JPH073207B2 - Internal combustion engine speed control device - Google Patents
Internal combustion engine speed control deviceInfo
- Publication number
- JPH073207B2 JPH073207B2 JP61028417A JP2841786A JPH073207B2 JP H073207 B2 JPH073207 B2 JP H073207B2 JP 61028417 A JP61028417 A JP 61028417A JP 2841786 A JP2841786 A JP 2841786A JP H073207 B2 JPH073207 B2 JP H073207B2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- engine
- rotation speed
- intake air
- output
- 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
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は内燃機関の無負荷回転数を所定の回転数にフ
イードバツク制御する内燃機関の回転数制御装置に関す
るものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotational speed control device for an internal combustion engine, which controls a no-load rotational speed of the internal combustion engine to a predetermined rotational speed by feedback control.
従来より、内燃機関の無負荷回転数を所定の回転数に定
値制御することが行われている。かかる回転数制御の目
的とするところは、無負荷時の燃料消費を極力抑制する
よう無負荷回転数を低く設定することおよび外乱による
回転数変動を抑制することであつて、このため迅速かつ
高精度の制御性が要求される。2. Description of the Related Art Conventionally, constant value control of the unloaded engine speed of an internal combustion engine has been performed to a predetermined engine speed. The purpose of such rotational speed control is to set the no-load rotational speed low so as to suppress fuel consumption during no load as much as possible and to suppress rotational speed fluctuations due to disturbances. Precision controllability is required.
回転数を変動させる要因としては、大別して機関そのも
のの無負荷損失の変動や機関の熱効率の変動による一次
要因と、この一次要因による回転数変動を調整するため
に用いられる吸気調整手段に内在する調整ゲインの変動
や吸気源である大気の密度の変動による二次要因とに分
類される。このため、例えば特開昭59−162340号公報に
示されるように、回転数の目標値と実際の値との偏差に
基づいた調整信号に応じて目標の吸気量または吸気管圧
力を発生し、これと実際の吸気量または吸気管圧力との
偏差に基づいた調整信号に応じて吸気調整手段を制御す
ることによつて回転数を目標値に制御する方法がある。
この方法によれば前記回転変動の一次要因に対しては回
転数の目標値と実際値との偏差に基づく調整信号（回転
数調整信号）が応動し、二次要因に対しては吸気量また
は吸気管圧力の目標値と実際値に基づく調整信号（吸気
調整信号）が応動するため、回転数のみによつてフイー
ドバツク制御するよりは回転変動を高精度にかつ迅速に
調整が可能である。The factors that change the rotational speed are roughly classified into the primary factor due to the fluctuation of the no-load loss of the engine itself and the fluctuation of the thermal efficiency of the engine, and the intake adjustment means used to adjust the rotational speed fluctuation due to this primary factor. It is classified as a secondary factor due to fluctuations in the adjustment gain and fluctuations in the density of the atmosphere that is the intake source. Therefore, for example, as shown in JP-A-59-162340, a target intake amount or intake pipe pressure is generated according to an adjustment signal based on the deviation between the target value and the actual value of the rotational speed, There is a method of controlling the number of revolutions to a target value by controlling the intake adjusting means according to an adjustment signal based on the deviation between this and the actual intake amount or intake pipe pressure.
According to this method, the adjustment signal (rotation speed adjustment signal) based on the deviation between the target value and the actual value of the rotation speed responds to the primary cause of the rotation fluctuation, and the intake air amount or the Since the adjustment signal (intake adjustment signal) based on the target value and the actual value of the intake pipe pressure responds, the rotation fluctuation can be adjusted with high accuracy and speed, as compared with the feedback control based on only the rotation speed.
