JPS63147936A - Throttle valve control device for internal combustion engine - Google Patents
Throttle valve control device for internal combustion engineInfo
- Publication number
- JPS63147936A JPS63147936A JP29539786A JP29539786A JPS63147936A JP S63147936 A JPS63147936 A JP S63147936A JP 29539786 A JP29539786 A JP 29539786A JP 29539786 A JP29539786 A JP 29539786A JP S63147936 A JPS63147936 A JP S63147936A
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- return spring
- throttle
- actuator
- fully closed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 9
- 230000005856 abnormality Effects 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles
- F02D2011/102—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles at least one throttle being moved only by an electric actuator
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はリンク機構を介することなくアクチュエータに
より電気的にスロットル弁壱駆動する内燃機関用スロッ
トル弁制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a throttle valve control device for an internal combustion engine in which a throttle valve is electrically driven by an actuator without using a link mechanism.
従来この種のものとして、スロットル弁の制御装置やア
クチュエータの異常によってスロットル弁の駆動力がな
くなったときに、スロットル弁を全閉とするためのリタ
ーンスプリングが設けられている（例えば、特開昭５９
−１３１７３７号公報、特開昭６１−１０４１３４号公
報）。Conventionally, this type of device is provided with a return spring to fully close the throttle valve when the driving force of the throttle valve is lost due to an abnormality in the throttle valve control device or actuator (for example, 59
-131737, Japanese Unexamined Patent Publication No. 104134/1983).
〔発明が解決しようとする問題点］
ところが、上述した従来のものでは、スロットル弁を開
閉するたびにリターンスプリングが伸縮し、その劣化や
切断によりスロットル弁を全閉にする機能が失われると
、アクチュエータの駆動力を切ってもスロットル弁が全
閉にならないという問題がある。[Problems to be Solved by the Invention] However, in the conventional system described above, the return spring expands and contracts each time the throttle valve is opened and closed, and if the return spring deteriorates or breaks and loses its ability to fully close the throttle valve, There is a problem in that the throttle valve does not fully close even if the driving force of the actuator is cut off.
そこで、本発明はリターンスプリングの劣化や断線を検
出し、そのときにもスロットル弁を全閉にできるように
するものである。Therefore, the present invention detects deterioration or disconnection of the return spring, and allows the throttle valve to be fully closed even in such a case.
〔問題点を解決するための手段］
そのため本発明は第１図に示すごとく、内燃機関に吸入
される空気量を調節するスロットル弁と、このスロット
ル弁の開度を制御するための制御パラメータを検出する
スロットル弁制御用検出手段と、前記スロットル弁を所
定の開度に駆動するためのスロットル弁駆動用アクチュ
エータと、前記スロットル弁に全閉方向の力を与えるリ
ターンスプリングと、前記スロットル弁制御用検出手段
により検出された制御パラメータに応じて前記スロット
ル弁を所定の開度にするための指令信号を発生するスロ
ットル弁開度指示手段と、このスロットル弁開度指示手
段よりの指令信号に応じて前記アクチュエータを駆動さ
せるためのアクチュエータ駆動手段と、前記スロットル
弁開度指示手段の指令信号がスロットル弁全閉位置にな
ると前記アクチュエータの駆動力を断って前記リターン
スプリングの復元力により前記スロットル弁を全閉位置
に復帰させるための駆動力遮断手段と、この駆動力遮断
手段により前記アクチュエータへの駆動力が断たれてか
ら所定時間後の前記スロットル弁の開度位置が全閉か否
かによって前記リターンスプリングの異常を判別する異
常判別手段と、この異常判別手段によりリターンスプリ
ングの異常を判別すると前記スロットル弁全閉位置の指
令信号が発生した場合における前記駆動力遮断手段の動
作を無効にして前記アクチュエータによって前記スロッ
トル弁を全弁位置に駆動するための駆動力遮断無効手段
とを備える内燃機関用スロットル弁制御装置を提供する
ものである。[Means for Solving the Problems] Therefore, as shown in FIG. 1, the present invention provides a throttle valve that adjusts the amount of air taken into the internal combustion engine, and a control parameter that controls the opening degree of the throttle valve. a throttle valve control detection means for detecting the throttle valve, a throttle valve drive actuator for driving the throttle valve to a predetermined opening degree, a return spring for applying a force in the fully closing direction to the throttle valve, and a throttle valve control detection means for controlling the throttle valve. Throttle valve opening instruction means for generating a command signal for setting the throttle valve to a predetermined opening degree in accordance with the control parameter detected by the detection means; When the actuator driving means for driving the actuator and the command signal of the throttle valve opening instruction means reach the fully closed position of the throttle valve, the driving force of the actuator is cut off and the restoring force of the return spring fully closes the throttle valve. a driving force cutoff means for returning the actuator to the closed position; and a drive force cutoff means for returning the throttle valve to the closed position depending on whether the opening position of the throttle valve is fully closed or not after a predetermined time after the drive force to the actuator is cut off by the drive force cutoff means. an abnormality determining means for determining whether there is an abnormality in the spring; and when the abnormality determining means determines whether the return spring is abnormal, the actuator is configured to disable the operation of the driving force cutoff means when a command signal for the fully closed position of the throttle valve is generated; According to the present invention, there is provided a throttle valve control device for an internal combustion engine, comprising a driving force cutoff/disabling means for driving the throttle valve to a full valve position.
