JPH01177413A - Engine with turbocharger - Google Patents
Engine with turbochargerInfo
- Publication number
- JPH01177413A JPH01177413A JP62334600A JP33460087A JPH01177413A JP H01177413 A JPH01177413 A JP H01177413A JP 62334600 A JP62334600 A JP 62334600A JP 33460087 A JP33460087 A JP 33460087A JP H01177413 A JPH01177413 A JP H01177413A
- Authority
- JP
- Japan
- Prior art keywords
- supercharger
- turbocharger
- bypass passage
- engine
- control valve
- 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.)
- Pending
Links
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition Effects 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/32—Engines with pumps other than of reciprocating-piston type
- F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
- F02B33/36—Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type
- F02B33/38—Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type of Roots type
-
- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
- F02B33/446—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs having valves for admission of atmospheric air to engine, e.g. at starting
-
- 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
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
-
- 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)
Abstract
Description
本発明は、自動車等の車両において排気駆動式の過給機
であるターボチャージャとエンジン駆動式の過給機であ
るスーパーチャージャとを備えた過給機付エンジンに関
し、詳しくは、ターボチャージャとスーパーチャージャ
との組合せ構造に関する。The present invention relates to a supercharged engine equipped with a turbocharger that is an exhaust-driven supercharger and a supercharger that is an engine-driven supercharger in a vehicle such as an automobile. Regarding the combination structure with the charger.
従来、この種の過給機付エンジンで特にターボチャージ
ャとスーパーチャージャとを直列に配置したものに関し
ては、例えば実開昭５９−９６３３２号公報の先行技術
がある。ここで、ターボチャージャの下流にバイパス通
路によりスーパーチャージャを吸気通路と並列的に３！
Ｉ設し、吸気通路とバイパス通路の切換えを両者の分岐
部の切換弁で行い、低速域でのみ二段過給することが示
されている。Conventionally, regarding this type of supercharged engine, particularly one in which a turbocharger and a supercharger are arranged in series, there is a prior art, for example, in Japanese Utility Model Application Publication No. 59-96332. Here, the supercharger is connected downstream of the turbocharger by a bypass passage in parallel with the intake passage.
It is shown that the intake passage and the bypass passage are switched between the intake passage and the bypass passage by a switching valve at the branching part of both, and two-stage supercharging is performed only in the low speed range.
ところで、上記先行技術のものにあっては、切換弁の動
°作の制御系が明確でなく、仮りにエンジン回転数で切
換え動作すると、切換時に過給圧が大きく変動する恐れ
がある。また、スーパーチャージャからターボチャージ
ャの領域に移ってスーパーチャージャが不要になった場
合は、上記切換弁のみならずスーパーチャージャも迅速
に駆動停止の制御を行う必要がある。
本発明は、このような点に鑑みなされたもので、ターボ
チャージャとスーパーチャージャとの直列バイパスにお
いて、両者の切換制御を円滑に行うようにした過給機付
エンジンを提供することを目的とする。By the way, in the prior art described above, the control system for the operation of the switching valve is not clear, and if switching is performed based on the engine speed, there is a risk that the supercharging pressure will fluctuate greatly at the time of switching. Further, when the supercharger is no longer needed due to the transition from the supercharger to the turbocharger region, it is necessary to quickly control the drive stop of not only the switching valve but also the supercharger. The present invention has been made in view of the above points, and an object of the present invention is to provide a supercharged engine that smoothly controls switching between a turbocharger and a supercharger in a series bypass between the two. .
上記目的を達成するため、本発明は、吸気系のターボチ
ャージャの下流にスロットル弁を有するボデーを介して
スーパーチャージャを直列に連投し、上記スーパーチャ
ージャにはバイパス通路を設け、上記バイパス通路にそ
の過給圧により開閉する制御弁を設け、上記制御弁の開
度センサにより上記スーパーチャージャの駆動を制御す
るように構成されている。In order to achieve the above object, the present invention connects a supercharger in series through a body having a throttle valve downstream of a turbocharger in an intake system, provides a bypass passage in the supercharger, and provides a bypass passage in the bypass passage. A control valve that opens and closes depending on boost pressure is provided, and the drive of the supercharger is controlled by an opening sensor of the control valve.
