JPS629723B2 - - Google Patents
Info
- Publication number
- JPS629723B2 JPS629723B2 JP53101147A JP10114778A JPS629723B2 JP S629723 B2 JPS629723 B2 JP S629723B2 JP 53101147 A JP53101147 A JP 53101147A JP 10114778 A JP10114778 A JP 10114778A JP S629723 B2 JPS629723 B2 JP S629723B2
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- controlling
- engine
- turbine
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 239000000446 fuel Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は自動車等のターボチヤージヤ付内燃機
関の制御方法に係り、特にターボチヤージヤ付内
燃機関の過給圧力の制御方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of controlling a turbocharged internal combustion engine of an automobile, and more particularly to a method of controlling supercharging pressure of a turbocharged internal combustion engine.
従来のターボチヤージヤ付内燃機関は、機関排
気の全量をタービン中に回収して排気の有する動
圧を利用しコンプレツサの性能向上を計つて来
た。しかし回転機であるタービン、コンプレツサ
の特性上、機関が低速・低負荷時は過給圧力が低
下し、高速・高負荷時には過給圧力が好ましくな
い値迄上昇するので、特に自動車用機関のように
運転速度が広範囲に及ぶ場合は使用上不便な点が
あつた。このような問題点を解決するために機関
の高速側でタービンへ流入する排気の一部をバイ
パスさせてタービンの排出路に流してやる方法も
用いられているが、これだけでは今後自動車用機
関に要求される広範囲な運転状況を制御させるに
は不十分である。 In conventional turbocharged internal combustion engines, the entire amount of engine exhaust gas is collected into a turbine and the dynamic pressure of the exhaust gas is used to improve the performance of the compressor. However, due to the characteristics of the turbine and compressor, which are rotating machines, the boost pressure decreases when the engine is at low speed and low load, and increases to an undesirable value when the engine is at high speed and high load. However, it is inconvenient to use when the operating speed is over a wide range. In order to solve these problems, a method has been used in which a part of the exhaust gas flowing into the turbine on the high-speed side of the engine is bypassed and sent to the turbine exhaust passage, but this alone does not meet the future requirements for automobile engines. This is insufficient to control a wide range of operating conditions.
また、例えば特開昭51―120314号に示される制
御装置のように排気ゲートバルブを制御するもの
も知られており、この装置は液体制御を用いてい
る。 Furthermore, a control device for controlling an exhaust gate valve is also known, such as the control device shown in Japanese Patent Application Laid-Open No. 120314/1983, and this device uses liquid control.
本発明は、広範囲な運転状況に対応させるのに
好適なターボチヤージヤ付内燃機関の過給圧力の
制御方法を提供することを目的とし、絞り弁の操
作によつて制御される往復動内燃機関の排気をタ
ービンへ送る排気通路と上記タービンを通過した
上記排気の排出路との間を連通するバイパス路に
設けられているバイパス弁を制御して上記往復動
内燃機関の過給圧力を制御する方法において、上
記往復動内燃機関の回転数と燃料供給量に応じた
信号とその運転状況における最適な過給圧力との
間の関係を求めておき、上記往復動内燃機関の回
転数と燃料供給量に応じた信号の刻刻の変化に応
じて上記の関係から上記の最適な過給圧力を求
め、この過給圧力となるよう上記バイパス弁を制
御することを特徴とするものである。 An object of the present invention is to provide a method for controlling the supercharging pressure of a turbocharged internal combustion engine suitable for adapting to a wide range of operating conditions. In the method of controlling the supercharging pressure of the reciprocating internal combustion engine by controlling a bypass valve provided in a bypass passage communicating between an exhaust passage that sends the exhaust gas to the turbine and a discharge passage of the exhaust gas that has passed through the turbine. , find the relationship between the signal corresponding to the rotational speed and fuel supply amount of the reciprocating internal combustion engine and the optimum boost pressure under the operating conditions, and calculate the relationship between the rotational speed and fuel supply amount of the reciprocating internal combustion engine. The present invention is characterized in that the above-mentioned optimum supercharging pressure is determined from the above-mentioned relationship in accordance with the minute changes of the corresponding signal, and the above-mentioned bypass valve is controlled to reach this supercharging pressure.
