JPH04103817A - Exhaust supplying method and device of supercharger of automobile - Google Patents
Exhaust supplying method and device of supercharger of automobileInfo
- Publication number
- JPH04103817A JPH04103817A JP2218994A JP21899490A JPH04103817A JP H04103817 A JPH04103817 A JP H04103817A JP 2218994 A JP2218994 A JP 2218994A JP 21899490 A JP21899490 A JP 21899490A JP H04103817 A JPH04103817 A JP H04103817A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- exhaust gas
- temperature
- purification device
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000000746 purification Methods 0.000 claims abstract description 35
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 230000003213 activating effect Effects 0.000 abstract 2
- 239000002699 waste material Substances 0.000 description 11
- 230000004913 activation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Supercharger (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、自動車用過給機の排気供給方法及びその装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exhaust gas supply method and apparatus for an automobile supercharger.
［従来の技術］
機関の排気ガスエネルギを有効に利用するものとして、
自動車用過給機（ターボチャージャ）が知られている。[Conventional technology] As a device that effectively utilizes engine exhaust gas energy,
Automotive superchargers (turbochargers) are known.
従来この種の過給機は、エンジンの排気下流側に設けら
れて、排気ガスにより駆動されるタービンと、このター
ビンと同軸上に連結されたブロワとを有して構成されて
いる。そして、ブロワで形成された密度の高い空気を、
エンジンに吸気として供給することで、無過給エンジン
よりも高出力を得ることができるようになっている。BACKGROUND ART Conventionally, this type of supercharger includes a turbine that is provided on the exhaust downstream side of an engine and is driven by exhaust gas, and a blower that is coaxially connected to the turbine. Then, the dense air formed by the blower,
By supplying air to the engine as intake air, it is possible to obtain higher output than a non-supercharged engine.
またこの過給機には、過給圧をコントロールするための
ウェイストゲートバルブが錫えられており、ブロワによ
る圧力が所定の圧力以上になると、タービンに備えられ
たバイパスポートのバルブが開放されて、排気の一部が
タービンに供給されないことで、高負荷時の過度な過給
圧上昇を防ぐようになっている。This turbocharger is also equipped with a waste gate valve to control the boost pressure, and when the pressure from the blower exceeds a predetermined pressure, the bypass port valve installed in the turbine is opened. A portion of the exhaust gas is not supplied to the turbine, which prevents an excessive rise in boost pressure during high loads.
［発明が解決しようとする課題］
一方近来にあっては、自動車の排気ガス規制が強化され
、排気中のＣｏ、ＨＣ，ＮＯ，の量は出来るだけ少なく
することが望まれている。このためエンジン自体の改良
と並行して、排気系の途中に触媒（三元触媒など）を用
いた排気浄化装置を設け、Ｃｏ、ＨＣ，Ｎｏ、を酸化或
いは還元させて、無害のＣｏ２やＨ２Ｏなどに変えて排
出するようにしている。[Problems to be Solved by the Invention] On the other hand, in recent years, exhaust gas regulations for automobiles have been tightened, and it is desired to reduce the amounts of Co, HC, and NO in the exhaust as much as possible. Therefore, in parallel with the improvement of the engine itself, an exhaust purification device using a catalyst (such as a three-way catalyst) is installed in the exhaust system to oxidize or reduce Co, HC, and No, and convert it into harmless Co2 and H2O. I am trying to emit it by changing it to something like this.
ところでこのような触媒には、ある程度の高温にならな
いと作用しない（活性化しない）ものがあるため、排気
ガス温度が低い始動時（コールドスタート時）において
は、充分な排気ガス処理ができなかった。By the way, some of these catalysts do not work (do not become activated) unless the temperature reaches a certain level, so sufficient exhaust gas treatment is not possible during cold starts when the exhaust gas temperature is low. .
