JP2000337135A - Exhaust emission control system for automobile - Google Patents
Exhaust emission control system for automobileInfo
- Publication number
- JP2000337135A JP2000337135A JP11146309A JP14630999A JP2000337135A JP 2000337135 A JP2000337135 A JP 2000337135A JP 11146309 A JP11146309 A JP 11146309A JP 14630999 A JP14630999 A JP 14630999A JP 2000337135 A JP2000337135 A JP 2000337135A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- section
- catalyst
- adsorption
- automobile
- 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.)
- Granted
Links
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
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【技術分野】本発明は，触媒部と吸着部とを用いて自動
車の排ガスを浄化する，自動車用排ガス浄化装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile exhaust gas purifying apparatus for purifying automobile exhaust gas using a catalyst section and an adsorption section.
【０００２】[0002]
【従来技術】従来より，自動車の排ガス中に含まれるＨ
Ｃ，ＣＯ，ＮＯｘ等の有害成分を浄化するために，ハニ
カム構造体等の担体に，白金，ロジウム，パラジウム等
の貴金属を担持した触媒装置が用いられている。しか
し，触媒装置が上記有害成分を浄化するためには，触媒
装置温度が一定以上に達していなければならない。この
ため，エンジン始動直後の触媒装置温度が低いときに
は，上記有害成分を浄化できない。しかも，エンジン始
動直後は，排出されるＨＣ（以下コールドＨＣという）
量が多く，このＨＣが浄化されないまま大気に放出され
る。2. Description of the Related Art Conventionally, H contained in exhaust gas of automobiles has been known.
In order to purify harmful components such as C, CO, and NOx, a catalyst device that supports a noble metal such as platinum, rhodium, or palladium on a carrier such as a honeycomb structure is used. However, in order for the catalytic device to purify the harmful components, the temperature of the catalytic device must reach a certain level or higher. Therefore, when the temperature of the catalyst device is low immediately after the start of the engine, the harmful components cannot be purified. Moreover, immediately after the engine is started, HC is discharged (hereinafter referred to as cold HC).
The amount is large and this HC is released to the atmosphere without purification.
【０００３】この問題を解決すると共に，触媒活性，吸
着性能を向上すべく，触媒装置と，その下流側に配置し
た吸着材とを有し，簡単かつ安価な構造で吸着材への有
害成分の吸着及び脱離浄化を行なうことができる自動車
用排ガス浄化装置が提案されている（特開平６−２２９
２２３号公報）。この装置では，暖気運転時には下流側
の吸着材によりコールドＨＣを吸着しておき，エンジン
暖気後は，上記吸着材に吸着させたコールドＨＣを離脱
させて，コールドＨＣを触媒装置側へ戻して浄化を行な
う。[0003] In order to solve this problem and to improve the catalytic activity and adsorption performance, it has a catalyst device and an adsorbent disposed downstream thereof, and has a simple and inexpensive structure to remove harmful components to the adsorbent. An exhaust gas purifying apparatus for automobiles capable of performing adsorption and desorption purification has been proposed (JP-A-6-229).
223). In this device, cold HC is adsorbed by the adsorbent on the downstream side during the warm-up operation, and after the engine is warmed up, the cold HC adsorbed on the adsorbent is released, and the cold HC is returned to the catalyst device side for purification. Perform
【０００４】ところが，この自動車用排ガス浄化装置
は，上記触媒装置と吸着材が別々に搭載されているた
め，小型化が困難であった。そこで，発明者は，外側部
分に吸着部を有すると共に該吸着部よりも内側に触媒部
を有するハニカム構造体からなる吸着触媒モジュールを
有する，自動車用排ガス浄化装置を提案した。これによ
り，上記自動車用排ガス浄化装置の小型化を可能として
いる。However, in this exhaust gas purifying apparatus for automobiles, it is difficult to reduce the size because the catalyst device and the adsorbent are separately mounted. Therefore, the inventor has proposed an exhaust gas purifying apparatus for an automobile, which has an adsorption catalyst module having a honeycomb structure having an adsorption portion on an outer portion and a catalyst portion inside the adsorption portion. This makes it possible to reduce the size of the exhaust gas purifying apparatus for automobiles.
【０００５】[0005]
【解決しようとする課題】しかしながら，上記自動車用
排ガス浄化装置においては，上記吸着部に流入した排ガ
スを上記触媒部へ折り返すために，上記ハニカム構造体
の後端部に後端隔壁を周状に設ける必要がある。一方，
該後端隔壁は通常金属製であるのに対し，上記ハニカム
構造体はセラミック製である。そのため，両者は溶接す
ることができず，また熱膨張率が異なるため，接合する
ことが困難である。それ故，両者の間から排ガスが流出
し，有害成分を含む排ガスが外部へ放出されるおそれが
ある。However, in the exhaust gas purifying apparatus for an automobile, in order to turn the exhaust gas flowing into the adsorbing section back to the catalyst section, a rear end partition wall is formed at the rear end of the honeycomb structure. Must be provided. on the other hand,
The rear end partition is usually made of metal, whereas the honeycomb structure is made of ceramic. Therefore, the two cannot be welded, and the coefficients of thermal expansion are different, so that it is difficult to join them. Therefore, the exhaust gas may flow out from between the two, and the exhaust gas containing harmful components may be released to the outside.
【０００６】本発明は，かかる従来の問題点に鑑みてな
されたもので，小型化が可能で，かつ有害成分の放出を
確実に防止することができる自動車用排ガス浄化装置を
提供しようとするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide an exhaust gas purifying apparatus for an automobile which can be reduced in size and can reliably prevent emission of harmful components. It is.
【０００７】[0007]
【課題の解決手段】請求項１に記載の発明は，エンジン
の排気管の途中に配設された吸着触媒モジュールを有す
る自動車用排ガス浄化装置であって，上記吸着触媒モジ
ュールは，ハウジング内に装着され，吸着材を担持した
ドーナツ状のハニカム構造体からなる吸着部と，該吸着
部の内側に管状隔壁を介して設けたメイン流路と，該メ
イン流路に配設され，触媒を担持したハニカム構造体か
らなる触媒部とからなり，かつ，上記管状隔壁には，上
記触媒部の上流側において，上記吸着部と上記触媒部と
を連通する開口部が設けられ，また，上記管状隔壁にお
ける上記開口部の上流側には上記排ガスの上記触媒部へ
の導入を制御するための切替手段が配設され，上記吸着
部が排ガス中の有害成分を吸着する吸着時には，上記排
ガスが上記開口部を通じて上記吸着部から上記触媒部へ
流入するよう構成してあることを特徴とする自動車用排
ガス浄化装置にある。According to a first aspect of the present invention, there is provided an exhaust gas purifying apparatus for an automobile having an adsorption catalyst module disposed in an exhaust pipe of an engine, wherein the adsorption catalyst module is mounted in a housing. And an adsorbing portion formed of a donut-shaped honeycomb structure carrying an adsorbent, a main flow passage provided inside the adsorbing portion through a tubular partition, and a catalyst disposed in the main flow passage and carrying a catalyst. An opening communicating with the adsorbing section and the catalyst section is provided in the tubular partition at an upstream side of the catalyst section; A switching means for controlling the introduction of the exhaust gas into the catalyst section is disposed upstream of the opening, and when the adsorbing section adsorbs harmful components in the exhaust gas, the exhaust gas flows through the opening section. In automobile exhaust gas purification apparatus characterized by are configured to flow from the suction unit to the catalyst unit through.