［作用］
これにより、スロットル弁開度指示手段の指令信号がス
ロットル弁全閉位置になると駆動力遮断手段によりアク
チュエータの駆動力を断ってリターンスプリングの復元
力によりスロットル弁を全閉位置に復帰させ、この＋う
にしてアクチェエータの駆動力が断たれてから所定時間
後にスロットル弁の開度位置が全閉か否かを異常判別手
段により判別する。そして、この異常が検出されるとス
ロットル弁全閉位置の指令信号が発生した場合における
駆動力遮断手段の動作を駆動力遮断無効手段により無効
にして、アクチュエータによってスロットル弁を全閉位
置に駆動する。[Function] As a result, when the command signal from the throttle valve opening instruction means reaches the fully closed position of the throttle valve, the driving force cutoff means cuts off the driving force of the actuator, and the restoring force of the return spring returns the throttle valve to the fully closed position. After a predetermined period of time after the driving force of the actuator is cut off in this manner, the abnormality determining means determines whether the opening position of the throttle valve is fully closed. When this abnormality is detected, the operation of the drive force cutoff means when a command signal for the throttle valve fully closed position is generated is disabled by the drive force cutoff disabling means, and the actuator drives the throttle valve to the fully closed position. .
以下本発明を図に示す実施例について説明する。 The present invention will be described below with reference to embodiments shown in the drawings.
本発明装置による具体的な各部品の結びつきの一例を第
２図に示す。エンジンｌの空気流量を制御するスロット
ル弁２は、サージタンク３の直前、に取りつけられ、吸
気管４、吸気ポート５を経て吸気弁８が開いて燃焼室９
へ空気が吸入されるとともに図示しない電子式燃料噴射
装置で制御される噴射弁７からの燃料と混合し、点火プ
ラグ１０で着火してピストン１）を押し下げ機関トルク
を生む。燃焼後のガスはピストン１）の動きに従って排
気弁１２が開いた時排気管１３、触媒コンバータ１３ａ
を通って排出される。噴射弁７の制御に必要な情報は吸
入空気量を吸気管圧力で推定するための圧力センナ１４
、エアクリーナｌａに取りつけられた吸気温センサ１５
、スロットル弁２のスロットルシャフト３３に取りつけ
られたスロットルセンサ１６、排気ガス中の酸素濃度を
検出する空燃比センサ１７、冷却水温センサ１８、イグ
ナイタ２２の点火高電圧を各気筒の点火プラグ１０に分
配するディストリビュータ２０に取りつけられた回転角
上ンサ１９等から得られる。FIG. 2 shows an example of a specific connection of each component in the apparatus of the present invention. A throttle valve 2 that controls the air flow rate of the engine 1 is installed just before a surge tank 3, and an intake valve 8 is opened via an intake pipe 4 and an intake port 5 to open a combustion chamber 9.
