JPS59226250A - Apparatus for controlling idling speed of engine - Google Patents

Apparatus for controlling idling speed of engine

Info

Publication number
JPS59226250A
JPS59226250A JP10045283A JP10045283A JPS59226250A JP S59226250 A JPS59226250 A JP S59226250A JP 10045283 A JP10045283 A JP 10045283A JP 10045283 A JP10045283 A JP 10045283A JP S59226250 A JPS59226250 A JP S59226250A
Authority
JP
Japan
Prior art keywords
control
signal
rotation speed
engine
speed
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.)
Pending
Application number
JP10045283A
Other languages
Japanese (ja)
Inventor
Masahiko Matsuura
松浦 正彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP10045283A priority Critical patent/JPS59226250A/en
Publication of JPS59226250A publication Critical patent/JPS59226250A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D31/00Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001Electric control of rotation speed
    • F02D31/002Electric control of rotation speed controlling air supply
    • F02D31/003Electric control of rotation speed controlling air supply for idle speed control

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To atain stable operation of an engine, by interrupting feedback control when a phenomenon that the engine speed gets out of an insensitivity zone temporarily and is returned immediately to an aimed speed is caused, and executing feedback control when operation of loads is stopped and a fairly great deviation between the actual engine load and the aimed speed is caused resultantly. CONSTITUTION:A control valve is disposed in a by-pass passage by-passing a throttle valve in an intake passage, and it is controlled by a feedback control means for controlling the same on the basis of the deviation between the actual engine speed and an aimed idling speed or an open-loop control means which produces a prescribed control signal by the intermediary of a control signal changing means. The control signal changing means is so designed to select the signal from the feedback control means as the signal to be applied to the control valve when output signal of a load detecting means for detecting whether external loads such as a cooler is in operation or not is given to the control signal changing means. On the other hand, when the engine speed is converged within a prescribed range, that is, when the engine speed has entered into an insensitivity zone, the control signal changing means selects the signal from the open-loop control means as the signal to be applied to the control valve.

Description

【発明の詳細な説明】 (産業上の利用分野〕 本発明は、アイドル運転時にエンジン回転数を目標アイ
ドル回転数に収束させるためのアイドル回転制御装置に
関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an idle rotation control device for converging engine rotation speed to a target idle rotation speed during idle operation.

(従来技術) 自動車において、エンジンがアイドリング状態にあると
き、安定したアイドル回転f得るためにアイドル回転制
御を行うことが知られている。この制御は、エンジンの
回転数全検出し、これを予め設定した目標アイドルI!
:+1転数と比較して、吸入空気量をフィードバック制
御するものであり、回転数が目標アイドル回転数を越え
ると吸入空気量全減少させ、回転数がl−1標ア・fド
ル回転数より低下したときは、吸入空気量を増大するよ
うに制御される。しかし、アイドル連転中において、エ
ンジンの回転数には′畠に成る程度の回転数変動があり
、この震動はフィードバック制御によっても解鎖するこ
とができず、吸入空気量のフィードバック制御を行なう
とかえってハンチングが生じて変動幅が大きくなるとい
う不具合が生じる。従って、フィードバック制御によっ
て回転数変動がそれ以上狭めることが不用能な範囲内に
収束した場合、すなわち回転数変動が不感帯領域に入る
とフィードバック制御を停止し、通常の吸入突気兇の制
御すなわちオープン制御に切替え制御の安定を図るよう
にしている。(%開昭ss−qqg乙2g疹照)しかし
、従来ではエンジン回転数がこの不感帯領域外になった
ときは常に、例えば単発失火のように一時的に回転が落
ち込んでもすぐ回転が上昇復帰するよう力ときにもフィ
ートノクック制御が行なわれ、かえって制御が不安定に
なるという不都合が生じる。このように、実際のエンジ
ンのアイドル回転制御においては、回転が不感帯領域外
にあるときであっても絶えずフィートノ々ツク制(i1
=11’z行なうのがよいのではなく、クーラ等のエン
ジンの外部負荷が作動する時、及び停止するときのよう
に回転Vこ変動が生じやすいときにのみ行うのが回転の
安定性にとって好ましいものである。
(Prior Art) It is known that idle rotation control is performed in an automobile in order to obtain a stable idle rotation f when the engine is in an idling state. This control detects the entire engine rotation speed and sets this to a preset target idle I!
:+1 Compared to the rotation speed, the intake air amount is feedback-controlled, and when the rotation speed exceeds the target idle rotation speed, the intake air amount is completely reduced, and the rotation speed is l-1 standard A/f rotation speed. When the amount of intake air decreases further, the amount of intake air is controlled to be increased. However, during continuous idling, the engine speed fluctuates to a considerable extent, and this vibration cannot be resolved even by feedback control. A problem arises in that hunting occurs and the fluctuation range increases. Therefore, when the rotation speed fluctuation converges within a range that cannot be further narrowed by feedback control, that is, when the rotation speed fluctuation enters the dead zone region, the feedback control is stopped and the normal suction thrust control is performed. The control is switched to stabilize the control. However, in the past, whenever the engine speed was outside of this dead band range, even if the engine speed dropped temporarily, such as due to a single misfire, the engine speed would immediately return to normal. Feet knock control is also carried out when there is a sudden force, resulting in an inconvenience that the control becomes unstable. In this way, in actual engine idle rotation control, foot knock control (i1
=11'z It is not a good idea to do this, but it is preferable for rotational stability to do it only when the engine's external load such as a cooler is operating or when it is stopped, and when rotational fluctuations are likely to occur. It is something.

