JP2524675Y2 - Natural flow type fuel supply system for diesel engine - Google Patents

Natural flow type fuel supply system for diesel engine

Info

Publication number
JP2524675Y2
JP2524675Y2 JP1990059949U JP5994990U JP2524675Y2 JP 2524675 Y2 JP2524675 Y2 JP 2524675Y2 JP 1990059949 U JP1990059949 U JP 1990059949U JP 5994990 U JP5994990 U JP 5994990U JP 2524675 Y2 JP2524675 Y2 JP 2524675Y2
Authority
JP
Japan
Prior art keywords
fuel
passage
filter
pump
fuel injection
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.)
Expired - Lifetime
Application number
JP1990059949U
Other languages
Japanese (ja)
Other versions
JPH0419659U (en
Inventor
信吉 岩崎
忠夫 水野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP1990059949U priority Critical patent/JP2524675Y2/en
Publication of JPH0419659U publication Critical patent/JPH0419659U/ja
Application granted granted Critical
Publication of JP2524675Y2 publication Critical patent/JP2524675Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 〈産業上の利用分野〉 本考案は、フィードポンプによる圧送給油形式とは異
なるディーゼルエンジンの自然流下式燃料供給装置に関
し、フィードポンプのエア抜きを円滑に行えるものを提
供する。
[Detailed description of the invention] <Industrial application field> The present invention relates to a natural flow type fuel supply device for a diesel engine different from a pressurized oil supply type using a feed pump, and provides a device that can smoothly bleed the air from the feed pump. I do.

〈従来技術〉 一般に、ディーゼルエンジンの自然流下式燃料供給装
置では、燃料タンク1と、燃料フィルタ2の下流側に位
置する燃料供給系との落差による圧力差で、燃料を燃料
噴射ポンプ3に供給するように構成される。
<Prior Art> Generally, in a natural-flow fuel supply device for a diesel engine, fuel is supplied to a fuel injection pump 3 by a pressure difference between a fuel tank 1 and a fuel supply system located downstream of a fuel filter 2 due to a head difference. It is configured to

従って、本考案の対象となるディーゼルエンジンの自
然流下式燃料供給装置の基本構造は、第1図又は第2図
に示すように、 燃料タンク1の下方に燃料フィルタ2を配置し、燃料
タンク1を燃料フィルタ2及び燃料噴射ポンプ3に燃料
通路4で燃料自然流下供給可能に接続し、 燃料フィルタ2をフィルタ用エア抜き通路5で燃料タ
ンク1にエア抜き可能に構成し、 燃料噴射ポンプ3をポンプ用吹き戻し通路6で燃料タ
ンク1にエア抜き及び燃料吹き戻し可能に構成した形式
のものである。
Therefore, the basic structure of a natural-flow fuel supply device for a diesel engine, which is an object of the present invention, has a fuel filter 2 disposed below a fuel tank 1 as shown in FIG. Is connected to the fuel filter 2 and the fuel injection pump 3 so as to be able to supply the fuel under natural flow through the fuel passage 4, and the fuel filter 2 is configured to be able to bleed air from the fuel tank 1 through the filter air bleeding passage 5. The pump blow-back passage 6 is configured to be capable of bleeding air and returning fuel to the fuel tank 1.

この形式の従来技術としては、第2図に示すように、 燃料フィルタ2を燃料タンク1にフィルタ用エア抜き
管5で接続し、燃料噴射ポンプ3を燃料タンク1にポン
プ用吹き戻し管6で接続して、燃料フィルタ2のエア抜
きと燃料噴射ポンプ3のエア抜きとを別々の配管で行う
ように構成したものがある。
As a prior art of this type, as shown in FIG. 2, a fuel filter 2 is connected to a fuel tank 1 by a filter air vent pipe 5, and a fuel injection pump 3 is connected to the fuel tank 1 by a pump blow-back pipe 6. In some cases, air is removed from the fuel filter 2 and air is removed from the fuel injection pump 3 by separate pipes.

〈考案が解決しようとする課題〉 一般的に、燃料フィルタ2のフィルタエレメントが目
詰まり傾向を示したり、外気温の低下で燃料の粘性が大
きくなったりすると、燃料フィルタ2が燃料タンク1に
対して負圧に傾き易い。
<Problem to be Solved by the Invention> Generally, when the filter element of the fuel filter 2 shows a tendency to clog, or when the viscosity of the fuel increases due to a decrease in outside temperature, the fuel filter 2 Tend to tilt to negative pressure.