【０００８】本発明において最も注目すべきことは，上
記吸着触媒モジュールは，ドーナツ状のハニカム構造体
からなる吸着部と，該吸着部の内側に管状隔壁を介して
設けたメイン流路と，該メイン流路に配設されたハニカ
ム構造体からなる触媒部とからなることである。なお，
上記有害成分としては，例えば炭化水素（ＨＣ），一酸
化炭素（ＣＯ），窒素酸化物（ＮＯｘ）等がある。ま
た，上流側とは，排ガスの上記吸着触媒モジュールへの
導入側をいい，下流側とは排出側をいう。[0008] Most notably, in the present invention, the adsorption catalyst module includes an adsorbing section formed of a donut-shaped honeycomb structure, a main flow path provided through a tubular partition inside the adsorbing section, and And a catalyst section comprising a honeycomb structure disposed in the main flow path. In addition,
Examples of the harmful components include hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx). Further, the upstream side refers to a side where the exhaust gas is introduced into the adsorption catalyst module, and the downstream side refers to a discharge side.
【０００９】本発明の自動車用排ガス浄化装置による排
ガス浄化作用の一例につき説明する。エンジン始動直後
等上記触媒部が活性状態にないときには，上記吸着部が
排ガス中の有害成分を吸着する。この吸着時には，エン
ジンから排出された上記排ガスを上記吸着部へ導入し，
次いで上記開口部を通じて上記触媒部へ流入させる。こ
れにより，上記触媒部が活性状態になくとも，有害成分
は上記吸着部に吸着され外部へ放出されない。An example of the exhaust gas purifying operation of the vehicle exhaust gas purifying apparatus of the present invention will be described. When the catalyst section is not in an active state, for example, immediately after starting the engine, the adsorption section adsorbs harmful components in the exhaust gas. During this adsorption, the exhaust gas discharged from the engine is introduced into the adsorption section,
Next, it flows into the catalyst section through the opening. Thus, even if the catalyst section is not in an active state, the harmful components are adsorbed by the adsorption section and are not released to the outside.
【００１０】一方，上記エンジンが暖気状態になり，触
媒部が活性状態となった時には，上記エンジンから排出
された排ガスの大部分を，上記メイン流路から上記触媒
部へ直接導入し，該触媒部において上記有害成分を浄化
する。また，この時は上記吸着部へは有害成分を吸着さ
せない。この非吸着時には，エンジンから排出された上
記排ガスの一部を上記触媒部へも導入し，吸着部へ流入
させる。これにより，上記吸着部に吸着されていた有害
成分を離脱させ，該有害成分を上記触媒部において浄化
する。On the other hand, when the engine is warmed up and the catalyst section is activated, most of the exhaust gas discharged from the engine is directly introduced from the main flow path to the catalyst section, and Purify the above harmful components. At this time, no harmful components are adsorbed on the adsorbing section. At the time of the non-adsorption, a part of the exhaust gas discharged from the engine is also introduced into the catalyst section and flows into the adsorption section. As a result, the harmful components adsorbed on the adsorption section are released, and the harmful components are purified in the catalyst section.
【００１１】次に，本発明の作用効果につき説明する。
上記吸着触媒モジュールは，上記のごとく，ドーナツ状
のハニカム構造体からなる吸着部と，該吸着部の内側に
管状隔壁を介して設けたメイン流路と，該メイン流路に
設けた触媒部とからなる。Next, the operation and effect of the present invention will be described.
As described above, the adsorption catalyst module includes an adsorbing portion formed of a donut-shaped honeycomb structure, a main channel provided inside the adsorbing portion via a tubular partition, and a catalyst portion provided in the main channel. Consists of
【００１２】即ち，上記管状隔壁は上記吸着部の内側側
面に接合され，また，上記管状隔壁の内側側面に上記触
媒部の外側側面を接合することにより，上記吸着触媒モ
ジュールを構成している。そのため，上記吸着触媒モジ
ュールにおいては，上記ハニカム構造体の端面における
接合を行なう必要がない。That is, the tubular partition wall is joined to the inner side surface of the adsorbing section, and the outer side surface of the catalyst section is joined to the inner side surface of the tubular partition wall to constitute the adsorption catalyst module. Therefore, in the adsorption catalyst module, it is not necessary to perform joining at the end face of the honeycomb structure.
【００１３】それ故，上記吸着触媒モジュールは，接合
困難な接合箇所も，不安定な接合箇所もなく構成され
る。これにより，排ガスは上述したような予定通りの流
路を確実に通過するため，有害成分が外部へ放出するお
それがない。また，上記吸着部と触媒部とは，上記管状
隔壁を介して一体的に構成されるため，上記自動車用排
ガス浄化装置を小型化することができる。[0013] Therefore, the above-mentioned adsorption catalyst module has no difficult-to-join or no unstable joint. As a result, the exhaust gas surely passes through the intended flow path as described above, and there is no possibility that harmful components are released to the outside. Further, since the adsorbing section and the catalyst section are integrally formed via the tubular partition, the exhaust gas purifying apparatus for a vehicle can be reduced in size.
【００１４】以上のごとく，本発明によれば，小型化が
可能で，かつ有害成分の放出を確実に防止することがで
きる自動車用排ガス浄化装置を提供することができる。As described above, according to the present invention, it is possible to provide an automobile exhaust gas purifying apparatus which can be reduced in size and can surely prevent the emission of harmful components.
【００１５】次に，請求項２に記載の発明のように，上
記吸着部と上記管状隔壁との間には，両者の間に介設し
た支持部材により形成された管状空洞部が設けられてお
り，上記排ガスは，上記吸着部，管状空洞部を経由して
上記メイン流路に流入するよう構成してあることが好ま
しい。これにより，上記吸着部を通過した排ガスの流路
を，効率的に折り返すことが可能となり，上記自動車用
排ガス浄化装置の一層の小型化を図ることができる。な
お，上記支持部材は，上記排ガスの洩れを防ぐシール部
材としての役割をも有する。Next, as in the second aspect of the present invention, a tubular cavity formed by a support member interposed between the suction part and the tubular partition is provided between the suction part and the tubular partition. Preferably, the exhaust gas is configured to flow into the main flow path via the adsorption section and the tubular cavity. As a result, the flow path of the exhaust gas that has passed through the adsorption section can be efficiently turned back, and the automobile exhaust gas purification device can be further reduced in size. The support member also has a role as a seal member for preventing the exhaust gas from leaking.
