JPH0188037U - - Google Patents
Info
- Publication number
- JPH0188037U JPH0188037U JP18390987U JP18390987U JPH0188037U JP H0188037 U JPH0188037 U JP H0188037U JP 18390987 U JP18390987 U JP 18390987U JP 18390987 U JP18390987 U JP 18390987U JP H0188037 U JPH0188037 U JP H0188037U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- pressure
- fuel injection
- valve
- plunger
- 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 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案のクレーム対応図、第２図は本
考案の一実施例の制御内容を示す流れ図、第３図
はこの実施例の作用を説明するための波形図であ
る。第４図は従来例のポンプ断面図、第５図は燃
料噴射特性を示す説明図、第６図はフエイスカム
のカム速度特性図である。
１……ポンプハウジング、３……プランジヤポ
ンプ、５……ポンプ室、７……プランジヤ、９…
…フエイスカム、１１……ローラ、１２……プラ
ンジヤ室、１３……燃料戻し通路、１４……電磁
弁、１６……電磁弁駆動回路、１７……角度パル
ス発生センサ、１８……アクセル開度センサ、１
９……コントロールユニツト、２０……スタータ
スイツチ、３１……機関始動時検出センサ、３２
……回転センサ、３３……駆動パルス発生手段、
３４……電磁弁駆動手段。
FIG. 1 is a diagram corresponding to claims of the present invention, FIG. 2 is a flowchart showing the control contents of an embodiment of the present invention, and FIG. 3 is a waveform diagram for explaining the operation of this embodiment. FIG. 4 is a sectional view of a conventional pump, FIG. 5 is an explanatory diagram showing fuel injection characteristics, and FIG. 6 is a cam speed characteristic diagram of a face cam. 1... Pump housing, 3... Plunger pump, 5... Pump chamber, 7... Plunger, 9...
... Face cam, 11 ... Roller, 12 ... Plunger chamber, 13 ... Fuel return passage, 14 ... Solenoid valve, 16 ... Solenoid valve drive circuit, 17 ... Angle pulse generation sensor, 18 ... Accelerator opening sensor ,1
9... Control unit, 20... Starter switch, 31... Engine starting detection sensor, 32
... Rotation sensor, 33 ... Drive pulse generating means,
34...Solenoid valve driving means.
Claims (1)
プと高圧プランジヤポンプを設け、ポンプハウジ
ングに形成したフイードポンプの低圧ポンプ室と
プランジヤポンプの高圧プランジヤ室とを連通す
る燃料戻し通路に駆動パルスにて開閉される電磁
弁を介装し、この電磁弁の開閉により燃料の噴射
開始時期と噴射期間とが可変制御される燃料噴射
ポンプを備える一方で、機関始動時に前記プラン
ジヤポンプの圧送行程に同期して前記電磁弁を閉
弁する手段を設けたことを特徴とするデイーゼル
機関の燃料噴射制御装置。 A low-pressure feed pump and a high-pressure plunger pump that rotate in synchronization with engine rotation are provided, and an electromagnetic pump that opens and closes using a drive pulse is installed in the fuel return passage that communicates the low-pressure pump chamber of the feed pump formed in the pump housing with the high-pressure plunger chamber of the plunger pump. The fuel injection pump is equipped with a valve, and the fuel injection start timing and injection period are variably controlled by the opening and closing of the solenoid valve. 1. A fuel injection control device for a diesel engine, characterized in that a means for closing a valve is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18390987U JPH0188037U (en) | 1987-12-02 | 1987-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18390987U JPH0188037U (en) | 1987-12-02 | 1987-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0188037U true JPH0188037U (en) | 1989-06-09 |
Family
ID=31475309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18390987U Pending JPH0188037U (en) | 1987-12-02 | 1987-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0188037U (en) |
-
1987
- 1987-12-02 JP JP18390987U patent/JPH0188037U/ja active Pending
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