CN201170148Y - Fuel tank of electric control fuel injection engine - Google Patents
Fuel tank of electric control fuel injection engine Download PDFInfo
- Publication number
- CN201170148Y CN201170148Y CNU2008200819304U CN200820081930U CN201170148Y CN 201170148 Y CN201170148 Y CN 201170148Y CN U2008200819304 U CNU2008200819304 U CN U2008200819304U CN 200820081930 U CN200820081930 U CN 200820081930U CN 201170148 Y CN201170148 Y CN 201170148Y
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- fuel
- oil
- fuel tank
- deaerator
- mouth
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Abstract
A fuel tank for an electric control fuel injection engine comprises a fuel tank body (1), and a fuel switch valve (3) and an oil-gas separator (5) arranged on the fuel tank body (1). The fuel tank is characterized in that the oil-gas separator (5) is fixed on the bottom (2) of the fuel tank body (1), a main body of the oil-gas separator (5) is positioned inside the fuel tank body (1), the lower part of the oil-gas separator (8) is extended downwardly out of the bottom (2) of the fuel tank body (1), and a fuel outlet spigot joint (10) for supplying fuel for a fuel injector or a fuel injection pump (9) and a fuel return spigot joint (11) for receiving fuel from the fuel injector or the fuel injection pump (9) are arranged on the lower part (8). The fuel tank has a beautiful appearance without the impact from the oil-gas separator. The oil-gas separator can effectively prevent the problem of the air lock of a low pressure oil circuit. In addition, two levels of fuel filtration devices are arranged on the oil circuit to improve the working reliability and stability of a fuel injection system.
Description
Technical field
The utility model belongs to the electronic fuel injection technical field of engines, is specifically related to a kind of fuel tank, and especially utilizing the fuel tank position height is the fuel tank of the electronic fuel injection motor of petrolic pulse pressurized jet.
Background technique
The electronic fuel injection technology is control motor (comprising petrol engine and diesel engine) noxious gas emission and improves one of major technique of engine performance.Automobile and motorcycle equal power device are used the electronic fuel injection technology can reduce its noxious gas emission significantly, and improves its performance, reduces its fuel consume.Existing engine electric control fuel oil spraying system adopts oil sprayer or fuel pump to add spray nozzle device to spray into the fuel oil pressurization in the cylinder or in the gas handling system, in order to guarantee the ejecting system stable operation, generally allow system enough oil return flows be arranged to get rid of the bubble in the oil circuit.In the built-in fuel pump system of fuel tank, oil return is owing to the driving that is subjected to fuel pump has very strong fluid ability, can directly get back to fuel tank, like this because fuel tank itself has very strong liquefied gas separating power, so deaerator need not be set in addition.But in this system, the outside oil circuit of fuel tank will bear pressure, and can bring other problems owing to place fuel pump in some occasion fuel tank, for example can bring difficulty to the design of fuel tank on motorcycle.Therefore the system that fuel pump is placed on fuel tank is also arranged, for example the Japan Patent spy opens 2003-83192, and the pulse pressurization fuel oil sparger that adopts linear electromagnetic pump principle, for example Chinese patent ZL01103954.X.In this type systematic, can adopt the low pressure oil supply oil pump, also can rely on potential difference that the fuel tank position height forms with the fuel delivery of fuel tank to injection fuel pump or fuel injector, but fuel tank is very big to the influence of the bubble accumulation situation in the low pressure oil circuit of oil-fired system to the layout of the fuel pipe of injection fuel pump or fuel injector, if it is improper to arrange, can form vapour lock because of bubble.
Chinese patent ZL200320124590.6 discloses a kind of mechanism, the exhaust bulb apparatus of getting rid of the bubble in fuel injector or fuel oil injectionpump and the low-voltage fuel pipeline promptly is set in fuel tank, its position is higher than fuel injector or injection fuel pump, be positioned at the belly of fuel tank, return tube interface direct by pipeline and on fuel injector or the fuel oil injectionpump is connected, or is connected with the Oil-gas Separation chamber that is being connected fuel injector or fuel oil injectionpump.Chinese patent ZL200520100319.8 discloses a kind of fuel tank, further the Oil-gas Separation chamber is arranged on the fuel tap.
