JPS6238544B2 - - Google Patents
Info
- Publication number
- JPS6238544B2 JPS6238544B2 JP58118560A JP11856083A JPS6238544B2 JP S6238544 B2 JPS6238544 B2 JP S6238544B2 JP 58118560 A JP58118560 A JP 58118560A JP 11856083 A JP11856083 A JP 11856083A JP S6238544 B2 JPS6238544 B2 JP S6238544B2
- Authority
- JP
- Japan
- Prior art keywords
- boost pressure
- exhaust
- engine
- acceleration
- waste gate
- 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
- 230000001133 acceleration Effects 0.000 claims description 27
- 239000002699 waste material Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010420 art technique Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Description
【発明の詳細な説明】
本発明は、排気ガスによつて駆動される過給
機、つまり排気ターボ過給機を備えた内燃機関に
おいて、その加速性能を向上するように制御する
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling an internal combustion engine equipped with a supercharger driven by exhaust gas, that is, an exhaust turbo supercharger, to improve its acceleration performance. be.
排気ターボ過給機付きの内燃機関において、そ
の過給圧がある値を越えないように制御するため
に、排気ターボ過給機における排気タービンに対
して設けた排気バイパス通路に、ブロワー圧縮機
下流の過給圧に関連したウエストゲート弁を設
け、過給圧が前記通常設定過給圧に達するとウエ
ストゲート弁を開き、排気ガスをバイパスさせる
ことによつて、過給圧のそれ以上の上昇を防止す
るようにすることは良く知られている。 In an internal combustion engine equipped with an exhaust turbo supercharger, in order to control the supercharging pressure so that it does not exceed a certain value, an exhaust bypass passage provided for the exhaust turbine in the exhaust turbo supercharger is installed downstream of the blower compressor. A wastegate valve related to the boost pressure is provided, and when the boost pressure reaches the normal setting boost pressure, the wastegate valve is opened and the exhaust gas is bypassed, thereby preventing further increase in the boost pressure. It is well known to prevent this.
しかし、排気ターボ過給機は、機関の加速時に
排気タービン及びブロワー圧縮機の慣性により、
回転の立上りが遅れて過給圧の上昇が遅く、且つ
過給圧を前記のように制御するため、十分な加速
性能が得られない欠点がある。 However, when the engine accelerates, the exhaust turbo supercharger suffers from the inertia of the exhaust turbine and blower compressor.
Since the start of rotation is delayed and the boost pressure rises slowly, and the boost pressure is controlled as described above, there is a drawback that sufficient acceleration performance cannot be obtained.
そこで先行技術としての特開昭57−146023号及
び特開昭57−157017号公報は、機関の加速に際し
てアクセルペタルを急速に踏み込んだとき前記ウ
エストゲート弁を一定時間だけ閉状態に保持する
ことにより、過給圧を適宜時間の間だけ前記ウエ
ストゲート弁の通常設定過給圧以上に高めて加速
性能を向上することを提案している。 Therefore, as prior art, Japanese Patent Application Laid-Open No. 57-146023 and Japanese Patent Application Laid-Open No. 57-157017 disclose that when the accelerator pedal is rapidly depressed when accelerating the engine, the waste gate valve is kept closed for a certain period of time. proposes to improve acceleration performance by increasing the boost pressure above the normally set boost pressure of the wastegate valve for an appropriate period of time.
しかし、これらの先行技術のものは、いずれも
前記加速時における過給圧の上昇を、機関に対す
る負荷とは全く無関係に行うようにしているの
で、機関の出力軸と負荷側との動力伝達を切つた
状態でアクセルペダルを急に踏み込んだとき、つ
まり空ふかしのとき、機関の回転数が過給圧の上
昇によつて著しく増加することになつて、機関の
耐久性を損なうのであつた。 However, in all of these prior art techniques, the boost pressure is increased during acceleration completely independent of the load on the engine, so power transmission between the output shaft of the engine and the load side is affected. When the accelerator pedal is suddenly depressed with the engine turned off, that is, when the engine is revved up, the engine speed increases significantly due to the increase in supercharging pressure, which impairs the durability of the engine.
