JPH0515899B2 - - Google Patents
Info
- Publication number
- JPH0515899B2 JPH0515899B2 JP60143858A JP14385885A JPH0515899B2 JP H0515899 B2 JPH0515899 B2 JP H0515899B2 JP 60143858 A JP60143858 A JP 60143858A JP 14385885 A JP14385885 A JP 14385885A JP H0515899 B2 JPH0515899 B2 JP H0515899B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle area
- scavenging pressure
- signal
- detector
- supercharger
- 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
- 230000002000 scavenging effect Effects 0.000 claims description 50
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は内燃機関の過給機制御装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a supercharger control device for an internal combustion engine.
第４図に従来の過給機をそなえた内燃機関を示
す。シリンダ０１に導かれた空気が高温高圧に圧
縮されたところへ燃料噴射弁０２から燃料が噴射
されると、燃料は爆発して燃焼する。燃焼により
生じた高温の排気ガスのエネルギは排気静圧管０
３を通つて過給機に導かれる。静圧管０３よりの
排気エネルギはノズル０４によつて運動エネルギ
に変換された過給機タービン０５を回転させロー
タ０６に動力を伝える。この動力によりブロア０
７が回わされ外気を圧縮し、この圧縮空気が掃気
トランク０９に導かれる。またノズル０４、ター
ビン０５を通過した排気ガスは排気ガスエコノマ
イザ１０に導かれ、ここでさらに熱交換が行われ
ることにより排気ガスエネルギの有効利用が行わ
れる。
FIG. 4 shows an internal combustion engine equipped with a conventional supercharger. When fuel is injected from the fuel injection valve 02 into the air introduced into the cylinder 01 and compressed to high temperature and pressure, the fuel explodes and burns. The energy of the high temperature exhaust gas generated by combustion is transferred to the exhaust static pressure pipe 0.
3 and is led to the supercharger. The exhaust energy from the static pressure pipe 03 is converted into kinetic energy by the nozzle 04, which rotates the supercharger turbine 05 and transmits power to the rotor 06. This power allows the blower to
7 is rotated to compress the outside air, and this compressed air is led to the scavenging trunk 09. Further, the exhaust gas that has passed through the nozzle 04 and the turbine 05 is guided to the exhaust gas economizer 10, where heat exchange is further performed to effectively utilize the exhaust gas energy.
ところが従来の内燃機関におけるノズルはその
ノズル面積を変更することができず、機関よりの
排ガスの流量は一意的に決められ、その作動線を
変更させることができなかつた。
However, the area of the nozzle in a conventional internal combustion engine cannot be changed, the flow rate of exhaust gas from the engine is uniquely determined, and its operating line cannot be changed.
そのためある負荷に最適のノズルを選定した場
合、その他の負荷における掃気圧力、掃気量は過
給機の総合効率に大きく依存し、総合効率のよい
機関負荷の状態では、機関に必要以上の掃気圧
力、掃気量が与えられることになり、これが機関
からの排気ガス温度の低下を招いていた。排気ガ
ス温度の低下は排出ガスエコノマイザの使用上好
ましくない。 Therefore, when selecting the most suitable nozzle for a certain load, the scavenging pressure and amount of scavenging air at other loads greatly depend on the overall efficiency of the supercharger. , the amount of scavenging air was given, which led to a drop in the temperature of the exhaust gas from the engine. A decrease in exhaust gas temperature is unfavorable when using an exhaust gas economizer.
本発明の目的は、前記従来装置の欠点を解消
し、機関に与えられる余分の掃気圧力、掃気量を
抑制し、排気ガス温度の低下を回避できる過給機
を提供するにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a supercharger that eliminates the drawbacks of the conventional devices, suppresses excess scavenging pressure and amount of scavenged air applied to the engine, and avoids a drop in exhaust gas temperature.
