JP6968636B2 - Intake control device - Google Patents

Description

The present invention relates to an intake air control device that controls the intake air of an internal combustion engine.

Conventionally, as an intake control device for controlling the intake of an internal combustion engine, an intake control device including a plurality of intake pipes through which the intake air introduced into the internal combustion engine passes and a body (throttle body) having these intake pipes integrated. Is known (see, for example, Patent Document 1).

Each intake pipe is provided with a valve body for adjusting the intake amount via a valve shaft supported by the body. The valve body of each intake pipe is controlled to open and close by rotating the valve shaft via a power transmission mechanism by a motor.

The intake pressure in the intake pipe is introduced into the intake pressure sensor that measures the intake pressure in each intake pipe by the pressure guiding pipe.

Japanese Unexamined Patent Publication No. 2007-64061

However, in the intake control device of Patent Document 1, a pressure guiding pipe is used to introduce the intake pressure in each intake pipe to the intake pressure sensor. The pressure guiding pipe needs to be firmly fixed so as not to come off due to the vibration of the internal combustion engine, and it is also necessary to use a pressure guiding pipe made of an expensive material to prevent deterioration. Therefore, the use of the pressure guiding pipe hinders the low-cost configuration of the intake control device. Further, since the pressure guiding pipe requires a space for arranging it, it is disadvantageous from the viewpoint of space saving.

An object of the present invention is to provide an intake control device capable of introducing an intake pressure in an intake pipe into an intake pressure sensor without using a pressure guiding pipe in view of the above-mentioned problems of the prior art.

The intake control device according to the first invention is
An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes through which intake air introduced into the internal combustion engine passes,
A valve body provided in each intake pipe to adjust the amount of intake air in the intake pipe,
A connection portion that connects at least a pair of intake pipes that are adjacent to each other among the plurality of intake pipes,
A body having the plurality of intake pipes and the connection portion integrally,
It is equipped with an intake pressure sensor that measures the intake pressure downstream of the valve body of the intake pipe.
The body is
One end is closed inside the connection portion, and the other end is an intake pressure detection pipe connected to a pipeline leading to the detection portion of the intake pressure sensor.
Passing through the inside of the connection portion, one end opens to the inner wall surface of one of the pair of intake pipes downstream of the valve body, and the other end is inside the connection portion to the intake pressure detection pipe. With a linear intake pressure introduction pipe that leads to
One end is closed inside the connection, and the other end is a first purging passage to which a pipeline leading to the canister is connected.
Passing through the inside of the connection portion, one end of the pair of intake pipes opens to the inner wall surface downstream of the valve body of one of the intake pipes, and the other end of the connection portion is connected to the first passage for purging. It is equipped with a linear second passage for purging that leads inside.
Second passage the purge, Ri the intake pressure introducing pipe parallel der,
At least a part of each of the intake pressure detection pipe and the purging first passage is arranged on the same axis inside the through hole linearly provided in the connection portion.
One end of the intake pressure detection tube or the first passage for purging that is closed in the connection portion is closed by an insertion component inserted into the through hole.
The insertion component is characterized in that it constitutes at least a part of the intake pressure detection tube or the first passage for purging in the direction in which it is inserted into the through hole.

According to the first invention, since the axial directions of the intake pressure introduction pipe and the purging second passage are the same, when forming these, the drill for forming the intake pressure introduction pipe and the purging second passage are formed. It is possible to process from the same direction using a drill for forming. Therefore, since it is not necessary to set the machining angle for each machining, the intake pressure introduction pipe and the second passage for purging can be easily formed.

Further, since the intake pressure introduction pipe connects the intake pipe and the intake pressure detection pipe through the inside of the connection portion, the intake pressure in the intake pipe can be introduced into the intake pressure sensor without going through the pipe material. ..