【００１６】次に，請求項３に記載の発明のように，上
記触媒部は，上記吸着部の後端部よりも下流側に設けら
れていることが好ましい。これにより，上記吸着部を形
成するドーナツ状の内側の直径を小さくすると共に，上
記触媒部の直径を大きくすることができる。そのため，
上記吸着触媒モジュールの直径を大きくすることなく，
排ガスが通過する上記触媒部及び吸着部の断面積を大き
くすることができる。それ故，上記自動車用排ガス浄化
装置の浄化効率が向上する。Next, as in the third aspect of the present invention, it is preferable that the catalyst section is provided downstream of a rear end of the adsorption section. Thus, the diameter of the inside of the donut forming the adsorbing portion can be reduced, and the diameter of the catalyst portion can be increased. for that reason,
Without increasing the diameter of the adsorption catalyst module,
The cross-sectional area of the catalyst section and the adsorption section through which the exhaust gas passes can be increased. Therefore, the purification efficiency of the vehicle exhaust gas purification device is improved.
【００１７】次に，請求項４に記載の発明のように，上
記開口部は，上記吸着部の後端部と上記触媒部の前端部
との間における上記管状隔壁に設けられていることが好
ましい。これにより，上記吸着部の内側側面の全面を上
記管状隔壁に接合することが可能である。そのため，上
記吸着部と管状隔壁との接合を一層容易かつ確実に行な
うことができる。また，この場合には，上記吸着部を通
過した排ガスが，折り返されることなく，そのまま上記
触媒部へ流入するため，排ガス流れが一層円滑となる。Next, as in the invention according to claim 4, the opening is provided in the tubular partition wall between the rear end of the adsorbing section and the front end of the catalyst section. preferable. This makes it possible to join the entire inner side surface of the suction section to the tubular partition. Therefore, the joining of the suction part and the tubular partition can be performed more easily and reliably. Further, in this case, the exhaust gas that has passed through the adsorption section flows into the catalyst section without being folded back, so that the flow of the exhaust gas is further smoothed.
【００１８】次に，請求項５に記載の発明のように，上
記切替手段は，上記吸着時には上記排ガスを上記吸着部
に導入するよう切替え，非吸着時には主に触媒部へ導入
するよう切替えるアクチュエータを有していることが好
ましい。これにより，上記排ガス流路の切替を確実に行
なうことが可能となる。Next, as in the invention as set forth in claim 5, the switching means switches the exhaust gas to be introduced into the adsorption section at the time of the adsorption, and switches to mainly introduce the exhaust gas to the catalyst section at the time of the non-adsorption. It is preferable to have This makes it possible to reliably switch the exhaust gas channel.
【００１９】次に，請求項６に記載の発明のように，上
記支持部材は吸着材を担持していることが好ましい。こ
れにより，上記吸着部を通過する前の排ガスが，上記支
持部材の部分から洩れた場合にも，上記支持部材に担持
された吸着材によって有害成分を吸着することができ
る。そのため，有害成分の放出を一層確実に防止するこ
とができる自動車用排ガス浄化装置を得ることができ
る。Next, as in the sixth aspect of the present invention, the support member preferably carries an adsorbent. Thus, even if the exhaust gas before passing through the adsorption section leaks from the support member, the harmful component can be adsorbed by the adsorbent carried on the support member. Therefore, it is possible to obtain an automobile exhaust gas purifying apparatus capable of more reliably preventing the release of harmful components.
【００２０】次に，請求項７に記載の発明のように，上
記支持部材は，所定の間隔をもって複数本配設してあ
り，該複数本の支持部材と上記吸着部と上記管状隔壁と
により形成される空間には，吸着材を充填してあること
が好ましい。これにより，上記吸着部を通過する前の排
ガスが，上記支持部材の部分から洩れた場合にも，上記
空間に充填された吸着材によって有害成分を吸着するこ
とができる。そのため，有害成分の放出を一層確実に防
止することができる自動車用排ガス浄化装置を得ること
ができる。Next, a plurality of the support members are provided at a predetermined interval, and the plurality of support members, the suction section, and the tubular partition wall are provided. The space formed is preferably filled with an adsorbent. Thereby, even if the exhaust gas before passing through the adsorption section leaks from the portion of the support member, the harmful component can be adsorbed by the adsorbent filled in the space. Therefore, it is possible to obtain an automobile exhaust gas purifying apparatus capable of more reliably preventing the release of harmful components.
【００２１】[0021]
【発明の実施の形態】実施形態例１ 本発明の実施形態例にかかる自動車用排ガス浄化装置に
つき，図１〜図６を用いて説明する。本例の自動車用排
ガス浄化装置１は，図２に示すごとく，エンジン７の排
気管７２の途中に配設された吸着触媒モジュール１０を
有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An automotive exhaust gas purifying apparatus according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, the automotive exhaust gas purifying apparatus 1 of the present embodiment has an adsorption catalyst module 10 disposed in the exhaust pipe 72 of the engine 7.
【００２２】上記吸着触媒モジュール１０は，図１に示
すごとく，ハウジング２内に装着され，吸着材を担持し
たドーナツ状のハニカム構造体からなる吸着部１１を有
する。該吸着部１１の内側には，管状隔壁３を介して設
けたメイン流路３０が形成されている。該メイン流路３
０の下流側（図１の右方側）には，触媒を担持したハニ
カム構造体からなる触媒部１２が配設してある。As shown in FIG. 1, the adsorbing catalyst module 10 has an adsorbing portion 11 which is mounted in the housing 2 and has a donut-shaped honeycomb structure carrying an adsorbent. A main flow path 30 provided through the tubular partition wall 3 is formed inside the suction section 11. The main channel 3
On the downstream side of 0 (on the right side in FIG. 1), a catalyst section 12 composed of a honeycomb structure supporting a catalyst is disposed.
【００２３】そして，上記管状隔壁３には，上記触媒部
１２の上流側（図１の左方側）において，上記吸着部１
１と上記触媒部１２とを連通する開口部３１が設けられ
ている。また，上記管状隔壁３における上記開口部３１
の上流側には上記排ガス８の上記触媒部１２への導入を
制御するための切替手段５が配設されている。上記自動
車用排ガス浄化装置１は，上記吸着部１１が排ガス８中
のコールドＨＣ等の有害成分を吸着する吸着時には，上
記排ガス８が上記開口部３１を通じて上記吸着部１１か
ら上記触媒部１２へ流入するよう構成してある。なお，
上記切替手段５の上流側における上記管状隔壁３には，
貫通穴３２が設けてある。The adsorbing section 1 is provided on the tubular partition 3 upstream of the catalyst section 12 (left side in FIG. 1).
An opening 31 is provided for communicating the catalyst unit 1 with the catalyst unit 12. Further, the opening 31 in the tubular partition 3 is provided.
A switching means 5 for controlling the introduction of the exhaust gas 8 into the catalyst section 12 is disposed on the upstream side. When the adsorption unit 11 adsorbs harmful components such as cold HC in the exhaust gas 8, the exhaust gas 8 flows from the adsorption unit 11 into the catalyst unit 12 through the opening 31. It is configured to do. In addition,
The tubular partition 3 on the upstream side of the switching means 5 includes:
A through hole 32 is provided.