本発明に係る過給機制御装置は、可変ノズル面
積を持つた過給機において、機関回転数検出器と
ラツク位置検出器からの信号を入力して出力演算
器で機関出力を出力し、該出力演算器とラツク位
置検出器からの信号を入力して掃気圧力設定器に
より必要掃気圧力を出力し、該掃気圧力設定器と
掃気圧検出器からの信号を入力して掃気圧力補正
器によりその偏差を出力し、該掃気圧力補正器と
出力演算器との信号を入力してノズル面積設定器
により必要なノズル面積を出力し、該ノズル面積
設定器とノズル面積検知器からの信号を入力して
ノズル面積補正器によりノズル面積の補正量を出
力し、この面積補正量が入力されたノズル面積調
整器により、タービンノズル面積を調整して前記
目的を達成できるようにしたものである。
A supercharger control device according to the present invention is a supercharger having a variable nozzle area, inputs signals from an engine rotation speed detector and a rack position detector, outputs an engine output using an output calculator, and The signals from the output calculator and the rack position detector are input, and the scavenging pressure setting device outputs the required scavenging pressure.The signals from the scavenging pressure setting device and the scavenging pressure detector are input, and the scavenging pressure corrector outputs the required scavenging pressure. Outputs the deviation, inputs signals from the scavenging pressure corrector and output calculator, outputs the required nozzle area by the nozzle area setting device, and inputs signals from the nozzle area setting device and nozzle area detector. The nozzle area corrector outputs a nozzle area correction amount, and the nozzle area adjuster to which this area correction amount is input adjusts the turbine nozzle area to achieve the above objective.
可変ノズル面積の過給機において、その面積の
コントロールをコンピユータで行ない、必要以上
の掃気圧力の上昇と空気量の増加による排出ガス
温度の低下に対応させ排気ガスエコノマイザの効
率低下を緩和するようにしたものである。
In a turbocharger with a variable nozzle area, the area is controlled by a computer to cope with the drop in exhaust gas temperature due to an increase in scavenging pressure and air volume that exceeds the necessary level, and to alleviate the decrease in efficiency of the exhaust gas economizer. This is what I did.
以下第１〜４図を参照して本発明の一実施例に
ついて説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第１図は本発明に係る過給機制御装置、第２図
はエンジンのラツク位置RCをパラメータとした
掃気圧力pSと機関出力Ｌの関係線図、第３図は
過給機のノズル面積ANをパラメータとた掃気圧
力pSと機関出力Ｌの関係線図、第４図は従来の
ターボ過給機付内燃機関の概略説明図である。 Fig. 1 is a supercharger control device according to the present invention, Fig. 2 is a relationship diagram between scavenging pressure pS and engine output L using the engine easy position R C as a parameter, and Fig. 3 is a nozzle area of the supercharger. FIG. 4 is a diagram illustrating the relationship between scavenging pressure pS and engine output L using A N as a parameter, and is a schematic explanatory diagram of a conventional internal combustion engine with a turbo supercharger.
第１図に示すように機関運転中の状態量のう
ち、掃気圧力検出器３は掃気圧力pSを、ラツク位
置検出器４はラツク位置RCを、回転数検出器５
は機関回転数NEを検出する。各種検出器よりの
信号はコンピユータ１００内でＡ／Ｄ変換器１０
１〜１０３によりデジタル値に変換される。 As shown in FIG. 1, among the state quantities during engine operation, the scavenging pressure detector 3 detects the scavenging pressure p S , the rack position detector 4 detects the rack position R C , and the rotation speed detector 5
detects the engine speed N E. Signals from various detectors are sent to an A/D converter 10 within the computer 100.
1 to 103 are converted into digital values.
出力演算器１０６は機関回転数NE、ラツク位
置RCからその時の機関出力Ｌを演算する。 The output calculator 106 calculates the engine output L at that time from the engine rotational speed N E and the rack position R C .
掃気圧力設定器１０７は第２図に示すpS＝ｆ
（RC，Ｌ）の関係から必要な掃気圧力pSを設定す
る。 The scavenging pressure setting device 107 is set to p S =f as shown in FIG.
Set the required scavenging pressure p S from the relationship (R C , L).
掃気圧力補正器１０８は掃気圧力検出器３で検
出された掃気圧力Psと掃気圧力の設定値Ps′とか
ら両者の偏差を算出する。 The scavenging pressure corrector 108 calculates the deviation between the scavenging pressure Ps detected by the scavenging pressure detector 3 and the set value Ps' of the scavenging pressure.
ノズル面積設定器１０９は機関出力Ｌと掃気圧
力補正器１０８からの出力とから第３図に示すノ
ズル面積AN＝ｆ（pS，Ｌ）の関係式から必要ノズ
ル面積を演算する。 The nozzle area setter 109 calculates the required nozzle area from the engine output L and the output from the scavenging pressure corrector 108 from the relational expression of nozzle area A N =f( ps , L) shown in FIG.
