JPH0437851U - - Google Patents
Info
- Publication number
- JPH0437851U JPH0437851U JP7976990U JP7976990U JPH0437851U JP H0437851 U JPH0437851 U JP H0437851U JP 7976990 U JP7976990 U JP 7976990U JP 7976990 U JP7976990 U JP 7976990U JP H0437851 U JPH0437851 U JP H0437851U
- Authority
- JP
- Japan
- Prior art keywords
- cylinders
- compression ratio
- cylinder operation
- combustion engine
- internal combustion
- 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
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- 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図と第２図は本考案を適用する２サイクル
エンジンの実施例を示す略示図、第３図は部分気
筒運転を行なう負荷領域を示す図、第４図、第５
図はバルブタイミングと圧縮比との関係を説明す
る図、第６図から第８図は可変バルブタイミング
装置の構造図、第９図は第１図の実施例のエンジ
ンのカムシヤフト配置図、第１０図はバルブタイ
ミング制御動作を示すフローチヤートである。
１０……エンジン、１２……吸気管、２２，２
４……排気管、２６……遮断弁、３０……ＥＣＵ
、３２……エアフローメータ、３６……燃料噴射
弁、３８……点火回路、３９……エンジン回転数
センサ、４０……可変バルブタイミング装置、５
１ａ，５１ｂ……給気弁カムシヤフト、５２……
排気弁カムシヤフト。
1 and 2 are schematic diagrams showing an embodiment of a two-stroke engine to which the present invention is applied, FIG. 3 is a diagram showing a load range in which partial cylinder operation is performed, and FIGS.
The figure is a diagram explaining the relationship between valve timing and compression ratio, Figures 6 to 8 are structural diagrams of the variable valve timing device, Figure 9 is a camshaft layout diagram of the engine of the embodiment shown in Figure 1, and Figure 10 is a diagram illustrating the relationship between valve timing and compression ratio. The figure is a flowchart showing valve timing control operation. 10...Engine, 12...Intake pipe, 22,2
4...Exhaust pipe, 26...Shutoff valve, 30...ECU
, 32... Air flow meter, 36... Fuel injection valve, 38... Ignition circuit, 39... Engine rotation speed sensor, 40... Variable valve timing device, 5
1a, 51b...Air supply valve camshaft, 52...
Exhaust valve camshaft.
Claims (1)
筒運転を行なう２サイクル内燃機関において、常
時稼動させる気筒の圧縮比を部分気筒運転時に休
止させる気筒の圧縮比より高く設定すると共に、
所定の負荷条件において前記常時稼動させる気筒
の発生トルクを低下させる手段を設けたことを特
徴とする可変気筒数２サイクル内燃機関。 In a two-stroke internal combustion engine that performs partial cylinder operation by suspending combustion in some cylinders during light loads, the compression ratio of cylinders that are constantly operated is set higher than the compression ratio of cylinders that are deactivated during partial cylinder operation,
A two-stroke internal combustion engine with a variable number of cylinders, comprising means for reducing the torque generated by the cylinders that are constantly operated under predetermined load conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7976990U JPH0437851U (en) | 1990-07-30 | 1990-07-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7976990U JPH0437851U (en) | 1990-07-30 | 1990-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0437851U true JPH0437851U (en) | 1992-03-31 |
Family
ID=31624230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7976990U Pending JPH0437851U (en) | 1990-07-30 | 1990-07-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183462A (en) * | 2004-12-24 | 2006-07-13 | Nissan Motor Co Ltd | Brayton cycle engine |
| JP2006183460A (en) * | 2004-12-24 | 2006-07-13 | Nissan Motor Co Ltd | Brayton cycle engine |
-
1990
- 1990-07-30 JP JP7976990U patent/JPH0437851U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183462A (en) * | 2004-12-24 | 2006-07-13 | Nissan Motor Co Ltd | Brayton cycle engine |
| JP2006183460A (en) * | 2004-12-24 | 2006-07-13 | Nissan Motor Co Ltd | Brayton cycle engine |
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