JPH0612231Y2 - Disconnection check device for speed control device - Google Patents
Disconnection check device for speed control deviceInfo
- Publication number
- JPH0612231Y2 JPH0612231Y2 JP1985199919U JP19991985U JPH0612231Y2 JP H0612231 Y2 JPH0612231 Y2 JP H0612231Y2 JP 1985199919 U JP1985199919 U JP 1985199919U JP 19991985 U JP19991985 U JP 19991985U JP H0612231 Y2 JPH0612231 Y2 JP H0612231Y2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- control signal
- electric circuit
- switching control
- switching
- 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.)
- Expired - Lifetime
Links
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Of Engines (AREA)
- Supercharger (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は速度制御装置の断線チェック装置に係り、特
に切換制御信号用電気回路の電圧をチェックし、切換制
御信号用電気回路の電圧が正常のバッテリ電圧と同等で
ない場合に、切換制御信号用電気回路が断線状態である
と判断し、内燃機関への燃料供給量を低減させて車両速
度を一定値に抑制し、確実な速度制御を果す速度制御装
置の断線チェック装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a disconnection check device for a speed control device, and in particular, it checks the voltage of a switching control signal electric circuit and confirms that the voltage of the switching control signal electric circuit is normal. If it is not equal to the battery voltage of, the switching control signal electric circuit is judged to be in a disconnection state, the fuel supply amount to the internal combustion engine is reduced, the vehicle speed is suppressed to a constant value, and reliable speed control is achieved. The present invention relates to a disconnection check device for a speed control device.
［従来の技術］ 車両が走行する際、車両速度が規制速度よりも過度に超
過すれば、内燃機関の破壊や重大な交通事故が発生する
惧れがあるため、速度オーバしたときには、自動的に車
両速度を抑制する速度制御装置が装備してあることが望
ましい。そのため、従来、規制速度を超過した際に、速
度検知機構あるいは過給圧検知機構によって燃料供給量
をカットし、速度を抑制している。[Prior Art] When a vehicle travels, if the vehicle speed exceeds the regulation speed excessively, the internal combustion engine may be destroyed or a serious traffic accident may occur. It is desirable that the vehicle be equipped with a speed control device that suppresses the vehicle speed. Therefore, conventionally, when the regulation speed is exceeded, the fuel supply amount is cut by the speed detection mechanism or the supercharging pressure detection mechanism to suppress the speed.
［考案が解決しようとする問題点］ ところで、従来の速度制御装置においては、ウエイスト
ゲート弁を開閉作動するアクチュエータを切換弁によっ
て動作させており、この切換弁の動作が停止することに
より速度制御が果されないものである。つまり、切換弁
と制御部とを連絡する切換制御信号用電気回路を、接続
不良事故や故意のカプラの取外し等の改造作業によって
断線状態とすることにより、前記切換弁の動作が停止
し、速度制御が果されない。[Problems to be Solved by the Invention] By the way, in the conventional speed control device, the actuator for opening and closing the waste gate valve is operated by the switching valve, and the speed control is performed by stopping the operation of the switching valve. It cannot be achieved. In other words, the switching control signal electrical circuit that connects the switching valve and the control unit is disconnected due to a modification work such as a connection failure accident or intentional removal of the coupler. There is no control.
このため、カプラの取外し等の簡単な作業によって容易
に断線状態とすることができ、速度規制が解除され、内
燃機関の破壊や重大な交通事故を惹起する惧れがあり、
車両走行時の安全性が低下するという不都合がある。Therefore, the disconnection can be easily made by a simple work such as removing the coupler, the speed regulation is released, and there is a fear that the internal combustion engine is destroyed or a serious traffic accident is caused.
There is an inconvenience that the safety during traveling of the vehicle is reduced.
