JP4737118B2 - Output control device for internal combustion engine - Google Patents

Output control device for internal combustion engine Download PDF

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JP4737118B2
JP4737118B2 JP2007052592A JP2007052592A JP4737118B2 JP 4737118 B2 JP4737118 B2 JP 4737118B2 JP 2007052592 A JP2007052592 A JP 2007052592A JP 2007052592 A JP2007052592 A JP 2007052592A JP 4737118 B2 JP4737118 B2 JP 4737118B2
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displacement
target
pressure
throttle valve
boost pressure
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JP2008215159A (en
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寛之 田中
英夫 中井
誠二 石田
一也 大橋
隆 村上
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Mitsubishi Motors Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Supercharger (AREA)

Description

本発明は、電動の過給機を備えた内燃機関の出力制御装置に関する。   The present invention relates to an output control device for an internal combustion engine including an electric supercharger.

内燃機関であるエンジンには、その出力を向上させるために、電動駆動源によって駆動される過給機を備えたものがある。このような過給機を備えたエンジンにおいては、機関への吸入空気量を調整するスロットル弁の上流側に位置する吸気通路に過給機が配置されていると共に、過給機を迂回するようにバイパス経路が形成され、このパイパス経路を開閉するリードバルブが設けられている。リードバルブは、薄い弾性板で構成されていて、非過給時においてはインテークマニホールドの負圧による吸気の流れによりバイパス通路を開き、過給時には過給機の下流側の圧力上昇によりバイパス通路を閉じるように構成されている。このようなバイパス経路にリードバルブを設けた例としては、例えば特許文献１が挙げられる。   Some engines that are internal combustion engines include a supercharger that is driven by an electric drive source in order to improve its output. In an engine equipped with such a supercharger, the supercharger is arranged in the intake passage located upstream of the throttle valve that adjusts the intake air amount to the engine, and bypasses the supercharger. A bypass path is formed in the pipe, and a reed valve for opening and closing the bypass path is provided. The reed valve is composed of a thin elastic plate, and when it is not supercharged, it opens the bypass passage by the flow of intake air due to the negative pressure of the intake manifold. Configured to close. An example in which a reed valve is provided in such a bypass path is, for example, Patent Document 1.

特開２００５−１８８４８３JP 2005-184843

このようなリードバルブを有する電動過給機付き内燃機関において、過給時の吸気抵抗を低減するには、スロットル弁を全開することが考えられる。ところが、この場合にスロットル弁の応答遅れや過給機の作動遅れ等が生じたとすると、リードバルブを閉弁させる過給圧まで過給しにくくなるという事情がある。そして、充分に過給できなかった場合には、リードバルブが過給圧前後において圧力不足により振動し、ビビリ音が発生する可能性がある。そこで、ビビリ音の発生を回避し得る対策が強く求められている。
本発明は、電動の過給機とリードバルブを備えた内燃機関において、リードバルブの振動によるビビリ音の発生を抑制する内燃機関の出力制御装置を提供することを、その目的とする。 In an internal combustion engine with an electric supercharger having such a reed valve, it is conceivable to fully open the throttle valve in order to reduce the intake resistance during supercharging. However, in this case, if there is a response delay of the throttle valve, a delay in operation of the turbocharger, etc., there is a situation that it becomes difficult to supercharge up to the supercharging pressure at which the reed valve is closed. If the supercharging cannot be performed sufficiently, the reed valve may vibrate due to insufficient pressure before and after the supercharging pressure, and chatter noise may occur. Therefore, there is a strong demand for measures that can avoid the generation of chatter noise.
An object of the present invention is to provide an output control device for an internal combustion engine that suppresses chatter noise caused by vibration of the reed valve in an internal combustion engine that includes an electric supercharger and a reed valve.