As air is drawn into the engine, it mixes with fuel from an injection valve 7 controlled by an electronic fuel injection device (not shown), and is ignited by a spark plug 10 to push down a piston 1) and generate engine torque. The gas after combustion is released into the exhaust pipe 13 and the catalytic converter 13a when the exhaust valve 12 opens according to the movement of the piston 1).
is discharged through the Information necessary for controlling the injection valve 7 is provided by a pressure sensor 14 for estimating the amount of intake air using intake pipe pressure.
, an intake air temperature sensor 15 attached to the air cleaner la
, a throttle sensor 16 attached to the throttle shaft 33 of the throttle valve 2, an air-fuel ratio sensor 17 that detects the oxygen concentration in exhaust gas, a cooling water temperature sensor 18, and the ignition high voltage of the igniter 22 is distributed to the spark plugs 10 of each cylinder. The angle of rotation is obtained from the rotation angle sensor 19 etc. attached to the distributor 20.
スロットル制御ユニット２５にもこのうち各センサ１４
，１５，１６．１８．１９の信号が人力され、さらにア
クセルペダル２６に装着されたアクセルセンサ２７から
の連続的アクセル信号２７ａ−１全閉検出信号２７ｂ、
スロットル駆動用モータ３０の全閉信号３１も入力し、
スロットル弁開度を制御する。このうちセンサ１６．２
７はポテンショメータで回転位置に応じた電圧を出力す
る。The throttle control unit 25 also includes each sensor 14.
, 15, 16, 18, and 19 are manually inputted, and a continuous accelerator signal 27a-1 from the accelerator sensor 27 attached to the accelerator pedal 26, a fully closed detection signal 27b,
Also input the fully closed signal 31 of the throttle drive motor 30,
Controls throttle valve opening. Of these, sensor 16.2
7 is a potentiometer that outputs a voltage according to the rotational position.
また、スロットル制御ユニット（ＥＣＵ）２５はリター
ンスプリング異常表示用の警告灯３５の点灯制御を行う
。また、スロットルシャフト３３にはリターンスプリン
グ３４が取り付けられていて、スロットル駆動用モータ
３０がトルクを失ったときにスロットル弁２を全閉とす
るように構成しである。Further, the throttle control unit (ECU) 25 controls the lighting of a warning light 35 for indicating a return spring abnormality. Further, a return spring 34 is attached to the throttle shaft 33, and is configured to fully close the throttle valve 2 when the throttle drive motor 30 loses torque.
ＥＣＵ２５は、マイクロコンピュータを中１ｃｘｃこ構
成され、その内部構成を第３図に示す。パスライン１５
０を介してＲＯＭ１０８．ＲＡＭ１ｏ７゜イグニション
（ＩＧ）スイッチ６１がＯＦＦの時もパンテリー６０か
ら専用電源回路１０５にょっ、て電流を供給されその内
容を保持するＲＡＭｌ０６、内部タイマ１０９．回転角
センサ１９がらの入力周期を計測する入力カウンタ１０
１、入力カウンタ１０１と内部タイマ１０９の内容によ
ってＣＰＵ１００に割り込みをかける割り込み制御部１
０２、及び入力ポート１０３とモータ３ｏを駆動する出
力回路１）０がデータのやりとりを行う。The ECU 25 is composed of a microcomputer, and its internal configuration is shown in FIG. pass line 15
0 via ROM108. RAM106, internal timer 109.RAM106, which is supplied with current from the pantry 60 through the dedicated power supply circuit 105 and retains its contents even when the ignition (IG) switch 61 is OFF. An input counter 10 that measures the input cycle of the rotation angle sensor 19
1. Interrupt control unit 1 that interrupts the CPU 100 according to the contents of the input counter 101 and internal timer 109
02, and the input port 103 and the output circuit 1)0 that drives the motor 3o exchange data.
入力ポート１０３には入力電圧の高低のみを入力するデ
ジタル入力ボートと、入力をＡ／Ｄ変換して８から１０
ビツトのデジタル値として入力するＡ／Ｄ変換ボートが
いくつか設けられていて、前者にてセンサ２７ｂ、３１
からの出力が、後者にはセンサ１５，２７ａ、１４，１
６．１８の出力が接続される。パンテリ６０からＩＧス
イッチ６１を通じて電源回路１０４へ約１４Ｖの電圧が
供給され、電源回路１０４ではそれを安定化した５■に
変換してＲＡＭ １０６以外の回路へ供給する。The input port 103 has a digital input port that inputs only the high and low input voltage, and a digital input port that converts the input from 8 to 10.
