JP2006307648A - Electric supercharger - Google Patents

Electric supercharger Download PDF

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JP2006307648A
JP2006307648A JP2005127319A JP2005127319A JP2006307648A JP 2006307648 A JP2006307648 A JP 2006307648A JP 2005127319 A JP2005127319 A JP 2005127319A JP 2005127319 A JP2005127319 A JP 2005127319A JP 2006307648 A JP2006307648 A JP 2006307648A
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chamber
supercharger
electric motor
electric
air
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Kazuhiro Kojima
一洋 小島
Hideo Nakai
英夫 中井
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric supercharger capable of providing desired acceleration performance, and capable of restraining even generation of noise, without easily restraining operation. <P>SOLUTION: This electric supercharger has a supercharger 13 driven by an electric motor 11, compressing intake air and performing supercharging to an engine, a case 16 for storing the electric motor 11 and the supercharger 13 and composed of a material having electromagnetic shield performance, a separation wall 20 for separating the case 16 into a first chamber 17 and a second chamber 19 and arranging the electric motor 11 on the first chamber 17 side and the supercharger 13 on the second chamber 19 side, an intake port 18 arranged on the first chamber 17 side and sucking air from an external part in the first chamber 17, and an air vent 21 arranged in the separation wall 20 and communicating the first chamber 17 with the second chamber 19; and supplies the outside air sucked in the first chamber 17 by the intake port 18 to the supercharger 13 of the second chamber 19 via the air vent 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、電動モータを用いて、エンジンへの過給を行う電動過給装置に関する。   The present invention relates to an electric supercharger that supercharges an engine using an electric motor.

エンジン等の内燃機関において、トルク及びピーク出力を増大させるため、エンジン内への空気質量流量を増大させる過給装置が用いられている。過給装置の中には、低いエンジン回転数においても、所望のトルク等を得るべく、所望の過給圧が得られるように、電気モータにて過給装置を駆動させる電動式の過給装置がある。   In an internal combustion engine such as an engine, a supercharging device that increases an air mass flow rate into the engine is used to increase torque and peak output. Among the supercharging devices, an electric supercharging device that drives the supercharging device with an electric motor so as to obtain a desired supercharging pressure in order to obtain a desired torque or the like even at a low engine speed. There is.

特開２００３−１６１１５６号公報JP 2003-161156 A 特開２００３−１６１１５７号公報JP 2003-161157 A

電動式過給装置では、モータの駆動により過給器を作動させているが、その駆動に伴い、モータの温度が上昇する。そこで、温度上昇によるモータの軸受や巻線等の焼き付き損傷を防止するため、モータ温度に応じて、その作動の制限をしており、モータ損傷が生じる前の所定温度以上になると、その作動を停止するようにしている。   In the electric supercharger, the supercharger is operated by driving the motor, but the temperature of the motor rises with the drive. Therefore, in order to prevent the seizure damage of the motor bearings and windings due to the temperature rise, the operation is restricted according to the motor temperature. I try to stop.

図３に、モータの作動制限を説明するグラフを示す。
図３に示すように、モータ温度が第１所定値Ｔ1以下であれば、モータの作動率を１００％として、モータの作動制限は全くないが、第１所定値Ｔ1を超えると、モータ温度に応じて、モータの作動率を低減させて、モータ温度の上昇を抑制するようにしている。そして、モータ温度が、第１所定値Ｔ1より大きい第２所定値Ｔ2を超えると、モータの作動率を０％として、モータの作動を完全に停止し、過給を行わないようにしている。 FIG. 3 shows a graph for explaining the motor operation limitation.
As shown in FIG. 3, if the motor temperature is a first predetermined value T 1 less, the operation rate of the motor as 100%, operating limits of the motor is not at all, if the first exceeds the predetermined value T 1, the motor The operating rate of the motor is reduced according to the temperature to suppress the increase in the motor temperature. When the motor temperature exceeds a second predetermined value T 2 that is greater than the first predetermined value T 1 , the motor operating rate is set to 0%, and the motor operation is completely stopped so that supercharging is not performed. Yes.