この場合、上記従来技術では、燃料フィルタ2が、エ
アを抜くべきフィルタ用エア抜き管5から逆にエアを吸
い込んでエアロックを起こし、燃料の供給がスムーズに
行かなくなる虞れが少なくない。
In this case, in the above-described conventional technique, the fuel filter 2 draws air from the filter air vent pipe 5 from which air is to be vented, thereby causing an air lock, and the fuel supply may not be smoothly performed.

本考案は、燃料フィルタが目詰まり気味になるなどし
た場合でも、エアの吸い込みを防止することを技術的課
題とする。
An object of the present invention is to prevent air from being sucked even when the fuel filter becomes slightly clogged.

〈課題を解決するための手段〉 上記課題を達成するための手段を、実施例を示す図面
により以下に説明する。
<Means for Solving the Problems> Means for achieving the above problems will be described below with reference to the drawings showing the embodiments.

即ち、請求項1の考案は、燃料タンク(1)の下方に
燃料フィルタ(2)と燃料噴射ポンプ(3)とを配置
し、燃料通路(4)によって燃料タンク(1)から燃料
フィルタ(2)と燃料噴射ポンプ(3)との順に燃料自
然流下供給可能に接続し、燃料フィルタ(2)の燃料出
口(24)側をフィルタ用エア抜き通路(5)で燃料タン
ク(1)にエア抜き可能に構成し、燃料噴射ポンプ
(3)をポンプ用吹き戻し通路(6)で燃料タンク
(1)にエア抜き及び燃料吹き戻し可能に構成したディ
ーゼルエンジンの自然流下式供給装置において、フィル
タ用エア抜き通路(5)とポンプ用吹き戻し通路(6)
とのいずれか一方の出口(7)を他方の途中部(8)に
接続し、ポンプ用吹き戻し通路(6)の入口(10)に絞
り部(12)を形成したものである。
That is, in the present invention, a fuel filter (2) and a fuel injection pump (3) are disposed below a fuel tank (1), and the fuel filter (2) is moved from the fuel tank (1) by a fuel passage (4). ) And the fuel injection pump (3) are connected in such a manner that the fuel can flow naturally downward, and the fuel outlet (24) of the fuel filter (2) is vented to the fuel tank (1) through the filter air vent passage (5). In a natural flow type supply device for a diesel engine, the fuel injection pump (3) is configured to be capable of bleeding air and returning fuel to the fuel tank (1) through a pump blow-back passage (6). Extraction passage (5) and blow-back passage for pump (6)
One of the outlets (7) is connected to the other middle part (8), and a throttle part (12) is formed at the inlet (10) of the pump blow-back passage (6).

また、請求項2の考案は上記請求項1に記載の構成に
おいて、 燃料噴射ノズル(14)から導出したノズル用戻し通路
(15)の出口(16)をフィルタ用エア抜き通路(5)と
ポンプ用吹き戻し通路(6)とのいずれか一方に接続し
たものである。
According to a second aspect of the present invention, in the configuration of the first aspect, the outlet (16) of the nozzle return passage (15) derived from the fuel injection nozzle (14) is connected to the filter air vent passage (5) and the pump. Connected to one of the air blow-back passages (6).

〈作用〉 (1)請求項1の考案は、例えば第1図に示すように、
次のように作用する。
<Operation> (1) The invention of claim 1 is, for example, as shown in FIG.
It works as follows.

燃料タンク(1)内の燃料は、燃料通路(4)を介し
て燃料タンク(1)から燃料フィルタ(2)と燃料噴射
ポンプ(3)との順に通ったのち、燃料噴射ノズル(1
4)へ送られる。
The fuel in the fuel tank (1) passes through the fuel passage (4) from the fuel tank (1) in the order of the fuel filter (2) and the fuel injection pump (3), and then passes through the fuel injection nozzle (1).
Sent to 4).

また、上記燃料噴射ポンプ(3)から燃料噴射ノズル
(14)へ送られずに余った燃料は、絞り部(12)を通っ
てポンプ用吹き戻し通路(6)へ押し出される。そのポ
ンプ用吹き戻し通路(6)へ一旦押し出された燃料が上
記絞り部(12)によって燃料噴射ポンプ(3)側への戻
りが抑制されることにより、ポンプ用吹き戻し通路
(6)内に溜まった燃料の液面が上昇する。すると、そ
のポンプ用吹き戻し通路(6)内に溜まった燃料がフィ
ルタ用エア抜き通路(5)へ流れ込んでフィルタ用エア
抜き通路(5)内が燃料で満たされる。
The surplus fuel that is not sent from the fuel injection pump (3) to the fuel injection nozzle (14) is pushed out to the pump blow-back passage (6) through the throttle (12). The fuel once pushed out to the pump blow-back passage (6) is prevented from returning to the fuel injection pump (3) by the throttle portion (12), so that the fuel flows into the pump blow-back passage (6). The liquid level of the accumulated fuel rises. Then, the fuel accumulated in the pump blow-back passage (6) flows into the filter air vent passage (5), and the inside of the filter air vent passage (5) is filled with fuel.