Several A/D conversion boards are provided for inputting bit digital values.
The latter has outputs from sensors 15, 27a, 14, 1
6.18 outputs are connected. A voltage of approximately 14V is supplied from the pantry 60 to the power supply circuit 104 through the IG switch 61, and the power supply circuit 104 converts it into a stabilized voltage of 5V and supplies it to circuits other than the RAM 106.
ハスライン１５０には出力回路１）０も接続されていて
ＣＰＵ１００から送られるデータに基づいてモータ３０
を駆動してスロットル弁２の開度を゛変える。出力回路
１）１は警告灯３５を点灯する。An output circuit 1)0 is also connected to the lotus line 150, and the motor 30 is output based on data sent from the CPU 100.
to change the opening degree of the throttle valve 2. The output circuit 1) 1 turns on the warning light 35.
次に、上記構成においてその作動を説明する。Next, the operation of the above configuration will be explained.
スロットル制御ユニット２５での具体的な処理の流れを
フローチャートとして第４図に示した。A specific flow of processing in the throttle control unit 25 is shown in FIG. 4 as a flowchart.
この処理は例えば１０ｍｓ毎にアクセル操作量の入力処
理の後で実行される。ステップ１００でまず目標スロッ
トル弁度ＴＡがＯ（全閉）か判定し、０でなければステ
ップ１７０で通常のモータ駆動処理を行い、終了する。This process is executed, for example, every 10 ms after the accelerator operation amount input process. In step 100, it is first determined whether the target throttle valve degree TA is O (fully closed), and if it is not 0, normal motor drive processing is performed in step 170, and the process ends.
ＴＡがＯのときはステップ１）０に進んで、リターンス
プリングフェイルフラグｘｒをみて、Ｘｆがセットされ
ているときはすでにリターンスプリング３４が異常であ
るからステップ１７０で通常の方法でモータを駆動する
。なお、Ｘｆは制御用ユニット２５をパンテリ６０につ
ないだ後の初期化、すなわちＲＡＭ Ｉ Ｏ６の初期化
でリセントされる。Ｘｆがリセントされているときはス
テップ１２０に進んでモータ３０の駆動電源を切って、
リターンスプリング３４の力でスロットル弁２を全閉状
態とする。次にステップ１３０に進んで所定時間、すな
わちスロットル弁２の慣性と正常なリターンスプリング
３・１との力の関係から定まる全閉までの時間待ってか
らステップ１４０に進んで実際にスロットル弁２が全閉
となっているかを判定し、全閉ならばそのまま終了し、
そうでなければＸｒをセントじてがらモータ３０でスロ
ットル弁２をスロットル全閉位置センサ３１で検出され
る全閉位置まで駆動する。If TA is O, proceed to step 1) 0, check the return spring fail flag xr, and if Xf is set, it means that the return spring 34 is already abnormal, so in step 170, drive the motor in the normal way. . Note that Xf is re-centered at the initialization after connecting the control unit 25 to the pantry 60, that is, at the initialization of the RAM I O6. When Xf is recentered, the process proceeds to step 120, where the drive power for the motor 30 is cut off.
The force of the return spring 34 brings the throttle valve 2 into a fully closed state. Next, the process advances to step 130, and after waiting for a predetermined time, that is, the fully closed time determined from the relationship between the inertia of the throttle valve 2 and the force of the normal return spring 3.1, the process advances to step 140, where the throttle valve 2 is actually closed. Determine whether it is fully closed, and if it is fully closed, exit as is,
Otherwise, the throttle valve 2 is driven by the motor 30 to the fully closed position detected by the throttle fully closed position sensor 31 while maintaining Xr.
第５図は異常対策用のモジュールで、たとえば１００ｍ
ｓ毎に起動される。ここではＸｒがセットされていれば
警告灯３５を点灯し、運転者にリターンスプリング３４
が異常であることを知らせる。また、リターンスプリン
グ３４の修理後、制御ユニント２５を一時的にバッテリ
６０から切りはなせば、次の初期化でＸｆはりセントさ
れる。Figure 5 shows a module for abnormality countermeasures, for example, 100 m.