［考案の目的］ そこでこの考案の目的は、上述不都合を除去するため
に、速度制御装置の切換弁に切換制御信号用電気回路を
接続して設けるとともに、エンジン回転数がアイドル回
数数未満となり且つ切換制御信号用電気回路の電圧が正
常なバッテリ電圧と同等でない場合に切換制御信号用電
気回路が断線状態であると判断した際に内燃機関への燃
料供給量を低減させて車両速度を低下させ車両速度を一
定値に制限すべく制御する制御部を設けたことにより、
事故や故意の改造作業によって切換制御信号用電気回路
の電圧が正常なバッテリ電圧と同等でない状態が生じた
場合に、切換制御信号用電気回路が断線状態であると判
断し、内燃機関への燃料供給量を低減させて車両速度を
一定値に抑制し、確実な速度制御を果し得る速度制御装
置の断線チェック装置を実現するにある。[Object of the Invention] Therefore, in order to eliminate the above-mentioned inconvenience, an object of the present invention is to provide an electric circuit for a switching control signal connected to the switching valve of the speed control device, and to make the engine speed less than the number of idle times. When the voltage of the switching control signal electric circuit is not equal to the normal battery voltage and it is determined that the switching control signal electric circuit is in the disconnection state, the fuel supply amount to the internal combustion engine is reduced to reduce the vehicle speed. By providing a control unit to control the vehicle speed to a constant value,
If the voltage of the switching control signal electric circuit is not equal to the normal battery voltage due to an accident or intentional modification work, it is determined that the switching control signal electric circuit is in a disconnected state, and the fuel for the internal combustion engine is fueled. An object of the present invention is to realize a disconnection check device of a speed control device that can reduce the supply amount to suppress the vehicle speed to a constant value and achieve reliable speed control.
［問題点を解決するための手段］ この目的を達成するためにこの考案は、過給機タービン
を迂回して排気通路に連通するバイパス通路途中に設け
たウエイストゲート弁と、このウエイストゲート弁を開
閉作動するアクチュエータと、吸気管圧力と排気管圧力
とのいずれか一方を前記アクチュエータに導入すべく切
換制御する切換弁とを有する速度制御装置において、前
記切換弁に切換制御信号用電気回路を接続して設けると
ともにエンジン回転数がアイドル回転数未満となり且つ
前記切換制御信号用電気回路の電圧が正常のバッテリ電
圧と同等でない場合に切換制御信号用電気回路が断線状
態であると判断した際には内燃機関への燃料供給量を低
減させて車両速度を低下させ車両速度を一定値に制限す
べく制御する制御部を設けたことを特徴とする。[Means for Solving the Problems] In order to achieve this object, the present invention provides a waste gate valve provided in the middle of a bypass passage bypassing a turbocharger turbine and communicating with an exhaust passage, and the waste gate valve. In a speed control device having an actuator that opens and closes and a switching valve that performs switching control so as to introduce one of intake pipe pressure and exhaust pipe pressure into the actuator, a switching control signal electric circuit is connected to the switching valve. When the engine speed is less than the idle speed and the voltage of the switching control signal electric circuit is not equal to the normal battery voltage, it is determined that the switching control signal electric circuit is open. It is characterized by providing a control unit for controlling the vehicle speed to a certain value by reducing the fuel supply amount to the internal combustion engine. And
［作用］ 上述の如く構成したことにより、エンジン回転数がアイ
ドル回転数未満となり且つ切換制御信号用電気回路の電
圧が正常なバッテリ電圧と同等でない場合には、切換制
御信号用電気回路が断線状態であると判断し、内燃機関
への燃料供給量を低減させて車両速度を一定値に抑制
し、確実な速度制御を果している。[Operation] With the above-described configuration, when the engine speed is less than the idle speed and the voltage of the switching control signal electric circuit is not equal to the normal battery voltage, the switching control signal electric circuit is in a disconnection state. Therefore, the fuel supply amount to the internal combustion engine is reduced, the vehicle speed is suppressed to a constant value, and reliable speed control is achieved.
［実施例］ 以下図面に基づいてこの考案の実施例を詳細に説明す
る。[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.