第１図は本発明のターボチヤージヤ付内燃機関
の過給圧力の制御方法の原理を説明するための線
図である。Ｘ軸は供給燃料量に応じた信号を示す
もので、デイーゼル機関においては燃料噴射ポン
プのラツク位置、ガソリン機関においては燃料噴
射時間等の値で示すことができる。Ｙ軸は機関の
回転数を示し、Ｚ軸は過給圧力の値を示してい
る。即ち、燃料量がx1、回転数がy1とすれば過給
圧力はz1となり、座標（x1，y1，z1）が特性点と
して表現される。 FIG. 1 is a diagram for explaining the principle of a method for controlling supercharging pressure of a turbocharged internal combustion engine according to the present invention. The X-axis shows a signal corresponding to the amount of fuel supplied, and can be shown as a value such as the easy position of the fuel injection pump in a diesel engine, or the fuel injection time in a gasoline engine. The Y-axis shows the engine speed, and the Z-axis shows the boost pressure value. That is, if the fuel amount is x 1 and the rotation speed is y 1 , the boost pressure is z 1 and the coordinates (x 1 , y 1 , z 1 ) are expressed as a characteristic point.
一般にターボチヤージヤ付内燃機関で排気全量
をタービンに送り込んだ場合の過給特性は記号
１，０，３，５の曲面で与えられる。即ちこの曲
面は或機関に或１台のターボチヤージヤを装着し
た場合の過給限界曲面を示すものであり、この曲
面以上の値を採ることはない。いま、低速・低負
荷運転時で過給圧力を低下させ、高負荷・高速運
転時に過給圧力を急速に上昇させる場合は、記号
３，５，６，７および破線で示された記号２，
５，６，７曲面で表現される。したがつて、曲面
１，０，３，５と曲面３，５，６，７とで囲まれ
た部分はターボチヤージヤの吐出圧力が機関の性
能上過剰な範囲であることを示している。即ち、
この範囲はタービンに供給する排気を直接タービ
ンの排気路にバイパスさせて良いことを示してい
る。 Generally, the supercharging characteristics of a turbocharged internal combustion engine when the entire exhaust gas is sent to the turbine are given by curved surfaces with symbols 1, 0, 3, and 5. That is, this curved surface indicates the supercharging limit curved surface when a certain turbocharger is installed in a certain engine, and the value will not exceed this curved surface. If you want to reduce the boost pressure during low-speed/low-load operation and rapidly increase the boost pressure during high-load/high-speed operation, use symbols 3, 5, 6, and 7, as well as symbols 2 and 2 indicated by broken lines.
It is expressed by 5, 6, and 7 curved surfaces. Therefore, the portion surrounded by curved surfaces 1, 0, 3, and 5 and curved surfaces 3, 5, 6, and 7 indicates that the discharge pressure of the turbocharger is in an excessive range in terms of engine performance. That is,
This range indicates that the exhaust gas supplied to the turbine may be bypassed directly to the turbine exhaust path.
第２図は本発明の一実施例を実施するためのタ
ーボチヤージヤの制御装置のブロツク線図であ
る。機関の回転速度を検出する速度検出装置１１
と、機関への供給燃料量を検出する燃料量検出装
置１２とは、夫々の伝達回路ａ，ｂを介して関数
発生器１３に接続されている。関数発生器１３は
第１図のｘ，ｙ値に相当する速度検出装置１１お
よび燃料量検出装置１２の信号を入力して処理
し、この運転状況に適した過給圧力を与えるよう
な信号を出力するもので、例えば回転ガバナより
の電気信号と燃料噴射弁の開弁時間信号とを入力
して第１図の３，５，６，７曲面内の制御信号を
出力し、その出力信号は伝達回路ｃを介して変換
器１４に与えられる。変換器１４ではバイパス弁
制御器１５の設定値を定める電気信号に変換さ
れ、伝達回路ｄを経てバイパス弁制御器１５に伝
達される。 FIG. 2 is a block diagram of a turbocharger control device for implementing one embodiment of the present invention. Speed detection device 11 that detects the rotational speed of the engine
and a fuel amount detection device 12 that detects the amount of fuel supplied to the engine are connected to a function generator 13 via respective transmission circuits a and b. The function generator 13 receives and processes the signals from the speed detection device 11 and the fuel amount detection device 12 corresponding to the x and y values shown in FIG. For example, it inputs an electric signal from a rotary governor and a valve opening time signal of a fuel injection valve, and outputs control signals within curved surfaces 3, 5, 6, and 7 in Fig. 1, and the output signal is The signal is applied to the converter 14 via the transmission circuit c. In the converter 14, it is converted into an electric signal that determines the setting value of the bypass valve controller 15, and is transmitted to the bypass valve controller 15 via the transmission circuit d.