It is activated every s. Here, if Xr is set, the warning light 35 is lit and the driver is informed that the return spring 34
Informs that something is abnormal. Furthermore, if the control unit 25 is temporarily disconnected from the battery 60 after the return spring 34 is repaired, the Xf will be reset at the next initialization.
なお、ステップ１３０で所定時間待つと述べたが、これ
は処理の概念を示したものであって、実際に例えばむだ
時間ループとして知られる処理を行うのでなく、所定時
間後に割り込みを発生するよう設定し、その割り込みに
よってステップ１４０以下の処理を再開し、その間他の
処理を行うなどの構成にしても問題はない。It should be noted that although it has been stated that step 130 waits for a predetermined time, this is just to show the concept of the process, and instead of actually performing a process known as a dead time loop, for example, it is set to generate an interrupt after a predetermined time. However, there is no problem in a configuration in which the processing from step 140 onwards is restarted by the interrupt, and other processing is performed during that time.
こうしてリターンスプリング３４がいったんフェイルと
判定されれば修理完ｒまでＸｆはセットしたままとする
のが望ましい。即ち、リターンスプリング３４が弱って
きたときは全閉になったりならなかったりを繰り返すこ
とが予測されるからである。従って、Ｘｆはスロットル
弁制御ユニット２５のＲＡＭ１０６内に格納するのがよ
い。Once it is determined that the return spring 34 has failed in this way, it is desirable to keep Xf set until the repair is completed. That is, when the return spring 34 becomes weak, it is predicted that it will repeatedly be fully closed and not fully closed. Therefore, Xf is preferably stored in the RAM 106 of the throttle valve control unit 25.
以上のようにしてスロットル弁制御装置を構成するうえ
で極めて重要な問題であったリターンスプリング３４と
の２重故障が解消され、本構成によって初めて車両の安
全性が確保されるといえる。As described above, the double failure with the return spring 34, which was an extremely important problem in configuring the throttle valve control device, is resolved, and it can be said that the safety of the vehicle is ensured for the first time with this configuration.
なお、第４図図示のステップ１２０におけるモータ駆動
電源の遮断は、ステップ１４０にてスロットル弁２が全
閉か否かの判定が終了するまでの所定時間のみ実行する
ようにしてもよい。The motor drive power source may be cut off in step 120 shown in FIG. 4 only for a predetermined period of time until the determination as to whether the throttle valve 2 is fully closed is completed in step 140.
また、第４図のステップ１００と１）０との間に第６図
に示すごとく、前回の目標スロットル開度が所定値（例
えば５°）以上かを判定するステップ１）１を追加し、
前回の目標スロットル開度が所定値以上のときのみステ
ップ１）０に進み、所定開度未満のときにはステップ１
７０に進むようにしてもよい。Further, as shown in FIG. 6 between steps 100 and 1) 0 in FIG. 4, step 1) 1 is added to determine whether the previous target throttle opening is equal to or greater than a predetermined value (for example, 5 degrees),
Proceed to step 1) 0 only when the previous target throttle opening is greater than or equal to a predetermined value, and proceed to step 1 when it is less than the predetermined opening.
The process may proceed to step 70.
さらに、第４図のステップ１００と１）０との間に第７
図に示すごとく、前回ステップ１２０を実行してから、
所定時間、所定エンジン回転数、所定走行距離のうち１
つの間隔ａを経過したかを判定するステップ１）２を追
加しく第６図のステップ１）１を併用してもよい）、所
定の間隔ａを経過したときのみステップ１）０に進み、
所定の間隔ａを経過していないときにはステップ１７０
に進むようにしてもよい。Furthermore, between step 100 and 1)0 in FIG.
As shown in the figure, since the last time step 120 was executed,
1 out of a predetermined time, a predetermined engine speed, and a predetermined mileage
Step 1) 2 is added to determine whether a predetermined interval a has elapsed (or step 1) 1 in FIG.