上記目的を達成するため、請求項１の発明は、機関への吸入空気量を調整するスロットル弁の上流側に位置する吸気通路に配置され、電動駆動源によって駆動される過給機を備えた内燃機関の出力制御装置であって、スロットル弁の上流側で過給機をバイパスするバイパス通路に設けられ、下流側の圧力が低くなると開き高くなると閉じるリードバルブと、スロットル弁を開閉駆動するスロットル弁駆動手段と、アクセルペダルの変位を検知するアクセル変位検知手段と、過給機による過給圧を目標過給圧とするように電動駆動源の作動を制御するとともに、スロットル弁の開度を目標スロットル開度とするようスロットル弁駆動手段の作動を制御する制御手段とを有し、制御手段は、アクセル変位検知手段により検知されたアクセルペダルの変位が所定変位以上となる領域を過給領域に設定するとともに、アクセルペダルの変位に応じて目標過給圧を設定する目標過給圧設定手段と、アクセル変位検知手段により検知されたアクセルペダルの変位に応じて目標スロットル開度を設定するとともに、過給領域では前記目標スロットル開度を急増させる目標スロットル開度設定手段とを備え、目標過給圧設定手段は、スロットル開度設定手段が目標スロットル開度を急増させるアクセルペダルの変位より小さいアクセルペダルの変位で目標過給圧を急増させるよう構成されていることを特徴としている。 In order to achieve the above object, the invention of claim 1 is provided with a supercharger which is disposed in an intake passage located upstream of a throttle valve for adjusting an intake air amount to the engine and is driven by an electric drive source. An output control device for an internal combustion engine, provided in a bypass passage that bypasses the turbocharger on the upstream side of the throttle valve, a reed valve that opens when the pressure on the downstream side becomes low and closes when the pressure becomes high, and a throttle that drives the throttle valve to open and close The valve drive means, the accelerator displacement detection means for detecting the displacement of the accelerator pedal, the operation of the electric drive source is controlled so that the supercharging pressure by the supercharger becomes the target supercharging pressure, and the opening degree of the throttle valve is adjusted. Control means for controlling the operation of the throttle valve drive means so as to achieve the target throttle opening, the control means is an accelerator pedal detected by the accelerator displacement detection means A region where the displacement is equal to or greater than a predetermined displacement is set as a supercharging region, a target supercharging pressure setting unit that sets a target supercharging pressure according to the displacement of the accelerator pedal, and an accelerator pedal detected by the accelerator displacement detecting unit The target throttle opening is set according to the displacement, and in the supercharging region, the target throttle opening setting means for rapidly increasing the target throttle opening is provided, and the target supercharging pressure setting means is controlled by the throttle opening setting means. The target boost pressure is rapidly increased by the displacement of the accelerator pedal that is smaller than the displacement of the accelerator pedal that rapidly increases the throttle opening.

請求項２の発明では、請求項１記載の内燃機関の出力制御装置において、過給機による過給圧を検知する過給圧検知手段をさらに有し、制御手段は、過給圧検知手段によって検知される実過給圧が目標過給圧を超える所定の値になった後、スロットル弁を全開とすることを特徴としている。   According to a second aspect of the invention, in the output control device for an internal combustion engine according to the first aspect, further comprising a supercharging pressure detecting means for detecting a supercharging pressure by the supercharger, wherein the control means is provided by the supercharging pressure detecting means. After the detected actual boost pressure reaches a predetermined value exceeding the target boost pressure, the throttle valve is fully opened.

本発明によれば、過給領域では目標スロットル開度を急増させ、この急増させるアクセルペダルの変位より小さいアクセルペダルの変位で目標過給圧を急増させることにより、スロットル弁と過給機の間の吸気通路内の圧力が上昇し易くなって圧力不足が起こりにくくなり、リードバルブの振動によるビビリ音の発生を抑制することができる。
According to the present invention, the target throttle opening is rapidly increased in the supercharging region, and the target supercharging pressure is rapidly increased by the displacement of the accelerator pedal that is smaller than the displacement of the accelerator pedal to be rapidly increased, so that the throttle valve and the supercharger can be increased. The pressure in the intake passage easily rises, and it becomes difficult for pressure shortage to occur, and chatter noise due to reed valve vibration can be suppressed.

本発明によれば、実過給圧が目標過給圧を超える所定の値になった後にスロットル弁を全開にすることで、より圧力不足が起こりにくくなり、リードバルブの振動によるビビリ音の発生をより確実に抑制することができる。   According to the present invention, since the throttle valve is fully opened after the actual boost pressure reaches a predetermined value exceeding the target boost pressure, pressure shortage is less likely to occur, and chatter noise is generated due to reed valve vibration. Can be more reliably suppressed.