しかし上記の回転数制御は主として次のような問題があ
る。すなわち、前記の二次要因に対しては吸気量または
吸気管圧力の目標値と実際値に基づいて調整信号（吸気
調整信号）を得るが、吸気調整手段に内在する調整ゲイ
ンの変動や長期使用による変動（経年変化）または吸気
源たる大気密度の変動は機関停止時から再始動する間に
変化することは一般的に少ない。従つて機関を再始動し
回転数制御を行う吸気調整信号は機関停止前と略同じ値
を示すことになるが、該調整信号が再始動後に回転数制
御を行い所定の値に達するまでの間、機関は異常な回転
数上昇や回転数低下を起こしてしまうおそれがあつた。However, the above rotation speed control has the following problems. That is, for the above-mentioned secondary factors, the adjustment signal (intake adjustment signal) is obtained based on the target value and the actual value of the intake air amount or intake pipe pressure, but fluctuations in the adjustment gain inherent in the intake adjusting means and long-term use Generally, the fluctuation (change over time) or the fluctuation of the atmospheric density that is the intake source does not change between the time when the engine is stopped and the time when the engine is restarted. Therefore, the intake adjustment signal for restarting the engine and controlling the rotation speed will show approximately the same value as before the engine was stopped, but until the adjustment signal reaches the predetermined value by controlling the rotation speed after restarting. , The engine may have an abnormal increase or decrease in rotation speed.
この発明は上記の問題点を解決するためになされたもの
で、機関始動後の回転数制御開始時に異常な回転数上昇
や回転数低下を起こすことのない内燃機関の回転数制御
装置を得ることを目的とする。The present invention has been made to solve the above-described problems, and provides a rotation speed control device for an internal combustion engine that does not cause an abnormal increase in rotation speed or a decrease in rotation speed at the start of rotation speed control after engine startup. With the goal.
この発明に係る内燃機関の回転数制御装置は、回転変動
の要因を機関の損失に基づくものと吸気量調整手段に基
づくものとに分離して、機関の目標吸気量または目標吸
気管圧力の信号を出力する回転数調整器と、この回転数
調整器の出力と機関の吸気量または吸気管圧力の検出信
号とに基づき吸気調整信号を発生する吸気調整器とを設
け、更に吸気調整器のの出力を記憶する吸気調整量記憶
回路を備え、その記憶値を機関の次回の運転時に初期値
として使用するようにしたものである。An engine speed control device for an internal combustion engine according to the present invention separates a factor of rotational fluctuation into one based on engine loss and one based on intake air amount adjusting means, and outputs a signal of a target intake air amount or a target intake pipe pressure of the engine. Is provided, and an intake air regulator that generates an intake air adjustment signal based on the output of this rotation speed regulator and a detection signal of the intake air amount or intake pipe pressure of the engine is provided. An intake air adjustment amount storage circuit for storing the output is provided, and the stored value is used as an initial value at the next operation of the engine.
この発明においては、機械停止時も吸気調整信号が吸気
調整量記憶回路で記憶されているため、次回の機関始動
後の回転数制御開始時に記憶された値により制御を開始
することによつて、異常な回転数上昇や回転数低下を生
じることなく、速やかに目標回転数への制御が行える。In the present invention, since the intake adjustment signal is stored in the intake adjustment amount storage circuit even when the machine is stopped, by starting the control with the value stored at the start of the rotational speed control after the next engine start, The target rotation speed can be promptly controlled without causing an abnormal increase or decrease in rotation speed.