ノズル面積補正器１１０は、ノズル面積検知器
６からアナログ→デジタル変換器（Ａ／Ｄ変換
器）１０４を通じて得られた現在のノズル面積と
ノズル面積設定器１０９から得られたノズル面積
の設定値からその偏差を演算し出力する。 The nozzle area corrector 110 calculates the nozzle area from the current nozzle area obtained from the nozzle area detector 6 through the analog to digital converter (A/D converter) 104 and the nozzle area setting value obtained from the nozzle area setting device 109. The deviation is calculated and output.
この偏差はデジタル→アナログ変換器１０５に
よりアナログ化されノズル面積調整器７はこのア
ナログ量により過給機２のノズル面積を変更す
る。 This deviation is converted into an analog by the digital to analog converter 105, and the nozzle area adjuster 7 changes the nozzle area of the supercharger 2 based on this analog amount.
この時の掃気圧力を検出器３により検出し、
Ａ／Ｄ変換器１０１にてデジタル信号に変換し、
掃気圧力設定器１０７に設定された掃気圧力との
偏差を掃気圧力補正器１０８によつて補正し、フ
イードバツクをかける。 The scavenging pressure at this time is detected by the detector 3,
Convert it into a digital signal with an A/D converter 101,
The deviation from the scavenging pressure set in the scavenging pressure setting device 107 is corrected by the scavenging pressure corrector 108, and feedback is applied.
次に前記実施例の作用について説明する。 Next, the operation of the above embodiment will be explained.
エンジン１の回転数NEとラツク目盛位置RCの
検出出力が出力演算器１０６に入力されエンジン
出力を演算し、この出力Ｌとラツク目盛位置RC
の出力信号を掃気圧力設定器１０７に入力して必
要掃気圧力p′Sを設定し、この掃気設定圧力p′Sと
エンジン１の掃気圧力pSを掃気圧力補正器１０８
に入力して偏差を出力する。この掃気圧力補正器
１０８からの出力と機関演算器１０６よりの出力
Ｌをノズル面積設定器１０９に入力し、ノズル面
積設定値ANを出力する。この出力ANと過給機Ｚ
よりのノズル面積測定値をノズル面積補正器１１
０に入力して偏差ΔANを演算し、この偏差ΔAN
をノズル面積調整器に入力し過給機２のノズル面
積を変更することによりエンジンの掃気圧力を所
要の値に維持することができる。さらにこの時の
エンジン掃気圧力pSを掃気圧力検出器で検出し前
記回路に入力にフイードバツクをかける。 The detected outputs of the rotational speed N E of the engine 1 and the easy scale position R C are input to the output calculator 106 to calculate the engine output, and this output L and the easy scale position R C
The output signal of is input to the scavenging pressure setting device 107 to set the required scavenging pressure p' S , and this scavenging set pressure p' S and the scavenging pressure p S of the engine 1 are input to the scavenging pressure compensator 108.
and output the deviation. The output from the scavenging pressure corrector 108 and the output L from the engine calculator 106 are input to a nozzle area setter 109, which outputs a nozzle area setting value A N. This output A N and supercharger Z
The measured nozzle area value is calculated by the nozzle area corrector 11.
0, calculate the deviation ΔA N , and calculate this deviation ΔA N
By inputting this into the nozzle area adjuster and changing the nozzle area of the supercharger 2, the scavenging pressure of the engine can be maintained at a required value. Further, the engine scavenging pressure p S at this time is detected by a scavenging pressure detector and feedback is applied to the input to the circuit.
前述のとおり本発明の過給機制御装置は、機関
の回転数、ラツク目盛（負荷）、掃気圧力を検出
器を介して信号として取り出し、これらの信号に
より過給機のタービンノズル面積をコンピユータ
で自動的に制御するようにしたので、必要以上の
掃気圧力の上昇、空気量の増加による排気ガス温
度の低下を緩和することができ、排気ガスエコノ
マイザの効率の悪化を回避することができる。
As mentioned above, the supercharger control device of the present invention extracts the engine speed, easy scale (load), and scavenging air pressure as signals through the detector, and uses these signals to calculate the turbine nozzle area of the supercharger using a computer. Since the control is performed automatically, it is possible to alleviate the excessive increase in scavenging pressure and the decrease in exhaust gas temperature due to an increase in the amount of air, and it is possible to avoid deterioration in the efficiency of the exhaust gas economizer.
