JPS60101236A - Engine rotational speed control device - Google Patents

Engine rotational speed control device

Info

Publication number
JPS60101236A
JPS60101236A JP20900083A JP20900083A JPS60101236A JP S60101236 A JPS60101236 A JP S60101236A JP 20900083 A JP20900083 A JP 20900083A JP 20900083 A JP20900083 A JP 20900083A JP S60101236 A JPS60101236 A JP S60101236A
Authority
JP
Japan
Prior art keywords
control
rotational speed
engine
feed
value
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
JP20900083A
Other languages
Japanese (ja)
Inventor
Takashi Shiraishi
隆 白石
Taiji Hasegawa
長谷川　泰二
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP20900083A priority Critical patent/JPS60101236A/en
Publication of JPS60101236A publication Critical patent/JPS60101236A/en
Pending legal-status Critical Current

Links

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
    • F02D11/08—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 pneumatic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed

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 make it possible to satisfactorily perform an idle control, by ceasing the feed-back control of an engine until the variation rate of rotational speed of the engine becomes lower than a predetermined value, and by making the control condition of the engine gradually approach to a certain constant value upon restarting of the feed-back control. CONSTITUTION:The idle speed of an engine is controlled by the feed-back control of a throttle valve in a carburettor A with the use of a solenoid C for controlling a vacuum diaphragm B or vacuum. The larger the duty ratio of the solenoid C, the higher the vacuum would become so that the diaphragm B opens the throttle valve to increase the rotational speed. When the variation rate of the engine rotational speed reaches a predetermined value, the value is made gradually approach to a predetermined desired value from a fixed duty value for preparing the restarting of the feed-back control which is therefore smoothly carried out at the next step. Further in order to set the timing of restarting at the variation rate the feed-back control is restarted at once if a variation in rotational speed is small.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、エンジン回転制御装置に従い、特に急激な回
転数変動よりの復帰に、好適なエンジン回転数制御に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an engine rotation control device, and particularly to engine rotation speed control suitable for recovery from rapid rotation speed fluctuations.

〔発明の背景〕[Background of the invention]

エンジン回転数を制御する装置、特に、アイドルスピー
ドコントロール（ＴＳＣ）Ｋおいテハ、空ふかしゃ、減
速時における制御音−但、フィードバック制御から、解
放し、ある時間上おいてからフィードバックによる制御
全開始する方式を採っていた。（第１図参照）しかしな
がら、この方式では、空ふかし等の大きさに関係無く、
一定時間の開音おいてからフィードバックを始めるため
。A device that controls the engine speed, especially the idle speed control (TSC). Control noises during idle speed, idle speed, and deceleration. However, the feedback control should be released and the full feedback control should be started after a certain period of time. method was adopted. (See Figure 1) However, with this method, regardless of the size of the
To start feedback after the sound has been open for a certain period of time.

系が、不安定に、なりやすいという欠点があった。The disadvantage is that the system tends to become unstable.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、空ぶかし等からの固定制御から、フィ
ードバック制御に効果的に移行させることにより、良好
な、アイドル制御を行ない得るエンジン回転制御装置全
提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an engine rotation control device that can perform good idle control by effectively shifting from fixed control such as engine racing to feedback control.

〔発明の概要〕[Summary of the invention]

本発明は、空ぶかし等径のエンジン回転数の変化率が、
アイドル回転に近ずくほど、少さくなることに着目し、
その変化率が、ある値以下になった時に、序々に一定値
に制御を移し、フィートノくツク制御に入れるようにし
たものである。In the present invention, the rate of change in the engine rotation speed of the engine speed is
Focusing on the fact that the closer it gets to idle speed, the less it becomes.
When the rate of change falls below a certain value, the control is gradually shifted to a constant value, and the control is put into foot-knock control.

〔発明の実施例〕[Embodiments of the invention]

本発明の一実施例の原理を、まず第２図により、説明す
る。本例では、アイドルスピード金、キャブレターＡ内
のスロットルバルブを、負圧ダイヤフラムＢ及び、負圧
全変化させるためのソレノイドＣにより、コントロール
し、エンジン回転を、フィードバックさせて制御を行う
ものでおる。ソレノイドＣのＪ）ｕｔｙが大きいほど、
負圧は、大きくなり、ダイヤフラムＢは、スロットルバ
ルブ全開き、回転？上昇させることになる。The principle of one embodiment of the present invention will first be explained with reference to FIG. In this example, the idle speed control and the throttle valve in the carburetor A are controlled by a negative pressure diaphragm B and a solenoid C for completely changing the negative pressure, and the engine rotation is controlled by feedback. The larger J)uty of solenoid C,
Negative pressure increases and diaphragm B rotates with throttle valve fully open? It will be raised.