以下、本発明の実施の形態について図面を用いて説明する。図１に示す内燃機関となるエンジン１は、その吸気系２に吸気を圧縮する過給機となるコンプレッサ４を備えている。このコンプレッサ４は、電動駆動源となるモータ５によって回転駆動される。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. An engine 1 serving as an internal combustion engine shown in FIG. 1 includes a compressor 4 serving as a supercharger for compressing intake air in an intake system 2 thereof. The compressor 4 is rotationally driven by a motor 5 serving as an electric drive source.

吸気系２には、エンジン１の図示しないインテークマニホールドに基端が接続する吸気経路３が設けられている。この吸気経路３の吸気上流側にはエアクリーナ９が配置されている。エアクリーナ９よりも吸気下流側にはコンプレッサ４と、エンジン１への吸入空気量を調整するスロットル弁６が配置されている。   The intake system 2 is provided with an intake path 3 whose base end is connected to an intake manifold (not shown) of the engine 1. An air cleaner 9 is disposed on the intake upstream side of the intake path 3. A compressor 4 and a throttle valve 6 that adjusts the amount of intake air to the engine 1 are disposed on the downstream side of the intake air relative to the air cleaner 9.

コンプレッサ４とスロットル弁６の間に位置する吸気経路３には、コンプレッサ４を迂回するように、コンプレッサ４の上流側の吸気通路３と接続する、すなわちコンプレッサ４をバイパスするバイパス通路７が設けられている。バイパス通路７において、スロットル弁６の上流側には同通路を開閉するリードバルブ８が設けられている。リードバルブ８は、コンプレッサ４が非作動の非過給時（下流側の圧力が低くなるとき）には開弁し、コンプレッサ４の作動する過給時（下流側の圧力が高くなるとき）には閉弁する構成とされている。スロットル弁６は、図示しないアクセルペダルが操作されると、その操作量（変位量）に応じて電動アクチュエータ１４によって開閉される電子スロットル弁で構成されている。   The intake passage 3 positioned between the compressor 4 and the throttle valve 6 is provided with a bypass passage 7 that is connected to the intake passage 3 on the upstream side of the compressor 4, that is, bypasses the compressor 4 so as to bypass the compressor 4. ing. In the bypass passage 7, a reed valve 8 that opens and closes the passage is provided upstream of the throttle valve 6. The reed valve 8 opens when the compressor 4 is not in operation and is not supercharged (when the pressure on the downstream side is low), and when the compressor 4 is in operation (when the pressure on the downstream side is high). Is configured to close. The throttle valve 6 is configured by an electronic throttle valve that is opened and closed by an electric actuator 14 in accordance with an operation amount (displacement amount) when an accelerator pedal (not shown) is operated.

エンジン１の出力制御装置は、制御手段となるコントローラ１０と、スロットル弁６の開度を検知し、その開度情報θＴＰＳを出力するスロットル開度検知手段１１と、エンジン回転数Ｎｅを検知する回転検知手段１２と、図示しないアクセルペダルの変位を検知し、その変位情報θＡＰＳを出力するアクセル変位検知手段１３と、スロットル弁６よりも下流側の吸気通路３に配置され、コンプレッサ４の過給圧を検知する過給圧検知手段１５を備えている。スロットル開度検知手段１１、回転検知手段１２、アクセル変位検知手段１３、過給圧検知手段１５は、それぞれセンサで構成されている。これら各センサとモータ５及び電動アクチュエータ１４は、図示しない信号線によってコントローラ１０と接続されていて、その制御下におかれている。   The output control device of the engine 1 detects the opening degree of the throttle valve 6 and detects the opening degree of the throttle valve 6 and the throttle opening degree detecting means 11 that outputs the opening degree information θTPS, and the rotation that detects the engine speed Ne. A detection means 12, an accelerator displacement detection means 13 for detecting a displacement of an accelerator pedal (not shown), and outputting displacement information θAPS, and an intake passage 3 downstream of the throttle valve 6 are disposed in the boost pressure of the compressor 4. Is provided with a supercharging pressure detecting means 15 for detecting. The throttle opening detection means 11, the rotation detection means 12, the accelerator displacement detection means 13, and the supercharging pressure detection means 15 are each constituted by sensors. These sensors, the motor 5 and the electric actuator 14 are connected to the controller 10 through signal lines (not shown) and are under the control of the controller 10.