【００２４】上記吸着部１１と上記管状隔壁３との間に
は，両者の間に介設した支持部材４により形成された管
状空洞部１３が設けられている。上記排ガス８は，図１
の破線矢印に示すように，上記吸着部１１，管状空洞部
１３を経由して上記メイン流路３０に流入する。Between the adsorbing portion 11 and the tubular partition wall 3, there is provided a tubular hollow portion 13 formed by a support member 4 interposed therebetween. The exhaust gas 8 shown in FIG.
As shown by the dashed arrow, the liquid flows into the main flow path 30 via the suction section 11 and the tubular hollow section 13.
【００２５】図１，図４に示すごとく，上記吸着部１１
の外側側面は，保持部材２４を介して上記ハウジング２
の内側側面に接合されている。上記吸着部１１の内側側
面１１４には，上記支持部材４を介して上記管状隔壁３
が配設されている。そして，上記管状隔壁３の内側側面
には，保持部材３４を介して上記触媒部１２の外側側面
が接合されている。As shown in FIG. 1 and FIG.
The outer side surface of the housing 2
Is joined to the inner side surface. The tubular partition wall 3 is provided on the inner side surface 114 of the suction section 11 via the support member 4.
Are arranged. The outer side surface of the catalyst section 12 is joined to the inner side surface of the tubular partition 3 via a holding member 34.
【００２６】図２に示すごとく，上記自動車用排ガス浄
化装置１は，エンジン７の下流の排気管７２の途中に設
けられたスタート触媒１４と上記吸着触媒モジュール１
０，及び切替制御装置５０とからなる。上記スタート触
媒１４は，エンジン始動時における排ガスの浄化に用い
られる，ハニカム構造体に触媒を担持してなる触媒装置
である。また，上記切替制御装置５０は，下記に示す切
替手段５の切替を行なうアクチュエータ５３を制御する
装置である。As shown in FIG. 2, the automotive exhaust gas purifying apparatus 1 includes a start catalyst 14 provided in the exhaust pipe 72 downstream of the engine 7 and the adsorption catalyst module 1.
0, and the switching control device 50. The start catalyst 14 is a catalyst device that is used for purifying exhaust gas at the time of starting the engine and has a catalyst supported on a honeycomb structure. The switching control device 50 is a device that controls an actuator 53 that performs switching of the switching means 5 described below.
【００２７】上記切替手段５は，上記吸着時には上記排
ガス８を上記吸着部１１に導入するよう切替え，非吸着
時には主に触媒部１２へ導入するよう切替えるアクチュ
エータ５３を有している（図２）。また，上記切替手段
５は，図３に示すごとく，上記管状隔壁３に回動可能に
取付けられた回動軸５８と，該回動軸５８に固定され，
上記管状隔壁３の内周形状と略同形状の開閉弁５９とか
らなる。図３において，実線で示した開閉弁５９は閉止
時の状態を表し，二点鎖線で示した開閉弁５９は開放時
の状態を表す。The switching means 5 has an actuator 53 for switching so as to introduce the exhaust gas 8 into the adsorbing section 11 during the adsorption, and switching mainly to introduce the exhaust gas 8 into the catalyst section 12 during non-adsorption (FIG. 2). . Further, as shown in FIG. 3, the switching means 5 has a rotating shaft 58 rotatably attached to the tubular partition wall 3 and is fixed to the rotating shaft 58.
The on-off valve 59 has substantially the same shape as the inner peripheral shape of the tubular partition wall 3. In FIG. 3, the on / off valve 59 shown by a solid line represents a state at the time of closing, and the on / off valve 59 shown by a two-dot chain line represents a state at the time of opening.
【００２８】上記支持部材４は，図５（Ａ）に示すごと
く，上記開口部３１の上流側において，上記吸着部１１
と上記管状隔壁１３との間に設けてある。そして，上記
支持部材４は吸着材を担持している。なお，上記支持部
材４は，図５（Ｂ）に示すごとく，所定の間隔をもって
２本配設し，該２本の支持部材４と上記吸着部１１と上
記管状隔壁１３とにより形成される空間に，吸着材４１
を充填してもよい。As shown in FIG. 5A, the support member 4 is provided on the upstream side of the opening 31 with the suction section 11.
And the tubular partition wall 13. The support member 4 carries an adsorbent. As shown in FIG. 5B, two support members 4 are provided at a predetermined interval, and a space formed by the two support members 4, the suction part 11, and the tubular partition wall 13 is provided. The adsorbent 41
May be filled.
【００２９】次に，上記切替制御装置５０による上記切
替手段５の切替につき，図６を用いて説明する。まず，
ステップＳ１として，エンジン始動時にコントローラ５
２（図２）のタイマーがリセットされる。次に，ステッ
プＳ２において，エンジン７の水温Ｔwと設定温度Ｔw0
とを比較する。Ｔw＞Ｔw0の場合には，触媒部１２の触
媒が活性状態にあると判断し，切替手段５を開放して，
大部分の排ガス８を上記触媒部１２に導入する（図１の
実線矢印）。Next, switching of the switching means 5 by the switching control device 50 will be described with reference to FIG. First,
At step S1, the controller 5
2 (FIG. 2) is reset. Next, in step S2, the water temperature Tw of the engine 7 and the set temperature Tw 0
Compare with If Tw> Tw 0 , it is determined that the catalyst of the catalyst unit 12 is in the active state, and the switching unit 5 is opened to
Most of the exhaust gas 8 is introduced into the catalyst section 12 (solid arrow in FIG. 1).
【００３０】一方，Ｔw≦Ｔw0の場合には，触媒部１２
の触媒が未活性状態にあると判断し，切替手段５を閉止
して，排ガス８の全量を上記貫通穴３２を通じて上記吸
着部１１に導入する（ステップＳ３）。これにより，排
ガス８は上記吸着部１１を通過し，上記管状空洞部１３
に折り返される。そして，上記排ガス８は，上記管状空
洞部１３から上記開口部３１を通じてメイン流路３０に
流入し，上記触媒部１２を通過する（図１の破線矢
印）。On the other hand, if Tw ≦ Tw 0 , the catalyst unit 12
Is determined to be in an inactive state, the switching means 5 is closed, and the entire amount of the exhaust gas 8 is introduced into the adsorption section 11 through the through hole 32 (step S3). As a result, the exhaust gas 8 passes through the adsorbing section 11 and passes through the tubular hollow section 13.
Will be folded back. Then, the exhaust gas 8 flows from the tubular cavity 13 through the opening 31 into the main flow path 30 and passes through the catalyst 12 (broken arrow in FIG. 1).
