JPS6228014U - - Google Patents
Info
- Publication number
- JPS6228014U JPS6228014U JP11811785U JP11811785U JPS6228014U JP S6228014 U JPS6228014 U JP S6228014U JP 11811785 U JP11811785 U JP 11811785U JP 11811785 U JP11811785 U JP 11811785U JP S6228014 U JPS6228014 U JP S6228014U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- secondary air
- air supply
- oxidation catalyst
- combustion engine
- 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
- 239000003054 catalyst Substances 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Supercharger (AREA)
- Exhaust Gas After Treatment (AREA)
Description
第１図は本考案の実施例の概略図であり、第２
図は本考案の実施例による負荷と二次空気量の関
係を示す図である。
１……内燃機関本体、２……吸気通路、３……
排気通路、５……スロツトルバルブ、６……機械
式過給機、１３……三元触媒、１４……酸化触媒
、２０……電子式制御装置（ＥＣＰ）、２１……
バイパス通路、２２……過給圧制御弁、３０……
二次空気供給通路、３１……二次空気制御弁、３
３……負圧制御弁、３７……逆止弁（リードバル
ブ）、３９……エアーフイルタ。
FIG. 1 is a schematic diagram of an embodiment of the present invention, and FIG.
The figure is a diagram showing the relationship between load and secondary air amount according to an embodiment of the present invention. 1... Internal combustion engine body, 2... Intake passage, 3...
Exhaust passage, 5... Throttle valve, 6... Mechanical supercharger, 13... Three-way catalyst, 14... Oxidation catalyst, 20... Electronic control unit (ECP), 21...
Bypass passage, 22...Supercharging pressure control valve, 30...
Secondary air supply passage, 31...Secondary air control valve, 3
3... Negative pressure control valve, 37... Check valve (reed valve), 39... Air filter.
Claims (1)
酸化触媒を備えた内燃機関において、前記過給機
の下流の吸気通路から前記酸化触媒の前部の排気
通路へ二次空気を供給する二次空気供給通路を設
け、該二次空気供給通路に内燃機関の一部の運転
条件で閉成する制御弁を設けると共に、前記酸化
触媒の前部の排気通路を該排気通路側へのみ空気
を導入する逆止弁を介して大気に連通させたこと
を特徴とする機械式過給機付内燃機関の二次空気
供給装置。 ２ 前記二次空気供給通路の制御弁の下流より、
大気へ開放する通路を分岐させ、該大気開放通路
に前記逆止弁としてのリードバルブを設けた実用
新案登録請求の範囲第１項記載の装置。 ３ スロツトルバルブ下流の吸気通路に機械式過
給機を設けた実用新案登録請求の範囲第１項記載
の装置。 ４ 酸化触媒の上流の排気通路に三元触媒を設け
、二次空気を該三元触媒と前記酸化触媒との間に
供給するようにした実用新案登録請求の範囲第１
項〜第３項のいずれか１項記載の装置。[Claims for Utility Model Registration] 1. In an internal combustion engine equipped with a mechanical supercharger in the intake passage and an oxidation catalyst in the exhaust passage, the exhaust gas in front of the oxidation catalyst is discharged from the intake passage downstream of the supercharger. A secondary air supply passage is provided for supplying secondary air to the passage, and the secondary air supply passage is provided with a control valve that closes under certain operating conditions of the internal combustion engine, and an exhaust passage in front of the oxidation catalyst is provided. A secondary air supply device for an internal combustion engine with a mechanical supercharger, characterized in that the secondary air supply device is connected to the atmosphere through a check valve that introduces air only to the exhaust passage side. 2 From downstream of the control valve of the secondary air supply passage,
2. The device according to claim 1, which is a registered utility model, wherein a passage opening to the atmosphere is branched, and the passage opening to the atmosphere is provided with a reed valve as the check valve. 3. The device according to claim 1, which is a registered utility model, in which a mechanical supercharger is provided in the intake passage downstream of the throttle valve. 4 Utility model registration claim 1, in which a three-way catalyst is provided in the exhaust passage upstream of the oxidation catalyst, and secondary air is supplied between the three-way catalyst and the oxidation catalyst.
The device according to any one of Items 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985118117U JPH0422025Y2 (en) | 1985-08-02 | 1985-08-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985118117U JPH0422025Y2 (en) | 1985-08-02 | 1985-08-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6228014U true JPS6228014U (en) | 1987-02-20 |
| JPH0422025Y2 JPH0422025Y2 (en) | 1992-05-20 |
Family
ID=31004265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985118117U Expired JPH0422025Y2 (en) | 1985-08-02 | 1985-08-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422025Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5218314U (en) * | 1975-07-25 | 1977-02-09 | ||
| JPS5833374A (en) * | 1981-08-21 | 1983-02-26 | Mitsubishi Electric Corp | Eliminating circuit for fixed pattern noise of solid state image pickup device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7232785U (en) * | 1972-09-05 | 1974-06-20 | Arbter C | Multiple folding device |
-
1985
- 1985-08-02 JP JP1985118117U patent/JPH0422025Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5218314U (en) * | 1975-07-25 | 1977-02-09 | ||
| JPS5833374A (en) * | 1981-08-21 | 1983-02-26 | Mitsubishi Electric Corp | Eliminating circuit for fixed pattern noise of solid state image pickup device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0422025Y2 (en) | 1992-05-20 |