コントローラ１０は、周知のコンピュータで構成されていて、各センサからの入力情報に応じて、電動アクチュエータ１４の駆動を制御してスロットル弁６の開度を調整するとともに、過給領域と非過給領域を判断してコンプレッサ４のモータ５の作動を制御する。   The controller 10 is composed of a well-known computer, and controls the drive of the electric actuator 14 to adjust the opening of the throttle valve 6 according to the input information from each sensor. The operation of the motor 5 of the compressor 4 is controlled by judging the region.

このコントローラ１０は、目標過給圧設定手段２０、目標スロットル開度設定手段３０を備えている。   The controller 10 includes target boost pressure setting means 20 and target throttle opening setting means 30.

目標過給圧設定手段２０は、回転検知手段１２で検知された回転数とアクセル変位検知手段１３で検知された変位情報θＡＰＳに基づきコンプレッサ４の目標過給圧Ｐｍを設定する。この目標過給圧設定手段２０には、図２に示すマップが記憶されている。このマップは、縦軸をスロットル開度θＴＰＳ、横軸をアクセル変位θＡＰＳとして、過給領域、非過給領域、過給開始となるアクセル変位時期を設定するものである。目標過給圧設定手段２０は、図２のマップに基づき、アクセルペダルの変位θＡＰＳが所定変位以上となる領域を過給領域に設定し、所定変位より小さい領域を非過給領域に設定する。なお，これらの設定はエンジン回転数Ｎｅ毎により設定値は異なる。   The target boost pressure setting means 20 sets the target boost pressure Pm of the compressor 4 based on the rotation speed detected by the rotation detection means 12 and the displacement information θAPS detected by the accelerator displacement detection means 13. The target boost pressure setting means 20 stores a map shown in FIG. In this map, the throttle opening θTPS is set on the vertical axis and the accelerator displacement θAPS is set on the horizontal axis, and the accelerator displacement timing at which the supercharging region, the non-supercharging region, and the supercharging start are set. Based on the map of FIG. 2, the target supercharging pressure setting means 20 sets a region where the accelerator pedal displacement θAPS is equal to or greater than a predetermined displacement as a supercharging region, and sets a region smaller than the predetermined displacement as a non-supercharging region. These settings vary depending on the engine speed Ne.

目標スロットル開度設定手段３０は、アクセルペダルの変位情報θＡＰＳに応じてスロットル弁６の目標スロットル開度を設定する。この目標スロットル開度設定手段３０は、過給領域であって、過給圧検知手段１５によって検知される実過給圧Ｐが目標過給圧Ｐｍを超えたとき、スロットル弁６の開度を全開とするよう目標スロットル開度を急増させる。もしくは別手段として，実過給圧Ｐが目標過給圧Ｐｍに達するまでの応答遅れを考慮し、予め目標スロットル開度を急増させるアクセル変位を，過給開始となるアクセル変位より大きい値に設定しておいても同じ効果が得られる。そして、目標過給圧設定手段２０は、目標スロットル開度設定手段３０が目標スロットル開度を急増させるアクセルペダルの変位θＡＰＳより小さい変位で目標過給圧Ｐｍを急増させる。   The target throttle opening setting means 30 sets the target throttle opening of the throttle valve 6 according to the accelerator pedal displacement information θAPS. This target throttle opening setting means 30 is a supercharging region, and when the actual supercharging pressure P detected by the supercharging pressure detection means 15 exceeds the target supercharging pressure Pm, the target throttle opening setting means 30 sets the opening of the throttle valve 6. The target throttle opening is rapidly increased so that it is fully open. Or, as another means, considering the response delay until the actual supercharging pressure P reaches the target supercharging pressure Pm, the accelerator displacement for rapidly increasing the target throttle opening is set to a value larger than the accelerator displacement at which supercharging starts. However, the same effect can be obtained. Then, the target boost pressure setting means 20 rapidly increases the target boost pressure Pm with a displacement smaller than the accelerator pedal displacement θAPS that causes the target throttle opening degree setting means 30 to rapidly increase the target throttle opening degree.

なお、リードバルブ８によるビビリ音を抑制するためには，過給機作動をスロットル全開作動よりも先に作動させる必要があるが，そのような時間差を持たせた作動を実現するには，(1）実過給圧Ｐ≧目標過給圧Ｐｍとなってからスロットル全開とすること，(2）実過給圧Ｐを無視して，過給開始となるアクセル変位＜スロットル全開とするアクセル変位となるようにすることが考えられる。   In order to suppress chatter noise caused by the reed valve 8, it is necessary to operate the turbocharger before the throttle fully opened operation. To realize such an operation with a time difference, ( 1) Make the throttle fully open after the actual boost pressure P ≥ the target boost pressure Pm. (2) Accelerate displacement that ignores the actual boost pressure P and start the supercharge <Accelerator displacement that makes the throttle fully open It can be considered to be.