(2)請求項2の考案は、上記の作用に加えて更に次の
ように作用する。
(2) In addition to the above operation, the invention according to claim 2 operates as follows.

燃料噴射ノズル(14)内をオーバーフローした燃料が
ノズル用戻し通路(15)を通ってフィルタ用エア抜き通
路(5)とポンプ用吹き戻し通路(6)とのいずれか一
方へ流れ込むことにより、それらの通路(5)(6)が
燃料で一層満たされる。
The fuel overflowing in the fuel injection nozzle (14) flows through the nozzle return passage (15) into one of the filter air vent passage (5) and the pump blow back passage (6), thereby causing the fuel to flow therethrough. Passages (5) and (6) are further filled with fuel.

〈考案の効果〉 燃料噴射ポンプからポンプ用吹き戻し通路へ押し出し
た燃料によってフィルタ用エア抜き通路内が燃料で確実
に満たされるので、燃料フィルタの目詰まりや外気温の
低下による燃料の粘性の増大で燃料フィルタの燃料出口
側が負圧に傾いた際でもフィルタ用エア抜き通路を介し
て燃料通路内へエアが吸い込まれることが抑制される。
<Effect of the Invention> The fuel pushed out from the fuel injection pump to the pump blow-back passage surely fills the filter air vent passage with fuel, so that the fuel filter is clogged and the fuel viscosity increases due to a decrease in outside temperature. Accordingly, even when the fuel outlet side of the fuel filter is inclined to the negative pressure, the suction of air into the fuel passage via the filter air vent passage is suppressed.

従って、燃料通路内でのエアロックを抑制して燃料を
燃料噴射ノズルへスムーズに供給できる。
Therefore, the fuel can be smoothly supplied to the fuel injection nozzle by suppressing the air lock in the fuel passage.

フィルタ用エア抜き通路とポンプ用吹き戻し通路とを
燃料タンクへの戻りの途中で合流させ、ポンプ用吹き戻
し通路の入口に絞り部を形成するだけなので、大きな改
良を必要とせず、安価に実施できる。
Since the filter air vent passage and the pump blow-back passage are merged in the middle of returning to the fuel tank, and only a throttle section is formed at the inlet of the pump blow-back passage, there is no need for significant improvement and implementation is inexpensive. it can.

なお、請求項2の考案では、燃料噴射ノズル内をオー
バーフローした燃料をフィルタ用エア抜き通路内へ供給
するので、フィルタ用エア抜き通路内をより確実に燃料
で満たすことができて、フィルタ用エア抜き通路を介し
て燃料通路内へエアが吸い込まれることをより確実に抑
制できる。
According to the second aspect of the present invention, the fuel that overflows the fuel injection nozzle is supplied into the filter air vent passage, so that the filter air vent passage can be more reliably filled with fuel, and the filter air vent can be filled. It is possible to more reliably prevent air from being sucked into the fuel passage through the extraction passage.

〈実施例〉 以下、本考案の実施例を図面に基づいて述べる。<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

第1図はディーゼルエンジンの自然流下式燃料供給装
置の概略系統図であって、同燃料供給装置は燃料タンク
1、燃料フィルタ2、燃料噴射ポンプ3及び燃料噴射ノ
ズル14を燃料通路4で順番に接続して構成される。
FIG. 1 is a schematic system diagram of a natural flow type fuel supply device for a diesel engine. In the fuel supply device, a fuel tank 1, a fuel filter 2, a fuel injection pump 3 and a fuel injection nozzle 14 are sequentially arranged in a fuel passage 4. Connected and configured.