このような作動制限は、運転者が加速したいときに、運転者の意志に反して、電動式過給装置の作動が止まることになり、運転者の意志通りの加速（トルク）を得ることができず、ドライバビリティーの悪化を招いている。又、電動式過給装置では、モータの作動により、電磁波が発生するため、ラジオに雑音が発生するおそれもある。   Such an operation limitation is that when the driver wants to accelerate, the operation of the electric supercharger stops against the driver's will, and the acceleration (torque) according to the driver's intention can be obtained. It is impossible to do so, and drivability deteriorates. Further, in the electric supercharger, electromagnetic waves are generated by the operation of the motor, and there is a possibility that noise is generated in the radio.

本発明は上記課題に鑑みなされたもので、容易に作動制限されることが無く、所望の加速性能を得ることができると共に雑音の発生も抑制することができる電動過給装置を提供することを目的とする。   The present invention has been made in view of the above problems, and provides an electric supercharging device that is not easily limited in operation, can obtain a desired acceleration performance, and can suppress generation of noise. Objective.

上記課題を解決する第１の発明に係る電動過給装置は、
電動モータと、
前記電動モータにより駆動され、取り込んだ空気を圧縮して、内燃機関に対して過給を行う過給器と、
前記電動モータ及び前記過給器を収納するケースと、
前記ケースを第１室と第２室とに分離すると共に、前記電動モータが第１室側へ、前記過給器が第２室側へ配置される分離壁と、
前記第１室側の前記ケースに設けられ、外部の空気を前記第１室に吸入する吸気口と、
前記分離壁に設けられ、前記第１室と前記第２室とを連通する通気口とを備え、
前記吸気口により第１室に吸入された外部の空気は、前記通気口を経由して、前記第２室の前記過給器に供給されることを特徴とする。
つまり、外部から吸入した空気を、一旦、電動モータが配置された第１室に導入した後、過給器が配置された第２室に導入して、過給器に供給するようにすることで、電動モータを外部からの空気で冷却することができると共にケース内に空気流が発生するので、冷却効果も向上する。 An electric supercharging device according to a first invention for solving the above-mentioned problem is as follows.
An electric motor;
A supercharger that is driven by the electric motor and compresses the taken-in air to supercharge the internal combustion engine;
A case for housing the electric motor and the supercharger;
A separation wall in which the case is separated into a first chamber and a second chamber, the electric motor is disposed on the first chamber side, and the supercharger is disposed on the second chamber side;
An intake port provided in the case on the first chamber side, for sucking outside air into the first chamber;
A vent provided in the separation wall and communicating the first chamber and the second chamber;
The outside air sucked into the first chamber by the intake port is supplied to the supercharger of the second chamber through the vent port.
That is, the air sucked from the outside is once introduced into the first chamber in which the electric motor is arranged, and then introduced into the second chamber in which the supercharger is arranged and supplied to the supercharger. Thus, the electric motor can be cooled with air from the outside and an air flow is generated in the case, so that the cooling effect is also improved.

上記課題を解決する第２の発明に係る電動過給装置は、
上記第１の発明に係る電動過給装置において、
前記通気口は、前記吸気口から離れた位置に配置されることを特徴とする。
つまり、吸気口から通気口までの位置を、できるだけ遠く離れた位置とすることで、第１室に配置された電動モータの略全ての周囲が、吸入された空気の経路に面することになり、冷却効率の向上を図ることができる。 An electric supercharging device according to a second invention for solving the above-described problems is as follows.
In the electric supercharger according to the first invention,
The vent is disposed at a position away from the intake port.
In other words, by setting the position from the air inlet to the air vent as far as possible, almost the entire periphery of the electric motor arranged in the first chamber faces the path of the inhaled air. The cooling efficiency can be improved.