(本発明の目的) 従って、本発明の目的は、不感帯領域ではフ・イードパ
ック制御を停止するように々つたアイドル回転制御装置
において、さらに安定し7たアイドル回転を与えること
のできるアイドル回転制御装置f提供する仁とである。
(Object of the present invention) Therefore, an object of the present invention is to control idle rotation that can provide more stable idle rotation in an idle rotation control device that has been used to stop feed pack control in a dead zone region. The device f is provided by Ren.

(本発明の構成) 上記目的を達成するため、本発明は以下のように構成さ
れる。すなわち、本発明は、エンジンの回転数全検出す
る回転数検出手段と、クーラ等の外部負荷の作動及び停
止を検出する負荷検出手段と、吸入空気1(i−制御す
る制御弁と、エンジン回転数と目標アイドル回転数とを
比較し回転数が目標アイドル回転数に収束するように前
記制御弁に対し、て制御信号を出力するフィードバック
制御手段と、オープン制御が行なわれる場合IC前記制
御弁に対し制御信号を出力するオープン制御手段と、前
記外部負荷の作動及び停止が生じたとき前記制御弁に対
する信号全フィード/ぐツク制御手段からの信号に切替
えエンジン回転数がH[定範囲内に収束した時点で制御
弁に対する信号をオープン制御手段からの信号に切替え
る制御信号切替手段ケ備えた仁とを特徴とする。
(Configuration of the present invention) In order to achieve the above object, the present invention is configured as follows. That is, the present invention includes a rotation speed detection means for detecting the entire engine rotation speed, a load detection means for detecting operation and stoppage of an external load such as a cooler, a control valve for controlling the intake air 1 (i-control), and a rotation speed detection means for detecting the entire engine rotation speed. feedback control means for comparing the number of rotations with a target idle rotation speed and outputting a control signal to the control valve so that the rotation speed converges to the target idle rotation speed; An open control means outputs a control signal, and when the external load starts and stops, the signal is switched to the signal from the full feed/pull control means to the control valve, so that the engine speed reaches H [converges within a certain range]. The present invention is characterized by comprising a control signal switching means for switching the signal to the control valve to a signal from the open control means at the time when the control valve is opened.

