JPS6477744A - Fuel injection pump - Google Patents
Fuel injection pumpInfo
- Publication number
- JPS6477744A JPS6477744A JP87312780A JP31278087A JPS6477744A JP S6477744 A JPS6477744 A JP S6477744A JP 87312780 A JP87312780 A JP 87312780A JP 31278087 A JP31278087 A JP 31278087A JP S6477744 A JPS6477744 A JP S6477744A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- barrel
- lead
- fuel injection
- circumferential groove
- 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
- 239000000446 fuel Substances 0.000 title abstract 4
- 238000002347 injection Methods 0.000 title abstract 4
- 239000007924 injection Substances 0.000 title abstract 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
PURPOSE:To enable effective two-stage injection, in the captioned pump wherein a plunger is fittedly inserted into a barrel, by forming a lead consisting of an inclined groove and a circumferential groove on the plunger so as to be communicated with a pressure chamber respectively, so that the lead and the circumferential groove can be freely opened or closed by respective separate barrels. CONSTITUTION:In a fuel injection pump, fuel is sucked into a pressurizing chamber 6, and after having been pressurized it is discharged by reciprocating a plunger 1 inside a barrel 2. Further, fuel injection quantity is regulated by regulating the effective stroke of the plunger 1 while relatively rotating the plunger 1 and the barrel 2. In this case, on the side circumferential surface 1a of the plunger 1, both a lead 11 consisting of an inclined groove and communicating with the pressurizing chamber 6, and a circumferential groove 12 extending in parallel to the circumferential direction of the plunger and communicating with the same pressurizing chamber 6 are formed. And a first port 4 capable of being superposed on the lead 11 is formed on the barrel 2, and further a second barrel 3 provided with a second port 5 which is capable of being superposed on the circumferential groove 12 is fitted on the plunger 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62312780A JP2686612B2 (en) | 1987-06-26 | 1987-12-09 | Fuel injection pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-160371 | 1987-06-26 | ||
| JP16037187 | 1987-06-26 | ||
| JP62312780A JP2686612B2 (en) | 1987-06-26 | 1987-12-09 | Fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6477744A true JPS6477744A (en) | 1989-03-23 |
| JP2686612B2 JP2686612B2 (en) | 1997-12-08 |
Family
ID=15713525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62312780A Expired - Lifetime JP2686612B2 (en) | 1987-06-26 | 1987-12-09 | Fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2686612B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03164562A (en) * | 1989-11-21 | 1991-07-16 | Yanmar Diesel Engine Co Ltd | Two-stage injection type fuel pump |
| US5592915A (en) * | 1994-09-30 | 1997-01-14 | Zexel Corporation | Pilot injection controller in fuel injection system and method of controlling pilot injection quantity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173672U (en) * | 1984-04-27 | 1985-11-18 | 日野自動車株式会社 | fuel injector |
| JPS6297264U (en) * | 1985-12-10 | 1987-06-20 |
-
1987
- 1987-12-09 JP JP62312780A patent/JP2686612B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173672U (en) * | 1984-04-27 | 1985-11-18 | 日野自動車株式会社 | fuel injector |
| JPS6297264U (en) * | 1985-12-10 | 1987-06-20 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03164562A (en) * | 1989-11-21 | 1991-07-16 | Yanmar Diesel Engine Co Ltd | Two-stage injection type fuel pump |
| US5592915A (en) * | 1994-09-30 | 1997-01-14 | Zexel Corporation | Pilot injection controller in fuel injection system and method of controlling pilot injection quantity |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2686612B2 (en) | 1997-12-08 |
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