JPS623295B2 - - Google Patents
Info
- Publication number
- JPS623295B2 JPS623295B2 JP57208768A JP20876882A JPS623295B2 JP S623295 B2 JPS623295 B2 JP S623295B2 JP 57208768 A JP57208768 A JP 57208768A JP 20876882 A JP20876882 A JP 20876882A JP S623295 B2 JPS623295 B2 JP S623295B2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- rotational speed
- cylinder device
- supercharger
- fluid pressure
- 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
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
- F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Control Of Turbines (AREA)
Description
【発明の詳細な説明】
本発明は可変翼式過給機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 control method for a variable blade supercharger.
過給機の排気タービン入口に可変翼を設け、同
可変翼を流体圧作動シリンダ装置を介して作動さ
せ、これによつて排気タービンへの排気流入量を
制御する方法において、第１図の実線で示す如
く、たとえばエンジン回転数が1400回転／毎分お
よび1800回転／毎分に達したときに、コントロー
ラからの切換信号によつて可変翼が制御されるこ
とにより、過給機のブースト圧が段階的に変化す
る定常特性が得られることが知られている。とこ
ろが、上記方法においてはエンジン加速時、エン
ジン回転速度とブースト圧との関係は定常特性の
グラフに沿つて矢印に示す方向に変化するが、減
速時には上記流体圧作動シリンダ装置をエアによ
り作動するときエアが圧縮性を有すること、およ
び同シリンダ装置と可変翼との間を連結するリン
ク機構の遊び、さらには機械まさつなどの影響に
よつて可変翼の作動に遅れ時間が生じてしまい、
破線に示すようなブースト圧特性をたどり、その
結果エンジンへの吸入空気量が減少し、トルク低
下を来たし、特に登坂走行時のような低速トルク
を必要とするときでも所要のトルクを得られず、
シフトダウンさせて走行させなければならなくな
つてしまうという不具合があつた。 In the method of providing a variable vane at the inlet of the exhaust turbine of a supercharger and operating the variable vane via a fluid pressure actuated cylinder device, thereby controlling the amount of exhaust gas flowing into the exhaust turbine, the solid line in Fig. 1 is used. As shown in, for example, when the engine speed reaches 1400 rpm and 1800 rpm, the boost pressure of the supercharger is increased by controlling the variable blades by the switching signal from the controller. It is known that steady-state characteristics that change stepwise can be obtained. However, in the above method, when the engine is accelerating, the relationship between the engine speed and the boost pressure changes in the direction shown by the arrow along the steady characteristic graph, but when decelerating, the relationship between the engine rotation speed and the boost pressure changes in the direction shown by the arrow. Due to the compressibility of air, the play in the link mechanism connecting the cylinder device and the variable blade, and the influence of mechanical interference, there is a delay in the operation of the variable blade.
The boost pressure characteristics shown by the broken line are followed, and as a result, the amount of air taken into the engine decreases, resulting in a decrease in torque, and the required torque cannot be obtained, especially when low-speed torque is required, such as when driving uphill. ,
There was a problem where I had to downshift to drive.
本発明は上記に鑑みて工夫されたものであり、
本発明の実施例方法を第２，３図について説明す
ると、エンジン減速時に1400回転／毎分より若干
高い回転数をN1、1800回転／毎分より若干高い
回転数をN2としてそれぞれ設定し、第２図に示
す如く該N1，N2に達したときブースト圧が一点
鎖線で示すような定常特性を得るように、図示さ
れないコントローラに組み込み、同コントローラ
から切換信号が出力するようにし、該信号に基づ
いて流体圧作動シリンダ装置が作動し、可変翼を
作動制御するように構成する。 The present invention has been devised in view of the above,
To explain the embodiment method of the present invention with reference to FIGS. 2 and 3, when the engine is decelerated, the rotation speed slightly higher than 1400 rotations/minute is set as N 1 and the rotation speed slightly higher than 1800 rotations/minute as N 2. , so that when the boost pressure reaches N 1 and N 2 as shown in FIG. The hydraulic cylinder device is configured to operate based on the signal to control the operation of the variable blade.
本実施例は上記のように可変翼を作動する流体
圧作動シリンダ装置の流体回路の応答遅れ時間を
見込んで切換信号を出力するように構成している
ため、第３図に示すように加速時と減速時との過
渡特性がほぼ一致することになり、減速時トルク
低下によるエンジン回転数の低下を招来する不具
合を解消することができる作用効果を有する。 In this embodiment, as described above, the switching signal is output in anticipation of the response delay time of the fluid circuit of the fluid pressure actuated cylinder device that operates the variable vane, so that the switching signal is output during acceleration as shown in Fig. 3. This means that the transient characteristics during deceleration and during deceleration are almost the same, which has the effect of being able to eliminate the problem of a decrease in engine speed due to a decrease in torque during deceleration.
第１図は従来装置におけるブースト圧力とエン
ジン回転数との関係を示すグラフ、第２図は本発
明の実施例における上記第１図と同様の定常特性
を示すグラフ、第３図は同実施例の過渡特性を示
すグラフである。
Fig. 1 is a graph showing the relationship between boost pressure and engine speed in a conventional device, Fig. 2 is a graph showing the same steady-state characteristics as in Fig. 1 above in an embodiment of the present invention, and Fig. 3 is a graph in the same embodiment. 2 is a graph showing the transient characteristics of .
Claims (1)
エンジン加速時所定のエンジン回転数において流
体圧作動シリンダ装置を介して作動させることに
より上記排気タービンへの排気流入量を調整する
ものにおいて、エンジン減速時上記所定のエンジ
ン回転数より高い回転数に達したとき上記流体圧
作動シリンダ装置を作動させることにより、加速
時と減速時の過渡特性がほぼ一致するように制御
するように構成したことを特徴とする可変翼式過
給機の制御方法。1. In an engine that adjusts the amount of exhaust gas flowing into the exhaust turbine by operating a variable blade provided at the exhaust turbine inlet of the supercharger via a fluid pressure operated cylinder device at a predetermined engine rotation speed during engine acceleration. The fluid pressure actuated cylinder device is operated when the rotational speed of the engine reaches a rotational speed higher than the predetermined engine rotational speed during deceleration, thereby controlling the transient characteristics during acceleration and deceleration to be substantially the same. Characteristic control method of variable wing supercharger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57208768A JPS5999030A (en) | 1982-11-29 | 1982-11-29 | Method of controlling adjustable blade type supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57208768A JPS5999030A (en) | 1982-11-29 | 1982-11-29 | Method of controlling adjustable blade type supercharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5999030A JPS5999030A (en) | 1984-06-07 |
| JPS623295B2 true JPS623295B2 (en) | 1987-01-24 |
Family
ID=16561766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57208768A Granted JPS5999030A (en) | 1982-11-29 | 1982-11-29 | Method of controlling adjustable blade type supercharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5999030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0318985U (en) * | 1989-06-30 | 1991-02-25 |
-
1982
- 1982-11-29 JP JP57208768A patent/JPS5999030A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0318985U (en) * | 1989-06-30 | 1991-02-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5999030A (en) | 1984-06-07 |
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