第１〜３図はこの考案の実施例を示すものである。図に
おいて、２は排気タービン式の過給機、４は吸気通路、
６は排気通路、８はコンプレッサ、１０はタービンであ
る。前記過給機２は、図示しない内燃機関に夫々連通す
る吸気通路４と排気通路６との途中に設けられる。前記
吸気通路４に臨ませてコンプレッサ８を設け、このコン
プレッサ８を排気通路６に臨ませたタービン１０により
回転し、給気を内燃機関に圧送するものである。1 to 3 show an embodiment of this invention. In the figure, 2 is an exhaust turbine type supercharger, 4 is an intake passage,
6 is an exhaust passage, 8 is a compressor, and 10 is a turbine. The supercharger 2 is provided in the middle of an intake passage 4 and an exhaust passage 6 which communicate with an internal combustion engine (not shown). A compressor 8 is provided facing the intake passage 4, and the compressor 8 is rotated by a turbine 10 facing the exhaust passage 6 to feed the supply air to an internal combustion engine under pressure.
この過給機２のタービン１０を迂回して排気通路６を連
通するバイパス通路１２を設ける。すなわち、タービン
１０の上流側排気通路６−１に設けた入口１４に開口始
端するバイパス通路１２を、タービン１０の下流側排気
通路６−２に設けた出口１６に開口終端させる。このバ
イパス通路１２には、入口１４を開閉するウエイストゲ
ート弁１８を設ける。A bypass passage 12 that bypasses the turbine 10 of the supercharger 2 and communicates with the exhaust passage 6 is provided. That is, the bypass passage 12, which has an opening beginning at the inlet 14 provided in the upstream exhaust passage 6-1 of the turbine 10, has an opening ending at the outlet 16 provided in the downstream exhaust passage 6-2 of the turbine 10. A waste gate valve 18 for opening and closing the inlet 14 is provided in the bypass passage 12.
ウエイストゲート弁１８は、アクチュエータ２０により
開成動作が制御される。アクチュエータ２０は、ダイヤ
フラム２２により圧力室２４を区画形成している。ダイ
ヤフラム２２は、ロッド２６により前記ウエイストゲー
ト弁１８に連結されている。このロッド２６を介してウ
エイストゲート弁１８を閉止させるべく、ダイヤフラム
２２を圧力室２４縮小方向に変位させる閉止バネ２８を
ダイヤフラム２２に弾圧して設ける。The opening operation of the waste gate valve 18 is controlled by the actuator 20. The actuator 20 defines a pressure chamber 24 with a diaphragm 22. The diaphragm 22 is connected to the waste gate valve 18 by a rod 26. In order to close the waste gate valve 18 via the rod 26, a closing spring 28 for displacing the diaphragm 22 in the contracting direction of the pressure chamber 24 is elastically provided on the diaphragm 22.
また、前記アクチュエータ２０の圧力室２４に導入通路
３０を介して電磁式切換弁３２を設け、この切換弁３２
には、前記コンプレッサ８の下流側吸気通路４−２に開
口始端する吸気管圧力導入用の第１通路３４を連絡させ
るとともに、前記タービン１０の上流側排気通路６−１
に開口始端する排気管圧力導入用の第２通路３６をも連
絡させる構成とする。Further, an electromagnetic switching valve 32 is provided in the pressure chamber 24 of the actuator 20 via the introduction passage 30, and the switching valve 32
Is connected to a first passage 34 for introducing an intake pipe pressure that opens at an opening end to a downstream intake passage 4-2 of the compressor 8, and an upstream exhaust passage 6-1 of the turbine 10 is connected.
The second passage 36 for introducing the exhaust pipe pressure, which starts at the opening, is also communicated with.