第１図は本発明に係る過給機制御装置のブロツ
ク線図、第２図はpS＝ｆ（RC，Ｌ）を示す線図、
第３図はAN＝ｆ（ps，Ｌ）を示す線図、第４図は
従来の過給機を備えた内燃機関の概略説明図であ
る。
１……エンジン、２……過給機、３……掃気圧
力検出器、４……ラツク位置検出器、５……回転
数検出器、６……ノズル面積検知器、７……ノズ
ル面積調整器、１００……コンピユータ、１０６
……出力演算器、１０７……掃気圧力設定器、１
０８……掃気圧力補正器、１０９……ノズル面積
設定器、１１０……ノズル面積補正器。
FIG. 1 is a block diagram of a supercharger control device according to the present invention, FIG. 2 is a diagram showing p S =f(R C , L),
FIG. 3 is a diagram showing A N =f( ps , L), and FIG. 4 is a schematic explanatory diagram of an internal combustion engine equipped with a conventional supercharger. 1... Engine, 2... Supercharger, 3... Scavenging pressure detector, 4... Rack position detector, 5... Rotation speed detector, 6... Nozzle area detector, 7... Nozzle area adjustment Equipment, 100... Computer, 106
...Output calculator, 107...Scavenging pressure setting device, 1
08...Scavenging pressure corrector, 109...Nozzle area setter, 110...Nozzle area corrector.
Claims (1)
機関において、機関回転数検出器からの回転数検
出信号およびラツク位置検出器からのラツク位置
検出信号を入力してこれら検出信号から機関出力
を算出する出力演算器と、この出力演算器からの
信号およびラツク位置検出器からの信号を入力し
て必要掃気圧力を算出する掃気圧力設定器と、こ
の掃気圧力設定器の掃気圧力設定信号と掃気圧力
検出器からの掃気圧力検出信号を入力して両者の
偏差を算出する掃気圧力補正器と、前記出力演算
器からの信号と掃気圧力補正器からの信号を入力
して必要なノズル面積を算出するノズル面積設定
器と、このノズル面積設定器からの信号とノズル
面積検知器からのノズル面積検出信号を入力して
ノズル面積の補正量を算出するノズル面積補正器
と、前記補正量が入力され過給機ノズルの面積を
制御する制御信号を出力するノズル面積調整器と
を備えた過給機制御装置。1. In an internal combustion engine equipped with a supercharger with a variable nozzle area, input the rotation speed detection signal from the engine rotation speed detector and the rack position detection signal from the rack position detector, and calculate the engine output from these detection signals. An output calculator to calculate, a scavenging pressure setting device to calculate the required scavenging pressure by inputting the signal from this output calculator and the signal from the rack position detector, and the scavenging pressure setting signal of this scavenging pressure setting device and the scavenging pressure setting device. A scavenging pressure compensator inputs the scavenging pressure detection signal from the pressure detector and calculates the deviation between the two, and calculates the required nozzle area by inputting the signal from the output calculator and the signal from the scavenging pressure compensator. a nozzle area setter that inputs a signal from the nozzle area setter and a nozzle area detection signal from a nozzle area detector to calculate a nozzle area correction amount; A supercharger control device including a nozzle area adjuster that outputs a control signal to control the area of a supercharger nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60143858A JPS627933A (en) | 1985-07-02 | 1985-07-02 | Supercharger control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60143858A JPS627933A (en) | 1985-07-02 | 1985-07-02 | Supercharger control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS627933A JPS627933A (en) | 1987-01-14 |
| JPH0515899B2 true JPH0515899B2 (en) | 1993-03-02 |
Family
ID=15348606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60143858A Granted JPS627933A (en) | 1985-07-02 | 1985-07-02 | Supercharger control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS627933A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715237A1 (en) * | 1997-04-12 | 1998-10-15 | Daimler Benz Ag | Method for controlling or regulating the charge air mass flow of an internal combustion engine with an exhaust gas turbocharger with adjustable turbine geometry |
| DE19812691A1 (en) * | 1998-03-23 | 1999-09-30 | Siemens Ag | IC engine boost-pressure control dynamics improvement device |
| JP3606112B2 (en) * | 1999-06-17 | 2005-01-05 | 日産自動車株式会社 | Diesel engine control device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929727A (en) * | 1982-08-12 | 1984-02-17 | Mazda Motor Corp | Controller for supercharger of engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59115802U (en) * | 1983-01-25 | 1984-08-04 | いすゞ自動車株式会社 | Variable displacement turbocharger nozzle vane drive device |
-
1985
- 1985-07-02 JP JP60143858A patent/JPS627933A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929727A (en) * | 1982-08-12 | 1984-02-17 | Mazda Motor Corp | Controller for supercharger of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS627933A (en) | 1987-01-14 |
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