JPH046562U - - Google Patents
Info
- Publication number
- JPH046562U JPH046562U JP1990045463U JP4546390U JPH046562U JP H046562 U JPH046562 U JP H046562U JP 1990045463 U JP1990045463 U JP 1990045463U JP 4546390 U JP4546390 U JP 4546390U JP H046562 U JPH046562 U JP H046562U
- Authority
- JP
- Japan
- Prior art keywords
- injection
- valve
- fuel
- pressure
- cylinder
- 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
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 239000000446 fuel Substances 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 1
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概
略構成を説明するための模型図、第２図は第１図
に示した構成の作用を説明するための線図、第３
図および第４図は第１図に示した構成の一部変形
例をそれぞれ説明するための模型図、第５図Ａは
第１図に示した構成の他の変形例を説明するため
の模型図、第５図Ｂは第５図Ａ中、符号Ｂ−Ｂ線
で示す方向の矢視断面図、第６図は第１図に示し
た構成における別の作用を説明するための線図、
第７図は従来の燃料噴射装置の一例を説明するた
めの模型図である。
１……燃料噴射ポンプ、１Ａ……プランジヤ、
２……駆動カム、３，３０……燃料噴射ノズル、
３Ａ，３０Ａ……開弁圧室、４……噴射管、４Ａ
……分岐した噴射管、５……シリンダ、６……電
磁弁、６Ａ……開閉弁、６Ｂ……電磁石、７……
圧送方向切換弁、７Ａ……第１の弁室、７Ｂ……
第２の弁室、７Ｃ……中立室、７Ｄ……スプール
、７Ｅ……電磁石、９……円盤、９Ａ……圧送方
向切換弁の電磁石の態位を設定する一部材である
導電部、１１，１２……圧送方向切換弁の電磁石
の態位を設定する他部材である端子、１２……位
相センサ。
FIG. 1 is a model diagram for explaining the general structure of a fuel injection device according to an embodiment of the present invention, FIG. 2 is a diagram for explaining the operation of the structure shown in FIG. 1, and FIG.
4 and 4 are model diagrams for explaining a partial modification of the configuration shown in FIG. 1, respectively, and FIG. 5A is a model diagram for explaining another modification of the configuration shown in FIG. 1. Figure 5B is a cross-sectional view taken along the line B--B in Figure 5A, and Figure 6 is a diagram for explaining another operation in the configuration shown in Figure 1.
FIG. 7 is a schematic diagram for explaining an example of a conventional fuel injection device. 1...Fuel injection pump, 1A...Plunger,
2... Drive cam, 3,30... Fuel injection nozzle,
3A, 30A... Valve opening pressure chamber, 4... Injection pipe, 4A
... Branched injection pipe, 5 ... Cylinder, 6 ... Solenoid valve, 6A ... Opening/closing valve, 6B ... Electromagnet, 7 ...
Pressure feeding direction switching valve, 7A...first valve chamber, 7B...
2nd valve chamber, 7C...neutral chamber, 7D...spool, 7E...electromagnet, 9...disc, 9A...conductive part which is a member that sets the attitude of the electromagnet of the pressure feeding direction switching valve, 11 , 12... Terminal which is another member for setting the attitude of the electromagnet of the pressure feeding direction switching valve, 12... Phase sensor.