【００３１】この時，上記コントローラ５２のタイマー
はエンジン始動（Ｓ１）からの時間をカウントしてお
り，その時間ｔと所定時間ｔ0とを比較する（ステップ
Ｓ４）。次に，ｔ≧ｔ0となったとき，上記スタート触
媒１４の温度が上昇して触媒が活性状態となったと判断
して，上記切替手段５を開放する（ステップＳ５）。こ
れにより，排ガス８を上記触媒部１２に直接導入して通
過させる（図１の実線矢印）。また，この時，排ガス８
の一部は上記吸着部１１に導入される。更にこの状態で
数秒〜数十秒運転することにより，上記触媒部１２が活
性化する。[0031] At this time, the timer of the controller 52 has counted the time from engine start (S1), and compares the time t with a predetermined time t 0 (step S4). Next, when t ≧ t 0 , it is determined that the temperature of the start catalyst 14 has risen and the catalyst has been activated, and the switching means 5 is opened (step S5). As a result, the exhaust gas 8 is directly introduced into and passed through the catalyst section 12 (solid arrow in FIG. 1). At this time, the exhaust gas 8
Is introduced into the suction section 11. Further, by operating for several seconds to several tens of seconds in this state, the catalyst unit 12 is activated.
【００３２】なお，切替手段５の切替は，以下のように
行なう。即ち，上記アクチュエータ５３は，配管５５に
よって，電磁弁５４を介して上記エンジン７の吸気部７
１と接続されている。上記吸気部７１は，エンジン作動
時には常に負圧となっている。上記コントローラ５２の
信号により，上記電磁弁５４が開閉することにより，そ
の負圧が上記アクチュエータ５３に作用し上記切替手段
５を開閉する。The switching of the switching means 5 is performed as follows. That is, the actuator 53 is connected to the intake section 7 of the engine 7 through the solenoid valve 54 by the pipe 55.
1 is connected. The intake section 71 is always at a negative pressure when the engine is operating. When the solenoid valve 54 opens and closes according to a signal from the controller 52, the negative pressure acts on the actuator 53 to open and close the switching means 5.
【００３３】次に，本例の自動車用排ガス浄化装置１に
よる排ガス浄化作用につき説明する。上記スタート触媒
１４はエンジン７の直後に配置してあるため，エンジン
始動から比較的短時間で活性状態となる。しかし，エン
ジン始動直後等，エンジン７自体の温度が低いときに
は，上記スタート触媒１４が未活性状態にある。Next, the exhaust gas purifying operation of the automotive exhaust gas purifying apparatus 1 of this embodiment will be described. Since the start catalyst 14 is disposed immediately after the engine 7, it is activated in a relatively short time after the engine is started. However, when the temperature of the engine 7 itself is low, such as immediately after the start of the engine, the start catalyst 14 is in an inactive state.
【００３４】そこで，上述のごとく，エンジン７の水温
を確認して，これが設定値よりも低いときには，上記ス
タート触媒１４も未活性であると判断する。そして，エ
ンジン７から排出され上記スタート触媒１４を通過した
上記排ガス８を上記吸着部１１へ導入し，次いで上記触
媒部１２へ流入させる（図１の破線矢印）。これによ
り，上記触媒部１２及びスタート触媒１４が活性状態に
なくとも，コールドＨＣ，ＣＯ，ＮＯx等の有害成分
は，上記吸着部１１に吸着され外部へ放出されない。Therefore, as described above, the water temperature of the engine 7 is checked, and if this is lower than the set value, it is determined that the start catalyst 14 is also inactive. Then, the exhaust gas 8 discharged from the engine 7 and passed through the start catalyst 14 is introduced into the adsorption section 11 and then flows into the catalyst section 12 (broken arrow in FIG. 1). As a result, harmful components such as cold HC, CO, and NOx are adsorbed by the adsorber 11 and are not released to the outside even if the catalyst unit 12 and the start catalyst 14 are not in an active state.
【００３５】一方，上記エンジン７が暖気状態になり，
スタート触媒１４が活性状態となった時には，上記エン
ジン７から排出され，スタート触媒１４を通過した排ガ
ス８の大部分を，上記触媒部１２へ直接導入する。この
状態で数秒〜数十秒運転すると，上記触媒部１２が活性
化し，該触媒部１２においてヒートＨＣ等の上記有害成
分が浄化される（図１の実線矢印）。On the other hand, the engine 7 is warmed up,
When the start catalyst 14 is activated, most of the exhaust gas 8 discharged from the engine 7 and passing through the start catalyst 14 is directly introduced into the catalyst section 12. If the operation is performed for several seconds to several tens of seconds in this state, the catalyst unit 12 is activated, and the harmful components such as heat HC are purified in the catalyst unit 12 (solid arrows in FIG. 1).
【００３６】また，この時はエンジン７から排出された
上記排ガス８の一部を，上記吸着部１１を経て，触媒部
１２へ流入させる。これにより，上記吸着部１１に吸着
されていたコールドＨＣ等の有害成分を排ガス８中へ離
脱させ，該有害成分を上記触媒部１２において浄化す
る。即ち，この状態では，有害成分を上記吸着部１１へ
吸着させない，非吸着時となる。At this time, a part of the exhaust gas 8 discharged from the engine 7 flows into the catalyst section 12 through the adsorption section 11. As a result, harmful components such as cold HC that have been adsorbed by the adsorption unit 11 are released into the exhaust gas 8, and the harmful components are purified by the catalyst unit 12. That is, in this state, the harmful component is not adsorbed to the adsorbing section 11 and is not adsorbed.
【００３７】次に，本例の作用効果につき説明する。上
記吸着触媒モジュール１０は，上記のごとく，ドーナツ
状のハニカム構造体からなる吸着部１１と，該吸着部１
１の内側に管状隔壁３を介して設けたメイン流路３０
と，該メイン流路３０の下流側に設けた触媒部１２とか
らなる（図１）。Next, the operation and effect of this embodiment will be described. As described above, the adsorption catalyst module 10 includes an adsorption unit 11 formed of a donut-shaped honeycomb structure and the adsorption unit 1.
Main channel 30 provided inside tubular wall 1 via tubular partition 3
And a catalyst section 12 provided downstream of the main flow path 30 (FIG. 1).
【００３８】即ち，上記吸着触媒モジュール１０は，上
記管状隔壁３を上記吸着部１１の内側側面１１４に上記
支持部材４を介して配設し，また，上記管状隔壁３の内
側側面に上記触媒部１２の外側側面を保持部材３４を介
して接合することにより構成されている。そのため，上
記吸着触媒モジュール１０においては，上記ハニカム構
造体の端面における接合を行なう必要がない。That is, in the adsorption catalyst module 10, the tubular partition 3 is disposed on the inner side surface 114 of the adsorbing section 11 via the support member 4, and the catalyst section is disposed on the inner side surface of the tubular partition 3. It is configured by joining the outer side surfaces of the twelve through a holding member. Therefore, in the adsorption catalyst module 10, it is not necessary to perform joining at the end face of the honeycomb structure.
【００３９】それ故，上記吸着触媒モジュール１０は，
接合困難な接合箇所も，不安定な接合箇所もなく構成さ
れる。これにより，排ガス８は上述したような予定通り
の流路を確実に通過するため，有害成分が外部へ放出さ
れるおそれがない。また，上記吸着部１１と触媒部１２
とは，上記管状隔壁３を介して一体的に構成されるた
め，上記自動車用排ガス浄化装置１を小型化することが
できる。Therefore, the adsorption catalyst module 10 is
There are no difficult joints and no unstable joints. As a result, the exhaust gas 8 reliably passes through the flow path as described above, and there is no possibility that harmful components are released to the outside. In addition, the adsorption unit 11 and the catalyst unit 12
Is integrally formed via the tubular partition wall 3, so that the exhaust gas purifying apparatus 1 for a vehicle can be reduced in size.
