 20 on the operating rod 6A.
And the second operating lever 20 is
Link L1 to the first operation lever 12 synchronously.
It is. Further, a control valve for the left throttle body 1C.
The body 6 is screwed to the third operating lever 30 on the operating rod 6A.
And the third operating lever 30 is
Link L2 to the first operation lever 12 synchronously.
It is. As described above, the intermediate throttle body 1
The second operation lever 20 of B is operated first by the link L1.
The left throttle body 1C is connected to the lever 12
The third operation lever 30 is moved by the link L2 to the second operation lever.
-12, the second operating lever 2
0, the third operation lever 30 is synchronous with the first operation lever 12
This allows each throttle body to rotate
Movement control of the arranged control valve element 6 can be performed synchronously. [0015] Such conventional intake control.
The apparatus has the following problems. Each throttle body
The control valve element provided on the
So the mounting pitch of each throttle body has changed
Link, it is necessary to create a new link, and there is no versatility
No. In addition, links and controls around each throttle body
Throttle button that requires space to accommodate the lever
Is less flexible to deploy on vehicles including
Good for motorcycles with limited storage space, such as motorcycles.
Not good. Also, each throttle body has an operation
Lever, shaft that rotatably supports the operation lever, operation lever
Nuts and splices to clamp the
Parts and assembly man-hours
Increases and manufacturing costs cannot be reduced. Also,
The large number of parts, as in
Easy to adjust, tuning adjustment for each throttle body
Not easy. In addition, the system provided for each throttle body
The valve body is slid with a small gap in the sliding valve chamber
Control valve body and sliding valve chamber
Must be formed each time, reducing the manufacturing cost of parts.
I can't achieve it. The intake control device according to the present invention has
The purpose of the
Extremely sensitive to changes in the mounting pitch of the lottery body
Easy and inexpensive support and mounting on vehicles
To provide an intake control device having a high degree of freedom. And parts
And the number of assembly steps can be reduced, and each throttle body
Can be easily tuned and accurate
To provide an intake control device capable of performing tuning
With the goal. According to the present invention, there is provided an internal combustion engine comprising:
In order to achieve the above object, the intake control device
Is divided into an upstream intake passage and a downstream intake passage.
Intake passage, the upstream intake passage and the downstream intake passage
A tuned air passage that bypasses the throttle valve and communicates
Adjustment screw for adjusting and controlling the amount of air flowing through the passage
And a plurality of throttle bodies having
The air distributor supports the control valve body movably in the axial direction.
The sliding valve chamber, the bottom of the sliding valve chamber, and the bottom of the control valve body.
Auxiliary air opening into the air chamber formed by
An air introduction passage, and a side portion of a sliding valve chamber, wherein the control valve body is provided.
Multiple control holes whose opening into the air chamber is controlled by
And the control valve body is rotated in the sliding valve chamber in accordance with the temperature change.
To control the opening of the control hole into the air chamber
The thermosensitive body and the control valve
An adjusting rod for controlling the opening of the control hole.
Connect each control hole of the distributor from the throttle valve of each throttle body.
Distributed to the downstream intake passage with a distribution passage
And [Function] Normal temperature of the engine ambient temperature, end of engine warm-up operation
At the time, the lower surface of the control valve body of the air distributor is
The control holes are supported by abutment.
Is controlled. Downstream from the throttle valve of each throttle body
The intake passage on the side is controlled by the opening of the control hole.
1 Air is supplied with a distributor and tuned air
The second air is supplied through the passage. Therefore each throttle
The first air flows into the intake passage downstream of the throttle valve of the body.
The summed air with the second air is supplied. Institutional atmosphere
When the air temperature decreases, the control valve element synchronizes with the thermal
And the opening of each control hole increases with decreasing temperature.
Therefore, the intake air downstream of the throttle valve of each throttle body is
The channel can be supplied with an increased amount of first air via a distribution channel;
Accordingly, the amount of air to the engine can be increased. Also, open each control hole.