以下、この発明の一実施例を第１図について説明する。
図において、１は内燃機関、２は吸気管、３は吸気管２
内に設けられ、回転数を負荷に対応して制御するための
スロツトル弁、4aは機関の回転に連動して回転する歯
車、4bは歯車4aの回転を検出して機関回転数を検出する
回転数センサ、５は機関温度などの諸条件に対応して無
負荷回転数の目標値を発生する目標回転数発生器、6aは
この目標回転数発生器５の出力（Nt）と回転数センサ4b
の出力（Ne）との誤差（△Ｎ）を演算する誤差増巾器、
6bは誤差増巾器6aの出力を受けて比例，積分もしくは微
分動作によつて誤差（△Ｎ）をなくすよう回転数調整信
号を発生する回転数調整器、７は回転数調整器6bの作用
を停止する回転数調整停止器で、7aはその切換器、7bは
変換器であり、この回転数調整停止器７の出力は機関の
目標吸気量（Qt）となる。また、８は機関の吸気量（Q
e）を検出する吸気量センサ、9aは目標吸気量（Qt）と
吸気量センサ８の出力（Qe）との誤差（△Ｑ）を演算す
る誤差増巾器、9bは誤差（△Ｑ）を受けて比例，積分ま
たは微分動作によつて誤差（△Ｑ）をなくすよう吸気調
整信号を発生する吸気調整器、9cはこの吸気調整器9bよ
り出力される吸気調整信号を機関作動時に記憶し、機関
停止時にも記憶保存する吸気調整量記憶回路、10は吸気
調整器9bの作用を停止する吸気調整停止器で、10aはそ
の切換器、10bは変換器である。更に、11は吸気調整停
止器10の出力を受けて駆動信号を発生する駆動装置、12
はこの駆動信号に応じて開口面積が増減制御される吸気
制御弁であつて、入力電圧に比例して位置が変化するリ
ニアソレノイド弁あるいは通電時間に比例して位置が変
化するDCモータ制御弁などが使用される。13a,13bはバ
イパス通路で、スロツトル弁３の前後で吸気管２をバイ
パスする。なお、変換器7bは目標回転数発生器５からの
目標回転数信号（Nt）に応じた大きさの標準吸気量値を
出力するようになっている。切換器7aは、後述の制限値
を予め記憶している記憶回路と、この制限値と回転数調
整器6bの出力との大小を比較する比較器と、この比較結
果に応じて切換えられ、回転数調整器6bの出力と変換器
7bからの標準吸気量値のいずれかを選択して出力するス
イッチとから構成されている。また、吸気調整停止器10
も回転数調整停止器７と同様な構成である。変換器10b
は切換器7aからの機関吸気量の目標値（Qt）に応じた大
きさの標準調整値を出力するようになっている。また、
切換器10aは、後述の制限値を記憶している記憶回路
と、この制限値と吸気調整器9bの出力との大小を比較す
る比較器と、この比較結果に応じて切換えられ、吸気調
整器9bの出力と変換器10bからの標準調整値のいずれか
を選択して出力するスイッチとから構成されている。An embodiment of the present invention will be described below with reference to FIG.
In the figure, 1 is an internal combustion engine, 2 is an intake pipe, 3 is an intake pipe 2
A throttle valve that is provided inside to control the number of revolutions according to the load, 4a is a gear that rotates in conjunction with the rotation of the engine, and 4b is a rotation that detects the rotation of the gear 4a and detects the number of revolutions of the engine. A number sensor, 5 is a target speed generator that generates a target value of the no-load speed corresponding to various conditions such as engine temperature, and 6a is an output (Nt) of the target speed generator 5 and a speed sensor 4b.
Error amplifier that calculates the error (△ N) from the output (Ne) of
6b is a rotation speed regulator that receives the output of the error amplifier 6a and generates a rotation speed adjustment signal so as to eliminate an error (ΔN) by proportional, integral or differential operation, and 7 is an operation of the rotation speed adjuster 6b. Is a rotation speed adjustment stop device, 7a is its switching device, and 7b is a converter. The output of this rotation speed adjustment stop device 7 becomes the target intake air amount (Qt) of the engine. Further, 8 is the intake amount of the engine (Q
An intake air amount sensor that detects e), 9a is an error amplifier that calculates an error (ΔQ) between the target intake air amount (Qt) and the output (Qe) of the intake air amount sensor 8, and 9b is an error (ΔQ). The intake regulator that receives the intake adjustment signal to eliminate the error (ΔQ) by proportional, integral, or differential operation, 9c stores the intake adjustment signal output from the intake regulator 9b when the engine is operating, An intake air adjustment amount storage circuit that stores and stores even when the engine is stopped, 10 is an intake air adjustment stop device that stops the action of the intake air adjustment device 9b, 10a is its switching device, and 10b is a converter. Further, 11 is a drive device that receives the output of the intake adjustment stop 10 and generates a drive signal, 12
Is an intake control valve whose opening area is controlled to increase or decrease according to this drive signal, such as a linear solenoid valve whose position changes in proportion to the input voltage or a DC motor control valve whose position changes in proportion to the energization time. Is used. Bypass passages 13a and 13b bypass the intake pipe 2 before and after the throttle valve 3. The converter 7b outputs a standard intake air amount value having a magnitude corresponding to the target rotation speed signal (Nt) from the target rotation speed generator 5. The switch 7a is a storage circuit that stores a limit value described later in advance, a comparator that compares the limit value and the output of the rotation speed adjuster 6b, and the rotation is switched according to the comparison result. Number regulator 6b output and converter
It is composed of a switch that selects and outputs any of the standard intake air amount values from 7b. Also, the intake adjustment stop 10
Also has the same configuration as the rotation speed adjustment stopper 7. Converter 10b
Outputs a standard adjustment value of a size corresponding to the target value (Qt) of the engine intake air amount from the switch 7a. Also,
The switching device 10a is a storage circuit that stores a limit value described below, a comparator that compares the limit value and the output of the intake air regulator 9b, and is switched according to the comparison result. It is composed of an output of 9b and a switch for selecting and outputting any one of the standard adjustment values from the converter 10b.