【００４０】また，上記吸着部１１と上記管状隔壁３と
の間には，上記管状空洞部１３が設けられている。その
ため，上記吸着部１１を通過した排ガス８の流路を，効
率的に折り返すことが可能となり，上記自動車用排ガス
浄化装置１の一層の小型化を図ることができる。The tubular cavity 13 is provided between the suction part 11 and the tubular partition wall 3. Therefore, the flow path of the exhaust gas 8 that has passed through the adsorbing section 11 can be efficiently turned back, and the automobile exhaust gas purifying apparatus 1 can be further reduced in size.
【００４１】また，上記切替手段５は，上記吸着時と非
吸着時における，上記排ガス８の上記吸着部１１への導
入を切替えるアクチュエータ５３を有している。そのた
め，上記排ガス流路の切替を確実に行なうことが可能と
なる。The switching means 5 has an actuator 53 for switching the introduction of the exhaust gas 8 into the adsorption section 11 during the adsorption and the non-adsorption. Therefore, it is possible to reliably switch the exhaust gas channel.
【００４２】また，上記支持部材４は吸着材を担持して
いるため，上記吸着部１１を通過する前の排ガス８が，
上記支持部材４の部分から洩れた場合にも，上記支持部
材４に担持された吸着材によって有害成分を吸着するこ
とができる。そのため，有害成分の放出を一層確実に防
止することができる。即ち，上記貫通穴３２から導入さ
れた排ガス８が，上記吸着部１１を通過する前に，上記
支持部材４から上記管状空洞部１４へ直接流入した場合
にも，有害成分は上記支持部材４に担持された吸着材に
より吸着される。Since the support member 4 carries an adsorbent, the exhaust gas 8 before passing through the adsorber 11 is
Even in the case of leakage from the support member 4, harmful components can be adsorbed by the adsorbent carried on the support member 4. Therefore, release of harmful components can be more reliably prevented. That is, even when the exhaust gas 8 introduced from the through hole 32 directly flows into the tubular cavity 14 from the support member 4 before passing through the adsorbing section 11, the harmful component enters the support member 4. Adsorbed by the adsorbent carried.
【００４３】以上のごとく，本例によれば，小型化が可
能で，かつ有害成分の放出を確実に防止することができ
る自動車用排ガス浄化装置を提供することができる。As described above, according to the present embodiment, it is possible to provide an exhaust gas purifying apparatus for an automobile which can be reduced in size and can reliably prevent the emission of harmful components.
【００４４】実施形態例２ 本例は，図７，図８に示すごとく，触媒部１２が，吸着
部１１の後端部１１９よりも下流側に設けられている吸
着触媒モジュール１０を有する自動車用排ガス浄化装置
の例である。即ち，上記触媒部１２の前端部１２１は，
上記吸着部１１の後端部１１９よりも下流側に配置され
ている（図７）。Embodiment 2 In this embodiment, as shown in FIGS. 7 and 8, a catalyst unit 12 has an adsorption catalyst module 10 provided downstream of a rear end 119 of an adsorption unit 11 for an automobile. It is an example of an exhaust gas purification device. That is, the front end 121 of the catalyst unit 12 is
It is located downstream of the rear end 119 of the suction section 11 (FIG. 7).
【００４５】上記吸着触媒モジュール１０のメイン流路
３０は，図７に示すごとく，上記吸着部１１を形成する
ドーナツ状の内側における小径部３０１と，その下流側
における大径部３０２とからなる。該大径部３０２に
は，上記触媒部１２が設けられている。その他は，実施
形態例１と同様である。As shown in FIG. 7, the main flow path 30 of the adsorption catalyst module 10 includes a small diameter portion 301 inside the donut forming the adsorption portion 11 and a large diameter portion 302 downstream thereof. The catalyst part 12 is provided in the large diameter part 302. Other configurations are the same as those of the first embodiment.
【００４６】上記触媒部１２は，上記メイン流路３０の
大径部３０２に設けてあるため，上記触媒部１２の断面
積を大きくすることができる（図７）。一方，上記吸着
部１１は，上記メイン流路３０の小径部３０１の外側に
ドーナツ状に設けてあるため，図８に示すごとく，上記
吸着部１１の断面積も大きくすることができる。Since the catalyst section 12 is provided in the large-diameter section 302 of the main flow path 30, the cross-sectional area of the catalyst section 12 can be increased (FIG. 7). On the other hand, since the suction portion 11 is provided in a donut shape outside the small diameter portion 301 of the main flow path 30, the sectional area of the suction portion 11 can be increased as shown in FIG.
【００４７】それ故，上記吸着触媒モジュール１０の直
径を大きくすることなく，排ガス８が通過する上記吸着
部１１及び触媒部１２の断面積を大きくすることができ
る。これにより，上記吸着部１１の吸着機能及び触媒部
１２の触媒機能が充分に発揮される。従って，本例によ
れば，一層排ガスの浄化効率が高い自動車用排ガス浄化
装置を得ることができる。その他，実施形態例１と同様
の作用効果を有する。Therefore, the cross-sectional area of the adsorption section 11 and the catalyst section 12 through which the exhaust gas 8 passes can be increased without increasing the diameter of the adsorption catalyst module 10. Thereby, the adsorption function of the adsorption section 11 and the catalytic function of the catalyst section 12 are sufficiently exhibited. Therefore, according to this embodiment, it is possible to obtain an exhaust gas purifying apparatus for an automobile having higher exhaust gas purifying efficiency. In addition, the third embodiment has the same functions and effects as the first embodiment.
【００４８】実施形態例３ 本例は，図９に示すごとく，上記開口部３１を，上記吸
着部１１の後端部１１９と上記触媒部１２の前端部１２
１との間における上記管状隔壁３に設けた，吸着触媒モ
ジュール１０を有する自動車排ガス浄化装置の例であ
る。そして，上記メイン流路３０の小径部３０１の管状
隔壁３の外側に，上記吸着部１１の内側側面１１４の全
面を，支持部材４０を介して接合してある。即ち，上記
支持部材４０は，上記吸着部材１１の内側側面１１４の
略全面に接合してある（図９）。その他は，実施形態例
２と同様である。Embodiment 3 In the present embodiment, as shown in FIG. 9, the opening 31 is formed by the rear end 119 of the adsorbing section 11 and the front end 12 of the catalyst section 12.
1 is an example of an automobile exhaust gas purifying apparatus having an adsorption catalyst module 10 provided in the tubular partition wall 3 between the exhaust gas purifying apparatus 1 and the first embodiment. The entire surface of the inner side surface 114 of the suction portion 11 is joined to the outside of the tubular partition wall 3 of the small diameter portion 301 of the main flow passage 30 via a support member 40. That is, the support member 40 is joined to substantially the entire inner side surface 114 of the suction member 11 (FIG. 9). Others are the same as the second embodiment.