By the way, in order to arrange the intake pressure detection pipe and the first passage for purging on the front and back surfaces of the connection portion, holes are drilled from the front and back surfaces up to these closed ends, and the intake pressure detection pipe and the first purge passage are drilled. It is also conceivable to form the passage in a straight line. However, in this case, if the distance between the closed ends is not set large, the ends may be damaged and the intake pressure detection pipe and the first purging passage may communicate with each other.

In this regard, according to the first invention, one end closed in the connection portion of the intake pressure detection pipe or the first passage for purging is closed by the insertion component inserted into the through hole, so that the distance between the closed ends is closed. Can be set small without any problems. Therefore, the intake pressure detection pipe and the first passage for purging can be arranged in a straight line without any trouble in the connection portion.

Therefore, the intake pressure detection tube and the first passage for purging can be formed only by forming the through hole by drilling once and inserting the insertion component into the through hole.
The intake control device according to the second invention is
An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes through which intake air introduced into the internal combustion engine passes,
A valve body provided in each intake pipe to adjust the amount of intake air in the intake pipe,
A connection portion that connects at least a pair of intake pipes that are adjacent to each other among the plurality of intake pipes,
A body having the plurality of intake pipes and the connection portion integrally,
It is equipped with an intake pressure sensor that measures the intake pressure downstream of the valve body of the intake pipe.
The body is
One end is closed inside the connection portion, and the other end is an intake pressure detection pipe connected to a pipeline leading to the detection portion of the intake pressure sensor.
Passing through the inside of the connection portion, one end opens to the inner wall surface of one of the pair of intake pipes downstream of the valve body, and the other end is inside the connection portion to the intake pressure detection pipe. With a linear intake pressure introduction pipe that leads to
One end is closed inside the connection, and the other end is a first purging passage to which a pipeline leading to the canister is connected.
Passing through the inside of the connection portion, one end of the pair of intake pipes opens to the inner wall surface downstream of the valve body of one of the intake pipes, and the other end of the connection portion is connected to the first passage for purging. It is equipped with a linear second passage for purging that leads inside.
The second passage for purging is parallel to the intake pressure introduction pipe, and is parallel to the intake pressure introduction pipe.
The intake pressure introduction pipe and the purging second passage are characterized to be located on a straight line passing through an opening on the downstream side of the one intake pipe.

The intake control device according to the third invention is
An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes through which intake air introduced into the internal combustion engine passes,
A valve body provided in each intake pipe to adjust the amount of intake air in the intake pipe,
A connection portion that connects at least a pair of intake pipes that are adjacent to each other among the plurality of intake pipes,
A body having the plurality of intake pipes and the connection portion integrally formed by integral molding,
It is equipped with an intake pressure sensor that measures the intake pressure downstream of the valve body of the intake pipe.
The body is
One end is closed inside the connection portion, and the other end is an intake pressure detection pipe connected to a pipeline leading to the detection portion of the intake sensor.
Passing through the inside of the connection portion, one end opens to the inner wall surface of one of the pair of intake pipes downstream of the valve body, and the other end is inside the connection portion to the intake pressure detection pipe. With a linear intake pressure introduction pipe that leads to
Passing through the inside of the connection portion, one end opens to the inner wall surface downstream of the valve body of one of the pair of intake pipes, and the other end is upstream of the valve body of the other intake pipe. With a straight bypass passage that opens to the inner wall of the
The bypass passage, Ri parallel der into the intake-pressure pipe,
The intake pressure introduction pipe and the bypass passage are characterized in that they are located on a straight line passing through an opening on the downstream side of the one intake pipe.

According to the third invention, the intake pressure introduction pipe and the bypass passage are provided with the intake pressure introduction pipe forming drill and the bypass passage forming drill set to have the same axial direction on the downstream side of the intake pipe. It can be easily formed by inserting it through an opening and drilling a hole.