本発明の構成を第1図?参照して説明する。フィードバ
ック制御手段は、回転数検出手段からの信号に工や、目
標アイドル回転数との差に応じて所定の制御信号を制御
信号切替手段?介して制御弁に対して出力する。回転数
変動が/J・、さくなって、変動中が所定範囲内に収束
すると、すなわち不感帯領域内での変動に収束すると、
制御弁への信号は制御信号切替手段によってオープン制
御手段か、らの信号に切替えられる。クーラ等の外部負
荷の作動又は停止があると、それは、負荷検出手段によ
り検出され、1til制御1に号切替+段はオーブン制
@1手段からの信号をフィードバック97す熱手段から
の信号に切り替える。外部負荷の作動又は停止時にフィ
ードバック制御手段からの信号が制御弁に入力されてい
るときには負荷の作動停止があってもその信号は優絖さ
れる。その後、回転e、変動がH丁定範囲内に収束した
ら再びオープン制御に切替えられる。
Figure 1 shows the configuration of the present invention? Refer to and explain. The feedback control means converts the signal from the rotational speed detection means into a predetermined control signal according to the difference between the signal from the rotational speed detection means and the target idle rotational speed. output to the control valve via the When the rotation speed fluctuation decreases by /J・ and the fluctuation converges within a predetermined range, that is, when the fluctuation converges within the dead zone region,
The signal to the control valve is switched to a signal from the open control means by the control signal switching means. When an external load such as a cooler is activated or stopped, it is detected by the load detection means, and the signal from the oven control @1 means is switched to the signal from the heating means. . When the signal from the feedback control means is input to the control valve when the external load is activated or deactivated, the signal is maintained even if the external load is activated or deactivated. Thereafter, when the rotation e and the fluctuation converge within the H-predetermined range, the control is switched to open control again.

(本発明の効果) 本発明では、1時的に不黒帯を脱し、すぐに目標回転数
に復帰する、例えば単発失火のような現象が生じた場合
にはフィードバックftjli @は行なわず、目標ア
イドル回転数との太キ汝ずれが生じる負荷の作動停止時
にフ・イードパツクff1i御會行なうようにしている
。ζハによって、無用な修正動作ケ行なうことなく、安
定したアイドル11転制@を行なうことができる。
(Effects of the Present Invention) In the present invention, when a phenomenon such as a single misfire occurs, in which the engine temporarily escapes from the black belt and immediately returns to the target rotation speed, feedback ftjli@ is not performed and the engine speed returns to the target rotation speed. The feed pack ff1i is adjusted when the load stops operating, which causes a large deviation from the idle speed. By ζc, stable idle 11 transfer can be performed without unnecessary correction operations.

実施例 a)システムの構成 第2図を参照すれば、エンジン本体lOは内部をピスト
ン12が摺動するシリンダ14’r山するシリンダブロ
ック16と、シリンダ14の上部に取付けられて燃暁室
18を形成するシリンダヘッド20とを備えている。シ
リンダヘッド20)こは吸気管22及び排気t24がそ
れぞれ接続式れる。
Embodiment a) System configuration Referring to FIG. 2, the engine main body 10 includes a cylinder block 16 mounted on a cylinder 14'r in which a piston 12 slides, and a combustion chamber 18 attached to the upper part of the cylinder 14. A cylinder head 20 is provided. Cylinder head 20) The intake pipe 22 and exhaust pipe 24 are connected to each other.

さらに、シリンダヘッド20には、上記数気管22及び
排気管24に連通する吸気通路26の一部及び排気通路
28の一部が形成される。吸気酒路26の燃焼室18へ
の開口部すなわち、吸気デート80には吸気弁82が、
排気通路28の燃焼室18への開口部すなわち排気ポー
ト84には排気弁86がそnぞれ組み合わされる。吸気
通路26の先端にはエアクリーナ88が設けられる。
Further, in the cylinder head 20, a part of an intake passage 26 and a part of an exhaust passage 28, which communicate with the above-mentioned trachea 22 and exhaust pipe 24, are formed. An intake valve 82 is located at the opening of the intake passage 26 to the combustion chamber 18, that is, at the intake date 80.
Exhaust valves 86 are combined with the openings of the exhaust passage 28 into the combustion chamber 18, that is, the exhaust ports 84, respectively. An air cleaner 88 is provided at the tip of the intake passage 26.