But it is bigger that above-mentioned existing gas and oil separating plant is in the following and size of fuel tank, and the exhaust bulb apparatus is in the belly of fuel tank, connects the two the long fuel tank outside that is in again of pipeline, and aesthetic property, producibility and reliability are desirable not to the utmost.The most debatable is that gas and oil separating plant is less with respect to the height potential of fuel injector or fuel oil injectionpump, there is bubble just may make fuel supply flow rate and pressure too small and cause fuel injector or fuel oil injectionpump to suck gas slightly, working stability is affected, if install fuel filter additional, because filter cleaner has bigger resistance, particularly when having bubble in the oil circuit, filter cleaner has very big resistance to bubble, will make this problem more serious.
Summary of the invention
The purpose of this utility model is to solve the Layout Problem of gas and oil separating plant on fuel tank, to improve the height potential of gas and oil separating plant with respect to fuel injector or fuel oil injectionpump, it is more thorough reliable that the oil circuit bubble is got rid of, aesthetic property and producibility are further improved, fuel filter be can also install easily additional, fuel injector or fuel oil injectionpump reliable and stable work guaranteed.
This purpose is to reach by following technical characteristics, that is: the fuel tank of this electronic fuel injection motor, comprise that fuel tank body, fuel tank body are provided with fuel tap valve, deaerator, this deaerator is fixed on the bottom of fuel tank body, the main body of deaerator is positioned at the fuel tank body, its underpart is stretched out the bottom downwards, and this is external to fuel tank, and the bottom is provided with the fuel-displaced oil return that connects mouth and receive from the oil return of fuel injector or fuel oil injectionpump that provides fuel oil for fuel injector or fuel oil injectionpump and connects mouth.
The fuel tank of the utility model, deaerator and fuel tap valve are independent fully, and its major part is in fuel tank inside, do not need to connect the exhaust gas bubble pipe road, the part of having only the bottom need arrange that fuel-displaced and oil return etc. connects mouth exposes, and is therefore minimum, attractive in appearance to fuel tank shape-designing influence; What is more important, it is very near apart from the fuel tank bottom that fuel-displaced and oil return connects mouth, thereby enough height potentials are arranged with respect to fuel injector or fuel oil injectionpump, make the bubble in the low pressure line be difficult for being accumulated to the degree that influences fuel injector or fuel oil injectionpump stable operation, and the cooling that deaerator is subjected to other fuel oils of fuel tank can make fuel-steam liquefaction, thereby the vapour lock problem that can effectively prevent the low pressure oil circuit takes place.
To further improvement of the utility model or qualification, provide at the characteristic of dependent claims.
The cross-section area of the inner chamber of described deaerator is must be enough big, and for example internal diameter is greater than the circular cylindrical tubular container of 6mm, thereby the assurance liquids and gases can rely on gravity and buoyancy natural separation therein; Described deaerator open top is in order to guarantee when fuel tap cuts off the fuel oil in fuel tank supply near the extreme higher position of fuel tank inner chamber, most fuel oils in the fuel tank can not flow out from deaerator, thereby make things convenient for the maintenance of oil-fired system, guaranteed that also in case of emergency fuel oil is unlikely to leak in a large number from deaerator, improved Security;
The described fuel-displaced mouth that connects is positioned at the below of deaerator and vertically downward, and described oil return connects a distance, top that mouth is positioned at the deaerator bottom surface, the above position of 10mm for example, and direction is a level or oblique following, thereby guarantees that as far as possible the bubble in the oil return can not sucked the fuel-displaced mouth that connects immediately;
Connect in described oil return and between mouth and the deaerator bottom surface fuel feeding to be set and to connect mouth, its direction is a level, it is connected to the oil outlet of described fuel tap valve by a fuel supply line, thereby give the used up fuel oil of deaerator supply motor, when described fuel tap valve cuts out, with the supplying fuel that cuts off from fuel tank;
Give the pipeline of the used up fuel oil of deaerator supply motor, can not connect mouth by the fuel feeding that on deaerator, is provided with yet, and adopt a three-way pipe, two of described three-way pipe connect mouth and connect the oil outlet of fuel tap valve and the fuel-displaced mouth that connects of deaerator respectively, and another of described three-way pipe connects mouth and provide fuel oil for fuel injector or fuel oil injectionpump;
In order to guarantee the functional reliability of fuel injection system, must guarantee that the fuel oil that enters fuel injector or fuel oil injectionpump does not contain solid impurity, and the fuel oil in the fuel tank is because a variety of causes, it is unavoidable wherein to contain impurity such as iron rust, therefore described elementary filter screen must be set, a paper oil filter preferably be set again as the fuel oil fine-filtering device.Described elementary filter screen can be positioned on the fuel tap valve and be deep into fuel tank inside, and when the fuel tap valve was not fixed on the fuel tank, described elementary filter screen also can be connected between fuel tank lower body and the fuel tap valve by oil pipe string;
Described paper oil filter can be arranged on the described fuel tap valve, also can be arranged on the fuel-displaced dirty position that connects mouth of described deaerator, connect by oil pipe, so both can guarantee the fuel cleaning effect, also can not influence in the oil return system bubble to the discharge of deaerator.