更に、前記切換弁３２には、切換制御信号用電気回路３
８により制御４０を接続する。このとき、制御部４０
は、車速信号や圧力信号、スロットル開度信号、回転数
信号、水温等の検知信号を入力し切換制御信号を前記切
換弁３２に出力するとともに、エンジン回転数Ｎがアイ
ドル回転数Ｎ1未満となり、且つ切換制御信号用電気回
路３８の電圧が正常なバッテリ電圧と同等でない場合
に、切換制御信号用電気回路３８が断線状態であると判
断し、内燃機関への燃料供給量を低減、例えば燃料噴射
量や噴射回数を低減させて車両速度を低下させ車両速度
を一定値に制限すべく制御する構成とする。Further, the switching valve 32 includes a switching control signal electric circuit 3
8 connects the control 40. At this time, the control unit 40
Receives a detection signal such as a vehicle speed signal, a pressure signal, a throttle opening signal, a rotation speed signal, and a water temperature, outputs a switching control signal to the switching valve 32, and the engine speed N becomes less than the idle speed N 1. When the voltage of the switching control signal electric circuit 38 is not equal to the normal battery voltage, it is determined that the switching control signal electric circuit 38 is in the disconnection state, and the fuel supply amount to the internal combustion engine is reduced, for example, the fuel. The injection amount and the number of injections are reduced to reduce the vehicle speed and control the vehicle speed to a constant value.
詳述すれば、第２図に示す如く、前記制御部４０は、回
転数を入力する入力回路４２と、ＣＰＵ（演算処理装
置）４４と、このＣＰＵ４４から引出される２本の電路
４６、４８と、この電路４６、４８途中に設けた抵抗５
０、５２と、一方の電路４６に接続されるとともにコレ
クタ側を他方の前記電路４８に点Ｐにおいて接続したト
ランジスタ５４とによって構成される。More specifically, as shown in FIG. 2, the control unit 40 includes an input circuit 42 for inputting the number of revolutions, a CPU (arithmetic processing unit) 44, and two electric paths 46, 48 drawn from the CPU 44. And a resistor 5 installed in the middle of this electric circuit 46, 48
0 and 52, and a transistor 54 connected to one electric path 46 and having a collector side connected to the other electric path 48 at a point P.
そして、カプラ５６を介して前記電路４を前記切換弁３
２に接続する。この切換弁３２は、前記吸気管圧力導入
用の第１通路３４に接続されるポートＡと、前記アクチ
ュエータ２０の圧力室２４に接続されるポートＢと、前
記排気管圧力導入用の第２通路３６に接続されるポート
Ｃとを有する。Then, the electric circuit 4 is connected to the switching valve 3 via the coupler 56.
Connect to 2. The switching valve 32 includes a port A connected to the first passage 34 for introducing the intake pipe pressure, a port B connected to the pressure chamber 24 of the actuator 20, and a second passage for introducing the exhaust pipe pressure. And port C connected to 36.
なお、符号５８はイグニションスイッチ、６０はヒュー
ズ、６２はバッテリである。Reference numeral 58 is an ignition switch, 60 is a fuse, and 62 is a battery.
次に作用について説明する。Next, the operation will be described.
ここで通常の速度制御装置の動作について詳述する。Here, the operation of the normal speed control device will be described in detail.
所定車両速度以下においては前記切換弁３２のポートＡ
とポートＢとが連絡されており、吸気管圧力が一定値を
越えた際に第１通路３４を介して吸気管圧力がアクチュ
エータ２０の圧力室２４に導入され、閉止バネ２８の付
勢力に抗して前記ウエイストゲート弁１８を開放させ
る。そして、前記バイパス通路１２内に排気ガスを流し
過給圧を低下させ、内燃機関の出力を低下させている。Below a predetermined vehicle speed, port A of the switching valve 32
And the port B are connected to each other, and when the intake pipe pressure exceeds a certain value, the intake pipe pressure is introduced into the pressure chamber 24 of the actuator 20 via the first passage 34, and the urging force of the closing spring 28 is resisted. Then, the waste gate valve 18 is opened. Then, the exhaust gas is caused to flow in the bypass passage 12 to reduce the supercharging pressure and reduce the output of the internal combustion engine.