本発明は、排気ターボ過給式内燃機関における
加速時に、前記先行技術のように過給圧を適宜時
間の間だけ通常設定過給圧より高くすることによ
り加速性を向上する場合において、機関から負荷
側への動力伝達を遮断しているときには、過給圧
の通常設定過給圧からの上昇制御を解除し、換言
すれば空ふかし時には過給圧が上昇しないように
することにより、安全性を向上したものである。 The present invention provides a method for improving acceleration performance in an exhaust turbocharged internal combustion engine by increasing the boost pressure higher than the normally set boost pressure for an appropriate period of time as in the prior art. When the power transmission to the load side is cut off, the control to increase the boost pressure from the normally set boost pressure is canceled.In other words, by preventing the boost pressure from increasing when the engine is running low, safety is improved. It is an improved version.
以下本発明を実施例の図面について説明する
と、図において１は吸気マニホールド２及び排気
マニホールド３を有する多気筒内燃機関、４は排
気タービン５とブロワー圧縮機６とを直結した排
気ターボ過給機を示し、該排気ターボ過給機４に
おけるブロワー圧縮機６の吐出側と前記吸気マニ
ホールド２とをつなぐ過給通路７には、脈動消去
用のサージタンク８とアクセルペダル１７に連動
するスロツトル弁９付き気化器１０とがサージタ
ンク８を上流側にして設けられ、ブロワー圧縮機
６の吸入側にはエアクリーナ１１が接続され、ま
た、排気ターボ過給機４における排気タービン５
の入口側には排気通路１２を介して前記排気マニ
ホールド３が、排気タービン５の出口側には排気
浄化装置を備えた排気管１３が各々接続されてい
る。前記機関１の出力軸１８には主クラツチ１９
を介して変速機構２０が連結されている。１４は
前記排気通路１２と排気管１３との間に排気ター
ビン５に対して設けた排気バイパス通路、１５は
該排気バイパス通路１４中に設けたウエストゲー
ト弁を示し、このウエストゲート弁１５は駆動手
段１６によつて開閉作動するもので、これが開作
動すると排気タービン５に対する排気ガスバイパ
ス流量が多くなり排気ターボ過給機４の駆動力が
低減して過給圧が下がり、またウエストゲート弁
１５の閉作動によつて、過給圧が上昇するように
構成されている。 The present invention will be explained below with reference to drawings of embodiments. In the drawings, 1 is a multi-cylinder internal combustion engine having an intake manifold 2 and an exhaust manifold 3, and 4 is an exhaust turbo supercharger in which an exhaust turbine 5 and a blower compressor 6 are directly connected. The supercharging passage 7 connecting the discharge side of the blower compressor 6 of the exhaust turbo supercharger 4 and the intake manifold 2 is equipped with a surge tank 8 for eliminating pulsation and a throttle valve 9 interlocked with an accelerator pedal 17. A carburetor 10 is provided with the surge tank 8 upstream, an air cleaner 11 is connected to the suction side of the blower compressor 6, and an exhaust turbine 5 in the exhaust turbo supercharger 4 is connected to the suction side of the blower compressor 6.
The exhaust manifold 3 is connected to the inlet side of the exhaust turbine 5 via an exhaust passage 12, and the exhaust pipe 13 equipped with an exhaust purification device is connected to the outlet side of the exhaust turbine 5. A main clutch 19 is connected to the output shaft 18 of the engine 1.
A transmission mechanism 20 is connected via the. Reference numeral 14 indicates an exhaust bypass passage provided for the exhaust turbine 5 between the exhaust passage 12 and the exhaust pipe 13, and 15 indicates a wastegate valve provided in the exhaust bypass passage 14. This wastegate valve 15 is not driven. When the means 16 opens and closes, the exhaust gas bypass flow to the exhaust turbine 5 increases, the driving force of the exhaust turbocharger 4 decreases, and the supercharging pressure decreases, and the wastegate valve 15 The structure is such that the supercharging pressure increases when the valve is closed.