一方機関２１に取付けたターボチヤージヤ１７
は回転軸１９の両端に固定した回転翼をもつてお
り、機関２１の排気によつて回転させられるター
ビン１８と吸気を圧送するコンプレツサ２０を構
成している。機関の排気通路に設けたバイパス路
入口にはバイパス弁体１６が設置され、このバイ
パス弁体１６にはバイパス弁制御器１５で移動さ
せられバイパス排気量を調節する。この結果ター
ビン１８を通過する排気量が変化して回転軸１９
の回転数を変化させ、コンプレツサ２０から機関
２１への過給吸気圧力を変化させる。即ち、機関
の回転数と供給燃料量（機関の運転状況）を入力
した関数発生器１３はこのターボチヤージヤ１７
を備えた機関を好適に運転させるように設定した
信号値によつてバイパス弁制御器１５を作動さ
せ、コンプレツサ過給圧力を刻々自動的に制御し
ている。なお、このコンプレツサ２０よりの吸気
吐出路とバイパス弁制御器１５との間には圧力伝
達配管２２が接続されており、過給圧力の変動を
フイードバツクして自動的に補正調整している。
しかしこの場合は関数発生器１３の設定値には影
響を与えない。 On the other hand, the turbocharger 17 attached to the engine 21
has rotary blades fixed to both ends of a rotating shaft 19, and constitutes a turbine 18 rotated by exhaust gas from an engine 21 and a compressor 20 that compresses intake air. A bypass valve body 16 is installed at a bypass passage inlet provided in an exhaust passage of the engine, and is moved by a bypass valve controller 15 to adjust the amount of bypass exhaust. As a result, the amount of exhaust gas passing through the turbine 18 changes and the rotating shaft 19
The rotation speed of the compressor 20 is changed to change the supercharging intake pressure from the compressor 20 to the engine 21. That is, the function generator 13 into which the engine speed and the amount of fuel to be supplied (engine operating status) is inputted is the turbocharger 17.
The bypass valve controller 15 is operated according to a signal value set to suitably operate the engine equipped with the compressor, and the compressor supercharging pressure is automatically controlled moment by moment. A pressure transmission pipe 22 is connected between the intake and discharge passage from the compressor 20 and the bypass valve controller 15, and feeds back fluctuations in supercharging pressure to automatically correct and adjust the pressure.
However, in this case, the set value of the function generator 13 is not affected.
以上実施例の制御装置は、ターボチヤージヤ付
内燃機関の運転条件に適応した過給圧力の吸気を
機関に供給するように制御装置を作動させる関数
発生器を設けているので、内燃機関を好適な状態
で運転させると共に、燃料の経済性と排気組成を
改善させるという効果をもつている。 The control device of the embodiment described above is provided with a function generator that operates the control device to supply the engine with intake air at a supercharging pressure adapted to the operating conditions of the turbocharged internal combustion engine. This has the effect of improving fuel economy and exhaust composition.
上記実施例は自動車用のターボチヤージヤ付内
燃機関として説明したが、船舶用のターボチヤー
ジヤ付内燃機関等にも適用することができる。 Although the above embodiment has been described as an internal combustion engine with a turbocharger for an automobile, it can also be applied to an internal combustion engine with a turbocharger for a ship.
本発明のターボチヤージヤ付内燃機関の過給圧
力の制御方法は、広範囲な機関運転状態に適合し
た過給圧力を供給して好適な運転を行わせること
ができるという効果をもつている。 The method of controlling the supercharging pressure of a turbocharged internal combustion engine according to the present invention has the effect of supplying a supercharging pressure that is suitable for a wide range of engine operating conditions to ensure suitable operation.
第１図は本発明のターボチヤージヤ付内燃機関
の過給圧力の制御方法の原理を説明するための線
図、第２図は本発明の一実施例を実施するための
ターボチヤージヤの制御装置のブロツク線図であ
る。
１１……速度検出装置、１２……燃料量検出装
置、１３……関数発生器、１５……バイパス弁制
御器、１６……バイパス弁体、１７……ターボチ
ヤージヤ、１８……タービン、２０……コンプレ
ツサ、２１……往復動内燃機関。
FIG. 1 is a diagram for explaining the principle of the method for controlling supercharging pressure of an internal combustion engine with a turbocharger according to the present invention, and FIG. 2 is a block diagram of a turbocharger control device for carrying out an embodiment of the present invention. It is a diagram. 11...Speed detection device, 12...Fuel amount detection device, 13...Function generator, 15...Bypass valve controller, 16...Bypass valve body, 17...Turbo charger, 18...Turbine, 20... Compressor, 21...Reciprocating internal combustion engine.