以下、図４に示すフローチャートを参照しつつ説明する。
このような構成のエンジン１の出力制御装置によると、エンジン１が始動して吸気が吸気通路３内に導入される。このとき図示しないアクセルペダルの踏み込み量となるアクセル変位θＡＰＳがアクセル変位検知手段１３で検知され、回転検知手段１２によってエンジン回転数Ｎｅが検知され、過給圧検知手段１５によって実過給圧Ｐが検知される（ステップＳ１）。そして、目標過給圧設定手段２０がアクセル変位θＡＰＳとエンジン回転数Ｎｅから目標過給圧Ｐｍを設定し（ステップＳ２）、目標スロットル開度設定手段３０がアクセル変位θＡＰＳに応じて目標スロットル開度を設定する（ステップＳ３）。 Hereinafter, description will be given with reference to the flowchart shown in FIG.
According to the output control device for the engine 1 having such a configuration, the engine 1 is started and intake air is introduced into the intake passage 3. At this time, the accelerator displacement θAPS, which is the amount of depression of an accelerator pedal (not shown), is detected by the accelerator displacement detecting means 13, the engine speed Ne is detected by the rotation detecting means 12, and the actual boost pressure P is detected by the boost pressure detecting means 15. Detected (step S1). Then, the target boost pressure setting means 20 sets the target boost pressure Pm from the accelerator displacement θAPS and the engine speed Ne (step S2), and the target throttle opening setting means 30 responds to the accelerator displacement θAPS. Is set (step S3).

そして、ステップＳ４では、目標過給圧設定手段２０が、図２に示すマップに基づき現在の運転領域が過給領域であるか非過給領域であるかを判定する。ステップＳ４でＹｅｓの場合はステップＳ５へと移行し、電動過給機（コンプレッサ４を回転させるモータ５）を駆動する。電動過給機が駆動されると、コンプレッサ４の下流側の圧力が増大し、開放されていたリードバルブ８が閉弁されてバイパス通路７が閉じられる。このため、吸気はコンプレッサ４内を通過して加圧された状態でスロットル弁６部を通過してエンジン１へと導入される。なお、ステップＳ４でＮｏの場合にステップＳ１へと移行すると、インテークマニホールドの負圧による吸気の流れによりリードバルブ７が開き、吸気がバイパス通路７とコンプレッサ４内を通り、スロットル弁６の開度に応じてエンジン１へと導入される。   In step S4, the target supercharging pressure setting means 20 determines whether the current operation region is a supercharging region or a non-supercharging region based on the map shown in FIG. If Yes in step S4, the process proceeds to step S5, and the electric supercharger (motor 5 that rotates the compressor 4) is driven. When the electric supercharger is driven, the pressure on the downstream side of the compressor 4 increases, the opened reed valve 8 is closed, and the bypass passage 7 is closed. For this reason, the intake air passes through the compressor 4 and is pressurized and then passes through the throttle valve 6 and is introduced into the engine 1. If the result is No in step S4, the process proceeds to step S1, where the reed valve 7 is opened by the flow of intake air due to the negative pressure of the intake manifold, the intake air passes through the bypass passage 7 and the compressor 4, and the opening of the throttle valve 6 In response to this, it is introduced into the engine 1.

ステップＳ５を経てステップＳ６へ移行すると、ここでは実過給圧Ｐが目標過給圧Ｐｍを超えているか否かが判定される。ステップＳ６でＮｏの場合はステップＳ１へと移行し、ステップＳ６でＹｅｓ場合はステップＳ７へと移行する。   When the process proceeds to step S6 through step S5, it is determined here whether or not the actual boost pressure P exceeds the target boost pressure Pm. If No in step S6, the process proceeds to step S1, and if Yes in step S6, the process proceeds to step S7.