上記課題を解決する第３の発明に係る電動過給装置は、
上記第１又は第２の発明に係る電動過給装置において、
少なくとも前記第１室は、電磁シールド性を有する材料から構成されることを特徴とする。
なお、電磁シールド性を有する材料としては、例えば、鉄、銅、アルミニウム等の金属材料、耐熱性プラスチック等の樹脂に金属をコーティングした材料等を用いる。そして、これらの材料により第１室を構成し、電動モータの周囲を閉鎖するようにして、電動モータからの電磁波を外部に放射しないようにする。 An electric supercharging device according to a third invention for solving the above-described problem is
In the electric supercharging device according to the first or second invention,
At least the first chamber is made of a material having electromagnetic shielding properties.
In addition, as a material having electromagnetic shielding properties, for example, a metal material such as iron, copper, or aluminum, a material obtained by coating a metal on a resin such as a heat-resistant plastic, or the like is used. The first chamber is made of these materials, and the periphery of the electric motor is closed so as not to radiate electromagnetic waves from the electric motor to the outside.

第１の発明によれば、ケース内に外部の空気を導入して空気流を作り、外部の空気を電動モータに当てることにより、比較的容易な構造で電動モータを冷却することができる。その結果、容易に作動制限されることが無くなり、所望の十分な加速を得ることができる。
又、電動過給装置がケースに覆われているので、浸水、飛び石等による損傷からも防護することができる。 According to the first invention, it is possible to cool the electric motor with a relatively easy structure by introducing external air into the case to create an air flow and applying the external air to the electric motor. As a result, the operation is not easily restricted, and a desired and sufficient acceleration can be obtained.
Further, since the electric supercharging device is covered with the case, it can be protected from damage caused by water immersion, stepping stones, and the like.

第２の発明によれば、電動モータの周囲を流れる空気流が、できるだけ長く接することとなり、電動モータを効率的に冷却することができる。   According to the second invention, the airflow flowing around the electric motor is in contact as long as possible, and the electric motor can be efficiently cooled.

第３の発明によれば、少なくとも電動モータ部分を、電磁シールド性を有する材料で閉鎖するので、電動モータが発生する電磁波の外部への放射を防止することができる。   According to the third aspect of the invention, at least the electric motor portion is closed with the material having electromagnetic shielding properties, so that radiation of electromagnetic waves generated by the electric motor can be prevented.

以下、図１〜図２を用いて、本発明に係る電動過給装置の実施形態を詳細に説明する。   Hereinafter, an embodiment of an electric supercharger according to the present invention will be described in detail with reference to FIGS.

図１、図２は、本発明に係る電動過給装置の実施形態の一例を示す図であり、図１は、周囲と関係を示す系統図であり、図２は、本発明に係る電動過給装置を示す斜視図である。   1 and 2 are diagrams showing an example of an embodiment of an electric supercharger according to the present invention, FIG. 1 is a system diagram showing the relationship with the surroundings, and FIG. 2 is an electric supercharger according to the present invention. It is a perspective view which shows a feeder.

図１に示すように、本発明に係る電動過給装置１の上流側には、吸入した空気を濾過するフィルタ２を備えたエアクリーナ３が配置されており、濾過され、清浄化された空気は、吸気管４を通過して、電動過給装置１のケース１６内へ導入される。そして、ケース１６内に導入された空気は、過給器１３へ供給され、過給器１３により圧縮された後、過給管５を経由し、空気質量流量をスロットルバルブ６により調整されて、下流側に配置されたエンジン７（内燃機関）内へ過給される。   As shown in FIG. 1, an air cleaner 3 having a filter 2 for filtering inhaled air is disposed upstream of the electric supercharger 1 according to the present invention. Then, it passes through the intake pipe 4 and is introduced into the case 16 of the electric supercharger 1. The air introduced into the case 16 is supplied to the supercharger 13 and compressed by the supercharger 13, and then the air mass flow rate is adjusted by the throttle valve 6 via the supercharger pipe 5. The engine 7 (internal combustion engine) disposed on the downstream side is supercharged.