【００４９】上記吸着部１１は，その内側側面１１４の
全面を管状隔壁３の外側に，支持部材４０を介して接合
してある。そのため，上記吸着部１１と管状隔壁３との
接合を一層容易かつ確実に行なうことができる。また，
上記吸着部１１の後端部１１９と上記触媒部１２の前端
部１２１との間に，上記開口部３１が設けられているた
め，上記吸着部１１を通過した排ガスが，折り返すこと
なく，そのまま上記触媒部１２へ流入する。そのため，
排ガス８の流れが一層円滑となる。その他，実施形態例
２と同様の作用効果を有する。The suction portion 11 has its entire inner side surface 114 joined to the outside of the tubular partition wall 3 via a support member 40. Therefore, the joining of the suction part 11 and the tubular partition 3 can be performed more easily and reliably. Also,
Since the opening 31 is provided between the rear end 119 of the adsorbing section 11 and the front end 121 of the catalyst section 12, the exhaust gas passing through the adsorbing section 11 does not turn over, It flows into the catalyst unit 12. for that reason,
The flow of the exhaust gas 8 becomes smoother. In addition, the third embodiment has the same functions and effects as those of the second embodiment.
【００５０】なお，図７〜図９においては，上記実施形
態例２又は実施形態例３において言及しなかった部分に
ついては，実施形態例１と同様の符号を用いた。7 to 9, the same reference numerals as those in the first embodiment are used for parts not mentioned in the second embodiment or the third embodiment.
【図１】実施形態例１における，自動車用排ガス浄化装
置の吸着触媒モジュールの断面説明図。FIG. 1 is an explanatory cross-sectional view of an adsorption catalyst module of an automobile exhaust gas purification device according to a first embodiment.
【図２】実施形態例１における，自動車用排ガス浄化装
置の説明図。FIG. 2 is an explanatory diagram of an exhaust gas purifying apparatus for a vehicle according to the first embodiment.
【図３】実施形態例１における，切替手段の断面説明
図。FIG. 3 is an explanatory sectional view of a switching unit according to the first embodiment;
【図４】図１のＡ−Ａ線矢視断面図。FIG. 4 is a sectional view taken along line AA of FIG. 1;
【図５】実施形態例１おける，（Ａ）支持部材の配設方
法，及び（Ｂ）支持部材の他の配設方法の説明図。FIG. 5 is an explanatory view of (A) an arrangement method of a support member and (B) another arrangement method of the support member in the first embodiment.
【図６】実施形態例１における，切替制御装置による切
替手段の制御方法を示すフローチャート。FIG. 6 is a flowchart illustrating a control method of a switching unit by the switching control device according to the first embodiment.
【図７】実施形態例２における，自動車用排ガス浄化装
置の吸着触媒モジュールの断面説明図。FIG. 7 is an explanatory sectional view of an adsorption catalyst module of an exhaust gas purifying apparatus for a vehicle according to a second embodiment.
【図８】図７のＢ−Ｂ線矢視断面図。FIG. 8 is a sectional view taken along line BB of FIG. 7;
【図９】実施形態例３における，自動車用排ガス浄化装
置の吸着触媒モジュールの断面説明図。FIG. 9 is an explanatory sectional view of an adsorption catalyst module of an automotive exhaust gas purifying apparatus according to a third embodiment.
１．．．自動車用排ガス浄化装置， １０．．．吸着触媒モジュール， １１．．．吸着部， １２．．．触媒部， １３．．．管状空洞部， ２．．．ハウジング， ３．．．管状隔壁， ３０．．．メイン流路， ３１．．．開口部， ４，４０．．．支持部材， ５．．．切替手段， ８．．．排ガス， 1. . . 9. Exhaust gas purification equipment for automobiles, . . 10. adsorption catalyst module, . . Adsorption section, 12. . . Catalyst part, 13. . . 1. a tubular cavity, . . Housing, 3. . . Tubular partition, 30. . . Main flow path, 31. . . Opening, 4,40. . . 4. support member; . . Switching means, 8. . . Exhaust gas,
フロントページの続き (72)発明者 斉藤 誠 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 (72)発明者 矢羽田 茂人 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 (72)発明者 中村 兼仁 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 (72)発明者 桜井 計宏 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 (72)発明者 伊藤 隆晟 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 Ｆターム(参考） 3G091 AA02 AB01 AB08 AB09 AB10 BA03 BA14 BA15 BA19 BA32 BA39 CA12 CA13 DA01 DA02 DA03 DB10 EA16 EA30 FA02 FA04 FA12 FA13 FB02 FC04 FC07 GA02 GA06 GA24 GB01X GB01Z GB10X GB17X HA08 HA19 HA20 HA27 HA28 HA29 HA46 HA47 HB02 HB03 Continuing from the front page (72) Inventor Makoto Saito 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Corporation (72) Inventor Shigeto Yabata 1-1-1, Showa-cho, Kariya City, Aichi Prefecture Inside Denso Corporation ( 72) Inventor Kanehito Nakamura 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Co., Ltd. (72) Inventor Sakurai No. 1 Toyota-cho, Toyota-shi, Aichi Prefecture Toyota Motor Corporation (72) Inventor Ito Takasune 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F-term (reference) 3G091 AA02 AB01 AB08 AB09 AB10 BA03 BA14 BA15 BA19 BA32 BA39 CA12 CA13 DA01 DA02 DA03 DB10 EA16 EA30 FA02 FA04 FA12 FA13 FB02 FC04 FC07 GA02 GA06 GA24 GB01X GB01Z GB10X GB17X HA08 HA19 HA20 HA27 HA28 HA29 HA46 HA47 HB02 HB03
Claims (7)
着触媒モジュールを有する自動車用排ガス浄化装置であ
って，上記吸着触媒モジュールは，ハウジング内に装着
され，吸着材を担持したドーナツ状のハニカム構造体か
らなる吸着部と，該吸着部の内側に管状隔壁を介して設
けたメイン流路と，該メイン流路に配設され，触媒を担
持したハニカム構造体からなる触媒部とからなり，か
つ，上記管状隔壁には，上記触媒部の上流側において，
上記吸着部と上記触媒部とを連通する開口部が設けら
れ，また，上記管状隔壁における上記開口部の上流側に
は上記排ガスの上記触媒部への導入を制御するための切
替手段が配設され，上記吸着部が排ガス中の有害成分を
吸着する吸着時には，上記排ガスが上記開口部を通じて
上記吸着部から上記触媒部へ流入するよう構成してある
ことを特徴とする自動車用排ガス浄化装置。1. An exhaust gas purifying apparatus for an automobile having an adsorption catalyst module disposed in the middle of an exhaust pipe of an engine, wherein the adsorption catalyst module is mounted in a housing and has a donut shape carrying an adsorbent. An adsorbing section comprising a honeycomb structure, a main flow path provided inside the adsorbing section via a tubular partition, and a catalyst section provided in the main flow path and comprising a honeycomb structure carrying a catalyst. And the tubular partition has an upstream side of the catalyst section,
An opening communicating the adsorption section and the catalyst section is provided, and a switching means for controlling the introduction of the exhaust gas into the catalyst section is provided upstream of the opening in the tubular partition. An exhaust gas purifying apparatus for an automobile, wherein the exhaust gas flows from the adsorption unit to the catalyst unit through the opening when the adsorption unit adsorbs harmful components in the exhaust gas.