ステップＳ７では、目標スロットル開度設定手段３０がスロットル弁６の開度を全開とするよう目標スロットル開度を急増させ、目標過給圧設定手段２０が目標スロットル開度を急増させるアクセルペダルの変位θＡＰＳより小さい変位で目標過給圧Ｐｍを急増させる（図２、図３参照）。これにより、コンプレッサ４による過給開始後に遅れてスロットル弁６が開くこととなり、スロットル弁６とコンプレッサ４の間の吸気通路３内の圧力が上昇し易くなる。このため、コンプレッサ４下流側での圧力不足が起こりにくくなるので、リードバルブ８の振動によるビビリ音の発生を抑制することができるとともに、リードバルブ８の応答遅れも低減できる。   In step S7, the displacement of the accelerator pedal that causes the target throttle opening setting means 30 to rapidly increase the target throttle opening so that the opening of the throttle valve 6 is fully opened, and the target boost pressure setting means 20 to rapidly increase the target throttle opening. The target boost pressure Pm is rapidly increased with a displacement smaller than θAPS (see FIGS. 2 and 3). As a result, the throttle valve 6 opens after a start of supercharging by the compressor 4, and the pressure in the intake passage 3 between the throttle valve 6 and the compressor 4 is likely to increase. For this reason, since insufficient pressure on the downstream side of the compressor 4 is less likely to occur, chatter noise due to vibration of the reed valve 8 can be suppressed, and response delay of the reed valve 8 can also be reduced.

さらに、ステップＳ６で実過給圧Ｐ≧目標過給圧Ｐｍと判定された後に、ステップＳ７でスロットル弁６を全開にすることで、スロットル弁６とコンプレッサ４の間の吸気通路３内の圧力が実過給圧になった後にスロットル弁６が全開することとなる。これによって、圧力不足が解消されるので、リードバルブ８の振動によるビビリ音の発生をより確実に抑制することができる。   Further, after it is determined in step S6 that the actual boost pressure P ≧ target boost pressure Pm, the throttle valve 6 is fully opened in step S7, whereby the pressure in the intake passage 3 between the throttle valve 6 and the compressor 4 is increased. After the actual boost pressure is reached, the throttle valve 6 is fully opened. As a result, the pressure shortage is eliminated, so that the chatter noise caused by the vibration of the reed valve 8 can be more reliably suppressed.

リードバルブ８のビビリ音の抑制の手法としては、このような形態に限定されるものではなく、図３に示すように、過給開始時期となる目標過給圧Ｐｍを、応答遅れを見越して図３に破線で示すように予め所定量高めに設定しておく。このようにしても、過給開始直後の実過給圧が高められて圧力不足がなくなり、リードバルブ８の振動によるビビリ音の発生をより確実に抑制することができる。   The method of suppressing the chatter noise of the reed valve 8 is not limited to such a form. As shown in FIG. 3, the target supercharging pressure Pm that is the supercharging start timing is set in anticipation of a response delay. As shown by a broken line in FIG. 3, it is set in advance by a predetermined amount. Even if it does in this way, the actual supercharging pressure immediately after a supercharging start will be raised, pressure shortage will disappear, and generation | occurrence | production of the chatter sound by vibration of the reed valve 8 can be suppressed more reliably.

本発明にかかる内燃機関の出力制御装置の概略構成を示す図である。It is a figure which shows schematic structure of the output control apparatus of the internal combustion engine concerning this invention. アクセル開度とスロットル開度との関係を示す図である。It is a figure which shows the relationship between an accelerator opening and a throttle opening. 目標過給圧の特性を示す図である。It is a figure which shows the characteristic of a target supercharging pressure. 本発明にかかる内燃機関の出力制御装置の作動を示すフローチャートである。It is a flowchart which shows the action | operation of the output control apparatus of the internal combustion engine concerning this invention.

符号の説明Explanation of symbols

１ 内燃機関
３ 吸気通路
４ 過給機
５ 電動駆動源
６ スロットル弁
７ バイパス通路
８ リードバルブ
１０ 制御手段
１１ スロットル開度検知手段
１２ 回転検知手段
１３ アクセル変位検知手段
１５ 過給圧検知手段
２０ 目標過給圧設定手段
３０ 目標スロットル開度設定手段
θＡＰＳ アクセル変位
θＴＰＳ スロットル開度 DESCRIPTION OF SYMBOLS 1 Internal combustion engine 3 Intake passage 4 Supercharger 5 Electric drive source 6 Throttle valve 7 Bypass passage 8 Reed valve 10 Control means 11 Throttle opening detection means 12 Rotation detection means 13 Acceleration displacement detection means 15 Supercharging pressure detection means 20 Target supercharge Supply pressure setting means 30 Target throttle opening setting means θAPS Accelerator displacement θTPS Throttle opening