If the predetermined interval a has not elapsed, step 170
You may proceed to
以上述べたように本発明においては、スロットル弁全閉
位置の指令信号が発生するとアクチュエータの駆動力を
断ってリターンスプリングの復元力によりスロットル弁
を全閉位置に復帰させ、その後にスロットル弁の開度位
置が全閉か否かを判別することによって、リターンスプ
リングの劣化や断線を確実に検出することができるのみ
ならず、異常が検出されるとスロットル弁全閉位置の指
令信号が発生した場合にアクチュエータによってスロッ
トル弁を全閉位置に駆動して、リターンスプリングが劣
化や断線したときにもスロットル弁を確実に全閉位置に
駆動することができるという優れた効果がある。As described above, in the present invention, when a command signal for the fully closed position of the throttle valve is generated, the driving force of the actuator is cut off, the restoring force of the return spring returns the throttle valve to the fully closed position, and then the throttle valve is opened. By determining whether the throttle valve is fully closed, it is possible to not only reliably detect deterioration or disconnection of the return spring, but also to generate a command signal for the throttle valve fully closed position when an abnormality is detected. The throttle valve is driven to the fully closed position by the actuator, and there is an excellent effect that the throttle valve can be reliably driven to the fully closed position even when the return spring is deteriorated or disconnected.
第１図は本発明の特許請求の範囲対応図、第２図は本発
明装置の一実施例を示す部分断面構成図、第３図は第２
図図示装置におけるスロットル制御ユニットの詳細ブロ
ック図、第４図および第５図は第２図図示装置の作動説
明に供するフローチャート、第６図および第７図は第４
図図示フローチャートの他の実施例を示す要部のフロー
チャートである。
ｌ・・・エンジン、２・・・スロットル弁、１４・・・
圧力センサ、１５・・・吸気温センサ、１６・・・スロ
ットルセンサ、１８・・・冷却水温センサ、１９・・・
回転角センサ、３４・・・リターンスプリング、２５・
・・スロットル制御ユニット、３０・・・スロットル弁
駆動用モータ、３１・・・スロントル全閉位置センサ。FIG. 1 is a diagram corresponding to the claims of the present invention, FIG. 2 is a partial cross-sectional configuration diagram showing an embodiment of the device of the present invention, and FIG. 3 is a diagram corresponding to the claims of the present invention.
4 and 5 are flowcharts for explaining the operation of the device shown in FIG.
It is a flowchart of the principal part which shows another Example of an illustrated flowchart. l...engine, 2...throttle valve, 14...
Pressure sensor, 15... Intake temperature sensor, 16... Throttle sensor, 18... Cooling water temperature sensor, 19...
Rotation angle sensor, 34...Return spring, 25.
... Throttle control unit, 30... Throttle valve drive motor, 31... Throntle fully closed position sensor.
Claims (2)
ル弁と、このスロットル弁の開度を制御するための制御
パラメータを検出するスロットル弁制御用検出手段と、
前記スロットル弁を所定の開度に駆動するためのスロッ
トル弁駆動用アクチュエータと、前記スロットル弁に全
閉方向の力を与えるリターンスプリングと、前記スロッ
トル弁制御用検出手段により検出された制御パラメータ
に応じて前記スロットル弁を所定の開度にするための指
令信号を発生するスロットル弁開度指示手段と、このス
ロットル弁開度指示手段よりの指令信号に応じて前記ア
クチュエータを駆動させるためのアクチュエータ駆動手
段と、前記スロットル弁開度指示手段の指令信号がスロ
ットル弁全閉位置になると前記アクチュエータの駆動力
を断って前記リターンスプリングの復元力により前記ス
ロットル弁を全閉位置に復帰させるための駆動力遮断手
段と、この駆動力遮断手段により前記アクチュエータへ
の駆動力が断たれてから所定時間後の前記スロットル弁
の開度位置が全閉か否かによって前記リターンスプリン
グの異常を判別する異常判別手段と、この異常判別手段
によりリターンスプリングの異常を判別すると前記スロ
ットル弁全閉位置の指令信号が発生した場合における前
記駆動力遮断手段の動作を無効にして前記アクチュエー
タによって前記スロットル弁を全弁位置に駆動するため
の駆動力遮断無効手段とを備える内燃機関用スロットル
弁制御装置。(1) a throttle valve that adjusts the amount of air taken into the internal combustion engine; a throttle valve control detection means that detects a control parameter for controlling the opening degree of the throttle valve;
a throttle valve driving actuator for driving the throttle valve to a predetermined opening degree; a return spring for applying a force in a fully closing direction to the throttle valve; and a control parameter detected by the throttle valve control detection means. throttle valve opening instructing means for generating a command signal for setting the throttle valve to a predetermined opening degree; and actuator driving means for driving the actuator in response to the command signal from the throttle valve opening instructing means. When the command signal of the throttle valve opening instruction means reaches the fully closed position of the throttle valve, the driving force of the actuator is cut off and the restoring force of the return spring returns the throttle valve to the fully closed position. and an abnormality determining means for determining whether the return spring is abnormal based on whether the opening position of the throttle valve is fully closed after a predetermined time after the driving force cutoff means cuts off the driving force to the actuator. When the abnormality determining means determines that there is an abnormality in the return spring, the actuator drives the throttle valve to the full valve position by disabling the operation of the driving force cutoff means when a command signal for the throttle valve fully closed position is generated. A throttle valve control device for an internal combustion engine, comprising a driving force cutoff disabling means.