The mouth is adjusted by screwing the adjustment rod, which
Therefore, the minimum flow rate of the first air flowing through each distribution path can be adjusted.
You. Further, the amount of the second air flowing through the tuned air passage is controlled by a regulating switch.
It can be adjusted by screwing the screw. Adjustment
Adjustment of control hole by rod, tuning air by adjustment screw
By adjusting the passage, the optimal air for the engine ambient temperature
Can be automatically supplied to the engine via each throttle body
You. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an intake control in an internal combustion engine according to the present invention will be described.
One embodiment of the control device will be described with reference to the drawings. Figure 1 shows air distribution
FIG. 2 is a cross-sectional view taken along line XX of FIG.
FIG. Note that the same components as those in FIG.
Use a number. 40 is a feeling that the thermo wax member 8 is provided.
The lower part for storing the thermal responsive element H and the operating element 10 is open.
The actuating body 10 is
Urged upward, thereby causing the bottom 10
B is provided in contact with the lower end of the output rod 8A of the thermo wax member 8.
Is placed. In addition, 40A is the cold formed in the upper case 40.
This is a recirculating water passage where engine cooling water is introduced and
Temperature according to the engine temperature. Also this
Use a PTC heater instead of the cooling water passage 40A
The temperature control for the wax component 8 may be performed.
Reference numeral 41 denotes a sliding valve chamber 42 having a circular hole opening upward.
The lower case and the lower case.
The upper end of the case 41 is disposed in contact with the upper end of the slide valve chamber 42.
The opening is arranged facing the lower opening of the upper case 40.
Also, a plurality of control holes 43 are provided in the side portion 42A of the sliding valve chamber 42.
A, 43B, 43C are drilled and open.
The control holes are formed independently. In this embodiment,
Because it is used for three throttle bodies
Three control holes were formed. Further, the bottom portion 42B of the sliding valve chamber 42
The auxiliary air introduction passage 44 is open near the
Are positioned below the control holes 43A,.
Open to 45 is slidably disposed in the sliding valve chamber 42.
The control valve element 45 moves in the axial direction.
.. Are controlled to open and close. Soshi
And an operating rod insertion hole 45 formed at the center of the control valve body.
In A, below the bottom 10B of the operating body 10
A protruding operating rod 10A is inserted and arranged.
The body 45 is connected to a nut N screwed to the lower end of the operating rod 10A.
It is clamped by the pulling 46. The spring 46
Has one end locked to the bottom 10B of the operating body 10,
The end is locked to the upper surface 45B of the control valve body 45. Therefore,
The control valve body 45 and the operating body 10 move integrally and synchronously.
Will be. Further, the control valve is provided in the sliding valve chamber 42 as described above.
With the body 45 disposed, the control valve chamber 42 includes:
Bottom portion 42B of sliding valve chamber 42 and lower surface 45C of control valve body 45
And the air chamber 47 is formed by the
4. The control holes 43A, 43B, 43C are provided in the air chamber 47.
Open. 48 is screwed into the lower case 41,
Adjusting rod whose end is disposed in contact with the lower surface 45C of the control valve body 45
When the adjusting rod 48 is moved upward,
The opening of the control holes 43A,.
The control hole 4 is moved by moving the rod 48 downward.
.. Can be adjusted to the decreasing side. Reference numeral 50 designates a bore through which an intake passage 51 penetrates.
Throttle body that opens and closes the intake passage 51
And a throttle valve upstream of a throttle valve (not shown).
The downstream intake passage 51A is connected to the tuned air passage 52 by the tuned air passage 52.
To bypass the throttle valve. In the tuned air passage
A seat portion 52A is formed, and an opening of the seat portion 52A is formed.
Is a tapered portion 53A screwed to the throttle body 50
Is controlled by an adjusting screw 53 having or,
The tuned air passage 52 is, for example, restricted
Upstream tuned air passage connected to the intake passage upstream of the valve
52B and a lower portion that is connected to the intake passage 51A downstream of the throttle valve.
