JPS55146265A - Method of adjusting fuel injection pump - Google Patents
Method of adjusting fuel injection pumpInfo
- Publication number
- JPS55146265A JPS55146265A JP5334079A JP5334079A JPS55146265A JP S55146265 A JPS55146265 A JP S55146265A JP 5334079 A JP5334079 A JP 5334079A JP 5334079 A JP5334079 A JP 5334079A JP S55146265 A JPS55146265 A JP S55146265A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- injection
- send
- fuel
- pressure
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
PURPOSE: To enhance the injection property of a fuel injection pump, by prescribing at almost 1:1 the ratio of the set pressure of a send-out valve to the opening pressure of an overflow valve for causing excess fuel in an oil reservoir of a pump housing to overflow.
CONSTITUTION: The ratio of the set pressure of the send-out valve 1 of a fuel injection pump to the opening pressure of its overflow valve 12 is prescribed at such a value of 1:1 that the send-out valve 1 is lifted simultaneously with the opening of the overflow valve 12 at end of injection. When pressre in an injection pipe becomes lower than that in a fuel chamber F just after the pressural supply travel of a plunger 10 and the opening of the send-out valve 1, the valve element of the valve 1 is lifted so that fuel in the fuel chamber F is introdused into the injection pipe through a gap between the inside surface of the center hole 5a of a valve seat 5 and the flatly nicked part 3a' of suck-back collar 3a of the send-out valve 1 and another gap between the valve element 2 and the valve fitting face 5a' of the valve seat 5. As a result, the pressure in the injection pipe is kept positive to prevent injection performance from becoming unstable due to negative pressure in the injection pipe.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5334079A JPS55146265A (en) | 1979-05-02 | 1979-05-02 | Method of adjusting fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5334079A JPS55146265A (en) | 1979-05-02 | 1979-05-02 | Method of adjusting fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55146265A true JPS55146265A (en) | 1980-11-14 |
| JPS5647384B2 JPS5647384B2 (en) | 1981-11-09 |
Family
ID=12940021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5334079A Granted JPS55146265A (en) | 1979-05-02 | 1979-05-02 | Method of adjusting fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55146265A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01134066A (en) * | 1987-11-19 | 1989-05-26 | Yanmar Diesel Engine Co Ltd | Fuel injection pump |
| JPH01151769A (en) * | 1987-12-08 | 1989-06-14 | Yanmar Diesel Engine Co Ltd | Fuel injection pump |
| KR100435719B1 (en) * | 2001-06-18 | 2004-06-12 | 현대자동차주식회사 | over flow valve structure for diesel engine |
-
1979
- 1979-05-02 JP JP5334079A patent/JPS55146265A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01134066A (en) * | 1987-11-19 | 1989-05-26 | Yanmar Diesel Engine Co Ltd | Fuel injection pump |
| JPH01151769A (en) * | 1987-12-08 | 1989-06-14 | Yanmar Diesel Engine Co Ltd | Fuel injection pump |
| KR100435719B1 (en) * | 2001-06-18 | 2004-06-12 | 현대자동차주식회사 | over flow valve structure for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5647384B2 (en) | 1981-11-09 |
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