その下流側には空気ttF餉するエアフローメータ40
が設けられ、さらにその下流には、スロットル弁42が
それぞれ設けられている。吸気通路26 ノe気i=−
) 8 (1近くには燃焼噴射ノズル44が配置されて
いる。また、吸気通路26には、スロットル弁42をバ
イパスするバイハス通路46が設けられ、該通路46に
は、通路46内ケ流通する空気量を調節する比例ソレノ
イド弁48が設置されている。さらに、吸気通路26に
は、スロットル弁42の開度全検出するスロットル弁開
度センサ50が設けられている。
On the downstream side, there is an air flow meter 40 for controlling air ttF.
are provided, and further downstream thereof, a throttle valve 42 is provided. Intake passage 26 noe air i=-
) 8 (A combustion injection nozzle 44 is arranged near 1. In addition, the intake passage 26 is provided with a bypass passage 46 that bypasses the throttle valve 42. A proportional solenoid valve 48 for adjusting the amount of air is installed.Furthermore, a throttle valve opening sensor 50 for detecting the full opening of the throttle valve 42 is installed in the intake passage 26.

燃料噴射ノズル44及び比例ソレノイド弁48を制御す
るために、好1しくはマイクロコンピータで構成される
制御ユニット52か設置される。
In order to control the fuel injection nozzle 44 and the proportional solenoid valve 48, a control unit 52, preferably consisting of a microcomputer, is provided.

本例の装置はエンジン回転数ケ検出する回転数センサ5
4を備えておp、このセンサ54からの信号は制御ユニ
ット52に入力される。制御二二ツ)52にはエアフロ
ーメータ40及びスロットル開度センサ50からの信号
も入力される。また、冷却水温を検出する水温センサ5
6からの信号も制御ユニット52゛に入力づれる。さら
に、制佃1ユニット52には、クーラ等の各種エンジン
付属品すなわち、エンジン負荷58の0N−OFF信号
が入力される。
The device in this example is a rotational speed sensor 5 that detects the engine rotational speed.
The signal from the sensor 54 is input to the control unit 52. Signals from the air flow meter 40 and the throttle opening sensor 50 are also input to the control unit 52. In addition, a water temperature sensor 5 that detects the cooling water temperature
The signal from 6 is also input to the control unit 52'. Further, the ON-OFF signal of various engine accessories such as a cooler, that is, the engine load 58 is inputted to the control unit 1 52 .

b)制御フロー 上記システムの制御7行なうに当って、本例では、メイ
ングログラム及び割込み処理プログラムが用いられる。
b) Control Flow To control the system described above, in this example, a main program and an interrupt processing program are used.