It is sectional drawing which shows the part of the intake pipe and the connection part of the intake control device which concerns on one Embodiment of this invention. It is a front view of the part of the intake pipe and the connection part of FIG. FIG. 3A is a cross-sectional view showing a modified example of a portion of the connection portion in the intake control device of FIG. 1, and FIG. 3B is a cross-sectional view showing another modified example of the portion of the connection portion. FIG. 4A is a front view showing a portion of an intake pipe and a connection portion of the intake control device according to another embodiment of the present invention, and FIG. 4B is a bottom view thereof.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The intake control device according to the embodiment of the present invention controls the intake amount of the internal combustion engine.

As shown in FIG. 1, the intake control device 1 includes two intake pipes 2a and 2b through which intake air introduced into an internal combustion engine passes, a connection portion 3 connecting the intake pipes 2a and 2b to each other, an intake pipe 2a, and the intake pipe 2a. It includes a body 4 having 2b and a connecting portion 3 integrated by integral molding or the like.

As shown in FIG. 2, each intake pipe 2a and 2b is provided with a valve body 5 for adjusting the intake amount in the intake pipes 2a and 2b. The upstream side (upper side of FIG. 2) of the intake pipes 2a and 2b is connected to the air cleaner, and the downstream side (lower side of FIG. 2) is connected to the combustion chamber of the internal combustion engine. As the valve body 5, a butterfly type is used here. Each valve body 5 of the intake pipes 2a and 2b is rotatably supported by the body 4 via a common valve shaft 6.

Further, the intake control device 1 is provided with an intake pressure sensor 7 that measures the intake pressure downstream of the valve body 5 of the intake pipes 2a and 2b. The intake control device 1 may include a control unit for controlling an internal combustion engine, an accelerator position sensor, and the like.

The body 4 has an intake pressure detection pipe 9 having one end closed inside the connection portion 3 and the other end connected to a pipe line 8 leading to a detection portion of the intake pressure sensor 7. Further, the body 4 has two linear intake pressure introduction pipes 10a and 10b passing through the inside of the connection portion 3. One end of the intake pressure introduction pipes 10a and 10b opens to the inner wall surface downstream of the valve body 5 of the intake pipes 2a and 2b, and the other end opens to the inner wall surface of the intake pressure detection pipe 9 inside the connection portion 3. do.

Further, the body 4 has a purging first passage 11 in which one end is closed inside the connection portion 3 and a conduit connected to the canister is connected to the other end, and two linear purging second passages. 12a and 12b are provided. The purging second passages 12a and 12b pass through the inside of the connecting portion 3, one end thereof opens to the inner wall surface downstream of the valve body 5 of the intake pipes 2a and 2b, and the other end becomes the purging first passage 11. On the other hand, it communicates inside the connection portion 3.

The purging second passages 12a and 12b and the intake pressure introduction pipes 10a and 10b are parallel to each other, respectively. At least a part of each of the intake pressure detecting pipe 9 and the purging first passage 11 is arranged on the same axis inside the through hole 13 linearly provided in the connecting portion 3.

One end closed in the connection portion 3 of the intake pressure detection pipe 9 and the first purging passage 11 is closed by the insertion component 14 inserted into the through hole 13. That is, one end of the intake pressure detection tube 9 is closed by the outer end surface of the insertion component 14 on the insertion direction side, and the inner peripheral wall of the intake pressure detection tube 9 is composed of the inner peripheral wall of the through hole 13. Further, the one end of the first purging passage 11 is closed by the inner surface of the insertion component 14 on the one end side.

The insertion component 14 constitutes the first purging passage 11 along the direction in which it is inserted into the through hole 13. The first purging passage 11 and the second purging passages 12a and 12b are connected via connection holes 14a and 14b provided in the insertion component 14, respectively.

The intake pressure introduction pipes 10a and 10b and the purging second passages 12a and 12b are parallel to each other, and as shown in FIG. 2, they are located on a straight line passing through the opening of the intake pipe 2a or 2b. ing. Therefore, the intake pressure introduction pipes 10a and 10b and the purging second passages 12a and 12b are formed by using a drill.