即ち、上記燃料タンク1の底面から下向きに燃料フィ
ルタ2を固定配置し、燃料フィルタ2の下方に燃料噴射
ポンプ3を配置し、高位にある燃料タンク1からの落差
により、燃料を燃料フィルタ2→燃料噴射ポンプ3に自
然流下供給可能に構成する。
That is, the fuel filter 2 is fixedly disposed downward from the bottom surface of the fuel tank 1, the fuel injection pump 3 is disposed below the fuel filter 2, and the fuel is removed from the fuel filter 2 by a drop from the fuel tank 1 at a higher position. The fuel injection pump 3 is configured to be capable of being supplied under natural flow.

上記燃料フィルタ2はカップ状のフィルタ本体20に
紙から成るフィルタエレメント21を収容し、フィルタ本
体20に上から蓋体22を嵌着したものである。
In the fuel filter 2, a filter element 21 made of paper is accommodated in a cup-shaped filter body 20, and a lid 22 is fitted to the filter body 20 from above.

上記蓋体22に上向きの燃料入口23と横向きの燃料出口
24を空け、蓋体22の中央部に上向きにエア抜き路25を空
ける。
An upward fuel inlet 23 and a horizontal fuel outlet on the lid 22
24 is opened, and an air vent path 25 is opened upward in the center of the lid 22.

上記燃料フィルタ2を前記燃料噴射ポンプ3に燃料通
路4で接続し、燃料噴射ポンプ3を燃料タンク1の上部
にポンプ吹き戻し通路6で接続する。
The fuel filter 2 is connected to the fuel injection pump 3 via a fuel passage 4, and the fuel injection pump 3 is connected to an upper portion of the fuel tank 1 via a pump blow-back passage 6.

当該ポンプ側の接続構造を詳述すると、燃料噴射ポン
プ3の燃料入口28に燃料供給用接続筒具26を螺合し、接
続筒具26に燃料通路4のポンプ側出口27とポンプ吹き戻
し通路6の入口10とを交叉状に形成し、当該吹き戻し通
路6の入口10に絞り具30を付設し、絞り具30にその上流
側及び下流側より開口断面積を小さく設定した絞り路12
を形成する。
The connection structure on the pump side will be described in detail. A fuel supply connecting tube 26 is screwed into a fuel inlet 28 of the fuel injection pump 3, and the pump side outlet 27 of the fuel passage 4 and the pump blow-back passage are connected to the connecting tube 26. The inlet 10 of the blow-back passage 6 is provided with a throttle device 30 attached thereto, and the throttle device 12 has a narrower opening cross-sectional area than the upstream and downstream sides of the throttle device 30.
To form

この場合、ポンプ吹き戻し通路6から燃料タンク1
に、 燃料噴射ノズル14に供給されなかった余分の燃料が吹
き戻されるとともに、 燃料噴射ポンプ3のエア抜きが行われる。
In this case, the fuel tank 1
Then, the excess fuel not supplied to the fuel injection nozzle 14 is blown back, and the fuel injection pump 3 is evacuated.

また、前記フィルタ用エア抜き通路5の出口7をポン
プ吹き戻し通路6の途中部8に接続し、フィルタ用エア
抜き通路5→途中部8→ポンプ吹き戻し通路6→燃料タ
ンク1にエア抜きが行われる。
Also, the outlet 7 of the filter air vent passage 5 is connected to the middle portion 8 of the pump blow-back passage 6, and the air is vented to the filter air vent passage 5 → the middle portion 8 → the pump blow-back passage 6 → the fuel tank 1. Done.

そこで、本実施例の燃料供給装置の機能を説明する。 Therefore, the function of the fuel supply device of the present embodiment will be described.

ポンプ用吹き戻し通路6の入口10に絞り路12を形成し
たので、燃料噴射ポンプ3内の余剰燃料を絞り部12で積
極的に吹き戻し通路6に押し出すとともに、吹き戻し通
路6に一旦吹き出した燃料の戻りを絞り路12で抑制して
吹き戻し通路6内を燃料で満たしてその容量を増し、燃
料液面を上昇させる。
Since the throttle passage 12 is formed at the inlet 10 of the pump blow-back passage 6, the excess fuel in the fuel injection pump 3 is positively pushed into the blow-back passage 6 by the throttle portion 12, and is once blown into the blow-back passage 6. The return of fuel is suppressed by the throttle path 12, and the inside of the blow-back path 6 is filled with fuel to increase its capacity and raise the fuel level.

一方、フィルタ用エア抜き通路5は、液位の上昇した
ポンプ吹き戻し通路6の途中部8に連通するので、フィ
ルタ用エア抜き通路5内もこの吹き戻し燃料で満たされ
る。
On the other hand, since the filter air vent passage 5 communicates with the middle portion 8 of the pump blow-back passage 6 whose liquid level has risen, the inside of the filter air vent passage 5 is also filled with this blow-back fuel.

