JPH0457614U - - Google Patents
Info
- Publication number
- JPH0457614U JPH0457614U JP10082190U JP10082190U JPH0457614U JP H0457614 U JPH0457614 U JP H0457614U JP 10082190 U JP10082190 U JP 10082190U JP 10082190 U JP10082190 U JP 10082190U JP H0457614 U JPH0457614 U JP H0457614U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- scavenging
- opens
- port
- blow
- 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
- 230000002000 scavenging effect Effects 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
第１図は本考案の一実施例を示す２サイクル直
噴エンジンの概略構成断面図、第２図はクランク
ケースの内圧変化を示す線図である。
１……エンジン本体、２……シリンダ、３……
ピストン、４……クランクケース、５……クラン
ク軸、６……コネクテイングロツド、７……バラ
ンサ、８……オイルパン、９……燃焼室、１０…
…点火プラグ、１１……インジエクタ、１２……
排気ポート、１３……排気ロータリバルブ、１４
……ベルト伝動手段、１５……排気管、１６……
排気チヤンバ、１７……マフラ、１８……掃気ポ
ート、１９……掃気管、２０……掃気チヤンバ、
２１……インタークーラ、２２……掃気ポンプ、
２３……ベルト伝動手段、２４……吸入管、２５
……エアクリーナ、２６……バイパス通路、２７
……アクセルペダル、２８……制御弁、２９……
ブローバイ通路、３０……セパレータ、３１……
ソレノイドバルブ、３２……圧力センサ、３３…
…オイルシール、３４……エアフローメータ。
FIG. 1 is a schematic sectional view of a two-stroke direct injection engine showing an embodiment of the present invention, and FIG. 2 is a diagram showing changes in internal pressure of a crankcase. 1...Engine body, 2...Cylinder, 3...
Piston, 4... Crankcase, 5... Crankshaft, 6... Connecting rod, 7... Balancer, 8... Oil pan, 9... Combustion chamber, 10...
...Spark plug, 11...Injector, 12...
Exhaust port, 13...Exhaust rotary valve, 14
...Belt transmission means, 15...Exhaust pipe, 16...
Exhaust chamber, 17... muffler, 18... scavenging port, 19... scavenging pipe, 20... scavenging chamber,
21...Intercooler, 22...Scavenging pump,
23...Belt transmission means, 24...Suction pipe, 25
...Air cleaner, 26...Bypass passage, 27
...Accelerator pedal, 28...Control valve, 29...
Blow-by passage, 30... Separator, 31...
Solenoid valve, 32...Pressure sensor, 33...
...Oil seal, 34...Air flow meter.
Claims (1)
気ポンプと、シリンダの排気ポートをクランク軸
の回転に同期して開閉する排気ロータリバルブと
、エンジンの燃焼室内に燃料を直接噴射するイン
ジエクタとを備えた筒内直噴式２サイクルエンジ
ンにおいて、 クランクケース内を掃気ポンプの上流側に連通
するブローバイ通路と、このブローバイ通路を開
閉するソレノイドバルブと、クランクケースの内
圧平均値を検出してその平均値がオイル上がりを
未然に防止できる所定値を越えると出力して上記
ソレノイドバルブを開動作させる圧力センサとを
設けてなる筒内直噴式２サイクルエンジンのブロ
ーバイガス還流装置。[Scope of claim for utility model registration] A scavenging pump that pumps intake air to the scavenging port of the cylinder, an exhaust rotary valve that opens and closes the exhaust port of the cylinder in synchronization with the rotation of the crankshaft, and a scavenging pump that pumps the intake air into the scavenging port of the cylinder, an exhaust rotary valve that opens and closes the exhaust port of the cylinder in synchronization with the rotation of the crankshaft, and a scavenging pump that pumps the intake air into the scavenging port of the cylinder. In a direct-injection two-stroke engine equipped with an injector, this system detects the blow-by passage that communicates the inside of the crankcase to the upstream side of the scavenging pump, the solenoid valve that opens and closes this blow-by passage, and the average value of the internal pressure of the crankcase. A blow-by gas recirculation device for an in-cylinder direct injection two-stroke engine, comprising: a pressure sensor which outputs an output when the average value exceeds a predetermined value capable of preventing oil from rising, and opens the solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082190U JPH0457614U (en) | 1990-09-26 | 1990-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082190U JPH0457614U (en) | 1990-09-26 | 1990-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457614U true JPH0457614U (en) | 1992-05-18 |
Family
ID=31843759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10082190U Pending JPH0457614U (en) | 1990-09-26 | 1990-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004522036A (en) * | 2001-03-13 | 2004-07-22 | ボルボ ラストバグナー アーベー | Valve device for pressure control in a combustion engine and method for such pressure control |
-
1990
- 1990-09-26 JP JP10082190U patent/JPH0457614U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004522036A (en) * | 2001-03-13 | 2004-07-22 | ボルボ ラストバグナー アーベー | Valve device for pressure control in a combustion engine and method for such pressure control |
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