That is, the axial directions of the drill forming the intake pressure introduction pipe 10a and the drill forming the second purging passage 12a are set in the same direction. Then, by inserting these drills from the opening on the downstream side of the intake pipe 2a and drilling the connection portion 3, the intake pressure introduction pipe 10a and the second purging passage 12a are easily formed. Further, in the same manner, the intake pressure introduction pipe 10b and the purging second passage 12b are formed.

Through the intake pressure introduction pipes 10a and 10b thus formed, the intake pressure is introduced into the intake pressure detection pipe 9 from the downstream side of the valve body 5 of the intake pipes 2a and 2b, and the intake pressure sensor 7 is introduced through the pipe line 8. It acts on the detection part of. As a result, the intake air pressure is detected by the intake air pressure sensor 7 without any trouble.

Further, the purging first passage 11 and the purging second passages 12a and 12b formed as described above are to purge the evaporated fuel adsorbed by the canister without any trouble and supply it to the intake pipes 2a and 2b. Can be done.

As described above, according to the present embodiment, the intake pressure introduction pipe 10a and the purging second passage 12a are parallel to each other. Therefore, when forming these, a drill and a purge for forming the intake pressure introduction pipe 10a are performed. Machining can be performed from the same direction using a drill for forming the second passage 12a. Therefore, it is not necessary to set the machining angle each time each machining is performed, so that the machining can be easily performed. The same applies to the intake pressure introduction pipe 10b and the purging second passage 12b.

Further, since the intake pressure introduction pipes 10a and 10b connect the intake pipes 2a and 2b and the intake pressure detection pipe 9 through the inside of the connection portion 3, the intake pipes 2a and 2b are inside the intake pipes 2a and 2b without using a pipe material. The intake air pressure can be introduced into the intake air pressure sensor 7.

FIG. 3A shows a modified example of the vicinity of the intake pressure sensor 7 in the connection portion 3. In FIG. 3A, the same elements as in FIG. 1 are designated by the same reference numerals.

In this modification, the insertion component 15 provided integrally with the intake pressure sensor 7 on the pipeline 8 side of the intake pressure sensor 7 is inserted into the through hole 13. In the insertion component 15, an intake pressure detection pipe 16 connected to a pipe line 8 leading to a detection unit of the intake pressure sensor 7 is provided. Therefore, the end of the intake pressure detection pipe 16 on the opposite side of the pipe line 8 is closed by the inside of the insertion component 15.

The intake pressure introduction pipes 10a and 10b and the intake pressure detection pipe 16 are connected to each other via communication holes 17a and 17b provided in the insertion component 15, respectively.

The tip of the insertion component 18 is inserted into the end of the through hole 13 on the opposite side of the intake pressure sensor 7. The insertion component 18 is provided with a hole penetrating in the length direction thereof. The first passage 19 for purging is configured by this hole and the space defined by the end faces of the insertion component 15 and the insertion component 18 of the through hole 13. The purging second passages 12a and 12b are directly connected to the portion of the through hole 13 in the purging first passage 19.

FIG. 3B shows a modified example of the vicinity of the intake pressure sensor 7 in the connection portion 3. In FIG. 3B, the same elements as in FIG. 1 are designated by the same reference numerals.

In this modification, the intake pressure sensor 7 and the insertion component 20 are integrated, and the end portion of the insertion component 20 on the opposite side of the intake pressure sensor 7 protrudes from the through hole 13. In the insertion component 20, an intake pressure detection tube 21 extending in the length direction thereof and a first passage for purging 22 are provided.

Therefore, the mutually close ends of the intake pressure detection tube 21 and the purging first passage 22 are both closed by the inside of the insertion component 20. The intake pressure detection pipe 21 and the intake pressure introduction pipes 10a and 10b are connected via communication holes 17a and 17b provided in the insertion component 20, respectively, as in the case of the modification of FIG. 3A.

The purging first passage 22 and the purging second passages 12a and 12b are connected via connection holes 14a and 14b provided in the insertion component 20, respectively, as in the case of the embodiment of FIG.