置の指令信号が発生してから所定時間だけ前記アクチュ
エータの駆動力を断つものである特許請求の範囲第１項
記載の内燃機関用スロットル弁制御装置。(2) The throttle for an internal combustion engine according to claim 1, wherein the driving force cutoff means cuts off the driving force of the actuator for a predetermined period of time after the command signal for the fully closed position of the throttle valve is generated. Valve control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61295397A JP2518235B2 (en) | 1986-12-11 | 1986-12-11 | Throttle valve control device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61295397A JP2518235B2 (en) | 1986-12-11 | 1986-12-11 | Throttle valve control device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63147936A true JPS63147936A (en) | 1988-06-20 |
| JP2518235B2 JP2518235B2 (en) | 1996-07-24 |
Family
ID=17820084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61295397A Expired - Lifetime JP2518235B2 (en) | 1986-12-11 | 1986-12-11 | Throttle valve control device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518235B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03290041A (en) * | 1990-04-06 | 1991-12-19 | Nissan Motor Co Ltd | Throttle valve controller for internal combustion engine |
| JPH0460143A (en) * | 1990-06-29 | 1992-02-26 | Nissan Motor Co Ltd | Intake device of internal combustion engine |
| JPH0430242U (en) * | 1990-07-06 | 1992-03-11 | ||
| WO2003006806A1 (en) * | 2001-07-12 | 2003-01-23 | Siemens Aktiengesellschaft | Throttle valve housing |
| JP2013177848A (en) * | 2012-02-28 | 2013-09-09 | Keihin Corp | Electronically controlled throttle device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252839A (en) * | 1985-04-30 | 1986-11-10 | Nissan Motor Co Ltd | Acceleration control device for vehicle |
| JPS6220650A (en) * | 1985-07-19 | 1987-01-29 | Nissan Motor Co Ltd | Accelerator controller for vehicles |
-
1986
- 1986-12-11 JP JP61295397A patent/JP2518235B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252839A (en) * | 1985-04-30 | 1986-11-10 | Nissan Motor Co Ltd | Acceleration control device for vehicle |
| JPS6220650A (en) * | 1985-07-19 | 1987-01-29 | Nissan Motor Co Ltd | Accelerator controller for vehicles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03290041A (en) * | 1990-04-06 | 1991-12-19 | Nissan Motor Co Ltd | Throttle valve controller for internal combustion engine |
| JPH0460143A (en) * | 1990-06-29 | 1992-02-26 | Nissan Motor Co Ltd | Intake device of internal combustion engine |
| JPH0430242U (en) * | 1990-07-06 | 1992-03-11 | ||
| WO2003006806A1 (en) * | 2001-07-12 | 2003-01-23 | Siemens Aktiengesellschaft | Throttle valve housing |
| JP2013177848A (en) * | 2012-02-28 | 2013-09-09 | Keihin Corp | Electronically controlled throttle device |
| GB2499893B (en) * | 2012-02-28 | 2018-06-20 | Keihin Corp | Electronically controlled throttle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2518235B2 (en) | 1996-07-24 |
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