第3図にメイングログラムのフローチャートが示されて
いる。メイングログラムはクーラ、パワーステアリング
、電気負荷等の外部負荷の作動停止?検出してその負荷
の大きさに応じた目標アイドル回転数を設定する。ます
、メイングログラムでは各変数、メモリ等がイニシャラ
イズされる(S、)。次に外部負荷の作動状態を検出し
くS、) 、負荷に応じて目標アイドル回転数を設定す
る(S3)。割込プログラムは第を図にそのフローチャ
ートが示されており、所定のタイミングでメイングログ
ラムに割込んで実行されるようになっており、不感帯巾
全最適状態に保持し、回動数変動巾の大きさ、及び負荷
の作動状態に応じてフィードバック制御とオープン制御
との切替えを行なう。このプログラムでは1ず、エンジ
ンの周期計測が行々われる(SS1)。次にこの周期に
基づいて回転数が算出さする(Ss、)。次に前回本ル
ーチン全実行したときから、今回本ルーチン全実行する
までの間に、負猜の変化があったかどうかすなわち、外
部負荷の作動あるいは、停止があったかどうかが判断さ
れる(SS、)。負荷変化があつfc場合には、フィー
ドバック制御が開始されるとともに(SS4)、その負
荷変化はどのよう々変化か、すなわち、外部負荷がON
からOFFになったのかOFFからONになったのかが
検出され(S55)、それに応じて、また負荷の種類に
応じて見込み補正が行なわれる(S56)。負荷変化が
なかった場合には、次にメイングログラムにより定めら
fした目標アイドル回転数と上記舞、出された回転数と
の差に応じて制御信号を出力し比例ソレノイド弁48を
作動させて吸入室気量を制御するフィードバック制御が
行なわれているかどうかの判断が行なわれる( 33.
)。フィードバック制御が行なわれていない場合、すな
わち、回転変動が不感帯内にあって、オープン制御が行
なわれている場合には回転数変動の大きさにより、不感
帯巾の適正化が行ガわれる。すなわち、複数の回転変動
のピークを検出しく5S8) 、その複数のピーク値の
差の平均から回転数センサΔnを検出しくSS、) 、
その変動中△nに所定値αを加えた値Kを不感帯とする
(SS、o)。従って、不感帯巾には回転数センサ△n
の変化に応じて本グロダラムの実行ごとに適正な値に変
更される。フィードバックftfli御が行なわれてい
る場合には、回転変動の複数のピーク値の平均値から回
転変動中、ΔNが検出される(SSI 1.5512)
。そして、その回転変動ΔNか不感帯領域内にあるかど
うかすなわち、ΔN≦Kかどうかが判断され(S51.
)、不感帯領域内にある場合にはフィードバック制御は
停止されオープン制御に切替えられる(SS、8)。不
感帯領域外、すなわち、ΔN>Kである場合には、0偵
アイドル回転数と比較し、その差に応じてフィードバッ
ク制御が行なわれる(SS12.5S2o1S52.)
。すなわち、回転数が目標回転数よp^い場合には、制
御値を減少して回転数を下降させる出力処理が、回転数
が目標回転数より低い場合には回転数を増加させる出力
処理が行なわれる。
A flowchart of the main program is shown in FIG. Does the main program stop the operation of external loads such as coolers, power steering, electrical loads, etc.? The system detects the load and sets a target idle speed according to the size of the load. First, in the main program, each variable, memory, etc. are initialized (S,). Next, the operating state of the external load is detected (S), and a target idle rotation speed is set according to the load (S3). The flowchart of the interrupt program is shown in Figure 1, and it is executed by interrupting the main program at a predetermined timing. Switching between feedback control and open control is performed depending on the magnitude of the load and the operating state of the load. In this program, first, engine cycle measurement is performed (SS1). Next, the rotation speed is calculated based on this period (Ss,). Next, it is determined whether there has been a change in the load, that is, whether the external load has been activated or stopped between the time when this routine was fully executed last time and the time when this routine is fully executed this time (SS). If there is a load change fc, feedback control is started (SS4), and how does the load change change?
It is detected whether the switch has turned OFF or has turned ON from OFF (S55), and an estimated correction is performed in accordance with the detection and the type of load (S56). If there is no load change, then a control signal is output in accordance with the difference between the target idle rotation speed determined by the main program and the above-mentioned rotation speed, and the proportional solenoid valve 48 is operated. It is determined whether feedback control is being performed to control the suction chamber air volume (33.
). When feedback control is not being performed, that is, when the rotational speed fluctuation is within the dead zone and open control is being performed, the dead zone width is optimized depending on the magnitude of the rotational speed fluctuation. That is, to detect the peaks of a plurality of rotational fluctuations 5S8), to detect the rotational speed sensor Δn from the average of the differences between the plurality of peak values SS,),
During the fluctuation, a value K obtained by adding a predetermined value α to Δn is defined as a dead zone (SS, o). Therefore, the dead band width is the rotation speed sensor △n
It is changed to an appropriate value each time this Grodarum is executed according to changes in . When feedback ftfli control is performed, ΔN is detected during rotation fluctuation from the average value of multiple peak values of rotation fluctuation (SSI 1.5512)
. Then, it is determined whether the rotational fluctuation ΔN is within the dead zone region, that is, whether ΔN≦K (S51.
), if it is within the dead zone region, feedback control is stopped and switched to open control (SS, 8). If it is outside the dead band region, that is, ΔN>K, it is compared with the zero idle rotation speed, and feedback control is performed according to the difference (SS12.5S2o1S52.)
. That is, when the rotation speed is p^ higher than the target rotation speed, output processing is performed to decrease the rotation speed by decreasing the control value, and when the rotation speed is lower than the target rotation speed, output processing is performed to increase the rotation speed. It is done.