FIG. 4A is a schematic front view of the intake air control device according to another embodiment of the present invention, and FIG. 4B is a bottom view thereof. In these figures, only the main elements are shown in order to simply represent the features of the invention. In FIGS. 4A and 4B, the same elements as those in FIG. 1 are designated by the same reference numerals.

As shown in FIGS. 4A and 4B, the intake control device 1b includes intake pipes 2a and 2b through which intake air introduced into the internal combustion engine passes, and intake amounts in the intake pipes 2a and 2b provided in the intake pipes 2a and 2b. It is provided with a valve body 5 for adjusting. The intake pipes 2a and 2b are connected to each other by the connecting portion 3b. The intake pipes 2a and 2b and the connecting portion 3b are integrated by integral molding or the like to form the body 4b.

The body 4b is provided with an intake pressure sensor 7 that measures the intake pressure downstream of the valve body 5 of the intake pipes 2a and 2b. Further, the body 4b has a linear intake pressure that opens inside the connection portion 3b on the inner wall surface of the intake pressure detection pipe 23 and the intake pressure detection pipe 23 that are connected to the pipeline leading to the detection portion of the intake sensor 7. The introduction pipes 24a and 24b are provided.

One end of the intake pressure detection pipe 23 is closed inside the connection portion 3b, and the other end is connected to a pipe line leading to the detection portion of the intake sensor 7. The intake pressure introduction pipes 24a and 24b pass through the inside of the connection portion 3b, one end thereof opens to the inner wall surface downstream of the valve body 5 of the intake pipes 2a and 2b, and the other ends of the intake pressure detection pipe 23. An opening is made inside the connection portion 3 on the inner wall surface.

Further, the body 4b passes through the inside of the connecting portion 3b, one end of which is open to the inner wall surface downstream of the valve body 5 of the intake pipes 2a and 2b, and the other end of each is from the valve body 5 of the intake pipes 2b and 2a. Also includes linear bypass passages 25a and 25b that open to the upstream inner wall surface. The bypass passages 25a and 25b are parallel to the intake pressure introduction pipes 24a and 24b, respectively.

According to the present embodiment, the intake pressure introduction pipes 24a and 24b and the bypass passages 25a and 25b have the same axial direction as in the case of the intake pressure introduction pipes 10a and 10b and the second passages 12a and 12b for purging. By inserting the drill for forming the intake pressure introduction pipes 24a and 24b and the drill for forming the bypass passages 25a and 25b set in 1 through the openings on the downstream side of the intake pipes 2a and 2b, the holes can be easily drilled. Can be formed.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto. For example, the number of intake pipes may be 3 or more, not limited to the case of having two intake pipes 2a and 2b. Even in this case, the present invention can be applied to at least a pair of adjacent intake pipes.

1, 1b ... Intake control device, 2a, 2b ... Intake pipe, 3, 3b ... Connection, 4, 4b ... Body, 5 ... Valve body, 6 ... Valve shaft, 7 ... Intake pressure sensor, 8 ... Pipe line, 9 ... Intake pressure detection pipe, 10a, 10b ... Intake pressure introduction pipe, 11 ... Purge first passage, 12a, 12b ... Purge second passage, 13 ... Through hole, 14 ... Insertion part, 14a, 14b ... Connection hole, 15 ... Insertion part, 16 ... Intake pressure detection tube, 17a, 17b ... Communication hole, 18 ... Insertion part, 19 ... First passage for purging, 20 ... Insertion part, 21 ... Intake pressure detection tube, 22 ... First for purging Passage, 23 ... Intake pressure detection pipe, 24a, 24b ... Intake pressure introduction pipe, 25a, 25b ... Bypass passage.