次に上記構成の回転数制御装置の動作について説明す
る。先ず、目標回転数発生器５の出力（Nt）と回転数セ
ンサ4bの出力（Ne）との誤差（ΔＮ）が誤差増巾器6aで
演算され、この回転数の誤差（△Ｎ）によつて回転数調
整器6bが作動し出力を発生する。この出力は誤差（△
Ｎ）が減少する方向へ発生するので誤差（△Ｎ）が極小
になると整定する。そしてこの出力は回転数調整停止器
７を構成する切換器7aに与えられ、切換器7aは回転数調
整器6bの出力を制限値と比較して制限値より小さい時に
通過させ出力とする。制限値より大きい場合は回転数調
整器6bの出力を阻止し、目標回点数（NT）に応じて変換
器7bが発生する値すなわち標準的機関が目標回転数を保
つのに必要な標準吸気量を切換器7aが出力する。切換器
7aの出力は機関吸気量の目標値（Qt）として用いられ、
吸気量センサ８の出力（Qe）との誤差（△Ｑ）が誤差増
巾器9aによつて求められる。この吸気量誤差（△Ｑ）に
よつて吸気調整器9bが作動して出力を発生し、この出力
は誤差（△Ｑ）が減少する方向に発生するので誤差（△
Ｑ）が極小になると整定する。吸気調整器9bの出力は吸
気調整停止器10を構成する切換器10aに与えられ、切換
器10aは吸気調整器9bの出力を制限値と比較してこの制
限値より小さい時通過させ出力とする。制限値より大き
い時は吸気調整器9bの出力を阻止し、目標吸気量（Qt）
に応じて変換器10bが発生する値すなわち標準的吸気制
御系統が目標の吸気量を保つのに必要な標準調整値を切
換器10aが出力し、切換器10aの出力は駆動装置11によつ
て電気信号に変換される。吸気制御弁12はこの電気信号
に応じて開口面積が変化し、開口面積に応じた空気流量
がバイパス13a,13bを介して流れ、内燃機関１の吸入す
る空気流量が増減する。かくして内燃機関１の回転数は
目標値に整定し、この時吸気量も目標値に整定してい
る。この整定状態における吸気調整信号は誤差（△Ｑ）
を極小に調整している。これはスロツトル弁３の無負荷
位置における漏れ空気量のばらつき、吸気制御弁12の初
期特性誤差や温度などによる特性変動、駆動装置11の電
源電圧依存性あるいは大気密度によるゲイン依存性など
の吸気量を調整するための各構成要素に内在する誤差を
吸気調整信号が調整しているためである。また、切換器
10aはこれら吸気量を調整するための各構成要素に内在
する誤差を略累積した値に相当して適度な制限値が定め
られている。従つて吸気量センサ８が故障して吸気量
（Qe）の帰還が行われなくなつた場合に吸気調整信号が
発散しても、切換器10aにより調整信号が標準調整値に
切換られて吸気量の発散が防止されるので帰還回転数の
発散（暴走または停止）が防止される。Next, the operation of the rotation speed control device having the above configuration will be described. First, the error (ΔN) between the output (Nt) of the target rotation speed generator 5 and the output (Ne) of the rotation speed sensor 4b is calculated by the error amplifier 6a, and the error (ΔN) of this rotation speed is calculated. Then, the rotation speed regulator 6b operates to generate an output. This output is the error (△
Since N) is generated in the decreasing direction, it is settled when the error (ΔN) becomes minimum. Then, this output is given to the switching device 7a which constitutes the rotation speed adjustment stopper 7, and the switching device 7a compares the output of the rotation speed adjusting device 6b with the limit value and passes it when it is smaller than the limit value, and outputs it. If it is larger than the limit value, the output of the speed regulator 6b is blocked, and the value generated by the converter 7b according to the target speed (N T ), that is, the standard intake air required for the standard engine to maintain the target speed. The switch 7a outputs the amount. Switch
The output of 7a is used as the target value (Qt) of the engine intake air,
The error (ΔQ) from the output (Qe) of the intake air amount sensor 8 is obtained by the error amplifier 9a. Due to this intake air amount error (ΔQ), the intake air regulator 9b operates to generate an output, and this output is generated in the direction in which the error (ΔQ) decreases.