It is divided into a tuned air passage 52C on the upstream side. The throttle body 50 constituted as described above is
In the example, three throttle bodies are prepared and each throttle body is
Is connected to the institution via. 50A is the right in FIG.
50B is the middle throttle body
-, 50C is a left throttle body. And
The control hole 43A of the air distributor A is connected to the left through the distribution passage 54A.
Of the throttle body 50C downstream of the throttle valve
The control hole 43B communicates with the passage 51A and the distribution passage 54B
Downstream of the throttle valve of the right throttle body 50A
Side is connected to the intake passage 51A, and the control hole 43C is
Throttle of the middle throttle body 50B via the route 54C
It is communicated with the intake passage 51A downstream of the valve. Next, the operation will be described. First, the machine
Seki ambient temperature normal temperature state (for example, 25 ℃) or start
An end state of the warm-up operation after the operation will be described. Or
In such a temperature state, the thermosensitive body H in the air distributor A
Of the output rod 8 </ b> A according to the volume of the thermo wax member 8.
The size is determined to be large, and the axial position of the operating body 10 is determined by the output rod.
The bottom part 10B of the operating body 10 contacts the lower end of 8A and is positioned.
Is This is the spring force of the spring 11
This is because the spring force is set to be stronger than the spring force of 46. one
On the other hand, the control valve body 45 has the operating rod 10 in the operating rod insertion hole 45A.
A is inserted and operated with nut N and spring 46
It is held between the ends of the rod 10A. According to the above, the control valve element
45 corresponds to the large protrusion of the output rod 8A of the thermosensitive body H.
To move downward greatly, but the control valve
The lower movement of the body 45 is adjusted by the lower surface 45C of the control valve body 45.
It is regulated by contacting the upper end of the rod 48. In other words, before
In the temperature state (normal temperature, completion of warm-up operation), the control valve
The position of 45 is controlled by the adjusting rod 48. So the sky
Openings of control holes 43A, 43B, 43C facing air chamber 47
The area is controlled by a control valve body 45 controlled by an adjusting rod 48.
Will be determined. The lower surface 4 of the control valve body 45
After 5C contacts the upper end of the adjusting rod 48, the operating body 1
When 0 moves downward, the operating rod 10A is
The body 45 slides in the operating rod insertion hole 45A and moves downward.
Therefore, the control valve body 45 is not broken. Also,
The adjusting rod 48 can be screwed, and the adjusting rod 48 is moved upward.
By moving, the control hole 43A by the control valve body 45,
Can be increased, and the adjusting rod 48 is moved downward.
.. Can reduce the opening area of the control holes 43A,.
You. Then, the air is guided from the auxiliary air introduction passage 44 into the air chamber 47.
The air to be introduced is supplied through the opening of the control hole 43A.
The amount is controlled, and the first air flows through the distribution passage 54A to the left.
Intake passage downstream of throttle valve of throttle body 50C
It is supplied into 51A. The air in the air chamber 47 is restricted.
The amount of air is controlled by the opening of the control hole 43B and distributed.
The first air is supplied to the right throttle body 5 through the road 54B.
The air is supplied into the intake passage 51A downstream from the throttle valve of 0A.
It is. Further, the air in the air chamber 47 opens the control hole 43C.
The air volume is controlled by the mouth and is distributed via the distribution channel 54C.
The first air is the throttle valve of the middle throttle body 50B
The air is supplied to the downstream intake passage 51A. And
To the hole shape of each control hole and the side portion 42A of the sliding valve chamber 42
Of the control holes 43A, 43B,
43C into the respective distribution paths 54A, 54B, 54C.
The amount of the first air to be supplied can be the same. On the other hand, each throttle body 50A, 50
B, 50C, the adjustment screw 53
A positively regulated and controlled second air flows through each tuned air passage 52.
