JPH0237263U - - Google Patents
Info
- Publication number
- JPH0237263U JPH0237263U JP1988114008U JP11400888U JPH0237263U JP H0237263 U JPH0237263 U JP H0237263U JP 1988114008 U JP1988114008 U JP 1988114008U JP 11400888 U JP11400888 U JP 11400888U JP H0237263 U JPH0237263 U JP H0237263U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- chamber
- valve
- supply return
- fuel supply
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図および第２図はこの考案の一実施例を示
すもので、第１図はその縦断正面図、第２図は一
部切欠き側面図である。
１……装置本体、３…燃料加圧部、５……電磁
弁部、３２……小径シリンダ孔（シリンダ孔）、
３２ａ……リークストツパ溝、３３……燃料加圧
室、３６……ポンププランジヤ、５１ａ……小径
孔部（弁収納孔）、５１ｄ……弁座、５１ｅ……
環状溝、５２……弁体、５２ａ……頭部、５２ｄ
……リーク孔、５３……燃料溜まり室、６０……
燃料供給戻り室。
FIGS. 1 and 2 show an embodiment of this invention, with FIG. 1 being a longitudinal sectional front view and FIG. 2 being a partially cutaway side view. 1... Device main body, 3... Fuel pressurizing section, 5... Solenoid valve section, 32... Small diameter cylinder hole (cylinder hole),
32a...Leak stopper groove, 33...Fuel pressurization chamber, 36...Pump plunger, 51a...Small diameter hole (valve storage hole), 51d...Valve seat, 51e...
Annular groove, 52...valve body, 52a...head, 52d
...Leak hole, 53...Fuel storage chamber, 60...
Fuel supply return chamber.
Claims (1)
に連設され、内周面に環状のリークストツパ溝が
形成されたシリンダ孔、およびこのシリンダ孔に
摺動自在に設けられ、前記燃料加圧室内の燃料を
加圧するポンププランジヤを有する燃料加圧部と
、燃料ポンプに接続された燃料供給戻り室、この
燃料供給戻り室に連設され、燃料供給戻り室との
交差部に弁座が形成された弁収納孔、およびこの
弁収納孔に摺動自在に設けられ、前記燃料供給戻
り室内に位置する一端部に前記弁座に着座する頭
部が設けられた弁体を有し、前記弁収納孔の内周
面と前記弁体の外周面との間に、前記燃料加圧室
に連通され、前記弁体の弁座への着座によつて前
記燃料供給戻り室と遮断され、前記弁体の弁座か
らのリフトによつて前記燃料供給戻り室に連通せ
しめられる熱料溜まり室が形成された電磁弁部と
を備えた燃料噴射装置において、前記弁収納孔の
内周面に前記リークストツパ溝に連通された環状
溝を形成し、前記弁体に一端が前記頭部のリフト
方向を向く先端面に開口し、他端が前記環状溝に
臨む外周面に開口するリーク孔を形成したことを
特徴とする燃料噴射装置。 A fuel pressurizing chamber into which fuel is introduced, a cylinder hole connected to the fuel pressurizing chamber and having an annular leak stopper groove formed on the inner circumferential surface, and a cylinder hole slidably provided in the cylinder hole and the fuel pressurizing chamber connected to the fuel pressurizing chamber. A fuel pressurizing section having a pump plunger that pressurizes the fuel in the pressure chamber, a fuel supply return chamber connected to the fuel pump, and a valve seat connected to the fuel supply return chamber and at the intersection with the fuel supply return chamber. a valve housing hole formed therein, and a valve body slidably provided in the valve housing hole and having a head seated on the valve seat at one end located in the fuel supply return chamber; A space between the inner circumferential surface of the valve storage hole and the outer circumferential surface of the valve body is communicated with the fuel pressurizing chamber, and is cut off from the fuel supply return chamber by the seating of the valve body on the valve seat. In the fuel injection device, the electromagnetic valve portion is provided with a heating material accumulation chamber formed therein which is communicated with the fuel supply return chamber by a lift of the valve body from the valve seat. An annular groove is formed that communicates with the leak stopper groove, and a leak hole is formed in the valve body, one end of which opens at a distal end surface facing the lift direction of the head, and the other end of which opens at an outer circumferential surface facing the annular groove. A fuel injection device characterized by:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988114008U JPH0237263U (en) | 1988-09-01 | 1988-09-01 | |
| US07/390,893 US4951874A (en) | 1988-09-01 | 1989-08-08 | Unit fuel injector |
| KR1019890012629A KR930001789B1 (en) | 1988-09-01 | 1989-09-01 | Unit Fuel Injector |
| DE3929134A DE3929134A1 (en) | 1988-09-01 | 1989-09-01 | COMBINED FUEL PUMP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988114008U JPH0237263U (en) | 1988-09-01 | 1988-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0237263U true JPH0237263U (en) | 1990-03-12 |
Family
ID=31354365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988114008U Pending JPH0237263U (en) | 1988-09-01 | 1988-09-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237263U (en) |
-
1988
- 1988-09-01 JP JP1988114008U patent/JPH0237263U/ja active Pending