２１は機関に設けた回転センサー、２２はサー
ジタンク８又は過給通路７に設けた過給圧センサ
ー、２３はアクセルペダル１７又はスロツトル弁
９に設けたスロツトル開度センサー、２４は前記
主クラツチ１９を切るとONになる主クラツチス
イツチ、２５は前記変速機構２０をニユートラル
したときONになるニユートラルスイツチ、そし
て２６は制御回路を各々示し、この制御回路２６
は、以下に述べるように、前記回転センサー２
１、過給圧センサー２２、スロツトル開度センサ
ー２３からの信号、更には、主クラツチスイツチ
２４及びニユートラルスイツチ２５に対するオア
回路２７からの信号を、入力インターフエース２
８を介して入力とし、これらの信号に応じて出力
インターフエース２９を介して前記ウエストゲー
ト弁１５の駆動手段１６に出力信号を出して、ウ
エストゲート弁１４を開閉制御するものである。 21 is a rotation sensor provided in the engine, 22 is a boost pressure sensor provided in the surge tank 8 or the supercharging passage 7, 23 is a throttle opening sensor provided in the accelerator pedal 17 or throttle valve 9, and 24 is the main clutch 19. 25 is a neutral switch that is turned on when the transmission mechanism 20 is put into neutral; and 26 is a control circuit.
As described below, the rotation sensor 2
1. Signals from the boost pressure sensor 22, throttle opening sensor 23, and signals from an OR circuit 27 for the main clutch switch 24 and neutral switch 25 are input to the input interface 2.
In response to these signals, output signals are output to the driving means 16 of the waste gate valve 15 via the output interface 29 to control the opening and closing of the waste gate valve 14.
まず、アクセルペタル１７の踏み込みによるス
ロツトル弁開速度θ１を、機関の加速状態に相当
する開速度θ２と比較し、θ１がθ２より小さい
ときは加速状態ではないから、次に機関の回転数
Ｎ１と過給圧Ｐ１とを検出し、この過給圧Ｐ１が
回転数Ｎ１に相当する通常設定過給圧Pn１と等
しいか否かを比較し、Ｐ１がPn１と等しいとき
はウエストゲート弁１５の開閉を行わないが、Ｐ
１がPn１と等しくないときには、ウエストゲー
ト弁１５に過給圧をPn１にする旨の過給圧補正
信号を出してウエストゲート弁１５を開閉するこ
とにより、過給圧を通常設定過給圧に等しくなる
ように制御するのである。 First, the throttle valve opening speed θ1 caused by depressing the accelerator pedal 17 is compared with the opening speed θ2, which corresponds to the acceleration state of the engine. If θ1 is smaller than θ2, it is not in an acceleration state, so next, the engine rotation speed N1 and The system detects the supercharging pressure P1 and compares whether this supercharging pressure P1 is equal to the normally set supercharging pressure Pn1 corresponding to the rotational speed N1, and when P1 is equal to Pn1, opens and closes the waste gate valve 15. I won't do it, but P
1 is not equal to Pn1, a boost pressure correction signal indicating that the boost pressure is set to Pn1 is sent to the waste gate valve 15, and the waste gate valve 15 is opened and closed, thereby changing the boost pressure to the normally set boost pressure. It is controlled so that they are equal.
そして、前記θ１とθ２との比較においてθ１
がθ２と等しいかθ２以上のときは加速状態であ
るから、そのときの回転数Ｎ２と過給圧Ｐ２とを
検出し、次いでＰ２を、機関の加速時の加速最高
設定過給圧Paと比較し、Ｐ２がPaと等しいかPa
より大きいときには、Ｎ２に相当する加速設定過
給圧Pa１とＰ２と等しいか否かを比較する。 In the comparison between θ1 and θ2, θ1
When is equal to θ2 or greater than θ2, it is in an acceleration state, so detect the rotational speed N2 and boost pressure P2 at that time, and then compare P2 with the maximum acceleration setting boost pressure Pa during engine acceleration. and whether P2 is equal to Pa or Pa
If it is larger, the acceleration setting supercharging pressure Pa1 corresponding to N2 is compared to see if it is equal to P2.