本発明に係る電動過給装置１は、図１、図２に示すように、冷却用のフィン１２を有し、過給器１３のホイール１４を駆動する電動モータ１１と、吸入口１５から吸入した空気をホイール１４により圧縮し、エンジン７に対して過給を行う過給器１３と、これらの電動モータ１１及び過給器１３の周囲を囲うように収納するケース１６とを有する。   As shown in FIGS. 1 and 2, the electric supercharger 1 according to the present invention has cooling fins 12, an electric motor 11 that drives the wheel 14 of the supercharger 13, and suction from an inlet 15. The supercharger 13 that compresses the compressed air by the wheel 14 and supercharges the engine 7, and the case 16 that stores the electric motor 11 and the supercharger 13 so as to surround them.

ケース１６は、分離壁２０により、第１室１７と第２室１９に分離されており、分離壁２０に電動モータ１１及び過給器１３を固定することにより、第１室１７側に電動モータ１１が、第２室側１９に過給器１３が配置されるようにしている。   The case 16 is separated into a first chamber 17 and a second chamber 19 by a separation wall 20. By fixing the electric motor 11 and the supercharger 13 to the separation wall 20, the electric motor is provided on the first chamber 17 side. 11, the supercharger 13 is arranged on the second chamber side 19.

第１室１７側には、吸気管４に接続された吸気口１８が設けられており、エアクリーナ３において濾過された空気は、吸気管４、吸気口１８を経由して、第１室１７へ供給される。又、分離壁２０には、第１室１７と第２室１９とを連通する通気口２１が設けられており、第１室１７へ吸入された空気は、通気口２１を経由して、第２室１９側へ供給される。そして、第２室１９へ供給された空気は、吸入口１５から過給器１３内へ取り込まれ、過給器１３内で圧縮されて、過給管５へ吐出される。   An intake port 18 connected to the intake pipe 4 is provided on the first chamber 17 side, and the air filtered in the air cleaner 3 passes through the intake pipe 4 and the intake port 18 to the first chamber 17. Supplied. Further, the separation wall 20 is provided with a vent 21 that allows the first chamber 17 and the second chamber 19 to communicate with each other, and the air sucked into the first chamber 17 passes through the vent 21 and passes through the vent 21. It is supplied to the second chamber 19 side. The air supplied to the second chamber 19 is taken into the supercharger 13 from the suction port 15, compressed in the supercharger 13, and discharged to the supercharger pipe 5.

なお、電動モータ１１へのハーネスは、後述する空気の供給経路に影響を与えない場所から、ケース１６の外部へ導出されており、このハーネスを用いて、バッテリ２３から電源が供給されると共に、電動モータ１１の作動がＥＣＵ２２により制御されて、図３に示したような作動制限が行われる。   The harness to the electric motor 11 is led out of the case 16 from a place that does not affect the air supply path, which will be described later, and power is supplied from the battery 23 using this harness. The operation of the electric motor 11 is controlled by the ECU 22, and the operation restriction as shown in FIG. 3 is performed.

上記構成により、エアクリーナ３から供給される空気は、最初に、第１室１７に供給される。このとき、吸気口１８から供給される吸気が、電動モータ１１に直接当たるように、吸気口１８の流入方向を設定する。第１室１７に供給された空気は、電動モータ１１の周囲を、電動モータ１１を冷却しながら通過し、通気口２１を通って、上方の第２室１９へ供給され、その後、過給器１３にて吸入されることになる。そして、過給器１３に吸入された空気は、所望の圧力へ圧縮されて、エンジン７側へ過給される。   With the above configuration, the air supplied from the air cleaner 3 is first supplied to the first chamber 17. At this time, the inflow direction of the intake port 18 is set so that the intake air supplied from the intake port 18 directly hits the electric motor 11. The air supplied to the first chamber 17 passes around the electric motor 11 while cooling the electric motor 11, passes through the vent hole 21, and is supplied to the upper second chamber 19, and then the supercharger. 13 will be inhaled. The air sucked into the supercharger 13 is compressed to a desired pressure and is supercharged to the engine 7 side.