また、車両速度が上昇して所定値を越えた際には、車速
信号入力により制御部４０から切換弁３２に切換制御信
号が出力され、切換弁３２のポートＡとポートＢとの連
絡を遮断するとともに、ポートＢとポートＣとを連絡さ
せる。このとき、ポートＣには吸気管圧力よりも強い排
気管圧力が第２通路３６を介して導入されることによ
り、前記ウエイストゲート弁１８が更に開放され、前記
タービン１０の回転を低下させるとともに、過給圧をも
低下させ、車両の減速を行っている。When the vehicle speed rises and exceeds a predetermined value, the control unit 40 outputs a switching control signal to the switching valve 32 by inputting the vehicle speed signal, and disconnects the communication between the port A and the port B of the switching valve 32. At the same time, the port B and the port C are connected. At this time, the exhaust pipe pressure stronger than the intake pipe pressure is introduced into the port C through the second passage 36, whereby the waste gate valve 18 is further opened, and the rotation of the turbine 10 is reduced. The supercharging pressure is also reduced to decelerate the vehicle.
次に第３図のフローチャートに沿って断線チェック動作
について説明する。Next, the disconnection check operation will be described with reference to the flowchart of FIG.
まず、図示しないスピードセンサにより内燃機関の回転
数をチェック１００し、エンジン回転数Ｎが、スピード
センサがＯＦＦ状態となり得るアイドル回転数Ｎ1未
満、つまりアイドル回転数Ｎ1よりも小であるか否かを
判断１０２する。そして、ＮＯの場合には正規の燃料供
給、例えば図示しないインジェクタに制御信号を出力し
て燃料噴射１０４を行い、ＹＥＳの場合には、前記切換
制御信号用電気回路３８を途中に設けた点Ｐにおいて電
圧チェック１０６を行う。また、点Ｐにおける電圧がバ
ッテリ６２のバッテリ電圧と同等か否かの判断１０８を
行い、ＹＥＳの場合には上述と同様の正規の燃料供給、
例えば燃料噴射１０４を行い、ＮＯの場合には供給制御
信号用電気回路３８が遮断状態にあると判断し、燃料供
給量を低下させるべく例えば燃料の噴射量や噴射回数を
減少１１０させ、車両速度が一定値を越えるのを阻止す
る減速制御を行う。First checks 100 the rotational speed of the internal combustion engine by the speed sensor (not shown), whether the engine speed N, the idling speed N less than 1 speed sensor can become an OFF state, is smaller than that is the idling speed N 1 not Then, it is determined 102. In the case of NO, a regular fuel supply, for example, a control signal is output to an injector (not shown) to perform the fuel injection 104, and in the case of YES, the switching control signal electric circuit 38 is provided at a point P. In, the voltage check 106 is performed. Further, it is judged whether the voltage at the point P is equal to the battery voltage of the battery 62, and if YES, the regular fuel supply similar to the above,
For example, the fuel injection 104 is performed, and in the case of NO, it is determined that the supply control signal electric circuit 38 is in the cutoff state, and the fuel injection amount or the number of injections is decreased 110 to reduce the fuel supply amount, and the vehicle speed The deceleration control is performed to prevent the value from exceeding a certain value.
また、上述の断線チェック動作の際に、電圧チェック１
０６用の電圧値を下表に示す。In addition, during the above disconnection check operation, the voltage check 1
The voltage values for 06 are shown in the table below.