C)制御例 第5図に示されるように、外部負荷がOFFの状態にあ
って、回転数がそのときの目標回転数(線aで示される
レベル)に収束している場合には、オープン制御が行な
われている。T)の時点で特定の外部負荷がONになる
と、見込み袖正によp制御量は増大する。これによって
、回転数も増大するが回転変動も増大する。本例では負
荷の作動と同時にフィードバック制御が開始される。
C) Control example As shown in Fig. 5, when the external load is off and the rotation speed has converged to the target rotation speed at that time (the level shown by line a), the open control is in place. When a specific external load is turned on at time T), the p control amount increases due to the expected error. This increases the rotational speed, but also increases the rotational fluctuation. In this example, feedback control is started at the same time as the load is activated.

その後、フィードバック制御によp丁2  時点で回転
変動がそのときの目標アイドル回転数(線すで示される
レベル)の不感帯領域内での変動に収束するとすなわち
ΔN≦にになるとフィードバック制御が停止されオーブ
ン卵制御に切替えられる。そ[て15時点で負荷がOF
Fになると、同様にフィードバック制御に切替えられ、
その後、■4  時点でΔN≦にになると碧びオープン
制御に切替えられる。また、回転変動ΔNの検出に当っ
ては、複数のピーク値の平均を用いるようにしているた
め、単発失火のような一時的な回転変動のSOには制御
の切潜は行々われ号い。従って、本例の制御によれば負
荷変動にも十分に対応し得る安定したアイドル回転制御
を行うことができる。
Thereafter, when the rotational fluctuations converge to the fluctuations within the dead band region of the target idle rotational speed (the level indicated by the line) at point 2 due to feedback control, that is, when ΔN≦, the feedback control is stopped. Switched to oven egg control. Then, at the 15th point, the load is turned off.
When it reaches F, it switches to feedback control in the same way,
Thereafter, when ∆N≦ at time point (■4), the control is switched to blue open control. In addition, since the average of multiple peak values is used to detect the rotational fluctuation ΔN, there is no need to intervene in the control for temporary rotational fluctuations such as single misfires. . Therefore, according to the control of this example, stable idle rotation control that can sufficiently cope with load fluctuations can be performed.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明のクレーム対応図、第2図は本発明に
従う装置のシステム構成図、第3図及び第9図ば発明の
l実施例のフローチャート、抛5図は、本発明のl実施
例に係るタイムチャートである。 符号の説明 lO・・・エンジン本体、12・・・ピストン、14・
・・シリンダ、26・・・吸気通路、28・・・排気通
路、88・・・エアクリーナ、40・・・エアフローメ
ーク、42・・・ス四ットル弁、44・・・燃料噴射ノ
ズル、48−・比例ソレノイド弁、50・・・スロット
ル弁開度センサ、52・・・制御ユニット、54・・・
回転数¥ンサ、56・・・水温センサ。 特許出願人 東洋工業株式会社
FIG. 1 is a claim correspondence diagram of the present invention, FIG. 2 is a system configuration diagram of an apparatus according to the present invention, FIGS. 3 and 9 are flowcharts of an embodiment of the invention, and FIG. It is a time chart concerning an example. Explanation of symbols 1O...Engine body, 12...Piston, 14...
...Cylinder, 26...Intake passage, 28...Exhaust passage, 88...Air cleaner, 40...Air flow make, 42...Strottle valve, 44...Fuel injection nozzle, 48- - Proportional solenoid valve, 50... Throttle valve opening sensor, 52... Control unit, 54...
Rotation speed sensor, 56...Water temperature sensor. Patent applicant: Toyo Kogyo Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] エンジンの回転数を検出する回転数検出手段と、クーラ
等の外部負荷の作動及び停止を検出する負荷検出手段と
、吸入空気量全減少する制御弁と、エンジン回転数と目
杉貞アイドル回転数とを比較し回転数が1松アイドル回
転数に収束するように前記制御弁に対しで118制御伯
号を出力するフィードバック制御手段と、オー2°ン制
御が行なわれる場合に前記制御弁に対し制御信号を出力
するオーブン制御手段と、Sit記外部負荷の作動及び
停止が生じたとき前記制御弁に対する(i号をフィード
バック制御手段からの信号に切習えエンジン回転数か所
定範囲内に収束した時点で制御弁に対する信号をオーブ
ン制御手段からの信号に切替える制御信号切替手段全備
えたことを特徴とするエンジンのアイドル回転制御装置
A rotation speed detection means for detecting the engine rotation speed, a load detection means for detecting the operation and stop of an external load such as a cooler, a control valve that completely reduces the amount of intake air, and an engine rotation speed and an idle rotation speed. feedback control means for outputting a 118 control number to the control valve so that the rotation speed converges to the idle rotation speed of 1 pin; Oven control means outputs a control signal, and when the external load starts and stops, the control valve (i) is used as a signal from the feedback control means. What is claimed is: 1. An engine idle rotation control device comprising control signal switching means for switching a signal to a control valve to a signal from an oven control means.
JP10045283A 1983-06-06 1983-06-06 Apparatus for controlling idling speed of engine Pending JPS59226250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10045283A JPS59226250A (en) 1983-06-06 1983-06-06 Apparatus for controlling idling speed of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10045283A JPS59226250A (en) 1983-06-06 1983-06-06 Apparatus for controlling idling speed of engine