上記構成に基づき、ターボチャージャからの過給圧は、
スロットル弁で流量制御されてスーパーチャージャとバ
イパス通路に流入し、低速域で制御弁が閉じると共にス
ーパーチャージャが駆動する場合は、そのスーパーチャ
ージャで二段過給され、中、高速域で制御弁が開くと共
にスーパーチャ−ジャが停止すると、ターボチャージャ
のみの過給に切換わるようになる。
こうして本発明では、ターボチャージャとスーパーチャ
ージャとの直列配置において、制御弁とスーパーチャー
ジャの駆動の有無により円滑に切換わることが可能にな
る。
ｒ実 施 例】
以下、本発明の実施例を図面に基づいて説明する。
図面において、符号１はエアクリーナであり、このエア
クリーナ１を有する吸気通路２が、遠心型のターボチャ
ージャ３のブロワ３ａ、インタークーラ４を介してスロ
ットル弁５を有するボデー６に連通する。スロットル弁
５の下流の吸気通路７は、更に容積型のスーパーチャー
ジャ８．インタークーラ９．脈動防止のチャンバ１０．
吸気マニホールド１１を介してエンジン本体１２の吸入
ボート１３に連通ずるのであり、こうしてターボチャー
ジャ３とスーパーチャージャ８とがスロットル弁５の上
下流に直列配置される。また、排気通路１４はターボチ
ャージャ３のタービン３ｂに通通し、この排気通路１４
に、過給圧制御用のバイパス通路１５．ウェイストゲー
ト弁１６が設けである。
そこで、上記吸気通路７のスーパーチャージャ８に対し
てバイパス通路１７を連設し、このバイパス通路１７に
制御弁１８が設けられる。制御弁１８のアクチュエータ
１９には通路２０によりターボチャージャ３の過給圧が
導入され、所定の過給圧に達すると開くように構成され
る。制御弁１Ｂには更に開度センサ２１が取付けられ、
このセンサ信号が制御部２２に入力し、その出力信号に
よりスーパーチャージャ８のクラッチ２３を接断するよ
うになっている。
次いで、このように構成された過給機付エンジンの作用
について述べる。
先ず、エンジン運転時に排気エネルギによりターボチャ
ージャ３を駆動して、その過給圧がインタークーラ４で
冷却された後にスロットル弁５で絞られてスーパーチャ
ージャ８とバイパス通路１７に流入する。ここで低速域
の場合は、ターボチャージャ３の過給圧が低いことで、
アクチュエータ１９により制御弁１８は閉じてバイパス
通路１７を３！！断する。一方このとき、制御弁１８の
開弁信号が開度センサ２１により制御部２２に入力して
クラッチ２３を接続することで、スーパーチャージャ８
はエンジン駆動されるのであり、こうしてターボチャー
ジャ３による過給圧は、更にスーパーチャージャ８で二
段過給されて高い過給圧を生じる。そしてこの過給圧が
インタークーラ９で冷却された後に、エンジン本体１２
に供給される。
次いで、中、高速時には、ターボチャージャ３の過給圧
が排気エネルギの増大に伴って上昇し、その過給圧が設
定値に達するとアクチュエータ１９・により制御弁１８
を開く、すると、この制御弁１８の開弁信号でクラッチ
２３を切断するようになり、このためスーパーチャージ
ャ８の駆動が停止して吸気通路７を３！！断する。そこ
で、ターボチャージャ３のみの過給圧がバイパス通Ｂ１
７を介してエンジン本体１２に供給される。
こうしてターボチャージャ３の過給圧の低い低速域では
、スーパーチャージャ８で二段過給され、ターボチャー
ジャ過給圧の高い中、高速域では、ターボチャージャ３
のみで過給されて、運転全域でフラットな高いトルク特
性が得られるのである。
なお、ターボチャージャ３の下流のインタークーラ４は
なくとも良い。Based on the above configuration, the boost pressure from the turbocharger is
The flow rate is controlled by the throttle valve and flows into the supercharger and bypass passage, and when the control valve closes in the low speed range and the supercharger is driven, the supercharger performs two-stage supercharging, and the control valve closes in the middle and high speed ranges. When the supercharger is opened and the supercharger is stopped, supercharging is switched to only by the turbocharger. Thus, in the present invention, when a turbocharger and a supercharger are arranged in series, it is possible to smoothly switch the control valve and the supercharger depending on whether or not they are driven. Embodiments Examples of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes an air cleaner, and an intake passage 2 having this air cleaner 1 communicates with a body 6 having a throttle valve 5 via a blower 3a of a centrifugal turbocharger 3 and an intercooler 4. The intake passage 7 downstream of the throttle valve 5 further includes a positive displacement supercharger 8. Intercooler9. Anti-pulsation chamber 10.
