JPH0239517U - - Google Patents
Info
- Publication number
- JPH0239517U JPH0239517U JP11877788U JP11877788U JPH0239517U JP H0239517 U JPH0239517 U JP H0239517U JP 11877788 U JP11877788 U JP 11877788U JP 11877788 U JP11877788 U JP 11877788U JP H0239517 U JPH0239517 U JP H0239517U
- Authority
- JP
- Japan
- Prior art keywords
- engine
- detection means
- trap
- valve
- catalyst
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Description
第１図はこの考案の構成を示すクレーム対応図
、第２図はこの考案に係る排気浄化装置の一実施
例を示す構成説明図、第３図および第４図は上記
実施例における制御プログラムを示すフローチヤ
ート、第５図はこの実施例の非目詰まり時におけ
る制御特性図、第６図は同じく目詰まり時におけ
る制御特性図、第７図は従来における排気浄化装
置の一例を示す構成説明図である。
１……内燃機関、２……排気通路、３……開閉
弁、４……排気バイパス通路、５……触媒付トラ
ツプ、６……機関温度検出手段、７……負荷検出
手段、８……回転速度検出手段、９……目詰まり
検出手段、１０……開閉弁制御手段。
Fig. 1 is a claim correspondence diagram showing the configuration of this invention, Fig. 2 is a configuration explanatory diagram showing an embodiment of the exhaust gas purification device according to this invention, and Figs. 3 and 4 show the control program in the above embodiment. FIG. 5 is a control characteristic diagram of this embodiment in the case of no clogging, FIG. 6 is a control characteristic diagram of the same in the case of clogging, and FIG. 7 is a configuration explanatory diagram showing an example of a conventional exhaust purification device. It is. DESCRIPTION OF SYMBOLS 1... Internal combustion engine, 2... Exhaust passage, 3... Open/close valve, 4... Exhaust bypass passage, 5... Trap with catalyst, 6... Engine temperature detection means, 7... Load detection means, 8... Rotation speed detection means, 9...Clogging detection means, 10... Opening/closing valve control means.
Claims (1)
の開閉弁をバイパスして形成された排気バイパス
通路と、この排気バイパス通路に介装された触媒
付トラツプと、機関の温度を検出する機関温度検
出手段と、機関の負荷を検出する負荷検出手段と
、機関の回転速度を検出する回転速度検出手段と
、上記触媒付トラツプの目詰まりをその圧力損失
から検出する目詰まり検出手段と、これらの検出
手段の検出信号に基づき、触媒付トラツプの非目
詰まり時には運転条件に応じて上記開閉弁を開閉
制御するとともに、目詰まり時にはエンジンブレ
ーキ状態時にのみ上記開閉弁を閉作動させる開閉
弁制御手段とを備えてなる内燃機関の排気浄化装
置。 An on-off valve installed in the exhaust passage of an internal combustion engine, an exhaust bypass passage formed by bypassing this on-off valve, a trap with a catalyst installed in this exhaust bypass passage, and an engine that detects the temperature of the engine. temperature detection means, load detection means for detecting the load of the engine, rotational speed detection means for detecting the rotational speed of the engine, clogging detection means for detecting clogging of the trap with catalyst from its pressure loss; On-off valve control means controls the opening and closing of the on-off valve according to operating conditions when the trap with catalyst is not clogged, based on the detection signal of the detection means, and closes the on-off valve only in the engine braking state when the trap is clogged. An exhaust purification device for an internal combustion engine, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11877788U JPH0610118Y2 (en) | 1988-09-09 | 1988-09-09 | Exhaust gas purification device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11877788U JPH0610118Y2 (en) | 1988-09-09 | 1988-09-09 | Exhaust gas purification device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0239517U true JPH0239517U (en) | 1990-03-16 |
| JPH0610118Y2 JPH0610118Y2 (en) | 1994-03-16 |
Family
ID=31363420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11877788U Expired - Lifetime JPH0610118Y2 (en) | 1988-09-09 | 1988-09-09 | Exhaust gas purification device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610118Y2 (en) |
-
1988
- 1988-09-09 JP JP11877788U patent/JPH0610118Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610118Y2 (en) | 1994-03-16 |
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