JPH0325856U - - Google Patents
Info
- Publication number
- JPH0325856U JPH0325856U JP12409289U JP12409289U JPH0325856U JP H0325856 U JPH0325856 U JP H0325856U JP 12409289 U JP12409289 U JP 12409289U JP 12409289 U JP12409289 U JP 12409289U JP H0325856 U JPH0325856 U JP H0325856U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- flow path
- outlet hole
- cross
- sectional area
- 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
- 239000000446 fuel Substances 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
第１図〜第７図は本考案の第１実施例を示すも
ので、第１図は一部を断面で示した電動燃料ポン
プの正面図、第２図は第１図に示したプレートの
底面図、第３図は第２図の−線断面図、第４
図第１図に示したインレツトボデイの平面図、第
５図は第１図に示した第１ポンプ部の要部拡大図
、第６図は第１ポンプ部の断面積のみを斜線で示
した第５図と同様な拡大図、第７図は第１図に示
した電動燃料ポンプ部におけるポンプ部の流路に
沿つた入口からの回転角とポンプ部内の燃料圧力
との関係を従来例との比較で示した特性線図、第
８図および第９図は第１実施例の変形例を示すも
ので、第８図は第２図に対応するプレートの底面
図、第９図は第８図の−線断面図、第１０図
及び第１１図はそれぞれは燃料としてガソリンを
利用した場合の第１ポンプ室の第１出口穴断面積
と第１ポンプ室の流路断面積との比−ポンプ吐出
流量特性線図及び第１ポンプ室の第１出口穴断面
積と第１ポンプ室の流路断面積との比−第１出口
穴直前の圧力特性線図、第１２図〜第１５図は本
考案の第２実施例を示すもので、第１２図は第１
図と同様な電動燃料ポンプの正面図、第１３図は
第１２図に示したアウトレツトボデイの底面図、
第１４図は第１２図に示した第２ポンプ部の要部
拡大図、第１５図は第２ポンプ部の断面積のみを
斜線で示した第１４図と同様な拡大図、第１５図
は第１２図に示した電動燃料ポンプにおけるポン
プ部の流路に沿つた入口からの回転角とポンプ部
内の燃料圧力との関係を従来例との比較で示した
特性線図、第１６図及び第１７図は従来例を示す
もので、第１６図は第２図に対応するプレートの
底面図、第１７図は第１６図の−線断面
図である。
４…ポンプ部、１５…第１ポンプ室、１６…第
２ポンプ室、１９，２９…第１出口穴、２０…第
２出口穴。
1 to 7 show a first embodiment of the present invention, in which FIG. 1 is a partially sectional front view of the electric fuel pump, and FIG. 2 is a view of the plate shown in FIG. 1. Bottom view, Figure 3 is a sectional view taken along the - line in Figure 2, Figure 4
Figure 5 is a plan view of the inlet body shown in Figure 1, Figure 5 is an enlarged view of the main parts of the first pump section shown in Figure 1, and Figure 6 shows only the cross-sectional area of the first pump section with diagonal lines. Figure 7 is an enlarged view similar to Figure 5, and Figure 7 shows the relationship between the rotation angle from the inlet along the flow path of the electric fuel pump unit shown in Figure 1 and the fuel pressure inside the pump unit in a conventional example. 8 and 9 show modified examples of the first embodiment. FIG. 8 is a bottom view of the plate corresponding to FIG. 2, and FIG. 9 is a bottom view of the plate corresponding to FIG. The - line sectional view in Figure 8, Figures 10 and 11 respectively show the ratio of the first outlet hole cross-sectional area of the first pump chamber to the flow path cross-sectional area of the first pump chamber when gasoline is used as fuel. - Pump discharge flow rate characteristic diagram and ratio of the cross-sectional area of the first outlet hole of the first pump chamber to the cross-sectional area of the flow path of the first pump chamber - Pressure characteristic diagram immediately before the first outlet hole, Figures 12 to 15 The figure shows the second embodiment of the present invention, and Fig. 12 shows the first embodiment.
Figure 13 is a front view of the electric fuel pump similar to the figure, and Figure 13 is a bottom view of the outlet body shown in Figure 12.
Fig. 14 is an enlarged view of the main parts of the second pump section shown in Fig. 12, Fig. 15 is an enlarged view similar to Fig. 14 in which only the cross-sectional area of the second pump section is shown with diagonal lines, and Fig. 15 is an enlarged view of the main parts of the second pump section shown in Fig. 12. FIG. 12 is a characteristic diagram showing the relationship between the rotation angle from the inlet along the flow path of the pump section and the fuel pressure inside the pump section in the electric fuel pump shown in FIG. 12, in comparison with a conventional example; 17 shows a conventional example, FIG. 16 is a bottom view of the plate corresponding to FIG. 2, and FIG. 17 is a sectional view taken along the line -- in FIG. 16. 4... Pump part, 15... First pump chamber, 16... Second pump chamber, 19, 29... First outlet hole, 20... Second outlet hole.