この結果、燃料フィルタ2の目詰まりや、外気温の低
下による燃料の粘性の増大で、燃料フィルタ2が燃料タ
ンク1に対して負圧に傾いても、燃料フィルタ2がフィ
ルタ用エア抜き通路5からエアを吸い込むことはなく、
燃料を燃料噴射ポンプ3及び噴射ノズル14にスムーズに
供給できる。
As a result, even if the fuel filter 2 is inclined to a negative pressure with respect to the fuel tank 1 due to clogging of the fuel filter 2 or increase in the viscosity of the fuel due to a decrease in the outside air temperature, the fuel filter 2 remains in the filter air vent passage 5. Without sucking air from
The fuel can be smoothly supplied to the fuel injection pump 3 and the injection nozzle 14.

他方、第2図に示す従来技術では、ディーゼルエンジ
ンEに付設した各燃料噴射ノズル14をノズル用戻し通路
15で燃料タンク1に接続し、燃料噴射ノズル14の余剰燃
料を燃料タンク1に戻すように構成していた。
On the other hand, in the prior art shown in FIG. 2, each fuel injection nozzle 14 attached to the diesel engine E is connected to a nozzle return passage.
The fuel injection nozzle 14 is connected to the fuel tank 1 at 15 and excess fuel from the fuel injection nozzle 14 is returned to the fuel tank 1.

しかしながら、第1図の仮想線で示すように、このノ
ズル用戻し通路15の出口16を前記ポンプ吹き戻し通路6
の途中部16(上記フィルタ用エア抜き通路5が接続する
途中部8より燃料噴射ポンプ3寄りの部位)に連通する
と、 燃料噴射ノズル14内のオーバフロー燃料を、ノズル用
戻し通路15を介してポンプ用吹き戻し通路6に還流し
て、フィルタ用エア抜き通路5に燃料を一層確実に案内
することができるので、フィルタ用エア抜き管5内は燃
料で満たされてエアの吸い込みをより確実に防止でき
る。
However, as shown by the imaginary line in FIG. 1, the outlet 16 of the nozzle return passage 15 is connected to the pump blowback passage 6.
Communicates with the middle portion 16 of the fuel injection nozzle 3 (a portion closer to the fuel injection pump 3 than the middle portion 8 where the filter air vent passage 5 is connected), the overflow fuel in the fuel injection nozzle 14 is pumped through the nozzle return passage 15. The fuel is returned to the air blow-back passage 6 and the fuel can be more reliably guided to the filter air vent passage 5, so that the inside of the filter air vent tube 5 is filled with fuel and air suction is more reliably prevented. it can.

尚、本考案では、フィルタ用エア抜き通路5とポンプ
用吹き戻し通路6とのいずれか一方の出口7を他方の途
中部8に接続すれば良いので、フィルタ用エア抜き通路
5の一端を燃料タンク1に接続し、ポンプ吹き戻し通路
6の出口を当該フィルタ用エア抜き通路5の途中部に連
通しても良い。
In the present invention, one of the outlets 7 of the filter air vent passage 5 and the pump blow-back passage 6 may be connected to the other intermediate portion 8, so that one end of the filter air vent passage 5 is connected to the fuel vent passage 5. It may be connected to the tank 1, and the outlet of the pump blow-back passage 6 may be communicated with an intermediate portion of the filter air vent passage 5.

また、ノズル用戻し通路15の出口16は、上記実施例に
限らず、フィルタ用エア抜き通路5の側に接続しても差
し支えない。
Further, the outlet 16 of the nozzle return passage 15 is not limited to the above embodiment, and may be connected to the filter air vent passage 5.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本考案の実施例を示すディーゼルエンジンの自
然流下式燃料供給装置の概略系統図、第2図は従来技術
を示す第1図相当図である。 1……燃料タンク、2……燃料フィルタ、3……燃料噴
射ポンプ、4……燃料通路、5……フィルタ用エア抜き
通路、6……ポンプ用吹き戻し通路、7……5又は6の
出口、8……5又は6の途中部、10……6の入口、12…
…絞り部、14……燃料噴射ノズル、15……ノズル用戻し
通路、16……15の出口、24……2の燃料出口。
FIG. 1 is a schematic system diagram of a naturally flowing fuel supply device for a diesel engine showing an embodiment of the present invention, and FIG. 2 is a diagram corresponding to FIG. 1 showing a prior art. DESCRIPTION OF SYMBOLS 1 ... fuel tank, 2 ... fuel filter, 3 ... fuel injection pump, 4 ... fuel passage, 5 ... filter air vent passage, 6 ... pump backflow passage, 7 ... 5 or 6 Exit, 8 ... Midway of 5 or 6, 10 ... 6 Entrance, 12 ...
... Throttle section, 14 ... Fuel injection nozzle, 15 ... Return passage for nozzle, 16 ... 15 Exit, 24 ... 2 Fuel exit.

