JPH0228543U - - Google Patents
Info
- Publication number
- JPH0228543U JPH0228543U JP10796988U JP10796988U JPH0228543U JP H0228543 U JPH0228543 U JP H0228543U JP 10796988 U JP10796988 U JP 10796988U JP 10796988 U JP10796988 U JP 10796988U JP H0228543 U JPH0228543 U JP H0228543U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- fuel injection
- engine
- sensor
- fuel
- 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
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000000446 fuel Substances 0.000 claims description 9
- 230000005672 electromagnetic field Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 2
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案のクレーム対応図、第２図は一
実施例のコントロールユニツトのブロツク図、第
３図はこの実施例の加速度センサの取り付け位置
を示す平面図、第４図は第３図のＡ―Ａ線断面図
、第５図はこのセンサにて得られる振動波形図、
第６図は前記実施例のＣＰＵの制御動作を説明す
るための流れ図、第７図ないし第１２図は第５図
の制御動作において使用される各値の内容を示す
特性図である。第１３図は従来例の噴射ポンプの
断面図である。
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、１２……プランジヤ室、１３…
…燃料戻し通路、１４……電磁弁、２１……アク
セルペダル開度センサ、２２……回転数センサ、
２３……基本噴射期間算出手段、２４……振動セ
ンサ、２５……補正量算出手段、２６……最終噴
射期間決定手段、３１……リフアレンスパルス発
生センサ、３２……スケールパルス発生センサ、
３９……加速度センサ、４１……入出力回路、４
２……ＲＯＭ、４３……ＲＡＭ、４４……ＣＰＵ
、４５……コントロールユニツト、５１……シリ
ンダヘツドカバー。
Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a block diagram of a control unit of one embodiment, Fig. 3 is a plan view showing the mounting position of the acceleration sensor of this embodiment, and Fig. 4 is a diagram of Fig. 3. Figure 5 is the vibration waveform diagram obtained with this sensor.
FIG. 6 is a flowchart for explaining the control operation of the CPU of the embodiment, and FIGS. 7 to 12 are characteristic diagrams showing the contents of each value used in the control operation of FIG. 5. FIG. 13 is a sectional view of a conventional injection pump. 1... Pump housing, 3... Plunger pump, 5... Pump chamber, 7... Plunger, 9...
...Face cam, 12...Plunger chamber, 13...
... Fuel return passage, 14 ... Solenoid valve, 21 ... Accelerator pedal opening sensor, 22 ... Rotation speed sensor,
23... Basic injection period calculation means, 24... Vibration sensor, 25... Correction amount calculation means, 26... Final injection period determination means, 31... Reference pulse generation sensor, 32... Scale pulse generation sensor,
39... Acceleration sensor, 41... Input/output circuit, 4
2...ROM, 43...RAM, 44...CPU
, 45... Control unit, 51... Cylinder head cover.
Claims (1)
ポン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終了時期の少なくともいずれ
か一方が可変制御される燃料噴射ポンプを備える
デイーゼルエンジンの燃料噴射制御装置において
、エンジンの作動状態量を検出するセンサと、こ
のセンサ検出値に応じて全気筒に共通な燃料の基
本噴射期間を算出する手段と、各気筒のエンジン
振動を測定するセンサと、測定したエンジン振動
が所定値となるように各気筒についての噴射期間
の補正量を算出する手段と、この補正量にて前記
基本噴射期間を補正して前記燃料噴射ポンプから
の燃料の噴射期間を各気筒について決定する手段
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 field that is opened and closed by a drive pulse is installed in a 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. In a fuel injection control device for a diesel engine that includes a fuel injection pump that is equipped with a valve and at least one of the fuel injection start timing and injection end timing is variably controlled by opening and closing the solenoid valve, the operating state quantity of the engine is a sensor that detects the engine vibration, a means that calculates a basic fuel injection period common to all cylinders according to the detected value of the sensor, a sensor that measures engine vibration of each cylinder, and a means that adjusts the measured engine vibration to a predetermined value. means for calculating a correction amount of the injection period for each cylinder, and means for correcting the basic injection period using the correction amount to determine the injection period of fuel from the fuel injection pump for each cylinder. A diesel engine fuel injection control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10796988U JPH0228543U (en) | 1988-08-17 | 1988-08-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10796988U JPH0228543U (en) | 1988-08-17 | 1988-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0228543U true JPH0228543U (en) | 1990-02-23 |
Family
ID=31342866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10796988U Pending JPH0228543U (en) | 1988-08-17 | 1988-08-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0228543U (en) |
-
1988
- 1988-08-17 JP JP10796988U patent/JPH0228543U/ja active Pending
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