JPH0434450U - - Google Patents
Info
- Publication number
- JPH0434450U JPH0434450U JP7554790U JP7554790U JPH0434450U JP H0434450 U JPH0434450 U JP H0434450U JP 7554790 U JP7554790 U JP 7554790U JP 7554790 U JP7554790 U JP 7554790U JP H0434450 U JPH0434450 U JP H0434450U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder operation
- valve
- partial cylinder
- exhaust
- intake valve
- 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
- 238000002485 combustion reaction Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案を適用する２サイクルエンジン
の略示図、第２図は第１図のエンジンのバルブタ
イミングを示す図、第３図は部分気筒運転時にＥ
ＧＲを実施する負荷領域を示す図、第４図はＥＣ
Ｕの遮断弁開閉制御動作を示すフローチヤートで
ある。
１０……エンジン、１４……吸気集合管、２０
，２１……排気管、２２……連絡管、２４……遮
断弁、２６……負圧アクチユエータ、３０……Ｅ
ＣＵ。
Fig. 1 is a schematic diagram of a two-stroke engine to which the present invention is applied, Fig. 2 is a diagram showing the valve timing of the engine in Fig. 1, and Fig. 3 is a diagram showing the valve timing of the engine in partial cylinder operation.
A diagram showing the load range in which GR is implemented, Figure 4 is EC
It is a flowchart showing the shutoff valve opening/closing control operation of U. 10...Engine, 14...Intake manifold pipe, 20
, 21...Exhaust pipe, 22...Connection pipe, 24...Shutoff valve, 26...Negative pressure actuator, 30...E
C.U.
Claims (1)
筒運転を行なう２サイクル内燃機関において、少
なくとも、部分気筒運転時に休止する気筒群のバ
ルブタイミングを、排気弁が給気弁より早く開弁
し、かつ給気弁より早く閉弁するように設定する
と共に、部分気筒運転時に稼動する気筒群に接続
した排気通路と部分気筒運転時に休止する気筒群
に接続した排気通路とを相互に連通する連絡通路
と、該連絡通路を閉塞する遮断弁とを設け、部分
気筒運転中の所定負荷条件時に前記遮断弁を開弁
して前記排気通路相互間を連通させることを特徴
とする２サイクル内燃機関の排気ガス還流装置。 In a two-stroke internal combustion engine that performs partial cylinder operation by suspending combustion in some cylinders during light loads, at least the valve timing of the cylinder group that is suspended during partial cylinder operation is such that the exhaust valve opens earlier than the intake valve. , and the intake valve is set to close earlier than the intake valve, and the exhaust passage connected to the cylinder group that operates during partial cylinder operation and the exhaust passage connected to the cylinder group that is inactive during partial cylinder operation are connected to each other. A two-stroke internal combustion engine, comprising a passage and a cutoff valve that closes the communication passage, the cutoff valve being opened during a predetermined load condition during partial cylinder operation to allow communication between the exhaust passages. Exhaust gas recirculation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7554790U JPH0434450U (en) | 1990-07-18 | 1990-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7554790U JPH0434450U (en) | 1990-07-18 | 1990-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0434450U true JPH0434450U (en) | 1992-03-23 |
Family
ID=31616216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7554790U Pending JPH0434450U (en) | 1990-07-18 | 1990-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015222073A (en) * | 2014-05-22 | 2015-12-10 | エムエーエヌ・ディーゼル・アンド・ターボ・フィリアル・アフ・エムエーエヌ・ディーゼル・アンド・ターボ・エスイー・ティスクランド | Two-stroke internal combustion engine with large low-speed turbocharger with exhaust gas recirculation system |
-
1990
- 1990-07-18 JP JP7554790U patent/JPH0434450U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015222073A (en) * | 2014-05-22 | 2015-12-10 | エムエーエヌ・ディーゼル・アンド・ターボ・フィリアル・アフ・エムエーエヌ・ディーゼル・アンド・ターボ・エスイー・ティスクランド | Two-stroke internal combustion engine with large low-speed turbocharger with exhaust gas recirculation system |
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