Through each throttle body via the intake
It is supplied into the road 51A. According to the above description, the ambient temperature of the engine ambient temperature
The throttle body in the
Intake passage downstream of throttle valves 50A, 50B, 50C
51A, through each control hole 43A, 43B, 43C.
The first power supplied from each distribution path 54A, 54B, 54C
Between the air and the second air supplied from each tuned air passage 52.
The summed air is supplied, and this
Engine at normal temperature and at the end of warm-up.
Idling operation can be performed. Each of the throttle bodies 50A, 50B,
Fine adjustment of the idling air amount at 50C
This is performed by screwing the screw 53. or,
Idling air amount during such idling operation
Of these, the supply burden ratio between the first air and the second air is set appropriately
It should be done. Next, when the ambient temperature of the engine is low,
A description will be given of the air control at the time of starting the door. Such temperature condition
, The volume of the thermo-wax member 8 of the thermosensitive body H
Is contracted, and the output rod 8A
Therefore, the protrusion D becomes small. According to this, the operating body 10 is
By the spring force of the ring 11, the bottom 10B of the operating body 10
Is in contact with the normal temperature state so that the
To move the operating body 10 upward.
According to the above, the spring 46 and the nut N
The control valve body 45 is also synchronized with the operating body 10 to output the rod 8A.
Is moved upward corresponding to the decrease in the protrusion D of. Above
Then, the control holes 43A controlled by the control valve body 45,
The opening area of the control hole 43A is increased.
According to the increased opening area, each control hole 4 is opened from the air chamber 47.
3A, 43B, 43C and distribution paths 54A, 54B, 5
4C, each throttle body 50A, 50B, 50
C is supplied into the intake passage 51A downstream from the throttle valve of C.
The amount of the first air can be increased. Therefore, each throttle
The intake passage 51A downstream of the throttle valve of the body
An increased first air supplied through the distribution line and each tuned
The sum of the air and the second air supplied from the air passage is
Supplied and increased in volume compared to normal temperature
The engine can be started reliably at low temperatures
Can be. Next, the engine after starting at the low temperature
Explaining warm-up operation,
The engine is warmed up gradually and the temperature rise
For example, heat-sensitive by cooling water flowing in the cooling water passage 40A
Applied to the responder H. And the thermosensitive element
According to the heating of H, the thermo wax member 8
It gradually expands as the temperature rises.
The protrusion D increases according to the expansion. According to the above,
The operating body 10 including the moving rod 10A is a protrusion D of the output rod 8A.
Increases in response to the spring force of the spring 11
The spring 46 and the nut N
The control valve body 45 held between the operating rod 10A by the
The control valve body 45 moves downward synchronously, and
The openings of A, 43B and 43C are reduced. Therefore, control
Through the holes 43A, 43B, 43C, the respective distribution paths 54A, 5A
4B, 54C, the amount of the first air supplied to the engine
It can gradually decrease as the engine temperature rises due to continuous rotation,
As a result, it is possible to perform a favorable engine warm-up operation. Then, the warm-up operation is completed and the engine temperature is sufficient.
When the output rod 8A is warmed, the protrusion D of the output rod 8A protrudes greatly,
The control valve element 45 has a lower surface 45C at the tip of the adjustment rod 48.
In the contact state, the downward movement of the control valve body 45 is prevented.
You. The control hole 4 at the position of the control valve body 45
After the warm-up operation is completed by the openings of 3A, 43B and 43C
The amount of the first air in the first air is determined.
After the warm-up operation is completed by the second air flowing through the air passage 52
The idling air amount of the engine at is determined. Heel
The idling air volume is
It is also the amount of air. The heat acting on the heat-sensitive responsive body H is further increased.
When it rises, the protrusion D of the output rod 8A further increases, and
10 is to move the control valve body 45 further downward.