このような装置では、アイドル回転を、いかに発振金押
さえてコントロールするかが大切であり従って、固定制
御からフィードバック制御への、移り変わり、特に、回
転が急変しているときの、それが問題となる。In such devices, it is important to control the idle rotation by holding down the oscillator, and therefore the transition from fixed control to feedback control, especially when the rotation is changing suddenly, becomes a problem. .

本発明は、第３図のように、エンジン回転の、変動率が
、所定値αになった時に、フィードバック再開の準備と
して、固定Ｄｕｔｙｃ点より、序々に所定目標値に近ず
けることにより、次の段階でのフィードバックを円滑に
行うことができるわけである。また、回転数の変動率に
より、再開タイミング全設定するため、回転変動の小さ
い時には、すぐにフィードバックを始め、変動の大きい
ときにはフィードバック開始を遅くする効果をも持つ。In the present invention, as shown in FIG. 3, when the fluctuation rate of the engine rotation reaches a predetermined value α, in preparation for restarting the feedback, the fixed DutyC point is gradually brought closer to the predetermined target value. This allows for smooth feedback at the next stage. In addition, since the restart timing is completely set according to the rate of variation in the rotational speed, it has the effect of starting feedback immediately when the rotational speed fluctuation is small, and delaying the start of feedback when the fluctuation is large.

本発明のフローチャートラ第４図に示す。The flowchart of the present invention is shown in FIG.

本発明はキャブレターによる例でアリ、この回転変動率
により、空燃比も序々にＬｅａｎ方向へ移動することも
可能である。また、インジェクタによジ、本方式で制御
することも可能である。The present invention uses a carburetor as an example, and it is also possible to gradually shift the air-fuel ratio in the Lean direction due to this rotational fluctuation rate. It is also possible to control the injector using this method.

〔発明の効果〕〔Effect of the invention〕

本発明によれは、適確なフィードバック制御を′再開源
せられるため、回転数の発振の少ない、効果的な制御を
行うことができる。According to the present invention, since accurate feedback control can be restarted, effective control with less oscillation of the rotational speed can be performed.

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

第１図は従来例による制御を示す図、第２図はアイドル
スピード制御の一実施例を示す図、第３図は本発明の一
実施例を示す図、第４図はそのフローチャートを示す。 第１　図 時間 第２図 第３０FIG. 1 is a diagram showing conventional control, FIG. 2 is a diagram showing an embodiment of idle speed control, FIG. 3 is a diagram showing an embodiment of the present invention, and FIG. 4 is a flowchart thereof. Figure 1 Time Figure 2 Figure 30

Claims (1)

【特許請求の範囲】 １、　フィードバック制御を用いて、エンジン回転全一
定値に制御する装置において、エンジン回転の変化率が
、所定値以下になるまでフィードバック制御をやめるこ
とを特徴とするエンジン回転制御装置。 ２、特許請求の範囲第１項において、フィードバックを
再開する際に、制御状態ヲ、する一定値に序々に近ずけ
ること全特徴とするエンジン回転制御装置ａＤ ３　％許請求の範囲第１項において、フィードバック全
再開する際に、制御状態を、その直前で、フィードバッ
クを行っていた時の状態に、序々に近ずけること全特徴
とするエンジン回転制御装置。[Claims] 1. An engine rotation control device that uses feedback control to control the engine rotation to a constant value, characterized in that the feedback control is stopped until the rate of change in the engine rotation becomes equal to or less than a predetermined value. Device. 2. An engine rotation control device aD3%, which is characterized in that when restarting feedback, the control state gradually approaches a constant value. An engine rotation control device characterized in that, when fully restarting feedback, the control state gradually approaches the state when feedback was being performed immediately before.
JP20900083A 1983-11-09 1983-11-09 Engine rotational speed control device Pending JPS60101236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20900083A JPS60101236A (en) 1983-11-09 1983-11-09 Engine rotational speed control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20900083A JPS60101236A (en) 1983-11-09 1983-11-09 Engine rotational speed control device

Publications (1)

Publication Number Publication Date
JPS60101236A true JPS60101236A (en) 1985-06-05

Family

ID=16565644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20900083A Pending JPS60101236A (en) 1983-11-09 1983-11-09 Engine rotational speed control device

Country Status (1)

Country Link
JP (1) JPS60101236A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013083234A (en) * 2011-10-12 2013-05-09 Mitsubishi Motors Corp Torque base control device
EP2581587A3 (en) * 2008-07-24 2014-08-13 Polaris Industries Inc. Tractor vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581587A3 (en) * 2008-07-24 2014-08-13 Polaris Industries Inc. Tractor vehicle
JP2013083234A (en) * 2011-10-12 2013-05-09 Mitsubishi Motors Corp Torque base control device

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