It communicates with the intake boat 13 of the engine body 12 via the intake manifold 11, and thus the turbocharger 3 and the supercharger 8 are arranged in series upstream and downstream of the throttle valve 5. Further, the exhaust passage 14 communicates with the turbine 3b of the turbocharger 3, and the exhaust passage 14
, a bypass passage 15 for controlling boost pressure. A wastegate valve 16 is provided. Therefore, a bypass passage 17 is connected to the supercharger 8 in the intake passage 7, and a control valve 18 is provided in the bypass passage 17. The supercharging pressure of the turbocharger 3 is introduced into the actuator 19 of the control valve 18 through a passage 20, and is configured to open when a predetermined supercharging pressure is reached. An opening sensor 21 is further attached to the control valve 1B,
This sensor signal is input to the control section 22, and the clutch 23 of the supercharger 8 is connected/disconnected based on the output signal. Next, the operation of the supercharged engine configured as described above will be described. First, during engine operation, the turbocharger 3 is driven by exhaust energy, and the supercharging pressure is cooled by the intercooler 4, then throttled by the throttle valve 5, and flows into the supercharger 8 and bypass passage 17. Here, in the case of low speed range, the supercharging pressure of turbocharger 3 is low, so
The actuator 19 closes the control valve 18 and opens the bypass passage 17 to 3! ! cut off On the other hand, at this time, the valve opening signal of the control valve 18 is inputted to the control unit 22 by the opening sensor 21 and the clutch 23 is connected, so that the supercharger 8
is driven by the engine, and the supercharging pressure generated by the turbocharger 3 is further supercharged in two stages by the supercharger 8 to generate high supercharging pressure. After this supercharging pressure is cooled by the intercooler 9, the engine body 12
is supplied to Next, at medium and high speeds, the supercharging pressure of the turbocharger 3 increases as the exhaust energy increases, and when the supercharging pressure reaches the set value, the actuator 19 controls the control valve 18.
When the control valve 18 opens, the clutch 23 is disconnected by the valve opening signal of the control valve 18, and the driving of the supercharger 8 is therefore stopped and the intake passage 7 is opened. ! cut off Therefore, the supercharging pressure of only the turbocharger 3 is transferred to the bypass passage B1.
7 to the engine main body 12. In this way, in the low speed range where the boost pressure of the turbocharger 3 is low, the supercharger 8 performs two-stage supercharging, and in the middle and high speed range where the turbocharger boost pressure is high, the turbocharger 3
The engine is only supercharged, resulting in flat, high torque characteristics throughout the entire operating range. Note that the intercooler 4 downstream of the turbocharger 3 may not be provided.
以上述べてきたように、本発明によれば、ターボチャー
ジャとスーパーチャージャとの直列配置の有無で吸気系
を切換えるので、切換手段が不要である。
ターボチャージャの過給圧によりその領域に切換えられ
るので、切換時の過給圧の変化が無い。
ターボ領域ではスーパーチャージャが停止することで、
その駆動損失を生じない。As described above, according to the present invention, the intake system is switched depending on whether or not the turbocharger and supercharger are arranged in series, so a switching means is not required. Since it is switched to that range by the supercharging pressure of the turbocharger, there is no change in supercharging pressure at the time of switching. In the turbo region, the supercharger stops,
No driving loss occurs.
図面は本発明の過給機付エンジンの実施例を示す構成図
である。
３・・・ターボチャージャ、５・・・スロットル弁、８
・・・スーパーチャージャ、１７・・・バイパス通路、
１８・・・制御弁、１９・・・アクチュエータ、２１・
・・開度センサ、２２”・・・制御部、２３・・・クラ
ッチ特許出願人 富士重工業株式会社代理人 弁
理士 小 嬌 信 浮
量 弁理士 村 井 進The drawing is a configuration diagram showing an embodiment of a supercharged engine of the present invention. 3...Turbocharger, 5...Throttle valve, 8
...Supercharger, 17...Bypass passage,
18... Control valve, 19... Actuator, 21...
...Opening sensor, 22"...Control unit, 23...Clutch Patent applicant Fuji Heavy Industries Co., Ltd. Agent Patent attorney: Nobuko Kozuka Ukiyo Patent attorney: Susumu Murai
Claims (1)
るボデーを介してスーパーチャージャを直列に連設し、 上記スーパーチャージャにはバイパス通路を設け、上記
バイパス通路にその過給圧により開閉する制御弁を設け
、 上記制御弁の開度センサにより上記スーパーチャージャ
の駆動を制御することを特徴とする過給機付エンジン。[Claims] A supercharger is connected in series downstream of a turbocharger in an intake system via a body having a throttle valve, a bypass passage is provided in the supercharger, and the boost pressure is applied to the bypass passage. A supercharged engine, comprising: a control valve that opens and closes; and an opening sensor of the control valve controls driving of the supercharger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62334600A JPH01177413A (en) | 1987-12-26 | 1987-12-26 | Engine with turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62334600A JPH01177413A (en) | 1987-12-26 | 1987-12-26 | Engine with turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01177413A true JPH01177413A (en) | 1989-07-13 |
Family
ID=18279204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62334600A Pending JPH01177413A (en) | 1987-12-26 | 1987-12-26 | Engine with turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01177413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256150A (en) * | 1992-03-16 | 1993-10-05 | Mitsubishi Motors Corp | Automotive engine with combined supercharger |
| JP2015151888A (en) * | 2014-02-12 | 2015-08-24 | いすゞ自動車株式会社 | supercharger switching device |
-
1987
- 1987-12-26 JP JP62334600A patent/JPH01177413A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256150A (en) * | 1992-03-16 | 1993-10-05 | Mitsubishi Motors Corp | Automotive engine with combined supercharger |
| JP2015151888A (en) * | 2014-02-12 | 2015-08-24 | いすゞ自動車株式会社 | supercharger switching device |
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