特に過給機を備えたエンジンにおいては、マニホールド
やタービン翼車なとの熱容蓋が大きいなめ、これらを経
由した後の排気温度が下がってしまい、無過給エンジン
に比べて、活性化温度に達するまでに長い時間が掛かっ
てしまうという問題があった。従って現行の機関常用運
転時の排気ガス規制に加えて、始動時を対象とした排気
ガス規制が強化された場合、これをクリアできなくなる
おそれがある。In particular, in engines equipped with a supercharger, the heat capacity of the manifold and turbine wheel is large, so the exhaust temperature after passing through these is lower, and the activation temperature is lower than that of a non-supercharged engine. There was a problem in that it took a long time to reach . Therefore, if exhaust gas regulations for engine startup are strengthened in addition to the current exhaust gas regulations during regular engine operation, there is a risk that the regulations will not be met.
この対策として、排気浄化装置をヒータなどで暖める、
或いは排気浄化装置を出来るかぎり排気上流側に配置す
る、さらにはマニホールドなどを薄肉に成形して質量を
小さくする、などが考えられるが、いずれも大幅な設計
変更となり、強度の低下や製造費の増加を招いてしまう
。As a countermeasure to this, warming the exhaust purification device with a heater etc.
Alternatively, it is possible to place the exhaust purification device as close to the upstream side of the exhaust gas as possible, or to reduce mass by forming the manifold thinner, but all of these would require major design changes, resulting in lower strength and lower manufacturing costs. This will lead to an increase.
そこで本発明は、上記事情に鑑み、触媒の活性化温度ま
での時間を早めることができ、しかも大幅な設計変更の
ない自動車用過給機の排気供給方法及びその装置を捷供
すべく創案されたものである。In view of the above circumstances, the present invention was devised to provide an exhaust gas supply method and device for an automobile supercharger that can shorten the time required for the catalyst to reach its activation temperature and that does not require major design changes. It is something.
［ｉ１１！ａを解決するための手段及び作用〕本発明は
、所定温度で活性化する触媒を用いた排気浄化装置を排
気下流側に配置した自動車用過給機に排気を供給するに
際して、ｍ間始動時に、過給機へ供給される上流側の排
気の一部又は全部を、排気浄化装！に直接導くものであ
る６また本発明は、上記方法を実施するための装置であ
って、所定温度で活性化する触媒を用いた排気浄化装！
を排気下流側に配置した自動車用過給機に、その上流側
の排気通路と排気浄化装置までの下流側排気通路とを結
ぶバイパス路を設け、排気浄化装置側の温度が所定温度
より低い時にバイパス路を開放し、所定温度に達しな時
に閉成するバイパス路開閉手段を設けたものである。[i11! Means and operation for solving problem a] The present invention provides a method for supplying exhaust gas to an automobile supercharger in which an exhaust purification device using a catalyst that is activated at a predetermined temperature is disposed downstream of the exhaust gas. , some or all of the upstream exhaust gas supplied to the turbocharger is treated with an exhaust purification system! 6. The present invention also provides an apparatus for carrying out the above method, which is an exhaust purification system using a catalyst that is activated at a predetermined temperature.
An automotive supercharger that is placed on the downstream side of the exhaust gas is provided with a bypass path that connects the upstream exhaust passage and the downstream exhaust passage to the exhaust purification device. A bypass passage opening/closing means is provided which opens the bypass passage and closes it when a predetermined temperature is not reached.
この構成によって、排気温度が低い機関始動時には、バ
イパス路開閉手段がバイパス路を開放し、機関からの排
気の一部又は全部が、バイパス路を通って過給機を経由
せずに直接排気浄化装置に導かれ、その触媒は迷やかに
活性化温度に達する。With this configuration, when the engine is started with a low exhaust temperature, the bypass passage opening/closing means opens the bypass passage, and part or all of the exhaust gas from the engine passes through the bypass passage and is directly purified by exhaust gas without passing through the turbocharger. Guided into the device, the catalyst reaches its activation temperature in a timely manner.
そしてその後は、バイパス路開閉手段がバイパス路を閉
成して、排気の全部を過給機に供給できるようにして、
通常の過給を行わせる。After that, the bypass passage opening/closing means closes the bypass passage so that all of the exhaust gas can be supplied to the supercharger.
Perform normal supercharging.
［５ｉ！施例〕 以下、本発明の実施例を、添付図面に従って説明する。[5i! Example] Embodiments of the present invention will be described below with reference to the accompanying drawings.
まず第１図によって、本発明に係る自動車用過給機の排
気供給装置の一実施例を説明する。First, an embodiment of an exhaust gas supply device for an automobile supercharger according to the present invention will be described with reference to FIG.