Settles when Q) becomes minimal. The output of the intake regulator 9b is given to the switch 10a that constitutes the intake regulator 10 and the switch 10a compares the output of the intake regulator 9b with a limit value and passes it when it is smaller than this limit value, and outputs it. . When it is larger than the limit value, the output of the intake regulator 9b is blocked and the target intake air amount (Qt)
The switch 10a outputs the value generated by the converter 10b, that is, the standard adjustment value required for the standard intake control system to maintain the target intake air amount, and the output of the switch 10a is output by the drive unit 11. It is converted into an electric signal. The opening area of the intake control valve 12 changes according to this electric signal, the air flow rate according to the opening area flows through the bypasses 13a and 13b, and the air flow rate taken by the internal combustion engine 1 increases or decreases. Thus, the rotation speed of the internal combustion engine 1 is settled at the target value, and the intake air amount is also settled at the target value at this time. The intake adjustment signal in this settling state has an error (ΔQ)
Is adjusted to a minimum. This is due to variations in the amount of leaked air at the unloaded position of the throttle valve 3, variations in characteristics of the intake control valve 12 due to initial characteristic errors, temperature, etc. This is because the intake adjustment signal adjusts the error inherent in each component for adjusting the. Also, switch
For 10a, an appropriate limit value is set corresponding to a value obtained by substantially accumulating errors inherent in each component for adjusting the intake air amount. Therefore, even if the intake air adjustment signal diverges when the intake air amount sensor 8 fails and the intake air amount (Qe) is not fed back, the adjustment signal is switched to the standard adjustment value by the switch 10a and the intake air amount is changed. Since the divergence of is prevented, the divergence of the return speed (runaway or stop) is prevented.
また、回転数調整信号は誤差（△Ｎ）を極小に調整し
て、機関回転数（Ne）を目標の回転数（Nt）に略一致さ
せるよう目標の吸気量（Qt）を調整している。これは機
関各部における損失のばらつきや温度による熱効率の変
動あるいは自動車用内燃機関などに見られるようにラン
プ類やモータ類などの各種装備品による負荷変動を回転
数調整信号が調整しているためである。切換器7aはこれ
ら機関各部の損失や負荷変動による誤差を略累積した値
に相当して適度な制限値が定められている。従つて回転
数センサ4bなどが故障して回転数の帰還が行われなくな
つた場合に回転数調整信号が発散しても切換器7aにより
調整信号が標準吸気量に切換られ、吸気量の目標値が発
散しないため機関回転数の発散が防止される。Also, the error (ΔN) of the rotation speed adjustment signal is adjusted to a minimum, and the target intake air amount (Qt) is adjusted so that the engine speed (Ne) substantially matches the target rotation speed (Nt). . This is because the rotational speed adjustment signal adjusts the fluctuations in the loss in various parts of the engine, the fluctuations in thermal efficiency due to temperature, and the fluctuations in load caused by various equipment such as lamps and motors as seen in internal combustion engines for automobiles. is there. The switch 7a is set with a proper limit value corresponding to a value obtained by substantially accumulating errors due to the loss of each part of the engine and load fluctuations. Therefore, if the rotation speed sensor 4b or the like fails and the rotation speed is no longer fed back, even if the rotation speed adjustment signal diverges, the adjustment signal is switched to the standard intake air quantity by the switch 7a, and the target intake air quantity is obtained. Since the value does not diverge, the engine speed divergence is prevented.
