JPH0290355U - - Google Patents
Info
- Publication number
- JPH0290355U JPH0290355U JP16834888U JP16834888U JPH0290355U JP H0290355 U JPH0290355 U JP H0290355U JP 16834888 U JP16834888 U JP 16834888U JP 16834888 U JP16834888 U JP 16834888U JP H0290355 U JPH0290355 U JP H0290355U
- Authority
- JP
- Japan
- Prior art keywords
- discharge amount
- valve
- fuel
- pressure
- pump
- 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 13
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 4
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の構成図、第２図は本考案一実
施例を示す全体構成図、第３図は圧力調整弁の拡
大断面図、第４図はデユーテイ比を算出するため
のフローチヤート、第５図は要求燃料吐出量Ｑｆ
および吸気管負圧ＰＭと基本電圧ＶＦＰＢとの関
係を示す線図、第６図はＫＶを算出するためのフ
ローチヤート、第７図は本実施例の動作説明図、
第８図は故障診断を実行するためのフローチヤー
トである。
６……吸気ポート、１２……燃料噴射弁、１５
……燃料ポンプ、１９……圧力調整弁、２９……
モータ、４０……電子制御ユニツト、６０……負
圧センサ、６２……クランク角センサ。
Fig. 1 is a block diagram of the present invention, Fig. 2 is an overall block diagram showing an embodiment of the present invention, Fig. 3 is an enlarged sectional view of the pressure regulating valve, and Fig. 4 is a flowchart for calculating the duty ratio. , FIG. 5 shows the required fuel discharge amount Q f
and a diagram showing the relationship between intake pipe negative pressure PM and basic voltage VFPB, FIG. 6 is a flowchart for calculating KV, and FIG. 7 is an explanatory diagram of the operation of this embodiment.
FIG. 8 is a flowchart for executing fault diagnosis. 6...Intake port, 12...Fuel injection valve, 15
...Fuel pump, 19...Pressure regulating valve, 29...
Motor, 40...Electronic control unit, 60...Negative pressure sensor, 62...Crank angle sensor.
Claims (1)
給する燃料ポンプと、前記燃料噴射弁に供給され
る燃料圧と前記燃料噴射弁が臨む吸気通路内の圧
力との差圧が予め定められた圧力以上のとき開弁
することによつて前記燃料ポンプから吐出される
燃料の一部を前記燃料噴射弁に供給しないように
して前記差圧が予め定められた圧力を越えないよ
うに調整する圧力調整弁と、機関運転状態を検出
する機関運転状態検出手段と、該機関運転状態検
出手段の検出結果に基づいてポンプ基本吐出量を
算出する基本吐出量算出手段と、前記圧力調整弁
が開弁状態か否か検出する開弁状態検出手段と、
該開弁状態検出手段の検出結果に応じて前記差圧
が前記予め定めた圧力となるように吐出量補正値
を増減せしめかつ該吐出量補正値を記憶する吐出
量補正値算出手段と、前記ポンプ基本吐出量と前
記吐出量補正値とからポンプ吐出量を算出する吐
出量算出手段と、該吐出量算出手段の算出結果に
基づいて前記電動機を制御する電動機制御手段と
を備えた内燃機関の燃料供給装置。 A fuel pump that is driven by an electric motor and supplies fuel to the fuel injection valve, and a pressure difference between the fuel pressure supplied to the fuel injection valve and the pressure in the intake passage facing the fuel injection valve is a predetermined pressure. Pressure adjustment that adjusts the differential pressure so that it does not exceed a predetermined pressure by opening the valve in the above cases so that a part of the fuel discharged from the fuel pump is not supplied to the fuel injection valve. a valve, an engine operating state detecting means for detecting an engine operating state, a basic discharge amount calculating means for calculating a pump basic discharge amount based on a detection result of the engine operating state detecting means, and the pressure regulating valve is in an open state. valve open state detection means for detecting whether or not the valve is open;
a discharge amount correction value calculation means for increasing or decreasing a discharge amount correction value so that the differential pressure becomes the predetermined pressure according to a detection result of the valve open state detection means, and storing the discharge amount correction value; An internal combustion engine comprising: a discharge amount calculation means for calculating a pump discharge amount from a pump basic discharge amount and the discharge amount correction value; and an electric motor control means for controlling the electric motor based on a calculation result of the discharge amount calculation means. Fuel supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16834888U JPH0290355U (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16834888U JPH0290355U (en) | 1988-12-28 | 1988-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0290355U true JPH0290355U (en) | 1990-07-18 |
Family
ID=31457449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16834888U Pending JPH0290355U (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0290355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010255501A (en) * | 2009-04-23 | 2010-11-11 | Denso Corp | Fuel pressure controller for direct injection internal combustion engine |
-
1988
- 1988-12-28 JP JP16834888U patent/JPH0290355U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010255501A (en) * | 2009-04-23 | 2010-11-11 | Denso Corp | Fuel pressure controller for direct injection internal combustion engine |
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