この排気供給装置が備えられる自動車用過給機１は、従
来と同様に構成されたものであり、排気ガスエネルギに
よって回転駆動されるタービン２と、タービン２と同軸
上に連結されたブロワ３とを有し、そのハウジングとな
るタービン車室４及びブロワ車室５がそれぞれ所定の形
状を以て形成されている。またタービン２のガス人口６
及び出ロアには、排気通路８，９を区画する排気管１ｏ
。The automotive supercharger 1 equipped with this exhaust supply device is configured in the same manner as before, and includes a turbine 2 that is rotationally driven by exhaust gas energy, and a blower 3 that is coaxially connected to the turbine 2. The turbine casing 4 and the blower casing 5, which serve as the housing thereof, are each formed in a predetermined shape. Also, the gas population of turbine 2 is 6.
and an exhaust pipe 1o that partitions the exhaust passages 8 and 9 into the exit lower part.
.
１１が接続されており、下流側排気管１１には、所定温
度で活性化する触媒を用いた排気浄化装置１２が接続さ
れている。11 is connected to the downstream side exhaust pipe 11, and an exhaust purification device 12 using a catalyst that is activated at a predetermined temperature is connected to the downstream exhaust pipe 11.
さらに過給Ｉ１１には、ウェストゲートバルブ１３が備
えられている。このウェストゲートバルブ１３は、ター
ビン車室４のタービン翼車１４上流側の位１及びガス出
ロアを短絡するバイパスボ−ト１５と、バイパスポート
１５を開閉する弁体１６と、弁体１６を適宜作動させる
ためのアクチュエータ１７とで構成されている。Furthermore, the supercharging I11 is equipped with a waste gate valve 13. This waste gate valve 13 includes a bypass boat 15 that short-circuits the turbine wheel 14 upstream side of the turbine casing 4 and the gas outlet lower, a valve body 16 that opens and closes the bypass port 15, and a valve body 16 that connects the valve body 16 as appropriate. It is composed of an actuator 17 for actuation.
アクチュエータ１７は、ブロワ車室５にブラケット１８
を介して支持されたケース１９と、ケース１９内を正圧
室２０及び負圧室２１に仕切るダイヤフラム２２と、負
圧室２１内に設けられた圧縮スプリング２３と、一端が
ダイヤフラム２２に取り付けられ他端がタービン車室４
近傍まで延長されたロッド２４とで構成されている。そ
してロッド２４の他端に弁体１６が連結され、ロッド２
４が延長方向に移動した時に、弁体１６が開閉動作され
るようになっている。The actuator 17 is attached to a bracket 18 in the blower compartment 5.
a diaphragm 22 that partitions the inside of the case 19 into a positive pressure chamber 20 and a negative pressure chamber 21; a compression spring 23 provided in the negative pressure chamber 21; and one end attached to the diaphragm 22. The other end is the turbine chamber 4
The rod 24 extends to the vicinity. The valve body 16 is connected to the other end of the rod 24.
When the valve body 4 moves in the extension direction, the valve body 16 is opened and closed.
また正圧室２０にはブロワ車室５内と連通するパイプ２
５が接続され、ブロワ圧力が所定の圧力に達したときに
、ダイヤフラム２２が圧縮スプリング２３に抗してター
ビン２側に膨らみ、ロッド２４が押されて弁体１６を開
放側に作動させるようになっている。In addition, the positive pressure chamber 20 has a pipe 2 that communicates with the inside of the blower compartment 5.
5 is connected, and when the blower pressure reaches a predetermined pressure, the diaphragm 22 expands against the compression spring 23 toward the turbine 2, and the rod 24 is pushed to operate the valve body 16 to the opening side. It has become.