Claims (1)
噴射ノズルの針弁用開弁圧室とを連結している噴
射管の一部を分岐させた端部が接続されるととも
に、この接続部とは別の位置に燃料の還流部を有
するシリンダと、 上記シリンダ内で摺動自在に設けられていて、
摺動方向一端に上記燃料の還流部を開閉する弁を
備えたノーマルオープン形式の電磁弁と、 上記電磁弁と上記噴射ノズルとの間に位置し、
上記電磁弁からの噴射管が入力側に接続され、エ
ンジンの複数気筒に設けてある噴射ノズルが出力
側に接続してあり、通常時には、上記複数気筒の
うちの燃焼行程が早く実行される側の気筒に設け
てある噴射ノズルに対して燃料の圧送を行う態位
を設定されている圧送方向切換弁と、 上記圧送方向切換弁の態位切換駆動部に出力側
が接続され、上記噴射ポンプにおける駆動カムの
回転速度を上記噴射ノズルの数に応じた倍数に設
定したときの回転位相を検知することでエンジン
側でのカム位相を検知する部材を入力側に接続さ
れている圧送態位切換設定部材とを備え、 上記電磁弁は上記噴射ポンプ内のプランジヤが
上限位置に移動する過程において上記噴射ノズル
を閉じた後、一旦開放して再度閉じることで主噴
射前の小量噴射を設定するとともに、上記圧送態
位切換設定部材は、上記電磁弁が作動するまでの
間に一つの気筒に対する燃料の圧送を行える態位
に圧送方向切換弁を設定することを特徴とする燃
料噴射装置。[Scope of Claim for Utility Model Registration] A partially branched end of an injection pipe connecting an injection pump equipped with a plunger for pumping fuel and a valve opening pressure chamber for a needle valve of an injection nozzle is connected. , a cylinder having a fuel recirculation part at a position different from this connection part, and a cylinder provided slidably within the cylinder,
a normally open type solenoid valve equipped with a valve for opening and closing the fuel recirculation portion at one end in the sliding direction; located between the solenoid valve and the injection nozzle;
The injection pipe from the solenoid valve is connected to the input side, and the injection nozzles provided in multiple cylinders of the engine are connected to the output side, and under normal conditions, the combustion stroke of the multiple cylinders is executed earlier. A pressure-feeding direction switching valve is set to a position for pressure-feeding fuel to the injection nozzle provided in the cylinder, and an output side is connected to a position switching drive section of the pressure-feeding direction switching valve, Pumping position switching setting with a member connected to the input side that detects the cam phase on the engine side by detecting the rotational phase when the rotational speed of the drive cam is set to a multiple according to the number of injection nozzles. The electromagnetic valve closes the injection nozzle during the movement of the plunger in the injection pump to the upper limit position, and then opens and closes again to set a small amount of injection before the main injection. . A fuel injection device, wherein the pressure feeding position switching setting member sets the pressure feeding direction switching valve to a position in which fuel can be pumped to one cylinder until the electromagnetic valve is activated.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990045463U JP2530718Y2 (en) | 1990-04-27 | 1990-04-27 | Fuel injection device |
| DE19914190251 DE4190251T (en) | 1990-02-07 | 1991-02-07 | |
| KR1019910701265A KR950013543B1 (en) | 1990-02-07 | 1991-02-07 | Fuel injection device |
| PCT/JP1991/000148 WO1991012421A1 (en) | 1990-02-07 | 1991-02-07 | Fuel injection device |
| DE4190251A DE4190251C2 (en) | 1990-02-07 | 1991-02-07 | Fuel injection device with solenoid valve |
| US07/768,616 US5271366A (en) | 1990-02-07 | 1991-02-07 | Fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990045463U JP2530718Y2 (en) | 1990-04-27 | 1990-04-27 | Fuel injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH046562U true JPH046562U (en) | 1992-01-21 |
| JP2530718Y2 JP2530718Y2 (en) | 1997-03-26 |
Family
ID=31559662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990045463U Expired - Lifetime JP2530718Y2 (en) | 1990-02-07 | 1990-04-27 | Fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2530718Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157467A (en) * | 1982-03-15 | 1983-09-19 | 木村 輝男 | Moxa instrument |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54159524A (en) * | 1978-06-06 | 1979-12-17 | Diesel Kiki Co Ltd | Fuel injection device for internal combustion engine |
| JPS59103934A (en) * | 1982-12-07 | 1984-06-15 | Mitsuwa Seiki Co Ltd | Fuel feed device of internal-combustion engine |
-
1990
- 1990-04-27 JP JP1990045463U patent/JP2530718Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54159524A (en) * | 1978-06-06 | 1979-12-17 | Diesel Kiki Co Ltd | Fuel injection device for internal combustion engine |
| JPS59103934A (en) * | 1982-12-07 | 1984-06-15 | Mitsuwa Seiki Co Ltd | Fuel feed device of internal-combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157467A (en) * | 1982-03-15 | 1983-09-19 | 木村 輝男 | Moxa instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2530718Y2 (en) | 1997-03-26 |
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