更に、吸気調整信号は吸気調整量記憶回路9cで記憶さ
れ、機関が停止しいわゆるエンジンを切つた状態におい
てもその値が保存され、運転を再開して必要な時に前回
運転時の値を利用することができる。すなわち、前述し
たようにスロツトル弁３の無負荷位置における漏れ空気
量のばらつき、吸気制御弁12の初期特性誤差や温度など
による特性変動、駆動装置11の電源電圧の依存性あるい
は大気密度によるゲインの依存性等の変動がもたらす初
期設定のずれを運転毎に吸収することなく、前回得られ
た値を基準に動作することにより、前記ずれの吸収中に
発生する異常な回転数上昇や回転数低下を防止すること
ができる。また、前述した吸気調整信号を記憶するに
は、機関の冷却水温が所定範囲外または機関の回転数が
過渡状態にある期間以外、すなわち暖機運転完了後でか
つ該吸気調整信号の基準状態である無負荷運転時および
負荷変化等から十分な期間をおいて回転数が安定した状
態に演算しかつ最新の状態の調整信号量を記憶し、使用
するのがより望ましい。Further, the intake adjustment signal is stored in the intake adjustment amount storage circuit 9c, and the value is stored even when the engine is stopped and the so-called engine is turned off, and the value of the previous operation is used when restarting the operation when necessary. be able to. That is, as described above, variations in the amount of leaked air at the unloaded position of the throttle valve 3, characteristic variations of the intake control valve 12 due to initial characteristic error, temperature, etc., dependence of the power supply voltage of the drive device 11 or gain due to atmospheric density. By operating based on the value obtained last time without absorbing the deviation of the initial setting caused by the fluctuation of the dependency for each operation, abnormal rotation speed increase and rotation speed decrease that occur during the absorption of the deviation. Can be prevented. Further, in order to store the above-mentioned intake air adjustment signal, except when the engine cooling water temperature is outside the predetermined range or the engine speed is in a transient state, that is, after warm-up operation completion and in the reference state of the intake air adjustment signal. It is more desirable to perform a calculation in a state where the rotation speed is stable and store the latest adjustment signal amount for a sufficient period after a certain no-load operation or a load change and the like, and use the adjustment signal amount.
なお、上記実施例においては吸気量センサ８を用いて吸
気量を検出したが、スロツトル弁３の下流側に吸気管圧
力センサを設け、これによつて吸気管圧力を検出するよ
うにしても、上記実施例と同様の効果を奏する。Although the intake air amount sensor 8 is used to detect the intake air amount in the above embodiment, an intake pipe pressure sensor may be provided downstream of the throttle valve 3 to detect the intake pipe pressure. The same effect as that of the above embodiment is obtained.
以上のようにこの発明によれば、回転数調整器の出力と
機関の吸気量または吸気管圧力の検出信号とに基づき吸
気調整信号も発生する吸気調整器の出力を、機関停止時
にも吸気調整量記憶回路で記憶保存するようにしたの
で、次回始動後の回転数制御開始時にその値を使用する
ことができ、従って所定空気量を得るのに初期からの経
時変化（吸気管の目詰り等に帰因する）による吸気調整
誤差をなくすことができ、次回始動時の異常な回転数上
昇や回転数低下が防止され、速やかに目標回転数に整定
させることができる。As described above, according to the present invention, the output of the intake regulator that also generates the intake adjustment signal based on the output of the rotation speed regulator and the detection signal of the intake amount of the engine or the intake pipe pressure is adjusted even when the engine is stopped. Since it is stored and stored in the amount storage circuit, that value can be used at the time of starting the rotation speed control after the next start, and therefore the change over time from the beginning to obtain the predetermined air amount (clogging of the intake pipe, etc.) It is possible to eliminate an intake air adjustment error due to the above), prevent abnormal rotation speed increase and rotation speed decrease at the next start, and quickly settle to the target rotation speed.