補正 平２．１．１０
図面の簡単な説明を次のように補正する。
明細書の第８行〜第１４行の「第１５図は…
−線断面図」の記載を以下のように補正し
ます。
「第１６図は第１２図に示した電動燃料ポンプに
おけるポンプ部の流路に沿つた入口からの回転角
とポンプ部内の燃料圧力との関係を従来例との比
較で示した特性線図、第１７図及第１８図は従来
例を示すもので、第１７図は第２図に対応するプ
レートの底面図。」
補正 平２．１．１０
図面の簡単な説明を次のように補正する。
明細書の第２１頁第１４行の「である。」の記
載を「、第１８図は第１７図の−線断面
図である。」と補正します。Amendment 2.1.10 Hei 2.1.10 The brief description of the drawing is amended as follows. In lines 8 to 14 of the specification, "Figure 15...
- Line cross-sectional view” has been corrected as follows. 16 is a characteristic diagram showing the relationship between the rotation angle from the inlet along the flow path of the pump section and the fuel pressure inside the pump section in the electric fuel pump shown in FIG. 12 in comparison with a conventional example. Figures 17 and 18 show conventional examples, and Figure 17 is a bottom view of the plate corresponding to Figure 2.'' Correction 2.1.10 The brief description of the drawing is corrected as follows. . The statement ``is.'' on page 21, line 14 of the specification will be corrected to ``Figure 18 is a cross-sectional view taken along the - line in Figure 17.''
Claims (1)
多段式の電動燃料ポンプにおいて、前記ポンプ室
のうちのいずれかのポンプ室における出口穴の面
積と該ポンプ室の流路の断面積との比を適宜設定
することにより、前記出口穴の上流側の燃料圧力
が燃料のベーパー抜けに適した所定の圧力以上と
なるように構成したことを特徴とする電動燃料ポ
ンプにおけるベーパーロツク防止機構。 (2) 前記ポンプ部はウエスコ型式のものであり
、前記出口穴の面積と該ポンプ室の流路の断面積
との比は０．５以上１．４以下の値に設定されて
いることを特徴とする請求項１に記載の電動燃料
ポンプにおけるベーパーロツク防止機構。 (3) 前記ポンプ部はウエスコ型式のものであつ
て、そのインペラの直径は２５mm以上５０mm以下
の範囲であり、前記出口穴の面積と該ポンプ室の
流路の断面積との比は０．５以上１．４以下の値
に設定されていることを特徴とする請求項１に記
載の電動燃料ポンプにおけるベーパーロツク防止
機構。[Claims for Utility Model Registration] (1) In a multi-stage electric fuel pump having a pump section with a plurality of pump chambers, the area of the outlet hole in any one of the pump chambers and the pump chamber; The electric fuel is configured such that the fuel pressure on the upstream side of the outlet hole is equal to or higher than a predetermined pressure suitable for vapor release of the fuel by appropriately setting a ratio between the flow path and the cross-sectional area of the flow path. Vapor lock prevention mechanism in pumps. (2) The pump section is of the Wesco type, and the ratio of the area of the outlet hole to the cross-sectional area of the flow path of the pump chamber is set to a value of 0.5 or more and 1.4 or less. A vapor lock prevention mechanism in an electric fuel pump according to claim 1. (3) The pump section is of the Wesco type, the diameter of the impeller is in the range of 25 mm or more and 50 mm or less, and the ratio of the area of the outlet hole to the cross-sectional area of the flow path of the pump chamber is 0. The vapor lock prevention mechanism in an electric fuel pump according to claim 1, wherein the vapor lock prevention mechanism is set to a value of 5 or more and 1.4 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12409289U JPH0325856U (en) | 1988-11-07 | 1989-10-23 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14531188 | 1988-11-07 | ||
| JP12409289U JPH0325856U (en) | 1988-11-07 | 1989-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0325856U true JPH0325856U (en) | 1991-03-18 |
Family
ID=31718913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12409289U Pending JPH0325856U (en) | 1988-11-07 | 1989-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63201009U (en) * | 1987-06-17 | 1988-12-26 | ||
| JP2008082313A (en) * | 2006-09-29 | 2008-04-10 | Denso Corp | Fuel pump module |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314392A (en) * | 1987-06-15 | 1988-12-22 | Jidosha Denki Kogyo Co Ltd | Fuel pump device with built-in fuel tank |
-
1989
- 1989-10-23 JP JP12409289U patent/JPH0325856U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314392A (en) * | 1987-06-15 | 1988-12-22 | Jidosha Denki Kogyo Co Ltd | Fuel pump device with built-in fuel tank |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63201009U (en) * | 1987-06-17 | 1988-12-26 | ||
| JPH0540887Y2 (en) * | 1987-06-17 | 1993-10-18 | ||
| JP2008082313A (en) * | 2006-09-29 | 2008-04-10 | Denso Corp | Fuel pump module |
| JP4682960B2 (en) * | 2006-09-29 | 2011-05-11 | 株式会社デンソー | Fuel pump module |
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