JPH0325858U - - Google Patents
Info
- Publication number
- JPH0325858U JPH0325858U JP8528389U JP8528389U JPH0325858U JP H0325858 U JPH0325858 U JP H0325858U JP 8528389 U JP8528389 U JP 8528389U JP 8528389 U JP8528389 U JP 8528389U JP H0325858 U JPH0325858 U JP H0325858U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- injection
- fuel injection
- plunger chamber
- chamber
- 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
- 239000000446 fuel Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案実施例による燃料噴射装置の全
体構成を示す断面図、第２図は第１図に示した燃
料噴射装置における制御部の一作用を説明するた
めの線図、第３図は第１図に示した燃料噴射装置
の動作の基準となるマツプを示す線図、第４図は
第３図に示したマツプによる燃料噴射状態を説明
するための線図、第５図は第３図に示したマツプ
の条件の他の条件を説明するための線図、第６図
は従来の燃料噴射装置の要部構造を示す第１図相
当の断面図である。
２０…燃焼室、２４…燃料噴射ノズル、２５…
高圧送油路、２６…プランジヤ室、２７…プラン
ジヤ、３２…燃料供給路、３９…ニードル弁、４
２…燃料噴射用電磁弁、４３…低圧油路、５０…
コントローラ。
FIG. 1 is a cross-sectional view showing the overall configuration of a fuel injection device according to an embodiment of the present invention, FIG. 2 is a diagram for explaining an operation of the control section in the fuel injection device shown in FIG. 1, and FIG. 1 is a diagram showing a map serving as a reference for the operation of the fuel injection device shown in FIG. 1, FIG. 4 is a diagram showing a fuel injection state based on the map shown in FIG. FIG. 6 is a diagram for explaining conditions other than the conditions of the map shown in FIG. 3, and FIG. 6 is a sectional view corresponding to FIG. 1 showing the main structure of a conventional fuel injection device. 20... Combustion chamber, 24... Fuel injection nozzle, 25...
High pressure oil supply path, 26... Plunger chamber, 27... Plunger, 32... Fuel supply path, 39... Needle valve, 4
2...Fuel injection solenoid valve, 43...Low pressure oil path, 50...
controller.
Claims (1)
ら燃料を供給されるプランジヤ室と、上記内燃機
関の出力軸からの駆動力を受けて上記プランジヤ
室の燃料を加圧作動するプランジヤと、上記プラ
ンンジヤ室からの高圧燃料を高圧送油路を介して
供給されると共に、ニードル弁の開時に上記高圧
燃料を上記内燃機関の燃焼室内に噴射する噴射ノ
ズルと、上記プランジヤ室内とこのプランジヤ室
からのリターン油をスピルさせる低圧油路との間
に位置して低圧油路の開閉操作を行うことで噴射
時期および噴射量を調整する燃料噴射用電磁弁と
を一体構造内に配置した燃料噴射装置であつて、 上記燃料噴射用電磁弁には、機関回転情報およ
び機関負荷情報を入力される制御部が接続され、
この制御部は、上記各情報において、低負荷時に
は、外各情報に基づく主噴射の前に少量の燃料噴
射を行い、かつ、高負荷時には、上記主噴射の後
に少量の燃料噴射を行わせるように上記燃料噴射
用電磁弁の動作を制御することを特徴とする燃料
噴射装置。[Scope of Claim for Utility Model Registration] A plunger chamber supported by the engine body of an internal combustion engine and supplied with fuel from a fuel supply system, and a plunger chamber that receives driving force from the output shaft of the internal combustion engine to apply fuel in the plunger chamber. a plunger that operates under pressure; an injection nozzle that is supplied with high-pressure fuel from the plunger chamber via a high-pressure oil passage and injects the high-pressure fuel into a combustion chamber of the internal combustion engine when the needle valve is opened; The fuel injection solenoid valve is located between the chamber and the low-pressure oil passage that spills the return oil from the plunger chamber, and adjusts the injection timing and injection amount by opening and closing the low-pressure oil passage. The fuel injection device is arranged in a fuel injection device, and the fuel injection solenoid valve is connected to a control unit into which engine rotation information and engine load information are input,
This control section is configured to inject a small amount of fuel before the main injection based on the above information when the load is low, and to inject a small amount of fuel after the main injection when the load is high. A fuel injection device characterized in that the operation of the fuel injection solenoid valve is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8528389U JPH0325858U (en) | 1989-07-20 | 1989-07-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8528389U JPH0325858U (en) | 1989-07-20 | 1989-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0325858U true JPH0325858U (en) | 1991-03-18 |
Family
ID=31634332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8528389U Pending JPH0325858U (en) | 1989-07-20 | 1989-07-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325858U (en) |
-
1989
- 1989-07-20 JP JP8528389U patent/JPH0325858U/ja active Pending
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