JPH0368565U - - Google Patents
Info
- Publication number
- JPH0368565U JPH0368565U JP12928789U JP12928789U JPH0368565U JP H0368565 U JPH0368565 U JP H0368565U JP 12928789 U JP12928789 U JP 12928789U JP 12928789 U JP12928789 U JP 12928789U JP H0368565 U JPH0368565 U JP H0368565U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- chamber
- fuel
- pressure
- support shaft
- 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 12
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案による圧力バランス型燃料噴射
装置の燃料噴射機構の一実施例を示す要部断面図
、第２図は先行技術による燃料噴射装置の概略断
面図、第３図は流入側電磁弁と消費側電磁弁のエ
ンジン回転数とデユーテイ比の関係を示す図、第
４図は流入側電磁弁と消費側電磁弁の各開口面積
に応じた、燃圧Ｐａに対する燃料流量Ｑｃ，Ｑｄ
を示す図、第５図は吸入負圧Ｐｍとエンジン回転
数に応じた要求燃料流量Ｑを示す図である。
１０……ダイアフラム、１１……上室、１２…
…下室、３３……噴射弁、３４ａ……シート面、
３５……弁体、３９……レバー、４０……支軸。
Fig. 1 is a sectional view of essential parts showing an embodiment of the fuel injection mechanism of the pressure-balanced fuel injection device according to the present invention, Fig. 2 is a schematic sectional view of a fuel injection device according to the prior art, and Fig. 3 is an inflow side electromagnetic A diagram showing the relationship between the engine speed and duty ratio of the valve and the consumption-side solenoid valve, Figure 4 shows the fuel flow rate Q c , Q with respect to the fuel pressure P a according to each opening area of the inflow-side solenoid valve and the consumption-side solenoid valve. d
FIG. 5 is a diagram showing the required fuel flow rate Q according to the suction negative pressure P m and the engine speed. 10...Diaphragm, 11...Upper chamber, 12...
... lower chamber, 33 ... injection valve, 34a ... seat surface,
35... Valve body, 39... Lever, 40... Support shaft.
Claims (1)
ムによつて仕切られていて、第一室の燃圧の変動
に対して第二室の燃圧との差圧によつてダイアフ
ラムが変位し、これに連動する噴射弁の弁体によ
つて、両室の燃圧がバランスするように第二室か
ら燃料が噴射されるようになつている圧力バラン
ス型燃料噴射装置において、 支軸を中心に回動可能な連動部材を前記ダイア
フラムと弁体とに当接するように配置すると共に
、該連動部材と弁体との当接点から支軸までの距
離が、連動部材とダイアフラムとの当接点から支
軸までの距離より短くなつていることを特徴とす
る燃料噴射機構。[Claims for Utility Model Registration] The first chamber and the second chamber provided with the injection valve are separated by a diaphragm, and the differential pressure between the fuel pressure in the second chamber and the fuel pressure in the second chamber is A pressure balance type fuel injection device in which the diaphragm is displaced by the diaphragm, and fuel is injected from the second chamber by the valve body of the injector linked to this to balance the fuel pressure in both chambers. , an interlocking member rotatable about a support shaft is arranged so as to abut the diaphragm and the valve body, and a distance from a point of contact between the interlocking member and the valve body to the support shaft is such that the interlocking member is A fuel injection mechanism characterized in that the distance is shorter than the distance from the point of contact with the diaphragm to the support shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12928789U JPH0368565U (en) | 1989-11-07 | 1989-11-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12928789U JPH0368565U (en) | 1989-11-07 | 1989-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0368565U true JPH0368565U (en) | 1991-07-05 |
Family
ID=31676926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12928789U Pending JPH0368565U (en) | 1989-11-07 | 1989-11-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0368565U (en) |
-
1989
- 1989-11-07 JP JP12928789U patent/JPH0368565U/ja active Pending