Publications (1)

Publication Number Publication Date
JPS59226250A true JPS59226250A (en) 1984-12-19

Family

ID=14274301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10045283A Pending JPS59226250A (en) 1983-06-06 1983-06-06 Apparatus for controlling idling speed of engine

Country Status (1)

Country Link
JP (1) JPS59226250A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6444339U (en) * 1987-09-10 1989-03-16
DE4030764A1 (en) * 1989-09-29 1991-04-11 Fuji Heavy Ind Ltd CONTROL SYSTEM FOR CONTROLLING THE IDLE SPEED OF AN INTERNAL COMBUSTION ENGINE
JPH05263690A (en) * 1992-03-23 1993-10-12 Mitsubishi Electric Corp Idling control device of engine
ES2267359A1 (en) * 2003-09-30 2007-03-01 Honda Motor Co., Ltd. Idle speed control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5598628A (en) * 1979-01-22 1980-07-26 Hitachi Ltd Control system for controlling revolutional speed of engine during idling operation of the same
JPS5696126A (en) * 1979-12-27 1981-08-04 Toyota Motor Corp Idle rotary speed controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5598628A (en) * 1979-01-22 1980-07-26 Hitachi Ltd Control system for controlling revolutional speed of engine during idling operation of the same
JPS5696126A (en) * 1979-12-27 1981-08-04 Toyota Motor Corp Idle rotary speed controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6444339U (en) * 1987-09-10 1989-03-16
DE4030764A1 (en) * 1989-09-29 1991-04-11 Fuji Heavy Ind Ltd CONTROL SYSTEM FOR CONTROLLING THE IDLE SPEED OF AN INTERNAL COMBUSTION ENGINE
US5076230A (en) * 1989-09-29 1991-12-31 Fuji Jukogyo Kabushiki Kaisha Idle speed control system for an engine
JPH05263690A (en) * 1992-03-23 1993-10-12 Mitsubishi Electric Corp Idling control device of engine
ES2267359A1 (en) * 2003-09-30 2007-03-01 Honda Motor Co., Ltd. Idle speed control device

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