これにより、制御部と切換弁とを連絡する切換制御信号
用電気回路途中に事故や故意の改造作業によって外的付
加が加わった場合には、点Ｐにおいて正常なバッテリ電
圧と同等の電圧を検知することができないので、切換制
御信号用電気回路が断線状態であると判断し、制御部に
よって燃料供給量を低減させ、速度制御を行い、車両速
度を一定値に制限することができる。すなわち、判断後
の内燃機関の駆動時には、制御部が燃料供給量を低減す
べく制御することとなり、車両速度を一定値に制限する
ものである。 As a result, when an external addition is applied due to an accident or intentional modification work in the middle of the switching control signal electric circuit that connects the control unit and the switching valve, a voltage equal to the normal battery voltage is detected at the point P. Therefore, it is possible to determine that the switching control signal electric circuit is in a disconnection state, reduce the fuel supply amount by the control unit, perform speed control, and limit the vehicle speed to a constant value. That is, when the internal combustion engine is driven after the determination, the control unit controls to reduce the fuel supply amount and limits the vehicle speed to a constant value.
また、確実な速度制御を行うことができ、車両走行時の
車両速度の超過を防止し、安全性を向上させることがで
き、実用上有利である。Further, it is possible to perform reliable speed control, prevent the vehicle speed from being exceeded when the vehicle is traveling, and improve safety, which is practically advantageous.
更に、この考案の速度制御装置を燃料噴射制御装置に適
用する場合は、内蔵されるマイクロコンピュータのソフ
トの簡単な変更のみにより実現でき、コストを低廉とし
得て、経済的に有利である。Further, when the speed control device of the present invention is applied to the fuel injection control device, it can be realized only by a simple change of the software of the built-in microcomputer, the cost can be reduced, and it is economically advantageous.
［考案の効果］ 以上詳細に説明した如くこの考案によれば、速度制御装
置の切換弁に切換制御信号用電気回路を接続して設ける
とともに、エンジン回転数がアイドル回転数未満となり
且つ切換制御信号用電気回路の電圧が正常なバッテリ電
圧と同等でない場合に切換制御信号用電気回路が断線状
態であると判断した際に内燃機関への燃料供給量を低減
させて車両速度を低下させ車両速度を一定値に制限すべ
く制御する制御部を設けたので、事故のみならず故意の
改造作業によって切換制御信号用電気回路の電圧が変化
した際に、切換制御信号用電気回路が断線状態であると
確実に判断することができ、内燃機関への燃料供給量を
低減させて車両速度を一定値に抑制し、確実な速度制御
を果し得る。[Effect of the Invention] As described in detail above, according to the present invention, the switching control signal electric circuit is connected to the switching valve of the speed control device, and the engine speed becomes less than the idle speed and the switching control signal is generated. When it is determined that the switching control signal electric circuit is in the disconnection state when the voltage of the electric circuit for use is not equal to the normal battery voltage, the amount of fuel supplied to the internal combustion engine is reduced to reduce the vehicle speed to reduce the vehicle speed. Since the control unit that controls to limit to a certain value is provided, when the voltage of the switching control signal electric circuit is changed not only by an accident but also by the intentional modification work, the switching control signal electric circuit is in a disconnection state. It is possible to make a reliable judgment, reduce the amount of fuel supplied to the internal combustion engine, suppress the vehicle speed to a constant value, and perform reliable speed control.
また、車両速度を一定値に制限することにより、車両走
行時の安全性を向上させることができ、実用上有利であ
る。Further, by limiting the vehicle speed to a constant value, it is possible to improve the safety when the vehicle is running, which is practically advantageous.
更に、この考案の制御装置を燃料噴射装置に適用する場
合は、マイクロコンピュータのソフトの簡単な変更によ
り実現でき、コストを低廉とし得て、経済的に有利であ
る。Further, when the control device of the present invention is applied to the fuel injection device, it can be realized by a simple change of the software of the microcomputer, the cost can be reduced, and it is economically advantageous.