この比較においてＰ２がPa１に等しいときに
はウエストゲート弁１５の開閉を行なわないが、
Ｐ２がPa１と等しくないときには、ウエストゲ
ート弁１５に過給圧をPa１にする旨の過給圧補
正信号を出してウエストゲート弁１５を開閉する
ことにより、過給圧を前記通常設定過給圧より高
い加速設定過給圧に上昇制御して、機関の加速性
能を向上する一方、前記Ｐ２とPaとの比較にお
いて、Ｐ２がPaを越えているときには、そのと
きの回転数Ｎ３と過給圧Ｐ３とを検出し、次いで
Ｐ３を通常設定最高過給圧Pnと比較する。Ｐ３
がPnと等しいかPnより小さいときには、ウエス
トゲート弁１５の開閉を行なわないが、Ｐ３が
Pnを越えているときには、Ｎ３に相当する加速
設定過給圧Pa２と等しいえ否かを比較し、等し
いときウエストゲート弁１５を開閉作動しない
が、Ｐ３がPa２と等しくないとき、過給圧を前
記通常設定最高過給圧Pnにする旨の過給圧補正
信号を出してウエストゲート弁１５を開閉するこ
とにより、過給圧が前記通常設定最高過給圧Pn
を越えないように制御するのであり、このときの
フローチヤートは第２図に示す通りである。 In this comparison, when P2 is equal to Pa1, the waste gate valve 15 is not opened or closed;
When P2 is not equal to Pa1, a boost pressure correction signal indicating that the boost pressure is set to Pa1 is sent to the waste gate valve 15, and the waste gate valve 15 is opened and closed, thereby changing the boost pressure to the normal setting boost pressure. While increasing the acceleration setting boost pressure to a higher acceleration setting to improve the acceleration performance of the engine, when comparing P2 and Pa, if P2 exceeds Pa, the rotation speed N3 and boost pressure at that time P3 is then detected, and then P3 is compared with the normally set maximum boost pressure Pn. P3
is equal to or smaller than Pn, the waste gate valve 15 is not opened or closed, but when P3 is
When Pn is exceeded, a comparison is made to see if it is equal to the acceleration setting supercharging pressure Pa2 corresponding to N3, and when it is equal, the waste gate valve 15 does not open/close, but when P3 is not equal to Pa2, the supercharging pressure By opening and closing the waste gate valve 15 by issuing a boost pressure correction signal to make the normal setting maximum boost pressure Pn, the boost pressure becomes the normal setting maximum boost pressure Pn.
The flowchart at this time is shown in FIG. 2.
本発明の最も重要な点は、スロツトル弁９を急
開しての加速時において過給圧を通常設定過給圧
から加速設定過給圧に上昇制御する前に、機関の
出力軸１８の負荷側への動力伝達がされているか
否かを判断させることである。 The most important point of the present invention is that during acceleration by rapidly opening the throttle valve 9, the load on the output shaft 18 of the engine is The objective is to determine whether or not power is being transmitted to the other side.
すなわち、この判断がないときには、機関から
負荷側への動力伝達を主クラツチ１９にて切つて
いるか、又は／及び、変速機構２０のニユートラ
ルにて遮断している状態で、アクセルペダル１７
を急速に踏みこんだとき、つまり空ふかしのとき
にも、過給圧が加速設定過給圧に上昇して機関の
回転数が著しく高くなるが、主クラツチスイツチ
２４及びニユートラルスイツチ２５に対するオア
回路２７からの信号に基いて、負荷側への動力伝
達の有無を判断させ、負荷側への動力伝達を切つ
た状態のとき、過給圧を通常設定過給圧に制御
し、負荷側へ動力伝達を行つているときの加速に
際してのみ過給圧を加速設定過給圧に上昇制御す
るから、空ふかし時における機関の回転数の増大
を防止できるのである。 That is, when this determination is not made, the accelerator pedal 17 is cut off with the main clutch 19 cutting off the power transmission from the engine to the load side and/or with the transmission mechanism 20 in neutral.
When the engine is pressed down rapidly, that is, when the engine is running flat, the boost pressure rises to the acceleration setting boost pressure and the engine speed increases significantly, but the OR circuit for the main clutch switch 24 and the neutral switch 25 Based on the signal from 27, the presence or absence of power transmission to the load side is determined, and when the power transmission to the load side is cut off, the boost pressure is controlled to the normally set boost pressure, and the power is transmitted to the load side. Since the supercharging pressure is controlled to increase to the acceleration setting supercharging pressure only during acceleration during transmission, it is possible to prevent the engine speed from increasing when the engine is revved up.
