JPS5765852A - Preliminary injection device for distribution type fuel injection pump - Google Patents
Preliminary injection device for distribution type fuel injection pumpInfo
- Publication number
- JPS5765852A JPS5765852A JP14198780A JP14198780A JPS5765852A JP S5765852 A JPS5765852 A JP S5765852A JP 14198780 A JP14198780 A JP 14198780A JP 14198780 A JP14198780 A JP 14198780A JP S5765852 A JPS5765852 A JP S5765852A
- Authority
- JP
- Japan
- Prior art keywords
- injection
- passage
- preliminary
- valve
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
PURPOSE: To reduce the generation of NOx in a distribution type fuel injection pump by making a preliminary injection at the time of low speed and low load just before a main injection for changing the rate of injection.
CONSTITUTION: In a plunger barrel 31, a plunger 30 is slided to rotate and reciprocate as interlocking with an engine. The fuel introduced from a suction passage 34 is pressurized in a high pressure chamber 32, and supplied to a fuel injection valve 38 via an oil feed passage 33, a slit-shaped connection port 36 for main injection, and a distribution passage 35'. Meanwhile, the high pressure chamber 32 is connected to a preliminary injection connecting passage 41 via a flow regulation valve 42 to be opened at the time of low speed and low load with high generation of NOx and a check valve 44. The connecting passage 41 can be successively connected to the connection part 36 via a groove 40. Consequently, fuel is supplied to the injection valve 38 just before a main injection when the regulation valve 42 is opened.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14198780A JPS5765852A (en) | 1980-10-13 | 1980-10-13 | Preliminary injection device for distribution type fuel injection pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14198780A JPS5765852A (en) | 1980-10-13 | 1980-10-13 | Preliminary injection device for distribution type fuel injection pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5765852A true JPS5765852A (en) | 1982-04-21 |
Family
ID=15304753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14198780A Pending JPS5765852A (en) | 1980-10-13 | 1980-10-13 | Preliminary injection device for distribution type fuel injection pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5765852A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537170A (en) * | 1984-02-28 | 1985-08-27 | Diesel Kiki Co., Ltd. | Distribution type fuel injection pump |
-
1980
- 1980-10-13 JP JP14198780A patent/JPS5765852A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537170A (en) * | 1984-02-28 | 1985-08-27 | Diesel Kiki Co., Ltd. | Distribution type fuel injection pump |
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