However, this movement is prevented by the adjusting rod 48,
The operating rod 10A of the operating body 10 is subjected to the spring force of the spring 46.
Then, it moves downward in the operating rod insertion hole 45A. Follow
Excessive pressing force acts on the control valve body 45 to
5. The adjusting rod 48 is not deformed or broken. Note that the downstream side of the distribution path is directly
Without opening to the downstream intake passage 51A,
May be opened to the tuned air passage 52C. As described above, the intake control apparatus according to the present invention
According to the idling air in each throttle body
Air volume (first idling air volume at low temperature,
Idling air volume during warm-up, after completion of warm-up operation
And the amount of idling air at room temperature)
The second supplied from the tuned air passage provided in the body
Air and air supplied through control holes and distribution lines from the air distributor
Formed by the summed air with the first air
In this case, the air distributor and each throttle body are
Are connected by different pipes, so it is effective in the following points
It is. That is, the mounting pitch of each throttle body
Is changed, simply change the length of the distribution channel.
Therefore, it is possible to respond and the mounting layout is high. or,
As before, the operating lever for each throttle body,
Since no link is required, the number of parts and assembly
A large reduction can be provided, and an inexpensive intake control device can be provided. So
Of each throttle body
It is no longer necessary to provide control valves and control holes, and
And no need for operating levers and links.
It is suitable for compacting the device. Also, sliding part
Concentrate in the air distributor and slide from each throttle body
The sliding durability test is air distribution by eliminating the part.
Need only be implemented, which increases development efficiency.
I could improve. In addition, idling in the normal temperature condition
Qi needs to be supplied exactly,
A first air supplied from a distribution passage and a tuned air passage
From the second air supplied from the
The second air amount is manually adjusted by the adjustment screw placed on the road.
Adjustments so that the throttle body
Accurate tuning control of idling air. Further air distribution
The pipes are connected to the throttle body and each throttle body with a distribution path.
The mounting between each throttle body.
The degree of freedom and arrangement of the air distributor can be greatly improved.
Especially for vehicles with limited mounting space, such as motorcycles
Is preferred.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an air distributor of an intake control device for an internal combustion engine according to the present invention. FIG. 2 is a transverse sectional view taken along line XX of FIG. FIG. 3 is a longitudinal sectional view showing one embodiment of an intake control device for an internal combustion engine according to the present invention. FIG. 4 is a longitudinal sectional view showing a conventional intake control device. [Description of Signs] 42 Sliding valve chambers 43A, 43B, 43C Control hole 44 Auxiliary air introduction path 45 Control valve element 47 Air chamber 48 Adjusting rod 50 Throttle body 51 Intake passage 52 Tuning air passage 53 Adjusting screw A Air distributor

Claims (1)

Claims 1. An intake passage 51 divided into an upstream intake passage and a downstream intake passage 51A by a throttle valve, and an upstream intake passage and a downstream intake passage 51A. A tuned air passage 52 which bypasses the throttle valve and communicates therewith;
Adjusting screw 53 for adjusting and controlling the amount of air flowing through
The air distributor A includes a sliding valve chamber 42 that supports the control valve body 45 movably in the axial direction, and a bottom portion 42B of the sliding valve chamber 42.
And an auxiliary air introduction passage 44 that opens into an air chamber 47 formed by the control valve body 45 and the lower surface 45C facing the bottom.
, A plurality of control holes 43A, 43B,... Formed in the side portion 2A of the sliding valve chamber 42 and whose opening into the air chamber 47 is controlled by the control valve body, Are moved in the axial direction in the sliding valve chamber 42 to control the opening of the control holes 43A, 43B,... Into the air chamber 47; An adjusting rod 48 for controlling the opening of the control holes 43A, 43B,... By the valve body 45;
3A, 43B,... Are distributed to the intake passage 51A downstream of the throttle valve of each throttle body 50 by the distribution passages 54A, 54B,.
An intake control device for an internal combustion engine, characterized in that: