JP6942570B2

JP6942570B2 - Intake control device

Info

Publication number: JP6942570B2
Application number: JP2017169687A
Authority: JP
Inventors: 正輝山瀬; 大介白井田
Original assignee: Hitachi Astemo Ltd
Current assignee: Astemo Ltd
Priority date: 2017-09-04
Filing date: 2017-09-04
Publication date: 2021-09-29
Anticipated expiration: 2037-09-04
Also published as: JP2019044710A

Description

本発明は、内燃機関の吸気を制御する吸気制御装置に関する。 The present invention relates to an intake air control device that controls the intake air of an internal combustion engine.

従来、内燃機関の吸気を制御する吸気制御装置として、内燃機関に導入される吸気が通る複数の吸気管と、これらの吸気管を一体化して有するボディ（スロットルボディ）とを備えた吸気制御装置が知られている（例えば、特許文献１参照）。 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 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).

特許文献１の吸気制御装置において、各吸気管には、吸気量を調整するための弁体が、ボディによって支持された弁軸を介して設けられる。各吸気管の弁体は、モータにより、動力伝達機構を介して弁軸を回転させることによって開閉駆動される。複数の吸気管は、上下に延在し、かつ左右に沿って配列される。 In the intake control device of 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 opened and closed by a motor by rotating the valve shaft via a power transmission mechanism. The plurality of intake pipes extend vertically and are arranged along the left and right sides.

吸気管内の吸気圧を測定する吸気圧センサ及び吸気圧センサへの配線用のカプラは、吸気管の配列の前側に配置される。また、上述のモータも、吸気管の配列の前側に配置される。 The intake pressure sensor for measuring the intake pressure in the intake pipe and the coupler for wiring to the intake pressure sensor are arranged in front of the arrangement of the intake pipes. The motor described above is also arranged on the front side of the intake pipe array.

特開２００７−６４０６１号公報Japanese Unexamined Patent Publication No. 2007-64061

しかしながら、上記特許文献１の吸気制御装置では、吸気圧センサ及びそのカプラと、弁体を開閉駆動するモータとが、ともに吸気管の配列の前側に配置される。このため、吸気圧センサ及びそのカプラの配置位置がモータの存在により制限され、吸気圧センサ及びそのカプラを、吸気管の配列の前側における都合の良い場所に配置するのが困難である。 However, in the intake control device of Patent Document 1, the intake pressure sensor and its coupler and the motor for opening and closing the valve body are both arranged on the front side of the arrangement of the intake pipes. Therefore, the arrangement position of the intake pressure sensor and its coupler is limited by the presence of the motor, and it is difficult to arrange the intake pressure sensor and its coupler in a convenient place on the front side of the arrangement of the intake pipes.

本発明の目的は、かかる従来技術の課題に鑑み、吸気圧センサ及びそのカプラを、モータの存在により制限されることなく、高い自由度で配置することができる吸気制御装置を提供することにある。 An object of the present invention is to provide an intake air control device capable of arranging an intake pressure sensor and a coupler thereof with a high degree of freedom without being restricted by the presence of a motor, in view of the above problems of the prior art. ..

第１発明に係る吸気制御装置は、
内燃機関の吸気量を制御する吸気制御装置であって、
第１方向に延在し、かつ該第１方向と交差する第２方向に沿って配列され、前記内燃機関に導入される吸気が通る複数の吸気管と、
各吸気管に設けられて該吸気管における吸気量を調整する弁体と、
各吸気管の弁体に共通する弁軸と、
前記弁軸を介して各吸気管の弁体の開閉駆動を制御するモータと、
前記モータの駆動力を前記弁軸に伝達する動力伝達機構と、
前記弁体よりも下流の各吸気管内の吸気圧を測定する吸気圧センサ及び該吸気圧センサへの配線用の第１カプラと、
前記吸気管それぞれの前記弁体より上流側と下流側とを接続するバイパス通路と、
前記バイパス通路の流量を調整するアイドルスクリューと、
前記吸気管それぞれの前記弁体よりも下流に燃料を噴射するインジェクタと、
前記インジェクタへの配線用の第２カプラと、
前記インジェクタ同士を連結するとともに該インジェクタに燃料を供給する燃料配管をと備え、
前記第１方向及び前記第２方向に交差する第３方向において、前記モータは、前記吸気管の配列の一方の側に配置され、前記吸気圧センサ及び前記第１カプラは、他方の側に配置されており、
前記アイドルスクリューの頭部は、前記第３方向において、前記吸気管の配列の前記他方の側に位置し、かつ該他方の側に向いており、
前記インジェクタ、前記第２カプラ、及び前記燃料配管は、前記第３方向において、前記吸気管の配列の前記他方の側に位置しており、
前記吸気管は、それぞれ前記弁体よりも下流側に開口部を備え、
前記開口部同士は第１の管路によって接続されており、
前記第１の管路は、前記吸気圧センサに第２の管路によって接続されており、
前記他方の側から見たときに、前記アイドルスクリューの頭部は、前記燃料配管と前記第１の管路とが対向する範囲であってかつ、前記複数の吸気管に配置された前記インジェクタ同士が対向する範囲に配置されており、
前記第３方向に直交する面に前記吸気制御装置を投影したときに、前記アイドルスクリューの頭部は、前記インジェクタと前記燃料配管と前記第１の管路とが投影される範囲の外に投影されることを特徴とする。 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 extending in the first direction and arranged along the second direction intersecting the first direction and through which the 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,
The valve shaft common to the valve body of each intake pipe,
A motor that controls the opening / closing drive of the valve body of each intake pipe via the valve shaft,
A power transmission mechanism that transmits the driving force of the motor to the valve shaft,
An intake pressure sensor that measures the intake pressure in each intake pipe downstream of the valve body, and a first coupler for wiring to the intake pressure sensor.
A bypass passage connecting the upstream side and the downstream side of the valve body of each of the intake pipes,
An idle screw that adjusts the flow rate of the bypass passage and
An injector that injects fuel downstream of the valve body of each of the intake pipes,
A second coupler for wiring to the injector,
A fuel pipe for connecting the injectors and supplying fuel to the injectors is provided.
In the first direction and the third direction intersecting the second direction, the motor is arranged on one side of the array of intake pipes, and the intake pressure sensor and the first coupler are arranged on the other side. Has been
The head of the idle screw is located on the other side of the array of intake pipes and faces the other side in the third direction.
The injector, the second coupler, and the fuel pipe are located on the other side of the intake pipe array in the third direction.
Each of the intake pipes has an opening on the downstream side of the valve body.
The openings are connected to each other by a first pipeline.
The first pipeline is connected to the intake pressure sensor by a second pipeline.
When viewed from the other side, the head of the idle screw is in a range where the fuel pipe and the first pipeline face each other, and the injectors arranged in the plurality of intake pipes are connected to each other. Are placed in the opposite range,
When the intake control device is projected onto a plane orthogonal to the third direction, the head of the idle screw is projected outside the range in which the injector, the fuel pipe, and the first pipeline are projected. It is characterized by being done.

第１発明によれば、吸気圧センサ及び第１カプラを、モータの存在により制限されることなく、第３方向における上記の他方の側に、高い自由度で配置することができる。 According to the first invention, the intake pressure sensor and the first coupler can be arranged with a high degree of freedom on the other side of the above in the third direction without being limited by the presence of the motor.

また、吸気制御装置を、モータ側に内燃機関のシリンダヘッドが位置するように内燃機関に取り付けることによって、アイドルスクリューを、シリンダヘッドの存在により制限されることなく、第３方向における上記の他方の側に、高い自由度で配置することができる。 Further, by attaching the intake control device to the internal combustion engine so that the cylinder head of the internal combustion engine is located on the motor side, the idle screw is not limited by the presence of the cylinder head, and the other of the above in the third direction. It can be placed on the side with a high degree of freedom.

また、吸気制御装置を、モータ側に内燃機関のシリンダヘッドが位置するように内燃機関に取り付けることによって、インジェクタ及び第２カプラを、シリンダヘッドの存在により制限されることなく、第３方向における上記他方の側に、高い自由度で配置することができる。 Further, by attaching the intake control device to the internal combustion engine so that the cylinder head of the internal combustion engine is located on the motor side, the injector and the second coupler are not limited by the presence of the cylinder head, and the above-mentioned in the third direction. It can be placed on the other side with a high degree of freedom.

また、吸気制御装置全体の重量バランスが、排気管の配列の第３方向における両側にほぼ均等になるので、吸気制御装置の振動に対する耐性を向上させることができる。 Further, since the weight balance of the entire intake control device is substantially equal on both sides in the third direction of the arrangement of the exhaust pipes, the resistance of the intake control device to vibration can be improved.

第２発明に係る吸気制御装置は、
前記他方の側から見たときに、前記吸気圧センサは、前記燃料配管と前記第１の管路とが対向する範囲であってかつ、前記複数の吸気管に配置された前記インジェクタ同士が対向する範囲の外に配置されており、
前記第２の管路は、前記第１の管路の略中間地点から前記吸気圧センサに接続しており、
前記第２の管路の少なくとも一部は、前記他方の側から見たときに、前記燃料配管と前記第１の管路とが対向する範囲であってかつ、前記複数の吸気管に配置された前記インジェクタ同士が対向する範囲に配置されており、
前記第３方向に直交する面に前記吸気制御装置を投影したときに、前記アイドルスクリューの頭部は、前記第２の管路が投影される範囲の外に投影されることを特徴とする。 The intake control device according to the second invention is
When viewed from the other side, the intake pressure sensor has the range in which the fuel pipe and the first pipeline face each other, and the injectors arranged in the plurality of intake pipes face each other. It is located outside the range of
The second pipeline is connected to the intake pressure sensor from a substantially intermediate point of the first pipeline.
At least a part of the second pipeline is arranged in the plurality of intake pipes in a range where the fuel pipe and the first pipeline face each other when viewed from the other side. The injectors are arranged in a range facing each other.
When the intake control device is projected onto a plane orthogonal to the third direction, the head of the idle screw is projected outside the projected range of the second pipeline .

図１Ａは、本発明の第１実施形態に係る吸気制御装置における図１ＢのＡ−Ａ線で切断した断面図であり、図１Ｂは、該吸気制御装置における図１ＡのＢ−Ｂ線で切断した断面図である。FIG. 1A is a cross-sectional view taken along the line AA of FIG. 1B in the intake air control device according to the first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the line BB of FIG. 1A in the intake air control device. It is a cross-sectional view. 図１の吸気制御装置の外観を示す斜視図である。It is a perspective view which shows the appearance of the intake air control device of FIG. 図１の吸気制御装置における吸気管と内燃機関のシリンダヘッドとの位置関係を示す模式図である。It is a schematic diagram which shows the positional relationship between the intake pipe in the intake control device of FIG. 1 and the cylinder head of an internal combustion engine.

以下、図面を用いて本発明の実施形態を説明する。第１実施形態の吸気制御装置は、内燃機関の吸気量を制御するものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The intake control device of the first embodiment controls the intake amount of the internal combustion engine.

図１に示すように、この吸気制御装置１は、内燃機関に導入される吸気が通る２つの吸気管２ａ及び２ｂと、吸気管２ａ及び２ｂ同士を連結する接続部３と、吸気管２ａ及び２ｂ並びに接続部３を一体成形などにより一体化して有するボディ４とを備える。 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.

吸気制御装置１は、内燃機関を制御するコントロールユニットや、アクセルポジションセンサなどを含んでいてもよい。吸気管２ａ、２ｂは、第１方向Ｄ１に延在し、かつ第１方向Ｄ１と交差する第２方向Ｄ２に沿ってほぼ平行に配列される。各吸気管２ａ及び２ｂには、吸気管２ａ及び２ｂにおける吸気量を調整する弁体５が設けられる。 The intake control device 1 may include a control unit that controls an internal combustion engine, an accelerator position sensor, and the like. The intake pipes 2a and 2b are arranged substantially parallel to the second direction D2 extending in the first direction D1 and intersecting the first direction D1. 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.

吸気管２ａ及び２ｂは、上流側（図１の上側）がエアクリーナに接続され、下流側（図１の下側）が内燃機関の燃焼室に接続される。弁体５としては、ここでは、バタフライ型のものが用いられる。吸気管２ａ及び２ｂの各弁体５は、共通の弁軸６を介して、ボディ４により回転自在に支持される。 The upstream side (upper side of FIG. 1) of the intake pipes 2a and 2b is connected to the air cleaner, and the downstream side (lower side of FIG. 1) 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.

接続部３は、吸気管２ａから吸気管２ｂに向かう方向に、かつ両吸気管２ａ及び２ｂが延在する方向に延在して両吸気管２ａ及び２ｂを接続する板状の接続基部７を備える。接続基部７には、補強のためのリブ８が設けられる。 The connecting portion 3 extends from the intake pipe 2a toward the intake pipe 2b and extends in the direction in which both the intake pipes 2a and 2b extend, and connects the plate-shaped connection bases 7 connecting the two intake pipes 2a and 2b. Be prepared. The connection base 7 is provided with ribs 8 for reinforcement.

ボディ４は、接続部３の内部を通り、一端が吸気管２ａの弁体５よりも上流の内壁面９に開口し、他端が吸気管２ｂの弁体５よりも下流の内壁面９に開口する直線状のバイパス通路１０ａを備える。ボディ４は、また、接続部３の内部を通り、吸気管２ｂの弁体５よりも上流の内壁面に開口し、他端が吸気管２ａの弁体５よりも下流の内壁面９に開口する直線状のバイパス通路１０ｂを備える。 The body 4 passes through the inside of the connecting portion 3, one end of which opens to the inner wall surface 9 upstream of the valve body 5 of the intake pipe 2a, and the other end of the body 4 opens to the inner wall surface 9 downstream of the valve body 5 of the intake pipe 2b. A linear bypass passage 10a that opens is provided. The body 4 also passes through the inside of the connecting portion 3 and opens to the inner wall surface upstream of the valve body 5 of the intake pipe 2b, and the other end opens to the inner wall surface 9 downstream of the valve body 5 of the intake pipe 2a. A linear bypass passage 10b is provided.

接続基部７は、バイパス通路１０ａ及び１０ｂの各周壁の周方向における一部が接続基部７の厚さ方向の一方の側及び他方の側にそれぞれ張り出した部分である張出部１１ａ及び１１ｂを備える。接続基部７には、弁軸６が内部を通過している弁軸収納部１１ｃが設けられる。 The connection base 7 includes overhangs 11a and 11b, which are portions of the peripheral walls of the bypass passages 10a and 10b in the circumferential direction that project to one side and the other side in the thickness direction of the connection base 7, respectively. .. The connection base 7 is provided with a valve shaft accommodating portion 11c through which the valve shaft 6 passes through.

弁軸収納部１１ｃの接続基部7の厚さ方向両側に、バイパス通路１０ａ及び１０ｂが存在する。したがって、接続部３の両側が、バイパス通路１０ａ及び１０ｂの周壁を構成する張出部１１ａ及び１１ｂによってバランス良く補強される。 Bypass passages 10a and 10b exist on both sides of the connection base 7 of the valve shaft accommodating portion 11c in the thickness direction. Therefore, both sides of the connecting portion 3 are reinforced in a well-balanced manner by the overhanging portions 11a and 11b forming the peripheral walls of the bypass passages 10a and 10b.

バイパス通路１０ａ及び１０ｂは、下流側に、上流側よりも径が小さい小径部１２を有する。バイパス通路１０ａ及び１０ｂの各小径部１２には、それぞれバイパス通路１０ａ及び１０ｂの流量を調整するアイドルスクリュー１３を挿入するための挿入孔１４が通じている。 The bypass passages 10a and 10b have a small diameter portion 12 on the downstream side, which is smaller in diameter than the upstream side. An insertion hole 14 for inserting an idle screw 13 for adjusting the flow rate of the bypass passages 10a and 10b is passed through each of the small diameter portions 12 of the bypass passages 10a and 10b, respectively.

これらの挿入孔１４は、接続基部７に対して垂直に設けられ、いずれの挿入孔１４も図１Ａに向かって手前側からアイドルスクリュー１３を挿入し、操作できるように設けられる。 These insertion holes 14 are provided perpendicular to the connection base 7, and any of the insertion holes 14 is provided so that the idle screw 13 can be inserted and operated from the front side toward FIG. 1A.

図１Ａでは、バイパス通路１０ａの小径部１２に突出したアイドルスクリュー１３の先端部の断面、その挿入孔１４が形成される孔形成部１５ａの断面、バイパス通路１０ｂのアイドルスクリュー１３の基端部の断面、及びその挿入孔１４が形成される孔形成部１５ｂの断面が示されている。 In FIG. 1A, the cross section of the tip of the idle screw 13 protruding into the small diameter portion 12 of the bypass passage 10a, the cross section of the hole forming portion 15a in which the insertion hole 14 is formed, and the base end of the idle screw 13 of the bypass passage 10b. The cross section and the cross section of the hole forming portion 15b in which the insertion hole 14 is formed are shown.

ボディ４における吸気管２ｂの後側（図１Ａに向かって奥の側）には、弁軸６を回転させるためのモータが収容されるモータ収容部１６が設けられる。また、ボディ４における弁軸６の一端側（図１Ａの左側）には、該モータの回転を弁軸６に伝達するギヤなどで構成される動力伝達機構や、弁体５の開度を検出するための開度センサなどを収納するための機構収納部１７が設けられる。 A motor accommodating portion 16 for accommodating a motor for rotating the valve shaft 6 is provided on the rear side of the intake pipe 2b in the body 4 (the side at the back toward FIG. 1A). Further, on one end side (left side of FIG. 1A) of the valve shaft 6 in the body 4, a power transmission mechanism including a gear for transmitting the rotation of the motor to the valve shaft 6 and an opening degree of the valve body 5 are detected. A mechanism accommodating portion 17 for accommodating an opening degree sensor or the like is provided.

図１Ｂに示すように、孔形成部１５ａは、対応するバイパス通路１０ａが、接続基部７を挟んでモータ収容部１６と反対側に位置しており、モータ収容部１６と反対側に突出して配置されている。 As shown in FIG. 1B, in the hole forming portion 15a, the corresponding bypass passage 10a is located on the side opposite to the motor accommodating portion 16 with the connection base portion 7 interposed therebetween, and is arranged so as to project to the opposite side to the motor accommodating portion 16. Has been done.

バイパス通路１０ａの形成は、ドリルを吸気管２ａのエアクリーナ側（図１の上側）の開口から挿入して、ドリルの先端を吸気管２ａの内壁に位置決めし、該ドリルにより張出部１１ａに沿って、吸気管２ｂの内壁に貫通するまで削孔することにより行われる。バイパス通路１０ｂについても、同様にそのエアクリーナ側の開口からドリルを挿入し、張出部１１ｂに沿って削孔を行うことによって形成される。 To form the bypass passage 10a, a drill is inserted through the opening on the air cleaner side (upper side of FIG. 1) of the intake pipe 2a, the tip of the drill is positioned on the inner wall of the intake pipe 2a, and the drill is used along the overhanging portion 11a. Then, the hole is drilled until it penetrates the inner wall of the intake pipe 2b. Similarly, the bypass passage 10b is formed by inserting a drill through the opening on the air cleaner side and drilling a hole along the overhanging portion 11b.

バイパス通路１０ａにおけるアイドルスクリュー１３の挿入孔１４は、これを形成するためのドリルにより、ボディ４の孔形成部１５ａの端面から削孔を行うことにより形成される。バイパス通路１０ｂにおけるアイドルスクリュー１３の挿入孔１４は、同様に、ボディ４の孔形成部１５ｂの端面から削孔して形成される。 The insertion hole 14 of the idle screw 13 in the bypass passage 10a is formed by drilling a hole from the end face of the hole forming portion 15a of the body 4 with a drill for forming the insertion hole 14. Similarly, the insertion hole 14 of the idle screw 13 in the bypass passage 10b is formed by drilling a hole from the end surface of the hole forming portion 15b of the body 4.

図２は、吸気制御装置１の外観を示す。図２に示すように、吸気制御装置１は、さらに、弁体５よりも下流の各吸気管２ａ、２ｂ内の吸気圧を測定する吸気圧センサ１８、及び吸気圧センサ１８への配線用の第１カプラ１９を備える。 FIG. 2 shows the appearance of the intake air control device 1. As shown in FIG. 2, the intake control device 1 is further used for wiring to the intake pressure sensor 18 for measuring the intake pressure in each intake pipe 2a and 2b downstream of the valve body 5, and the intake pressure sensor 18. A first coupler 19 is provided.

吸気圧センサ１８には、一端が吸気管２ａの弁体５よりも下流側の内壁に開口した管路２０、一端が吸気管２ｂの弁体５よりも下流側の内壁に開口した管路２１、並びに管路２０及び２１の各他端に接続した管路２２を経て、吸気管２ａ及び２ｂの吸気圧が導入される。管路２０と管路２１との長さ、及び内径は、ほぼ同一とされ、吸気管２ａと吸気管２ｂとからの吸入圧センサへの吸気圧の伝わりかたが同様になるよう考慮されている。 The intake pressure sensor 18 has a pipe line 20 having one end opened in the inner wall on the downstream side of the valve body 5 of the intake pipe 2a, and a pipe line 21 having one end opened in the inner wall on the downstream side of the valve body 5 of the intake pipe 2b. , And the intake pressures of the intake pipes 2a and 2b are introduced through the pipes 22 connected to the other ends of the pipes 20 and 21. The length and inner diameter of the pipe line 20 and the pipe line 21 are made to be almost the same, and it is considered that the way of transmitting the intake pressure from the intake pipe 2a and the intake pipe 2b to the intake pressure sensor is the same. There is.

第１方向Ｄ１及び第２方向Ｄ２に交差する第３方向Ｄ３において、モータ収容部１６に収容されたモータは吸気管２ａ、２ｂの配列の一方の側に配置され、吸気圧センサ１８及び第１カプラ１９は、他方の側に配置される。 In the third direction D3 intersecting the first direction D1 and the second direction D2, the motor housed in the motor accommodating portion 16 is arranged on one side of the array of the intake pipes 2a and 2b, and the intake pressure sensor 18 and the first. The coupler 19 is located on the other side.

アイドルスクリュー１３の頭部は、第１方向Ｄ１及び第２方向Ｄ２と直交又は交差する第３方向Ｄ３において、吸気管２ａ、２ｂの配列を挟んで上記モータと反対側に位置し、該反対側の方向に向いている。 The head of the idle screw 13 is located on the opposite side of the motor in the third direction D3 orthogonal to or intersecting the first direction D1 and the second direction D2 with the arrangement of the intake pipes 2a and 2b in between, and the opposite side thereof. It faces in the direction of.

吸気制御装置１は、また、各吸気管２ａ、２ｂの弁体５よりも下流にそれぞれ燃料を噴射するインジェクタ２３ａ及び２３ｂ、インジェクタ２３ａ及び２３ｂへの配線用の第２カプラ２４ａ及び２４ｂ、並びにインジェクタ２３ａ及び２３ｂへ燃料を供給する配管を接続するための配管接続部２５を備える。 The intake control device 1 also includes injectors 23a and 23b for injecting fuel downstream of the valve bodies 5 of the intake pipes 2a and 2b, second couplers 24a and 24b for wiring to the injectors 23a and 23b, and injectors. A pipe connecting portion 25 for connecting a pipe for supplying fuel to 23a and 23b is provided.

アイドルスクリュー１３の頭部は、ボディ４を第３方向Ｄ３においてモータが配置される側とは逆側から見ると、管路２０〜２２や配管接続部２５に隠れることなく露出しており、全ての部品が組みつけられた状態でも工具をアクセスさせて、アイドルスクリューの調整が可能なように配置されている。 The head of the idle screw 13 is exposed without being hidden by the pipelines 20 to 22 and the pipe connection portion 25 when the body 4 is viewed from the side opposite to the side where the motor is arranged in the third direction D3. It is arranged so that the idle screw can be adjusted by accessing the tool even when the parts are assembled.

機構収納部１７には、弁体５の閉位置（最小開度）を調整するための調整ストッパ２６が設けられる。調整ストッパ２６は、ボディ４に設けられた雌ねじに螺合し、弁軸６の端部に設けられたフランジ状の部分に先端部が当接する雄ねじを有しており、雄ねじの螺合量を調整することにより、弁体５の閉位置を規定するように構成される。 The mechanism accommodating portion 17 is provided with an adjusting stopper 26 for adjusting the closed position (minimum opening degree) of the valve body 5. The adjusting stopper 26 has a male screw that is screwed into a female screw provided on the body 4 and whose tip abuts on a flange-shaped portion provided at the end of the valve shaft 6, so that the amount of screwing of the male screw can be adjusted. By adjusting, it is configured to define the closed position of the valve body 5.

図３は、第２方向Ｄ２（図１Ａ、図１Ｂ、図２参照）に見た場合の吸気管２ａ、２ｂと内燃機関のシリンダヘッドとの位置関係を示す。図３のように、第３方向Ｄ３において、吸気管２ａ、２ｂの配列のモータ収容部１６側が、内燃機関のシリンダヘッド２７側に配置されて、シリンダヘッド２７に固定されている。すなわち、吸気制御装置１は、モータ側に内燃機関のシリンダヘッド２７が位置するように内燃機関に取り付けられる。 FIG. 3 shows the positional relationship between the intake pipes 2a and 2b and the cylinder head of the internal combustion engine when viewed in the second direction D2 (see FIGS. 1A, 1B, and 2). As shown in FIG. 3, in the third direction D3, the motor accommodating portion 16 side of the arrangement of the intake pipes 2a and 2b is arranged on the cylinder head 27 side of the internal combustion engine and fixed to the cylinder head 27. That is, the intake control device 1 is attached to the internal combustion engine so that the cylinder head 27 of the internal combustion engine is located on the motor side.

この構成において、吸気管２ａ及び２ｂにおけるアイドル吸気量の調整及び同調を行う場合には、吸気管２ａ及び２ｂに通じる管路の開口部を塞ぐ必要がある。 In this configuration, when adjusting and synchronizing the idle intake amount in the intake pipes 2a and 2b, it is necessary to close the opening of the pipe line leading to the intake pipes 2a and 2b.

この点、本実施形態では、吸気圧センサ１８を管路２０〜２２とともにボディ４に取り付けた状態で上記のアイドル吸気量の調整及び同調が行われる。このため、管路２０及び２１が吸気管２ａ及び２ｂに接続する部分の開口部を調整前に塞ぎ、また調整後に該開口部を開放する手間が省かれる。 In this respect, in the present embodiment, the above-mentioned idle intake amount is adjusted and tuned in a state where the intake pressure sensor 18 is attached to the body 4 together with the pipelines 20 to 22. Therefore, it is possible to save the trouble of closing the opening of the portion where the pipelines 20 and 21 connect to the intake pipes 2a and 2b before the adjustment and opening the opening after the adjustment.

アイドル吸気量の調整及び同調に際しては、例えば、調整ストッパ２６により、弁体５が完全な閉状態ではなくわずかに開いた状態となる状態を弁体５の閉位置に設定される。この状態で、吸気制御装置１を、アイドル吸気量の測定装置に載置し、吸気管２ａ及び２ｂの弁体５よりも下流に負圧を発生させる。 When adjusting and synchronizing the idle intake amount, for example, the adjustment stopper 26 sets the closed position of the valve body 5 so that the valve body 5 is not in a completely closed state but in a slightly open state. In this state, the intake control device 1 is placed on the idle intake amount measuring device to generate a negative pressure downstream of the valve body 5 of the intake pipes 2a and 2b.

次に、吸気管２ａ及び２ｂを流れる空気の流量がある程度確保される最小の開度となるまで、調整ストッパ２６により弁体５を全閉方向に微小回転させ、ロックナットで調整ストッパ２６を固定する。この状態で、各アイドルスクリュー１３を操作して、吸気管２ａ及び２ｂの下流側から供給されるアイドル吸気量の調整及び同調を行う。 Next, the valve body 5 is slightly rotated in the fully closed direction by the adjusting stopper 26 until the opening degree at which the flow rate of the air flowing through the intake pipes 2a and 2b is secured to some extent is reached, and the adjusting stopper 26 is fixed by the lock nut. do. In this state, each idle screw 13 is operated to adjust and synchronize the idle intake amount supplied from the downstream side of the intake pipes 2a and 2b.

本実施形態によれば、第３方向Ｄ３において、モータは、吸気管２ａ及び２ｂの配列を挟んでその一方の側に配置され、吸気圧センサ１８及び第１カプラ１９は、他方の側に配置される。したがって、吸気圧センサ１８及び第１カプラ１９を、モータ収容部１６の存在により制限されること無く、第３方向Ｄ３における上記他方の側に、高い自由度で配置することができる。 According to the present embodiment, in the third direction D3, the motor is arranged on one side of the intake pipes 2a and 2b, and the intake pressure sensor 18 and the first coupler 19 are arranged on the other side. Will be done. Therefore, the intake pressure sensor 18 and the first coupler 19 can be arranged with a high degree of freedom on the other side in the third direction D3 without being limited by the presence of the motor accommodating portion 16.

また、アイドルスクリュー１３の頭部は、第３方向Ｄ３において、吸気管２ａ及び２ｂの配列のモータと反対側に位置し、かつ該反対側の方向に向いている。そして、吸気制御装置１は、モータ側に内燃機関のシリンダヘッド２７が位置するように内燃機関に取り付けられる。 Further, the head of the idle screw 13 is located on the opposite side of the motor in the arrangement of the intake pipes 2a and 2b in the third direction D3, and faces the opposite side. Then, the intake control device 1 is attached to the internal combustion engine so that the cylinder head 27 of the internal combustion engine is located on the motor side.

したがって、アイドルスクリュー１３を、シリンダヘッド２７の存在により制限されることなく、第３方向Ｄ３における吸気管２ａ及び２ｂの配列のモータと反対側に、高い自由度で配置することができる。 Therefore, the idle screw 13 can be arranged with a high degree of freedom on the side opposite to the motor in the arrangement of the intake pipes 2a and 2b in the third direction D3 without being limited by the presence of the cylinder head 27.

また、インジェクタ２３ａ及び２３ｂ、第２カプラ２４ａ及び２４ｂ、並びに配管接続部２５は、第３方向Ｄ３において、吸気管２ａ及び２ｂの配列のモータと反対側に位置している。そして、吸気制御装置１は、モータ側に内燃機関のシリンダヘッド２７が位置するように内燃機関に取り付けられる。 Further, the injectors 23a and 23b, the second couplers 24a and 24b, and the pipe connection portion 25 are located on the opposite side of the motor in the arrangement of the intake pipes 2a and 2b in the third direction D3. Then, the intake control device 1 is attached to the internal combustion engine so that the cylinder head 27 of the internal combustion engine is located on the motor side.

したがって、インジェクタ２３ａ及び２３ｂ及び第２カプラ２４ａ及び２４ｂ、並びに配管接続部２５を、シリンダヘッド２７の存在により制限されることなく、第３方向Ｄ３におけるモータと反対側に、高い自由度で配置することができる。また、吸気制御装置１全体の重量バランスが、吸気管２ａ及び２ｂの配列の第３方向Ｄ３における両側にほぼ均等になるので、吸気制御装置１の振動に対する耐性を向上させることができる。 Therefore, the injectors 23a and 23b, the second couplers 24a and 24b, and the pipe connection 25 are arranged with a high degree of freedom on the opposite side of the motor in the third direction D3 without being restricted by the presence of the cylinder head 27. be able to. Further, since the weight balance of the entire intake control device 1 is substantially equal on both sides of the arrangement of the intake pipes 2a and 2b in the third direction D3, the resistance of the intake control device 1 to vibration can be improved.

また、第３方向Ｄ３における吸気管２ａ及び２ｂの配列のモータ側が内燃機関のシリンダヘッド２７側に配置されて、シリンダヘッド２７に固定されている。したがって、吸気制御装置１を、モータ側に内燃機関のシリンダヘッド２７が位置するように内燃機関に取り付けられているので、モータ及びシリンダヘッド２７の存在によって制限されること無く、吸気圧センサ１８及び第１カプラ１９を、第３方向Ｄ３におけるモータと反対側に、高い自由度で配置することができる。 Further, the motor side of the arrangement of the intake pipes 2a and 2b in the third direction D3 is arranged on the cylinder head 27 side of the internal combustion engine and fixed to the cylinder head 27. Therefore, since the intake control device 1 is attached to the internal combustion engine so that the cylinder head 27 of the internal combustion engine is located on the motor side, the intake pressure sensor 18 and the intake pressure sensor 18 and the cylinder head 27 are not limited by the presence of the motor and the cylinder head 27. The first coupler 19 can be arranged with a high degree of freedom on the side opposite to the motor in the third direction D3.

以上、本発明の実施形態について説明したが、本発明はこれに限定されない。例えば、吸気管２ａ及び２ｂの間に直線状のバイパス通路１０ａ及び１０ｂを設けているが、バイパス通路１０ａ及び１０ｂのうちの一方のみを設けてもよい。この場合、アイドリングスクリューに加えて、吸気管２ａ及び２ｂの弁体５の開度に差を設けたり、アイドル時の弁体５の開度をモータによって微調整したりすることにより、吸気管２ａ及び２ｂから供給されるアイドル時の吸気量を調整することができる。 Although the embodiments of the present invention have been described above, the present invention is not limited thereto. For example, although linear bypass passages 10a and 10b are provided between the intake pipes 2a and 2b, only one of the bypass passages 10a and 10b may be provided. In this case, in addition to the idling screw, the intake pipe 2a is provided by providing a difference in the opening degree of the valve body 5 of the intake pipes 2a and 2b, or by finely adjusting the opening degree of the valve body 5 at idle by a motor. And the idle intake amount supplied from 2b can be adjusted.

１…吸気制御装置、２ａ、２ｂ…吸気通路、３…接続部、４…ボディ、５…弁体、６…弁軸、７…接続基部、８…リブ、９…内壁面、１０ａ、１０ｂ…バイパス通路、１１ａ、１１ｂ…張出部、１１ｃ…弁軸収納部、１２…小径部、１３…アイドルスクリュー、１４…挿入孔、１５ａ、１５ｂ…孔形成部、１６…モータ収納部、１７…機構収納部、１８…吸気圧センサ、１９…第１カプラ、２０〜２２…管路、２３ａ、２３ｂ…インジェクタ、２４ａ、２４ｂ…第２カプラ、２５…配管接続部、２６…調整ストッパ、２７…シリンダヘッド。 1 ... Intake control device, 2a, 2b ... Intake passage, 3 ... Connection part, 4 ... Body, 5 ... Valve body, 6 ... Valve shaft, 7 ... Connection base, 8 ... Rib, 9 ... Inner wall surface, 10a, 10b ... Bypass passage, 11a, 11b ... Overhanging part, 11c ... Valve shaft storage part, 12 ... Small diameter part, 13 ... Idle screw, 14 ... Insert hole, 15a, 15b ... Hole forming part, 16 ... Motor storage part, 17 ... Mechanism Storage unit, 18 ... Intake pressure sensor, 19 ... 1st coupler, 20-22 ... Pipe line, 23a, 23b ... Injector, 24a, 24b ... Second coupler, 25 ... Piping connection, 26 ... Adjustment stopper, 27 ... Cylinder head.

Claims

An intake control device that controls the intake amount of an internal combustion engine.
A plurality of intake pipes extending in the first direction and arranged along the second direction intersecting the first direction and through which the 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,
The valve shaft common to the valve body of each intake pipe,
A motor that controls the opening / closing drive of the valve body of each intake pipe via the valve shaft,
A power transmission mechanism that transmits the driving force of the motor to the valve shaft,
An intake pressure sensor that measures the intake pressure in each intake pipe downstream of the valve body, and a first coupler for wiring to the intake pressure sensor.
A bypass passage connecting the upstream side and the downstream side of the valve body of each of the intake pipes,
An idle screw that adjusts the flow rate of the bypass passage and
An injector that injects fuel downstream of the valve body of each of the intake pipes,
A second coupler for wiring to the injector,
It is provided with a fuel pipe for connecting the injectors and supplying fuel to the injectors.
In the first direction and the third direction intersecting the second direction, the motor is arranged on one side of the array of intake pipes, and the intake pressure sensor and the first coupler are arranged on the other side. Has been
The head of the idle screw is located on the other side of the array of intake pipes and faces the other side in the third direction.
The injector, the second coupler, and the fuel pipe are located on the other side of the intake pipe array in the third direction.
Each of the intake pipes has an opening on the downstream side of the valve body.
The openings are connected to each other by a first pipeline.
The first pipeline is connected to the intake pressure sensor by a second pipeline.
When viewed from the other side, the head of the idle screw is in a range where the fuel pipe and the first pipeline face each other, and the injectors arranged in the plurality of intake pipes are connected to each other. Are placed in the opposite range,
When the intake control device is projected onto a plane orthogonal to the third direction, the head of the idle screw is projected outside the range in which the injector, the fuel pipe, and the first pipeline are projected. An intake control device characterized by being

In the intake control device according to claim 1,
When viewed from the other side, the intake pressure sensor has the range in which the fuel pipe and the first pipeline face each other, and the injectors arranged in the plurality of intake pipes face each other. It is located outside the range of
The second pipeline is connected to the intake pressure sensor from a substantially intermediate point of the first pipeline.
At least a part of the second pipeline is arranged in the plurality of intake pipes in a range where the fuel pipe and the first pipeline face each other when viewed from the other side. The injectors are arranged in a range facing each other.
When the intake control device is projected onto a plane orthogonal to the third direction, the head of the idle screw is projected outside the projected range of the second pipeline. Control device.