Claims (2)

機関への吸入空気量を調整するスロットル弁の上流側に位置する吸気通路に配置され、電動駆動源によって駆動される過給機を備えた内燃機関の出力制御装置であって、
前記スロットル弁の上流側で前記過給機をバイパスするバイパス通路に設けられ、下流側の圧力が低くなると開き高くなると閉じるリードバルブと、
前記スロットル弁を開閉駆動するスロットル弁駆動手段と、
アクセルペダルの変位を検知するアクセル変位検知手段と、
前記過給機による過給圧を目標過給圧とするよう前記電動駆動源の作動を制御するとともに、前記スロットル弁の開度を目標スロットル開度とするよう前記スロットル弁駆動手段の作動を制御する制御手段と、を有し、
前記制御手段は、
前記アクセル変位検知手段により検知されたアクセルペダルの変位が所定変位以上となる領域を過給領域に設定するとともに、前記アクセルペダルの変位に応じて前記目標過給圧を設定する目標過給圧設定手段と、
前記アクセル変位検知手段により検知されたアクセルペダルの変位に応じて前記目標スロットル開度を設定するとともに、前記過給領域では前記目標スロットル開度を急増させる目標スロットル開度設定手段と、を備え、
前記目標過給圧設定手段は、前記スロットル開度設定手段が前記目標スロットル開度を急増させるアクセルペダルの変位より小さいアクセルペダルの変位で前記目標過給圧を急増させるよう構成されていることを特徴とする内燃機関の出力制御装置。 An output control device for an internal combustion engine including a supercharger disposed in an intake passage located upstream of a throttle valve that adjusts an intake air amount to the engine and driven by an electric drive source,
A reed valve that is provided in a bypass passage that bypasses the supercharger on the upstream side of the throttle valve, and that opens when the pressure on the downstream side decreases and closes when the pressure increases;
Throttle valve drive means for opening and closing the throttle valve;
An accelerator displacement detecting means for detecting the displacement of the accelerator pedal;
The operation of the electric drive source is controlled so that the supercharging pressure by the supercharger becomes the target supercharging pressure, and the operation of the throttle valve driving means is controlled so that the opening of the throttle valve becomes the target throttle opening. Control means for
The control means includes
A target boost pressure setting that sets a region where the displacement of the accelerator pedal detected by the accelerator displacement detection means is equal to or greater than a predetermined displacement as a boost region and sets the target boost pressure according to the displacement of the accelerator pedal Means,
Setting the target throttle opening according to the displacement of the accelerator pedal detected by the accelerator displacement detection means, and a target throttle opening setting means for rapidly increasing the target throttle opening in the supercharging region,
The target boost pressure setting means is configured to rapidly increase the target boost pressure with a displacement of an accelerator pedal that is smaller than a displacement of an accelerator pedal that causes the target throttle opening to rapidly increase. An internal combustion engine output control device. 請求項１記載の内燃機関の出力制御装置において、
前記過給機による過給圧を検知する過給圧検知手段をさらに有し、
前記制御手段は、前記過給圧検知手段によって検知される実過給圧が前記目標過給圧を超える所定の値になった後、前記スロットル弁を全開とすることを特徴とする内燃機関の出力制御装置。 In the internal combustion engine output control device according to claim 1,
Further comprising a supercharging pressure detecting means for detecting a supercharging pressure by the supercharger;
The control means fully opens the throttle valve after the actual boost pressure detected by the boost pressure detecting means reaches a predetermined value exceeding the target boost pressure. Output control device.
JP2007052592A 2007-03-02 2007-03-02 Output control device for internal combustion engine Expired - Fee Related JP4737118B2 (en)

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Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2005188483A (en) * 2003-12-26 2005-07-14 Mitsubishi Motors Corp Control device of engine with motor-driven supercharger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6183460A (en) * 1984-09-29 1986-04-28 Mazda Motor Corp Throttle valve controller for supercharged engine
JP2766294B2 (en) * 1988-03-31 1998-06-18 マツダ株式会社 Engine supercharger

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005188483A (en) * 2003-12-26 2005-07-14 Mitsubishi Motors Corp Control device of engine with motor-driven supercharger

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