JPH0349312U - - Google Patents
Info
- Publication number
- JPH0349312U JPH0349312U JP10997489U JP10997489U JPH0349312U JP H0349312 U JPH0349312 U JP H0349312U JP 10997489 U JP10997489 U JP 10997489U JP 10997489 U JP10997489 U JP 10997489U JP H0349312 U JPH0349312 U JP H0349312U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- catalyst
- engine
- main
- exhaust
- 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
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims 4
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Description
第１図ないし第３図は本考案の実施例に係り、
第１図はエンジンの排気管装置を開閉弁が閉弁し
ている状態として示す概略系統図、第２図はエン
ジンの排気管装置を開閉弁が開弁している状態と
して示す第１図と同様の概略系統図、第３図は開
閉弁の制御処理を示す流れ線図、第４図および第
５図は従来技術に係り、第４図はエンジンの排気
管装置を示す断面図、第５図はエンジンの回転数
と触媒の温度との関係を示す特性線図である。
２１……断熱エンジン、２２……排気管、２３
……触媒、２４……主排気管、２５……バイパス
排気管。
Figures 1 to 3 relate to embodiments of the present invention,
Fig. 1 is a schematic system diagram showing the engine exhaust pipe device with the on-off valve closed, and Fig. 2 is a schematic system diagram showing the engine exhaust pipe device with the on-off valve open. A similar schematic system diagram, FIG. 3 is a flow diagram showing the control process of the on-off valve, FIGS. 4 and 5 relate to the prior art, FIG. 4 is a sectional view showing the engine exhaust pipe device, The figure is a characteristic diagram showing the relationship between engine speed and catalyst temperature. 21...Insulated engine, 22...Exhaust pipe, 23
...Catalyst, 24...Main exhaust pipe, 25...Bypass exhaust pipe.
Claims (1)
の燃焼室からの排気ガスを排出する排気管と、該
排気管の途中に設けられ、排気ガスの清浄化を図
る触媒とからなり、前記排気管を、該触媒の温度
が低いときにすべての排気ガスをその放熱を抑え
て当該触媒まで流す主排気管と、該主排気管と並
列に設けられ、前記触媒の温度が高いときに当該
主排気管とともにまたは当該主排気管に代えて排
気ガスを流し、放熱を促進して触媒の温度上昇を
抑えるバイパス排気管とから構成してなるエンジ
ンの排気管装置。 It consists of an exhaust pipe that is connected to the exhaust port of the engine and discharges exhaust gas from the combustion chamber of the engine, and a catalyst that is provided in the middle of the exhaust pipe to purify the exhaust gas. A main exhaust pipe that allows all exhaust gases to flow to the catalyst while suppressing heat radiation when the temperature of the catalyst is low, and a main exhaust pipe that is provided in parallel with the main exhaust pipe and works with the main exhaust pipe when the temperature of the catalyst is high. Alternatively, an engine exhaust pipe device comprising a bypass exhaust pipe that allows exhaust gas to flow in place of the main exhaust pipe, promotes heat dissipation, and suppresses the temperature rise of the catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10997489U JPH0349312U (en) | 1989-09-20 | 1989-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10997489U JPH0349312U (en) | 1989-09-20 | 1989-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0349312U true JPH0349312U (en) | 1991-05-14 |
Family
ID=31658532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10997489U Pending JPH0349312U (en) | 1989-09-20 | 1989-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0349312U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54145813A (en) * | 1978-05-04 | 1979-11-14 | Toyota Motor Corp | Control device of exhaust flow in internal combustion engine |
| JPS6218319B2 (en) * | 1982-05-12 | 1987-04-22 | Matsushita Electric Ind Co Ltd |
-
1989
- 1989-09-20 JP JP10997489U patent/JPH0349312U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54145813A (en) * | 1978-05-04 | 1979-11-14 | Toyota Motor Corp | Control device of exhaust flow in internal combustion engine |
| JPS6218319B2 (en) * | 1982-05-12 | 1987-04-22 | Matsushita Electric Ind Co Ltd |
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