Claims (2)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】燃料タンク(1)の下方に燃料フィルタ
(2)と燃料噴射ポンプ(3)とを配置し、燃料通路
(4)によって上記燃料タンク(1)から上記燃料フィ
ルタ(2)と上記燃料噴射ポンプ(3)との順に燃料自
然流下供給可能に接続し、 上記燃料フィルタ(2)の燃料出口(24)側をフィルタ
用エア抜き通路(5)で上記燃料タンク(1)にエア抜
き可能に構成し、 上記燃料噴射ポンプ(3)をポンプ用吹き戻し通路
(6)で上記燃料タンク(1)にエア抜き及び燃料吹き
戻し可能に構成したディーゼルエンジンの自然流下式供
給装置において、 上記フィルタ用エア抜き通路(5)と上記ポンプ用吹き
戻し通路(6)とのいずれか一方の出口(7)を他方の
途中部(8)に接続し、 上記ポンプ用吹き戻し通路(6)の入口(10)に絞り部
(12)を形成したことを特徴とするディーゼルエンジン
の自然流下式供給装置。
1. A fuel filter (2) and a fuel injection pump (3) are arranged below a fuel tank (1), and the fuel filter (2) is separated from the fuel tank (1) by a fuel passage (4). The fuel injection pump (3) is connected in such a manner as to be able to supply the fuel under natural flow, and the side of the fuel outlet (24) of the fuel filter (2) is supplied to the fuel tank (1) through a filter air vent passage (5). In the natural flow type supply device for a diesel engine, the fuel injection pump (3) is configured to be capable of bleeding, and the fuel injection pump (3) is configured to be capable of bleeding air and returning fuel to the fuel tank (1) through a pump blow-back passage (6). One of the outlets (7) of the filter air vent passage (5) and the pump blow-back passage (6) is connected to the other intermediate portion (8), and the pump blow-back passage (6) At the entrance (10) Natural flow type supply device for a diesel engine, characterized in that Ri portion forming a (12) was.
【請求項2】燃料噴射ノズル(14)から導出したノズル
用戻し通路(15)の出口(16)を前記フィルタ用エア抜
き通路(5)と前記ポンプ用吹き戻し通路(6)とのい
ずれか一方に接続したことを特徴とする請求項1に記載
のディーゼルエンジンの自然流下式供給装置。
2. An outlet (16) of a nozzle return passage (15) derived from a fuel injection nozzle (14) is connected to one of the filter air vent passage (5) and the pump blowback passage (6). The natural-flow-type supply device for a diesel engine according to claim 1, wherein the supply device is connected to one side.
JP1990059949U 1990-06-05 1990-06-05 Natural flow type fuel supply system for diesel engine Expired - Lifetime JP2524675Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990059949U JP2524675Y2 (en) 1990-06-05 1990-06-05 Natural flow type fuel supply system for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990059949U JP2524675Y2 (en) 1990-06-05 1990-06-05 Natural flow type fuel supply system for diesel engine

Publications (2)

Publication Number Publication Date
JPH0419659U JPH0419659U (en) 1992-02-19
JP2524675Y2 true JP2524675Y2 (en) 1997-02-05

Family

ID=31586902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990059949U Expired - Lifetime JP2524675Y2 (en) 1990-06-05 1990-06-05 Natural flow type fuel supply system for diesel engine

Country Status (1)

Country Link
JP (1) JP2524675Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4565785B2 (en) * 2000-09-20 2010-10-20 株式会社ミクニ FUEL SUPPLY DEVICE AND FUEL FILTER USED FOR THE FUEL SUPPLY DEVICE
WO2002025095A1 (en) * 2000-09-20 2002-03-28 Mikuni Corporation Fuel feeding device and fuel filter used for the device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096829A (en) * 1983-10-31 1985-05-30 Iseki & Co Ltd Primary air volume correcting device for gasification burner

Also Published As

Publication number Publication date
JPH0419659U (en) 1992-02-19

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