第１〜３図はこの考案の実施例を示し、第１図は速度制
御装置の断線チェック装置の概略説明図、第２図は制御
部の概略図、第３図は断線チェック動作を示すフローチ
ャートである。 図において、２は排気タービン式の過給機、４は吸気通
路、６は排気通路、８はコンプレッサ、１０はタービ
ン、１２はバイパス通路、１８はウエイストゲート弁、
２０はアクチュエータ、２２はダイヤフラム、２４は圧
力室、３０は導入通路、３２は電磁式切換弁、３４は第
１通路、３６は第２通路、３８は切換制御信号用電気回
路、４０は制御部、４２は入力回路、４４はＣＰＵ、４
６、４８は電路、５０、５２は抵抗、５４はトランジス
タ、５６はカプラ、６２はバッテリである。1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic explanatory view of a disconnection check device of a speed control device, FIG. 2 is a schematic diagram of a control unit, and FIG. 3 is a flow chart showing a disconnection check operation. Is. In the figure, 2 is an exhaust turbine type supercharger, 4 is an intake passage, 6 is an exhaust passage, 8 is a compressor, 10 is a turbine, 12 is a bypass passage, 18 is a waste gate valve,
Reference numeral 20 is an actuator, 22 is a diaphragm, 24 is a pressure chamber, 30 is an introduction passage, 32 is an electromagnetic switching valve, 34 is a first passage, 36 is a second passage, 38 is a switching control signal electric circuit, and 40 is a control unit. , 42 is an input circuit, 44 is a CPU, 4
Reference numerals 6 and 48 are electric paths, 50 and 52 are resistors, 54 is a transistor, 56 is a coupler, and 62 is a battery.
Claims (1)
するバイパス通路途中に設けたウエイストゲート弁と、
このウエイストゲート弁を開閉作動するアクチュエータ
と、吸気管圧力と排気管圧力とのいずれか一方を前記ア
クチュエータに導入すべく切換制御する切換弁とを有す
る速度制御装置において、前記切換弁に切換制御信号用
電気回路を接続して設けるとともにエンジン回転数がア
イドル回転数未満となり且つ前記切換制御信号用電気回
路の電圧が正常のバッテリ電圧と同等でない場合に切換
制御信号用電気回路が断線状態であると判断した際には
内燃機関への燃料供給量を低減させて車両速度を低下さ
せ車両速度を一定値に制限すべく制御する制御部を設け
たことを特徴とする速度制御装置の断線チェック装置。1. A waste gate valve provided in the middle of a bypass passage that bypasses the turbocharger turbine and communicates with the exhaust passage,
In a speed control device having an actuator that opens and closes the waste gate valve and a switching valve that performs switching control to introduce one of intake pipe pressure and exhaust pipe pressure into the actuator, a switching control signal is sent to the switching valve. If the engine speed is less than the idle speed and the voltage of the switching control signal electric circuit is not equal to the normal battery voltage, the switching control signal electric circuit is in a disconnected state. When the determination is made, a disconnection check device for a speed control device is provided, which is provided with a control unit for controlling the amount of fuel supplied to the internal combustion engine to reduce the vehicle speed and limit the vehicle speed to a constant value. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985199919U JPH0612231Y2 (en) | 1985-12-28 | 1985-12-28 | Disconnection check device for speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985199919U JPH0612231Y2 (en) | 1985-12-28 | 1985-12-28 | Disconnection check device for speed control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62111947U JPS62111947U (en) | 1987-07-16 |
| JPH0612231Y2 true JPH0612231Y2 (en) | 1994-03-30 |
Family
ID=31161989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985199919U Expired - Lifetime JPH0612231Y2 (en) | 1985-12-28 | 1985-12-28 | Disconnection check device for speed control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612231Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625034U (en) * | 1979-08-02 | 1981-03-07 | ||
| JPS58165232U (en) * | 1982-04-30 | 1983-11-02 | 日野自動車株式会社 | Safety device for turbocharger |
| JPS59165841A (en) * | 1983-03-11 | 1984-09-19 | Toyota Motor Corp | Car speed restricting device |
| JPS60189442U (en) * | 1984-05-29 | 1985-12-16 | スズキ株式会社 | vehicle speed limiter |
-
1985
- 1985-12-28 JP JP1985199919U patent/JPH0612231Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62111947U (en) | 1987-07-16 |
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