Claims (3)

An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes through which intake air introduced into the internal combustion engine passes,
A valve body provided in each intake pipe to adjust the amount of intake air in the intake pipe,
A connection portion that connects at least a pair of intake pipes that are adjacent to each other among the plurality of intake pipes,
A body having the plurality of intake pipes and the connection portion integrally,
It is equipped with an intake pressure sensor that measures the intake pressure downstream of the valve body of the intake pipe.
The body is
One end is closed inside the connection portion, and the other end is an intake pressure detection pipe connected to a pipeline leading to the detection portion of the intake pressure sensor.
Passing through the inside of the connection portion, one end opens to the inner wall surface of one of the pair of intake pipes downstream of the valve body, and the other end is inside the connection portion to the intake pressure detection pipe. With a linear intake pressure introduction pipe that leads to
One end is closed inside the connection, and the other end is a first purging passage to which a pipeline leading to the canister is connected.
Passing through the inside of the connection portion, one end of the pair of intake pipes opens to the inner wall surface downstream of the valve body of one of the intake pipes, and the other end of the connection portion is connected to the first passage for purging. It is equipped with a linear second passage for purging that leads inside.
Second passage the purge, Ri the intake pressure introducing pipe parallel der,
At least a part of each of the intake pressure detection pipe and the purging first passage is arranged on the same axis inside the through hole linearly provided in the connection portion.
One end of the intake pressure detection tube or the first passage for purging that is closed in the connection portion is closed by an insertion component inserted into the through hole.
The insertion component is an intake control device comprising at least a part of the intake pressure detection tube or the first passage for purging in a direction in which the insertion component is inserted into the through hole. An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes through which intake air introduced into the internal combustion engine passes,
A valve body provided in each intake pipe to adjust the amount of intake air in the intake pipe,
A connection portion that connects at least a pair of intake pipes that are adjacent to each other among the plurality of intake pipes,
A body having the plurality of intake pipes and the connection portion integrally,
It is equipped with an intake pressure sensor that measures the intake pressure downstream of the valve body of the intake pipe.
The body is
One end is closed inside the connection portion, and the other end is an intake pressure detection pipe connected to a pipeline leading to the detection portion of the intake pressure sensor.
Passing through the inside of the connection portion, one end opens to the inner wall surface of one of the pair of intake pipes downstream of the valve body, and the other end is inside the connection portion to the intake pressure detection pipe. With a linear intake pressure introduction pipe that leads to
One end is closed inside the connection, and the other end is a first purging passage to which a pipeline leading to the canister is connected.
Passing through the inside of the connection portion, one end of the pair of intake pipes opens to the inner wall surface downstream of the valve body of one of the intake pipes, and the other end of the connection portion is connected to the first passage for purging. It is equipped with a linear second passage for purging that leads inside.
Second passage the purge, Ri the intake pressure introducing pipe parallel der,
The intake control device characterized in that the intake pressure introduction pipe and the purge second passage are located on a straight line passing through an opening on the downstream side of the one intake pipe. An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes through which intake air introduced into the internal combustion engine passes,
A valve body provided in each intake pipe to adjust the amount of intake air in the intake pipe,
A connection portion that connects at least a pair of intake pipes that are adjacent to each other among the plurality of intake pipes,
A body having the plurality of intake pipes and the connection portion integrally formed by integral molding,
It is equipped with an intake pressure sensor that measures the intake pressure downstream of the valve body of the intake pipe.
The body is
One end is closed inside the connection portion, and the other end is an intake pressure detection pipe connected to a pipeline leading to the detection portion of the intake sensor.
Passing through the inside of the connection portion, one end opens to the inner wall surface of one of the pair of intake pipes downstream of the valve body, and the other end is inside the connection portion to the intake pressure detection pipe. With a linear intake pressure introduction pipe that leads to
Passing through the inside of the connection portion, one end opens to the inner wall surface downstream of the valve body of one of the pair of intake pipes, and the other end is upstream of the valve body of the other intake pipe. With a straight bypass passage that opens to the inner wall of the
The bypass passage, Ri parallel der into the intake-pressure pipe,
An intake control device characterized in that the intake pressure introduction pipe and the bypass passage are located on a straight line passing through an opening on the downstream side of the one intake pipe.

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