つまり、過給器１３に吸入される空気を、一旦、ケース１６の第１室１７側に導入して、電動モータ１１の周囲を通過させた後、ケース１６の第２室１９側に導入して、過給器１３の吸入口１５に導入するようにしており、このような経路を、空気の供給経路とすることにより、電動モータ１１が効率的に冷却されて、容易に第１所定温度Ｔ1まで上昇することが無くなる（図３参照）。その結果、電動モータ１１の作動制限が少なくなり、運転者の意志通りに、車両の加速を行うことができる。 That is, the air sucked into the supercharger 13 is once introduced into the first chamber 17 side of the case 16 and passed around the electric motor 11 and then introduced into the second chamber 19 side of the case 16. Thus, by introducing such a path as an air supply path, the electric motor 11 is efficiently cooled, and the first predetermined temperature can be easily obtained. It will not rise to T 1 (see FIG. 3). As a result, the operation limit of the electric motor 11 is reduced, and the vehicle can be accelerated as the driver desires.

なお、より効率的な冷却が可能な空気の供給経路とするには、分離壁２０に設ける通気口２１を、第１室１７の吸気口１８から、できるだけ遠く離れた位置に配置すること、つまり、空気の供給経路を長くすることが望ましい。このような配置とすることで、電動モータ１１に対して、その周囲と接触する空気の供給経路がより長くなり、より効率的に冷却を行うことができる。   In order to provide an air supply path capable of more efficient cooling, the ventilation port 21 provided in the separation wall 20 should be arranged as far as possible from the intake port 18 of the first chamber 17, that is, It is desirable to lengthen the air supply path. By setting it as such arrangement | positioning, the supply path | route of the air which contacts the circumference | surroundings with respect to the electric motor 11 becomes longer, and it can cool more efficiently.

又、本発明においては、過給器１３を電動モータ１１にて駆動させているが、電動モータ１１が発生する電磁波を低減させるため、ケース１６全体、若しくは、少なくとも、電動モータ１１の周囲を囲う第１室１７の壁面を、電磁シールド性を有する材料から構成することが望ましい。電磁シールド性のある材料としては、鉄、銅、アルミニウム等の金属材料に加えて、耐熱性プラスチック等の樹脂に金属コーティングを行ったものでもよい。なお、電磁シールド性を考慮すると、ケース１６は、電動モータ１１、過給器１３等を密閉するような構造がよく、そのような構造により、電磁シールド性だけではなく、車体下方からの浸水、石等の飛来から、電動モータ１１、過給器１３等を防護することが可能となる。   In the present invention, the supercharger 13 is driven by the electric motor 11, but the entire case 16 or at least the periphery of the electric motor 11 is enclosed in order to reduce electromagnetic waves generated by the electric motor 11. It is desirable that the wall surface of the first chamber 17 be made of a material having electromagnetic shielding properties. As a material having electromagnetic shielding properties, in addition to a metal material such as iron, copper, and aluminum, a material such as a heat resistant plastic or the like coated with a metal may be used. In consideration of electromagnetic shielding properties, the case 16 has a structure that seals the electric motor 11, the supercharger 13, and the like. With such a structure, not only electromagnetic shielding properties but also water immersion from below the vehicle body, It is possible to protect the electric motor 11, the supercharger 13, and the like from flying stones and the like.

本発明は、電動式の過給器に適用するものであるが、排気圧を利用して過給器を駆動するタービン式の過給器にも適用可能であり、例えば、外気をタービン側の周囲に吸入して、タービン側を冷却した後、過給器内に外気を取り込むようにしてもよい。   The present invention is applied to an electric supercharger. However, the present invention can also be applied to a turbine supercharger that drives a supercharger using exhaust pressure. You may make it take in outside and take in outside air in a supercharger, after cooling the turbine side.