Claims (1)
機関の排気をタービンへ送る排気通路と上記ター
ビンを通過した上記排気の排出路との間を連通す
るバイパス路に設けられているバイパス弁を制御
して上記往復動内燃機関の過給圧力を制御する方
法において、上記往復動内燃機関の回転数と燃料
供給量に応じた信号とその運転状況における最適
な過給圧力との間の関係を求めておき、上記往復
動内燃機関の回転数と燃料供給量に応じた信号の
刻刻の変化に応じて上記の関係から上記の最適な
過給圧力を求め、この過給圧力となるよう上記バ
イパス弁を制御することを特徴とするターボチヤ
ージヤ付内燃機関の過給圧力の制御方法。 ２ 上記往復動内燃機関が、自動車用内燃機関で
ある特許請求の範囲第１項記載のターボチヤージ
ヤ付内燃機関の過給圧力の制御方法。[Scope of Claims] 1. Provided in a bypass passage that communicates between an exhaust passage that sends the exhaust gas of a reciprocating internal combustion engine to a turbine, which is controlled by the operation of a throttle valve, and a discharge passage for the exhaust gas that has passed through the turbine. In the method of controlling the boost pressure of the reciprocating internal combustion engine by controlling the bypass valve, the signal corresponds to the rotation speed and fuel supply amount of the reciprocating internal combustion engine, and the optimal boost pressure under the operating conditions Find the relationship between the A method for controlling boost pressure of an internal combustion engine with a turbocharger, comprising controlling the bypass valve so as to maintain the boost pressure. 2. A method for controlling supercharging pressure of a turbocharged internal combustion engine according to claim 1, wherein the reciprocating internal combustion engine is an internal combustion engine for an automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10114778A JPS5529033A (en) | 1978-08-18 | 1978-08-18 | Turbocharger controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10114778A JPS5529033A (en) | 1978-08-18 | 1978-08-18 | Turbocharger controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5529033A JPS5529033A (en) | 1980-03-01 |
| JPS629723B2 true JPS629723B2 (en) | 1987-03-02 |
Family
ID=14292951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10114778A Granted JPS5529033A (en) | 1978-08-18 | 1978-08-18 | Turbocharger controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5529033A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167814A (en) * | 1980-05-28 | 1981-12-23 | Hitachi Ltd | Apparatus and method for controlling supercharger of internal combustion engine |
| DE3032218C2 (en) * | 1980-08-27 | 1982-06-16 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Piston internal combustion engine with an exhaust gas turbocharger |
| SE458290B (en) * | 1981-02-19 | 1989-03-13 | Volvo Ab | DEVICE FOR CONTROL OF CHARGING PRESSURE IN A TURBOLED FORMING ENGINE |
| DE3129686A1 (en) * | 1981-07-28 | 1983-02-17 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR CONTROLLING THE CHARGE PRESSURE IN A CHARGED INTERNAL COMBUSTION ENGINE |
| JPS58170826A (en) * | 1982-03-31 | 1983-10-07 | Aisin Seiki Co Ltd | Supercharge system |
| JPS58152520U (en) * | 1982-04-06 | 1983-10-12 | 日産自動車株式会社 | Turbo charger control device |
| JPS58192942A (en) * | 1982-05-07 | 1983-11-10 | Toyota Motor Corp | Method for controlling engine output |
| JPS62193134U (en) * | 1986-05-30 | 1987-12-08 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50160625A (en) * | 1974-05-06 | 1975-12-26 | ||
| JPS51120314A (en) * | 1975-03-31 | 1976-10-21 | Garrett Corp | Method and apparatus for turbocharger control |
-
1978
- 1978-08-18 JP JP10114778A patent/JPS5529033A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50160625A (en) * | 1974-05-06 | 1975-12-26 | ||
| JPS51120314A (en) * | 1975-03-31 | 1976-10-21 | Garrett Corp | Method and apparatus for turbocharger control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5529033A (en) | 1980-03-01 |
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