以上要するに本発明は、排気タービンに対する
排気バイパス通路に、過給圧を通常設定過給圧に
制御するためのウエストゲート弁を備えて成る排
気ターボ過給機付き内燃機関において、機関の加
速時に、過給圧を前記ウエストゲート弁にて前記
通常設定過給圧より高い加速設定過給圧に制御す
るに当たり、動力伝達系の動力伝達が切れている
状態のときには、前記ウエストゲート弁による過
給圧の加速設定過給圧への上昇制御を解除するよ
うにしたことを特徴とする排気ターボ過給式内燃
機関における加速制御方法であつて、機関の加速
性を過給圧の上昇制御によつて向上する場合に、
機関の空ふかしによつて機関の耐久性を損なうこ
とを確実且つ的確に防止できる効果を有する。 In summary, the present invention provides an internal combustion engine with an exhaust turbo supercharger, which is equipped with a waste gate valve in the exhaust bypass passage for the exhaust turbine to control the supercharging pressure to the normally set supercharging pressure, when the engine accelerates. When controlling the boost pressure to an acceleration set boost pressure higher than the normal set boost pressure using the waste gate valve, when the power transmission of the power transmission system is cut off, the boost pressure is controlled by the waste gate valve. An acceleration control method for an exhaust turbocharged internal combustion engine, characterized in that the control for increasing the boost pressure to the acceleration setting boost pressure is canceled, the acceleration control method of the engine being controlled by increasing the boost pressure to the acceleration setting boost pressure. In case of improvement,
This has the effect of reliably and accurately preventing damage to the durability of the engine due to engine revving.
第１図は本発明の実施例を示す図、第２図はフ
ローチヤートを示す図である。
１……機関、４……排気ターボ過給機、５……
排気タービン、６……ブロワー圧縮機、１０……
気化器、１４……バイパス通路、１５……ウエス
トゲート弁、２６……制御回路、２３……スロツ
トル弁開度センサー、２１……回転センサー、２
２……過給圧センサー、１９……主クラツチ、２
０……変速機構、２４……主クラツチスイツチ、
２５……ニユートラルスイツチ。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a flowchart. 1...engine, 4...exhaust turbo supercharger, 5...
Exhaust turbine, 6... Blower compressor, 10...
Carburetor, 14... Bypass passage, 15... Waste gate valve, 26... Control circuit, 23... Throttle valve opening sensor, 21... Rotation sensor, 2
2...Supercharging pressure sensor, 19...Main clutch, 2
0...Transmission mechanism, 24...Main clutch switch,
25...Neutral switch.
Claims (1)
過給圧を通常設定過給圧に制御するためのウエス
トゲート弁を備えて成る排気ターボ過給機付き内
燃機関において、機関の加速時に、過給圧を前記
ウエストゲート弁にて前記通常設定過給圧より高
い加速設定過給圧に制御するに当たり、動力伝達
系の動力伝達が切れているときには、前記ウエス
トゲート弁による過給圧の加速設定過給圧への上
昇制御を解除するようにしたことを特徴とする排
気ターボ過給式内燃機関における加速制御方法。1 In the exhaust bypass passage for the exhaust turbine,
In an internal combustion engine equipped with an exhaust turbo supercharger, which is equipped with a wastegate valve for controlling boost pressure to a normal set boost pressure, when the engine accelerates, the waste gate valve controls the boost pressure to exceed the normal set boost pressure. When controlling the boost pressure to an acceleration set boost pressure higher than the boost pressure, when the power transmission in the power transmission system is cut off, the control to increase the boost pressure to the set acceleration boost pressure by the waste gate valve is released. An acceleration control method in an exhaust turbocharged internal combustion engine, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58118560A JPS6011630A (en) | 1983-06-30 | 1983-06-30 | Acceleration control method in exhaust turbosupercharging type internal- combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58118560A JPS6011630A (en) | 1983-06-30 | 1983-06-30 | Acceleration control method in exhaust turbosupercharging type internal- combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6011630A JPS6011630A (en) | 1985-01-21 |
| JPS6238544B2 true JPS6238544B2 (en) | 1987-08-18 |
Family
ID=14739611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58118560A Granted JPS6011630A (en) | 1983-06-30 | 1983-06-30 | Acceleration control method in exhaust turbosupercharging type internal- combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293912A (en) * | 1988-09-30 | 1990-04-04 | Kubota Ltd | Remote control device for grain drier |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63150029U (en) * | 1987-03-25 | 1988-10-03 | ||
| JPS63318906A (en) * | 1987-06-23 | 1988-12-27 | 株式会社 あかしや | Production of bristle of brush |
| JP2014169001A (en) * | 2013-03-01 | 2014-09-18 | Mitsubishi Motors Corp | Vehicle control device |
-
1983
- 1983-06-30 JP JP58118560A patent/JPS6011630A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293912A (en) * | 1988-09-30 | 1990-04-04 | Kubota Ltd | Remote control device for grain drier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6011630A (en) | 1985-01-21 |
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