状隔壁との間には，両者の間に介設した支持部材により
形成された管状空洞部が設けられており，上記排ガス
は，上記吸着部，管状空洞部を経由して上記メイン流路
に流入するよう構成してあることを特徴とする自動車用
排ガス浄化装置。2. The apparatus according to claim 1, wherein a tubular cavity formed by a support member interposed between the adsorbing section and the tubular partition is provided between the adsorbing section and the tubular partition wall. An exhaust gas purifying apparatus for an automobile, wherein the exhaust gas purifying apparatus is configured to flow into the main flow path via an adsorption section and a tubular hollow section.
は，上記吸着部の後端部よりも下流側に設けられている
ことを特徴とする自動車用排ガス浄化装置。3. The exhaust gas purifying apparatus for an automobile according to claim 1, wherein the catalyst section is provided downstream of a rear end of the adsorption section.
吸着部の後端部と上記触媒部の前端部との間における上
記管状隔壁に設けられていることを特徴とする自動車用
排ガス浄化装置。4. The exhaust gas purifying apparatus for an automobile according to claim 3, wherein the opening is provided in the tubular partition wall between a rear end of the adsorption section and a front end of the catalyst section. apparatus.
上記切替手段は，上記吸着時には上記排ガスを上記吸着
部に導入するよう切替え，非吸着時には主に触媒部へ導
入するよう切替えるアクチュエータを有していることを
特徴とする自動車用排ガス浄化装置。5. The method according to claim 1, wherein:
An exhaust gas purifying apparatus for an automobile, wherein the switching means has an actuator for switching so as to introduce the exhaust gas into the adsorbing section during the adsorption, and switching mainly to introduce the exhaust gas into the catalyst section during non-adsorbing.
上記支持部材は吸着材を担持していることを特徴とする
自動車用排ガス浄化装置。6. The method according to claim 1, wherein:
An exhaust gas purifying apparatus for an automobile, wherein the support member carries an adsorbent.
上記支持部材は，所定の間隔をもって複数本配設してあ
り，該複数本の支持部材と上記吸着部と上記管状隔壁と
により形成される空間には，吸着材を充填してあること
を特徴とする自動車用排ガス浄化装置。7. The method according to claim 1, wherein:
A plurality of the support members are provided at a predetermined interval, and a space formed by the plurality of support members, the suction section, and the tubular partition is filled with an adsorbent. Exhaust gas purification equipment for automobiles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14630999A JP3667559B2 (en) | 1999-05-26 | 1999-05-26 | Exhaust gas purification equipment for automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14630999A JP3667559B2 (en) | 1999-05-26 | 1999-05-26 | Exhaust gas purification equipment for automobiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000337135A true JP2000337135A (en) | 2000-12-05 |
| JP3667559B2 JP3667559B2 (en) | 2005-07-06 |
Family
ID=15404771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14630999A Expired - Lifetime JP3667559B2 (en) | 1999-05-26 | 1999-05-26 | Exhaust gas purification equipment for automobiles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3667559B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006194231A (en) * | 2004-12-15 | 2006-07-27 | Toyota Motor Corp | Engine exhaust emission control device and its manufacturing method |
| CN102278175A (en) * | 2010-06-02 | 2011-12-14 | 通用汽车环球科技运作有限责任公司 | Engine exhaust gas treatment device including electrically actuated hydrocarbon adsorber bypass valve |
| WO2012156012A1 (en) * | 2011-05-19 | 2012-11-22 | Volkswagen Aktiengesellschaft | Exhaust gas system with hc adsorber and parallel catalytic converter, and vehicle comprising such an exhaust gas system |
| WO2013060414A1 (en) * | 2011-10-27 | 2013-05-02 | Volkswagen Aktiengesellschaft | Exhaust purification device |
| JP2014129823A (en) * | 2014-04-10 | 2014-07-10 | Yanmar Co Ltd | Exhaust gas purifying device |
| US9188036B2 (en) | 2010-12-24 | 2015-11-17 | Volkswagen Aktiengesellschaft | Exhaust system with HC adsorber and parallel exhaust-gas catalytic converter, and vehicle having an exhaust system of said type |
| CN112752897A (en) * | 2018-10-09 | 2021-05-04 | 沃尔沃卡车集团 | Exhaust gas aftertreatment unit for an exhaust gas system of an internal combustion engine |
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1999
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006194231A (en) * | 2004-12-15 | 2006-07-27 | Toyota Motor Corp | Engine exhaust emission control device and its manufacturing method |
| JP4534860B2 (en) * | 2004-12-15 | 2010-09-01 | トヨタ自動車株式会社 | Engine exhaust purification device and method of manufacturing the same |
| CN102278175A (en) * | 2010-06-02 | 2011-12-14 | 通用汽车环球科技运作有限责任公司 | Engine exhaust gas treatment device including electrically actuated hydrocarbon adsorber bypass valve |
| US9188036B2 (en) | 2010-12-24 | 2015-11-17 | Volkswagen Aktiengesellschaft | Exhaust system with HC adsorber and parallel exhaust-gas catalytic converter, and vehicle having an exhaust system of said type |
| US9062580B2 (en) | 2011-05-19 | 2015-06-23 | Volkswagen Aktiengesellschaft | Exhaust gas system with HC adsorber and parallel catalytic converter, and vehicle comprising such an exhaust gas system |
| WO2012156012A1 (en) * | 2011-05-19 | 2012-11-22 | Volkswagen Aktiengesellschaft | Exhaust gas system with hc adsorber and parallel catalytic converter, and vehicle comprising such an exhaust gas system |
| WO2013060414A1 (en) * | 2011-10-27 | 2013-05-02 | Volkswagen Aktiengesellschaft | Exhaust purification device |
| US9267416B2 (en) | 2011-10-27 | 2016-02-23 | Volkswagen Aktiengesellschaft | Exhaust purification device |
| DE102011117090B4 (en) | 2011-10-27 | 2023-01-26 | Volkswagen Aktiengesellschaft | emission control device |
| JP2014129823A (en) * | 2014-04-10 | 2014-07-10 | Yanmar Co Ltd | Exhaust gas purifying device |
| CN112752897A (en) * | 2018-10-09 | 2021-05-04 | 沃尔沃卡车集团 | Exhaust gas aftertreatment unit for an exhaust gas system of an internal combustion engine |
| CN112752896A (en) * | 2018-10-09 | 2021-05-04 | 沃尔沃卡车集团 | Exhaust gas aftertreatment device for an exhaust gas system of an internal combustion engine |
| US11555435B2 (en) | 2018-10-09 | 2023-01-17 | Volvo Truck Corporation | Exhaust aftertreatment unit for an exhaust system of an internal combustion engine |
| CN112752896B (en) * | 2018-10-09 | 2024-02-06 | 沃尔沃卡车集团 | Exhaust gas aftertreatment device for an exhaust system of an internal combustion engine |
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