そし゛て本発明の排気供給装置は、タービン２の上流側
の排気通路８と排気浄化装置１２までの下流側排気通路
９とを結ぶバイパス路及び、バイパス路を適宜開閉させ
るバイパス路開閉手ｆｉ２６によって構成されている１
本実施例にあっては、上記したウェイストゲートバルブ
１３が利用されており、バイパス路としてバイパスポー
ト１５が適用されていると共に、バイパス路開閉手段２
６としては弁体１６及びアクチュエータ１７が利用され
ている。The exhaust supply device of the present invention includes a bypass passage connecting the upstream exhaust passage 8 of the turbine 2 and the downstream exhaust passage 9 up to the exhaust purification device 12, and a bypass passage opening/closing hand fi26 that opens and closes the bypass passage as appropriate. 1 composed of
In this embodiment, the above-mentioned waste gate valve 13 is used, a bypass port 15 is applied as a bypass path, and a bypass path opening/closing means 2 is used.
6, a valve body 16 and an actuator 17 are used.
そしてバイパス路開閉手段２６は、さらに、排気浄化装
置１２の上流側の排気温度を検出するための温度センサ
２７と、アクチュエータ１７に連結された負圧導入パイ
プ２８と、温度センサ２７からの情報により負圧導入パ
イプ２８を開閉させるためのコントローラ２９とが備え
られて構成されている。The bypass passage opening/closing means 26 further uses information from a temperature sensor 27 for detecting the exhaust gas temperature on the upstream side of the exhaust purification device 12, a negative pressure introduction pipe 28 connected to the actuator 17, and the temperature sensor 27. The controller 29 is configured to include a controller 29 for opening and closing the negative pressure introduction pipe 28.
温度センサ２７は、タービン２の下流側の排気管１１内
に装入されており、検出値を入力させるべくコントロー
ラ２９に結線されている。負圧導入パイプ２８は、エン
ジンの吸気ボート（図示せず）の上流側とケース１９の
負圧室２１とを連通させるべく形成されており、その途
中にはコントローラ２９により開閉作動される電磁弁３
０が設けられている。即ちエンジンの始動時など、アイ
ドリング運転時に発生する公知の負圧を利用し、電磁弁
３０が開になったときに、二〇負圧でアクチュエータ１
７を弁体１６開放側に作動させるようになっている。The temperature sensor 27 is inserted into the exhaust pipe 11 on the downstream side of the turbine 2, and is connected to the controller 29 to input the detected value. The negative pressure introduction pipe 28 is formed to communicate the upstream side of an intake boat (not shown) of the engine with the negative pressure chamber 21 of the case 19, and a solenoid valve that is opened and closed by a controller 29 is installed in the middle of the pipe. 3
0 is set. That is, by using the known negative pressure generated during idling operation such as when starting the engine, when the solenoid valve 30 is opened, the actuator 1 is activated at 20 negative pressure.
7 is operated to open the valve body 16.
そしてコントローラ２９には、排気浄化装置１２内の触
媒が活性化する所定温度Ｔｏが設定されており、温度セ
ンサ２７から入力した検出温度Ｔと比較し、これが所定
温度Ｔ０よりも低いときは電磁弁３０を開に、また高い
ときは閉にするようになっている。即ち、排気浄化装置
１２側の温度が、所定温度Ｔ０より低い時にはウェイス
トゲートバルブ１３を強制的に開とし、所定温度Ｔ０に
達した時に閉とするようになっている。A predetermined temperature To at which the catalyst in the exhaust purification device 12 is activated is set in the controller 29, and compared with the detected temperature T input from the temperature sensor 27, if this is lower than the predetermined temperature T0, a solenoid valve is set. 30 is open, and when it is high, it is closed. That is, when the temperature on the exhaust purification device 12 side is lower than a predetermined temperature T0, the waste gate valve 13 is forcibly opened, and when the temperature reaches the predetermined temperature T0, it is closed.
次に、本発明に係わる自動車用過給機の排気供給方法の
一実施例を、上記構成の作用として説明する。Next, an embodiment of the exhaust gas supply method for an automobile supercharger according to the present invention will be described as the effect of the above configuration.
エンジンが始動されると、過給ａｌｌへの排気供給の制
御が開始される（第３５！Ｊ参照）。When the engine is started, control of exhaust gas supply to supercharging all is started (see No. 35!J).
まず温度センサ２７が、タービン２の下流側且つ排気浄
化装置１２の上流側である排気管１１内の排気温度を検
出しくＳＴ １） 、この情報をコントローラ２９に入
力させる。First, the temperature sensor 27 detects the exhaust temperature in the exhaust pipe 11, which is downstream of the turbine 2 and upstream of the exhaust gas purification device 12.ST1) This information is input to the controller 29.