本発明に係る電動過給装置の実施形態の一例を示す図であり、その周囲と関係を示す系統図である。It is a figure which shows an example of embodiment of the electric supercharging apparatus which concerns on this invention, and is a systematic diagram which shows the circumference | surroundings and a relationship. 本発明に係る電動過給装置の実施形態の一例を示す斜視図である。It is a perspective view showing an example of an embodiment of an electric supercharger concerning the present invention. モータの作動制限を説明するグラフである。It is a graph explaining the action | operation limitation of a motor.

符号の説明Explanation of symbols

１ 電動過給装置
３ エアクリーナ
７ エンジン
１１ 電動モータ
１３ 過給器
１６ ケース
２０ 分離壁
２１ 通気口 DESCRIPTION OF SYMBOLS 1 Electric supercharger 3 Air cleaner 7 Engine 11 Electric motor 13 Supercharger 16 Case 20 Separation wall 21 Vent

Claims (3)

電動モータと、
前記電動モータにより駆動され、取り込んだ空気を圧縮して、内燃機関に対して過給を行う過給器と、
前記電動モータ及び前記過給器を収納するケースと、
前記ケースを第１室と第２室とに分離すると共に、前記電動モータが第１室側へ、前記過給器が第２室側へ配置される分離壁と、
前記第１室側の前記ケースに設けられ、外部の空気を前記第１室に吸入する吸気口と、
前記分離壁に設けられ、前記第１室と前記第２室とを連通する通気口とを備え、
前記吸気口により第１室に吸入された外部の空気は、前記通気口を経由して、前記第２室の前記過給器に供給されることを特徴とする電動過給装置。 An electric motor;
A supercharger that is driven by the electric motor and compresses the taken-in air to supercharge the internal combustion engine;
A case for housing the electric motor and the supercharger;
A separation wall in which the case is separated into a first chamber and a second chamber, the electric motor is disposed on the first chamber side, and the supercharger is disposed on the second chamber side;
An intake port provided in the case on the first chamber side, for sucking outside air into the first chamber;
A vent provided in the separation wall and communicating the first chamber and the second chamber;
The electric supercharging device according to claim 1, wherein the external air sucked into the first chamber by the intake port is supplied to the supercharger of the second chamber via the vent port. 請求項１記載の電動過給装置において、
前記通気口は、前記吸気口から離れた位置に配置されることを特徴とする電動過給装置。 The electric supercharging device according to claim 1,
The electric supercharger is characterized in that the air vent is disposed at a position away from the air intake. 請求項１又は請求項２記載の電動過給装置において、
少なくとも前記第１室は、電磁シールド性を有する材料から構成されることを特徴とする電動過給装置。 In the electric supercharging device according to claim 1 or 2,
At least the first chamber is made of a material having electromagnetic shielding properties.
JP2005127319A 2005-04-26 2005-04-26 Electric supercharger Pending JP2006307648A (en)

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JP2008215075A (en) * 2007-02-28 2008-09-18 Mitsubishi Heavy Ind Ltd Cooling method and device for electric supercharger
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US9534532B2 (en) 2011-09-30 2017-01-03 Eaton Corporation Supercharger assembly with two rotor sets
US9534531B2 (en) 2011-09-30 2017-01-03 Eaton Corporation Supercharger assembly for regeneration of throttling losses and method of control
US9856781B2 (en) 2011-09-30 2018-01-02 Eaton Corporation Supercharger assembly with independent superchargers and motor/generator
JP2013148062A (en) * 2012-01-23 2013-08-01 Mitsubishi Electric Corp Supercharging system for internal combustion engine
US9751411B2 (en) 2012-03-29 2017-09-05 Eaton Corporation Variable speed hybrid electric supercharger assembly and method of control of vehicle having same
US10125698B2 (en) 2013-03-12 2018-11-13 Eaton Intelligent Power Limited Adaptive state of charge regulation and control of variable speed hybrid electric supercharger assembly for efficient vehicle operation
US10934951B2 (en) 2013-03-12 2021-03-02 Eaton Intelligent Power Limited Adaptive state of charge regulation and control of variable speed hybrid electric supercharger assembly for efficient vehicle operation
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