第１図はこの発明の一実施例による内燃機関の回転数制
御装置の構成図である。 １……機関、２……吸気管、4b……回転数センサ、５…
…目標回転数発生器、6b……回転数調整器、８……吸気
量センサ、9b……吸気調整器、9c……吸気調整量記憶回
路、12……吸気制御弁。FIG. 1 is a configuration diagram of a rotation speed control device for an internal combustion engine according to an embodiment of the present invention. 1 ... Engine, 2 ... Intake pipe, 4b ... Rotation speed sensor, 5 ...
… Target speed generator, 6b… Rotation speed regulator, 8 …… Intake air amount sensor, 9b …… Intake air regulator, 9c …… Intake air adjustment amount memory circuit, 12 …… Intake air control valve.
Claims (2)
関の目標吸気量または目標吸気管圧力の信号を出力する
回転数調整器、この回転数調整器の出力と機関の吸気量
または吸気管圧力の検出信号との偏差に基づき吸気調整
信号を発生する吸気調整器、スロットル弁の前後で吸気
管をバイパスするバイパス通路に設けられ、前記回転数
調整器の出力と前記吸気調整器の出力とによって機関の
吸気量または吸気管圧力を制御する吸気制御弁、機関動
作時において前記吸気調整器の出力を記憶する吸気調整
量記憶回路を備え、前記吸気調整器は、機関停止後の次
回の運転時に前記吸気調整量記憶回路で前回記憶された
調整信号量を初期値として動作するようにした内燃機関
の回転数制御装置。1. A rotation speed regulator for outputting a signal of a target intake air amount of the engine or a target intake pipe pressure based on the rotation speed of the engine and a target rotation speed, the output of the rotation speed regulator and the intake air amount of the engine or An intake air regulator that generates an intake air adjustment signal based on a deviation from the detection signal of the intake pipe pressure, a bypass passage that bypasses the intake pipe before and after the throttle valve, and is provided with the output of the rotation speed regulator and the intake air regulator. An intake control valve that controls the intake amount or intake pipe pressure of the engine depending on the output and an intake adjustment amount storage circuit that stores the output of the intake regulator during engine operation. The internal combustion engine rotational speed control device is configured to operate with the adjustment signal amount previously stored in the intake air adjustment amount storage circuit as an initial value during the operation.
所定範囲外の状態または機関の回転数が過渡状態の場合
のうち少なくとも一つの状態にある期間を除いて吸気調
整器により演算された吸気調整信号を常に最新の値に更
新して記憶する特許請求の範囲第１項記載の内燃機関の
回転数制御装置。2. The intake adjustment amount storage circuit is calculated by the intake adjuster except for a period in which the cooling water temperature of the engine is outside a predetermined range or at least one of the states where the engine speed is in a transient state. The rotation speed control device for an internal combustion engine according to claim 1, wherein the intake air adjustment signal is constantly updated to the latest value and stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61028417A JPH073207B2 (en) | 1986-02-12 | 1986-02-12 | Internal combustion engine speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61028417A JPH073207B2 (en) | 1986-02-12 | 1986-02-12 | Internal combustion engine speed control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62186030A JPS62186030A (en) | 1987-08-14 |
| JPH073207B2 true JPH073207B2 (en) | 1995-01-18 |
Family
ID=12248079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61028417A Expired - Lifetime JPH073207B2 (en) | 1986-02-12 | 1986-02-12 | Internal combustion engine speed control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073207B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756643A (en) * | 1980-09-24 | 1982-04-05 | Toyota Motor Corp | Intake air flow rate control device of internal combustion engine |
| DE3238189A1 (en) * | 1982-10-15 | 1984-04-19 | Robert Bosch Gmbh, 7000 Stuttgart | IDLE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE |
-
1986
- 1986-02-12 JP JP61028417A patent/JPH073207B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62186030A (en) | 1987-08-14 |
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