コントローラ２９は、この検出温度Ｔと設定温度Ｔｏと
を比較する（ＳＴ ２） 、始動時にあっては、排気の
温度は低いために、検出温度Ｔが設定温度Ｔ、を下回る
こととなり、コントローラ２９が電磁弁３０を開にして
（ＳＴ３）、アクチュエータ１７の負圧室２１にエンジ
ンの負圧を導入し、弁体１６を作動させてバイパスポー
ト１５を開く。The controller 29 compares the detected temperature T and the set temperature To (ST2). At the time of startup, the temperature of the exhaust gas is low, so the detected temperature T falls below the set temperature T, and the controller 29 opens the electromagnetic valve 30 (ST3), introduces negative pressure of the engine into the negative pressure chamber 21 of the actuator 17, operates the valve body 16, and opens the bypass port 15.
これで排気の一部、例えば全体の３０〜４０％が、ター
ビン翼車１４及びタービン車室４（タービンスクロール
）を経由せずに、直接ガス出ロアに向かい、排気管１１
を通って排気浄化装置１２に到達する。With this, a part of the exhaust gas, for example 30 to 40% of the total, goes directly to the gas outlet lower without passing through the turbine impeller 14 and the turbine casing 4 (turbine scroll), and directs it to the exhaust pipe 11.
It reaches the exhaust gas purification device 12 through the.
機関運転の継続に伴って排気温度が次第に上昇してくる
と、第４図に示すように、排気浄化装置１２の温度も速
やかに上昇する。即ち従来のように、排気が過給機経由
で排気浄化装置に至る場合は、タービン２自身の加熱或
いは回転仕事に熱エネルギを吸収されて、所定温度Ｔｏ
に到達するまで長い時間（ｔｌ）が掛かっていたが、本
発明の排気供給装置では、無過給エンジンと同等の、短
い時間（ｔ２）で所定温度Ｔ、に達するものである。When the exhaust gas temperature gradually rises as the engine continues to operate, the temperature of the exhaust gas purification device 12 also quickly rises, as shown in FIG. 4. That is, when the exhaust gas reaches the exhaust purification device via a supercharger as in the past, thermal energy is absorbed by the heating or rotational work of the turbine 2 itself, and the temperature reaches the predetermined temperature To.
It took a long time (tl) to reach the predetermined temperature T, but with the exhaust gas supply system of the present invention, the predetermined temperature T can be reached in a short time (t2), which is equivalent to a non-supercharged engine.
所定温度Ｔ０に達すると、排気浄化装ｙｔ１２の触媒が
活性化し、排気中のＣｏ、ＨＣ，ＮＯｘを酸化或いは還
元させて、無害のＣＯ２や８２０などに変える。この時
点で、温度センサ２７が所定温度Ｔ０に達したことを検
知し、コントローラ２９がウェイストゲートバルブ１３
を閉じる（ＳＴ ４） 、これで過給機１のタービン２
には排気の全部が供給できる状態となり、ウェイストゲ
ートバルブによる過給制御を含めた通常の過給を行う。When the predetermined temperature T0 is reached, the catalyst of the exhaust purification device yt12 is activated, and Co, HC, and NOx in the exhaust gas are oxidized or reduced, and converted into harmless CO2, 820, and the like. At this point, the temperature sensor 27 detects that the predetermined temperature T0 has been reached, and the controller 29
Close (ST 4), now the turbine 2 of the supercharger 1
All of the exhaust gas can be supplied to the engine, and normal supercharging including supercharging control using the waste gate valve is performed.
