JPS6383457U - - Google Patents
Info
- Publication number
- JPS6383457U JPS6383457U JP17900986U JP17900986U JPS6383457U JP S6383457 U JPS6383457 U JP S6383457U JP 17900986 U JP17900986 U JP 17900986U JP 17900986 U JP17900986 U JP 17900986U JP S6383457 U JPS6383457 U JP S6383457U
- Authority
- JP
- Japan
- Prior art keywords
- engine
- pressure chamber
- injector device
- unit injector
- diesel 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004880 explosion Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の実施例を示す全体構成図、
第２図はユニツトインジエクタの構成断面図、第
３〜６図は制御回路内で実行される制御動作を説
明する流れ図、第７〜９図は各々制御回路中に設
定されるマツプ、第１０図は演算内容を説明する
タイミングチヤートである。
１……クランクシヤフト、２……カムシヤフト
、３……ユニツトインジエクタ、４〜６……ギヤ
、７，８……スプロケツト、９……タイミングチ
エーン、１１ａ，１１ｂ……プランジヤ、１５…
…圧力室、１７……ノズル、２５……電磁弁（ス
ピル弁）、４０……制御回路、４１……アクセル
センサ、４３，４４……クランク角センサ。
FIG. 1 is an overall configuration diagram showing an embodiment of this invention.
Fig. 2 is a cross-sectional view of the unit injector, Figs. 3 to 6 are flowcharts explaining control operations executed within the control circuit, Figs. 7 to 9 are maps set in the control circuit, and Figs. The figure is a timing chart explaining the contents of the calculation. 1... Crankshaft, 2... Camshaft, 3... Unit injector, 4-6... Gear, 7, 8... Sprocket, 9... Timing chain, 11a, 11b... Plunger, 15...
... Pressure chamber, 17 ... Nozzle, 25 ... Solenoid valve (spill valve), 40 ... Control circuit, 41 ... Accelerator sensor, 43, 44 ... Crank angle sensor.
Claims (1)
るプランジヤと、このプランジヤの一端に臨んで
形成される圧力室と、圧力室と連通し所定圧以上
で開閉するノズルと、圧力室に連通する燃料供給
通路を開放し、高圧燃料を逃がす常開のスピル弁
とを備えたデイーゼルエンジンのユニツトインジ
エクタ装置において、上記カムシヤフトをエンジ
ンと同周期で回転させる動力伝達機構と、圧縮行
程から爆発行程に至るピストン上死点付近でのみ
前記スピル弁をエンジンの運転状態に応じて所定
の燃料噴射期間だけ閉じる制御手段とを設けたこ
とを特徴とするデイーゼルエンジンのユニツトイ
ンジエクタ装置。 A plunger that reciprocates with the rotation of the engine's camshaft, a pressure chamber formed facing one end of the plunger, a nozzle that communicates with the pressure chamber and opens and closes at a predetermined pressure or higher, and a fuel supply passage that communicates with the pressure chamber is opened. In a diesel engine unit injector device equipped with a normally open spill valve that releases high-pressure fuel, the power transmission mechanism rotates the camshaft at the same cycle as the engine, and the piston top dead center from the compression stroke to the explosion stroke. A unit injector device for a diesel engine, characterized in that the unit injector device for a diesel engine is provided with a control means for closing the spill valve only in the vicinity for a predetermined fuel injection period depending on the operating state of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17900986U JPH0430375Y2 (en) | 1986-11-20 | 1986-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17900986U JPH0430375Y2 (en) | 1986-11-20 | 1986-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6383457U true JPS6383457U (en) | 1988-06-01 |
| JPH0430375Y2 JPH0430375Y2 (en) | 1992-07-22 |
Family
ID=31121678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17900986U Expired JPH0430375Y2 (en) | 1986-11-20 | 1986-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430375Y2 (en) |
-
1986
- 1986-11-20 JP JP17900986U patent/JPH0430375Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0430375Y2 (en) | 1992-07-22 |
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