JPS6073875U - fuel injection pump discharge valve - Google Patents
fuel injection pump discharge valveInfo
- Publication number
- JPS6073875U JPS6073875U JP16603083U JP16603083U JPS6073875U JP S6073875 U JPS6073875 U JP S6073875U JP 16603083 U JP16603083 U JP 16603083U JP 16603083 U JP16603083 U JP 16603083U JP S6073875 U JPS6073875 U JP S6073875U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fuel injection
- injection pump
- valve body
- discharge valve
- 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
- 238000002347 injection Methods 0.000 title claims description 9
- 239000007924 injection Substances 0.000 title claims description 9
- 239000000446 fuel Substances 0.000 title claims description 7
- 230000000717 retained effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の吐出弁を具えた燃料噴射装置の断面図、
第２図は従来の噴射量特性の説明図、第３図は本考案の
燃料噴射ポンプの吐出弁の一実施例にかかる断面図、第
４図は着座緩衝リングの断面図、第５図は本考案の噴射
率の説明図、第６図は本考案の噴射量特性の説明図であ
る。
図面中、２０は吐出弁、２１はバルブシート、２１ａは
中心穴、２２は弁体、２２ａはスプリングシート、２“
２ｂはシール面、２２ｃは吸戻しカラー、２３はスプリ
ング、２４は着座緩衝リング、２５はバルブホルダ、２
６は吐出室、２７は連通路、２７ａ、２７ｃは孔、２７
ｂは円周溝である。
゛ 本°ンア回ψ云ｔ（１，１
ｋｔｌｌｊ＼１−１＼いＪ
−不−ンブ回甲ｆ２丸Figure 1 is a cross-sectional view of a fuel injection device equipped with a conventional discharge valve.
Fig. 2 is an explanatory diagram of conventional injection quantity characteristics, Fig. 3 is a sectional view of an embodiment of the discharge valve of the fuel injection pump of the present invention, Fig. 4 is a sectional view of the seating buffer ring, and Fig. 5 is FIG. 6 is an explanatory diagram of the injection rate of the present invention, and FIG. 6 is an explanatory diagram of the injection amount characteristics of the present invention. In the drawing, 20 is a discharge valve, 21 is a valve seat, 21a is a center hole, 22 is a valve body, 22a is a spring seat, 2"
2b is a sealing surface, 22c is a suction collar, 23 is a spring, 24 is a seating buffer ring, 25 is a valve holder, 2
6 is a discharge chamber, 27 is a communication path, 27a, 27c are holes, 27
b is a circumferential groove.゛ This is the turn ψ (1, 1
ktllj\1-1\iJ
Claims (1)
バレル室と噴射ノズルに連通ずるバルブホルダの吐出室
との間に配置されるバルブシートと、このバルブシート
内をスプリングに押圧されなから摺動可能な弁体とから
なる燃料噴射ポンプの吐出弁において、前記弁体上部の
スプリングシート外周面と前記バルブホルダ内周面との
隙間を減少させ保持される燃料により弁体の着座を緩衝
する着座緩衝リングを前記バルブホルダ内のパル、
ブシート面に近接して設ける一方、この着座緩衝リング
に一端が前記吐出室に連通ずると共に他端が前記弁体の
吸戻しカラーのリフト範囲内に開口して前記バレル室と
連通ずる連通路を形成したことを特徴とする燃料噴射ポ
ンプの吐出弁。A valve seat is arranged between the barrel chamber of the plunger barrel, where fuel is pressurized by the plunger, and the discharge chamber of the valve holder, which communicates with the injection nozzle. In a discharge valve of a fuel injection pump comprising a valve body, a seating buffer ring reduces the gap between the outer circumferential surface of a spring seat on the upper part of the valve body and the inner circumferential surface of the valve holder and cushions the seating of the valve body by the retained fuel. The pal in the valve holder,
The seating buffer ring is provided with a communication path, one end of which communicates with the discharge chamber, and the other end of which opens within the lift range of the suction/return collar of the valve body and communicates with the barrel chamber. A discharge valve for a fuel injection pump, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16603083U JPS6073875U (en) | 1983-10-28 | 1983-10-28 | fuel injection pump discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16603083U JPS6073875U (en) | 1983-10-28 | 1983-10-28 | fuel injection pump discharge valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6073875U true JPS6073875U (en) | 1985-05-24 |
| JPH0217178Y2 JPH0217178Y2 (en) | 1990-05-14 |
Family
ID=30363590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16603083U Granted JPS6073875U (en) | 1983-10-28 | 1983-10-28 | fuel injection pump discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6073875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013015133A (en) * | 2012-03-06 | 2013-01-24 | Tacmina Corp | Pump |
| US10066616B2 (en) | 2011-07-01 | 2018-09-04 | Tacmina Corporation | Pump and method for operating pump |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4887225A (en) * | 1972-02-28 | 1973-11-16 | ||
| JPS52143526U (en) * | 1976-04-23 | 1977-10-31 |
-
1983
- 1983-10-28 JP JP16603083U patent/JPS6073875U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4887225A (en) * | 1972-02-28 | 1973-11-16 | ||
| JPS52143526U (en) * | 1976-04-23 | 1977-10-31 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10066616B2 (en) | 2011-07-01 | 2018-09-04 | Tacmina Corporation | Pump and method for operating pump |
| JP2013015133A (en) * | 2012-03-06 | 2013-01-24 | Tacmina Corp | Pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0217178Y2 (en) | 1990-05-14 |
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