このように、下流側に排気浄化装置１２を備えた過給機
工に、その上流側と下流側とを結ぶバイパス路であるバ
イパスポート１５を、排気汁化装！１．２側の温度が低
い時に、バイパスｌｉ’３開閉手段２６によって排気を
排気浄化装置１２に直接導くようにしたので、過給機が
排気温度に与える影響をなくして、コールドスタート時
にあっても、排気浄化装置１２を触媒か活性化する所定
温度Ｔ０に速やかに到達させることができる。即ち、始
動時の排気ガス処理が可能になった。In this way, the bypass port 15, which is a bypass path connecting the upstream side and the downstream side, is installed in a turbocharger equipped with the exhaust gas purification device 12 on the downstream side. When the temperature on the 1.2 side is low, the exhaust gas is guided directly to the exhaust purification device 12 by the bypass li'3 opening/closing means 26, thereby eliminating the influence of the supercharger on the exhaust gas temperature and reducing the Also, the exhaust purification device 12 can quickly reach the predetermined temperature T0 at which the catalyst is activated. In other words, it has become possible to treat exhaust gas during startup.
そして本発明は極めて簡単な構成であり、特に本実施例
で示したようにウェイストゲートバルブ１３を利用する
ことで、大幅な設計変更を必要とぜず、構造上の強度低
下や製造費の増大化を招くことがない。The present invention has an extremely simple configuration, and in particular, by using the waste gate valve 13 as shown in this embodiment, there is no need for major design changes, resulting in a decrease in structural strength and an increase in manufacturing costs. It does not lead to
なお本実施例ではウェイストゲートバルブ１３をそのま
ま利用したことで、排気の一部のみが排気浄化装置１２
に直接導入されるものであるが、第２図に示すようにバ
イパスポート１５の下流側に排気通路９を開閉するバタ
フライバルブ３１を設けて、ウェイストゲートバルブ１
３が開くと同時にタービン１例を閉鎖することで、排気
の全部を排気浄化装ｊｆｆ １２に直接導入させるよう
にしてもよい。Note that in this embodiment, by using the waste gate valve 13 as is, only a portion of the exhaust gas passes through the exhaust purification device 12.
As shown in FIG. 2, a butterfly valve 31 for opening and closing the exhaust passage 9 is provided on the downstream side of the bypass port 15, and the waste gate valve 1
One example of the turbine may be closed at the same time that 3 is opened, allowing all of the exhaust gas to be introduced directly into the exhaust purification system jff 12.
さらに以上の実施例では、バイパス路及びバイパス路開
閉手段をウェイストゲートバルブ１３を利用して構成し
たが、これとは別個に形成しても当然構わない９例えば
第２図中に示したように、タービン１の入口側排気管８
から分岐するようにバイパス管３２を接続させて、ｑれ
をバイパス路開閉手段（図示時）により適宜開閉させる
ようにしてもよい。Furthermore, in the above embodiments, the bypass passage and the bypass passage opening/closing means are configured using the waste gate valve 13, but of course they may be formed separately from the waste gate valve 13, for example, as shown in FIG. , the inlet side exhaust pipe 8 of the turbine 1
The bypass pipe 32 may be connected so as to branch from the q line, and the q line may be opened and closed as appropriate by a bypass passage opening/closing means (as shown).
そして、排気浄化装置！１２ｒＭの温度情報を得るため
には、上記した温度センサ２７で排気温度を検出するほ
か、エンジン始動からの時間によって排気の温度を間接
的に把握して、排気の制御を行うようにしてもよい、こ
のような検出には、過給機１の制御装置として備えられ
ているコントローラのタイマ機能を利用することも考え
られる。And an exhaust purification device! In order to obtain temperature information of 12 rM, in addition to detecting the exhaust temperature with the above-mentioned temperature sensor 27, the exhaust temperature may be indirectly determined based on the time since the engine is started, and the exhaust may be controlled. For such detection, it is also possible to use a timer function of a controller provided as a control device for the supercharger 1.
［発明の効果］
以上要するに本発明によれば、次のような優れた効果を
発揮する。[Effects of the Invention] In summary, according to the present invention, the following excellent effects are achieved.
（１）請求項１の方法によれば、過給機が排気温度に与
える影響をなくして、排気浄化装置が触媒の活性化温度
に達するまでの時間を短縮させることが簡単にでき、始
動時における排気ガス処理が実現される。(1) According to the method of claim 1, it is possible to easily reduce the time required for the exhaust gas purification device to reach the activation temperature of the catalyst by eliminating the influence of the supercharger on the exhaust gas temperature, and to reduce the time required for the exhaust purification device to reach the catalyst activation temperature. Exhaust gas treatment is realized.
