JPH041618U - - Google Patents
Info
- Publication number
- JPH041618U JPH041618U JP3946190U JP3946190U JPH041618U JP H041618 U JPH041618 U JP H041618U JP 3946190 U JP3946190 U JP 3946190U JP 3946190 U JP3946190 U JP 3946190U JP H041618 U JPH041618 U JP H041618U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- catalyst
- group
- internal combustion
- 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.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Exhaust Gas After Treatment (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は第１の実施例の６気筒２サイクル内燃
機関を示す図、第２図は部分気筒運転領域を示す
線図、第３図は第１の実施例の開閉弁を制御する
ためのフローチヤート、第４図および第５図は第
１の実施例の動作説明図、第６図は第２の実施例
の４気筒２サイクル内燃機関を示す図、第７図は
第２の実施例の開閉弁を制御するためのフローチ
ヤート、第８図および第９図は第２の実施例の動
作説明図である。
１〜６，５１〜５４……気筒、１３，５９……
第１排気管、１４，６０……第２排気管、１５，
１６，６３……触媒、１７，１９，６２……開閉
弁、１８……接続管。
Fig. 1 is a diagram showing a 6-cylinder two-stroke internal combustion engine of the first embodiment, Fig. 2 is a diagram showing a partial cylinder operating region, and Fig. 3 is a diagram showing a partial cylinder operating region of the first embodiment. Flow chart, FIGS. 4 and 5 are operation explanatory diagrams of the first embodiment, FIG. 6 is a diagram showing a four-cylinder two-stroke internal combustion engine of the second embodiment, and FIG. 7 is a diagram of the second embodiment. Flowcharts for controlling the on-off valve of FIG. 8 and FIG. 9 are explanatory views of the operation of the second embodiment. 1-6, 51-54...Cylinder, 13,59...
First exhaust pipe, 14, 60...Second exhaust pipe, 15,
16, 63...Catalyst, 17, 19, 62...Opening/closing valve, 18...Connecting pipe.
Claims (1)
の気筒への燃料供給を禁止して部分気筒運転を実
行するようにした多気筒２サイクル内燃機関にお
いて、部分気筒運転時において休止せしめられる
休止気筒群の排気通路と部分気筒運転時において
運転せしめられる稼働気筒群の排気通路を触媒の
上流で接続せしめ、部分気筒運転時において触媒
の温度が予め定められた温度以上のときに稼働気
筒からの排気ガス流入している触媒に休止気筒か
ら排出される空気を流入せしめるようにした多気
筒２サイクル内燃機関。 In a multi-cylinder two-stroke internal combustion engine in which fuel supply to some of all cylinders is prohibited during low-load engine operation to perform partial cylinder operation, a deactivated cylinder is deactivated during partial cylinder operation. The exhaust passage of the group and the exhaust passage of the active cylinder group that is operated during partial cylinder operation are connected upstream of the catalyst, and when the temperature of the catalyst is higher than a predetermined temperature during partial cylinder operation, the exhaust gas from the active cylinder group is connected. A multi-cylinder two-stroke internal combustion engine in which air discharged from a dormant cylinder is made to flow into a catalyst into which gas is flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946190U JPH041618U (en) | 1990-04-16 | 1990-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946190U JPH041618U (en) | 1990-04-16 | 1990-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH041618U true JPH041618U (en) | 1992-01-08 |
Family
ID=31548390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3946190U Pending JPH041618U (en) | 1990-04-16 | 1990-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH041618U (en) |
-
1990
- 1990-04-16 JP JP3946190U patent/JPH041618U/ja active Pending