（２）請求項２の装置によれば、大幅な設計変更なく、
確実に活性化温度に達するまでの時間を短縮させること
ができる。(2) According to the device of claim 2, without major design changes,
The time required to reach the activation temperature can be reliably shortened.
第１図は本発明に係る自動車用過給機の排気供給装置の
一実施例を示した部分破断側面図、第２図は他の実施例
を示した断面図、第３図は本発明に係る自動車用過給機
の排気供給方法の一実施例を示したフローチャート、第
４図はその効果を説明するための経過時間と排気浄化装
置の温度との関係図である。
図中、１は自動車用過給機、８．９は排気通路、１２は
排気浄化装置、１５はバイパス路なるバイパスポート、
２６はバイパス路開閉手段である。
第２図
第３図
第４図FIG. 1 is a partially cutaway side view showing one embodiment of the exhaust gas supply device for an automobile supercharger according to the present invention, FIG. FIG. 4 is a flow chart showing one embodiment of the exhaust gas supply method for an automobile supercharger, and FIG. 4 is a diagram showing the relationship between the elapsed time and the temperature of the exhaust gas purification device to explain the effect thereof. In the figure, 1 is an automobile supercharger, 8.9 is an exhaust passage, 12 is an exhaust purification device, 15 is a bypass port,
26 is a bypass path opening/closing means. Figure 2 Figure 3 Figure 4
Claims (1)
排気下流側に配置した自動車用過給機に排気を供給する
に際して、機関始動時に、上記過給機へ供給される上流
側の排気の一部又は全部を、上記排気浄化装置に直接導
くことを特徴とする自動車用過給機の排気供給方法。 ２、所定温度で活性化する触媒を用いた排気浄化装置を
排気下流側に配置した自動車用過給機に、その上流側の
排気通路と上記排気浄化装置までの下流側排気通路とを
結ぶバイパス路を設け、上記排気浄化装置側の温度が上
記所定温度より低い時に上記バイパス路を開放し、所定
温度に達した時に閉成するバイパス路開閉手段を設けた
ことを特徴とする自動車用過給機の排気供給装置。[Claims] 1. When supplying exhaust gas to an automobile supercharger in which an exhaust purification device using a catalyst that is activated at a predetermined temperature is arranged downstream of the exhaust gas, the exhaust gas is supplied to the supercharger at the time of engine startup. A method for supplying exhaust gas to an automobile supercharger, characterized in that part or all of the upstream exhaust gas is directly guided to the exhaust purification device. 2. An automotive supercharger in which an exhaust purification device using a catalyst that is activated at a predetermined temperature is placed downstream of the exhaust gas, and a bypass connecting the upstream exhaust passage and the downstream exhaust passage to the exhaust purification device. A supercharger for an automobile characterized in that a bypass passage opening/closing means is provided, which opens and closes the bypass passage when the temperature on the exhaust gas purification device side is lower than the predetermined temperature, and closes the bypass passage when the temperature reaches the predetermined temperature. Machine exhaust supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2218994A JPH04103817A (en) | 1990-08-22 | 1990-08-22 | Exhaust supplying method and device of supercharger of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2218994A JPH04103817A (en) | 1990-08-22 | 1990-08-22 | Exhaust supplying method and device of supercharger of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04103817A true JPH04103817A (en) | 1992-04-06 |
Family
ID=16728601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2218994A Pending JPH04103817A (en) | 1990-08-22 | 1990-08-22 | Exhaust supplying method and device of supercharger of automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04103817A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2745604A1 (en) * | 1996-02-29 | 1997-09-05 | Aisin Seiki | FUEL TURBOCHARGER |
| EP1219799A3 (en) * | 2000-12-26 | 2002-09-11 | Hitachi, Ltd. | Exhaust gas turbine for internal combustion engine and exhaust turbo-supercharger |
-
1990
- 1990-08-22 JP JP2218994A patent/JPH04103817A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2745604A1 (en) * | 1996-02-29 | 1997-09-05 | Aisin Seiki | FUEL TURBOCHARGER |
| EP1219799A3 (en) * | 2000-12-26 | 2002-09-11 | Hitachi, Ltd. | Exhaust gas turbine for internal combustion engine and exhaust turbo-supercharger |
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