The advantage of the fuel tank of the utility model is, deaerator is set can exert an influence to the fuel tank shape-designing, and is attractive in appearance; Make the bubble in the low pressure line be difficult for accumulation, the good cooling results of deaerator, fuel-steam separates liquefaction easily, thus the vapour lock problem that can effectively prevent the low pressure oil circuit takes place; The fuel oil of deaerator can only come from the fuel tap valve, thereby makes things convenient for the maintenance of oil-fired system, improves Security; Two-stage fuel cleaning device can be set, and bubble can ensure that the fuel oil that enters fuel injector or fuel oil injectionpump is clean fuel oil in the oil return system under the prerequisite of the discharge of deaerator not influencing.
Description of drawings
Fig. 1 schematically illustrates first embodiment of the utility model.
Fig. 2 schematically illustrates second embodiment of the utility model.
Fig. 3 schematically illustrates the 3rd embodiment of the utility model.
Fig. 4 schematically illustrates the 4th embodiment of the utility model.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.
According to shown in Figure 1, the fuel tank of the electronic fuel injection motor of the utility model, comprise fuel tank body 1, fuel tap valve 3, elementary filter screen 4, deaerator 5 etc., described deaerator 5 is the circular cylindrical tubular container of an inner diameter d greater than 6mm, be fixed on fuel tank bottom 2, the main body of deaerator 5 is positioned at fuel tank body 1.Fuel tap valve 3 and deaerator 5 are positioned at the same side of fuel tank, and fuel tap valve 3 also is fixed on the fuel tank bottom 2 of fuel tank, and elementary filter screen 4 is positioned on the fuel tap valve 3 and is deep into fuel tank inside.The open top 7 of deaerator 5 is near the extreme higher position of fuel tank inner chamber, be that distance A is not more than 50mm, its underpart 8 is stretched out bottom 2 downwards to fuel tank body 1, bottom 8 is provided with the fuel-displaced oil return that connects mouth 10 and receive from the oil return of fuel injector or fuel oil injectionpump 9 that provides fuel oil for fuel injector or fuel oil injectionpump 9 and connects mouth 11, the fuel-displaced mouth 10 that connects is positioned at the below of deaerator 5 and vertically downward, and connecing mouth 11, oil return is positioned at the top of deaerator bottom surface 12 apart from the B place, B is at 10～40mm, and direction is oblique following.Connect in oil return and to be provided with fuel feeding between mouth 11 and the deaerator bottom surface 12 and to connect mouth 13, its direction is a level, and an end of fuel supply line 6 connects described fuel feeding and connects mouth 13, and the other end connects the oil outlet 14 of fuel tap valve 3.
Embodiment 2: as shown in Figure 2, difference from Example 1 is: the paper oil filter 15 of connecting in the described fuel supply line 6.
As shown in Figure 3, difference from Example 1 is: described fuel tap valve 3 separates with fuel tank body 1, link to each other with fuel oil supply nozzle 22 on the fuel tank bottom 2 by oil pipe 21 and elementary filter screen 4, paper oil filter 15 is connected in the oil outlet 14 of fuel supply line 6 and fuel tap valve 3, the other end of fuel supply line 6 is connected on the three-way pipe 18, the fuel-displaced mouth 10 that connects of deaerator 5 also is connected on the three-way pipe 18 by oil pipe, and the 3rd of three-way pipe 18 connects mouth as the new fuel-displaced mouth 10 ' that connects that fuel oil is provided for fuel injector or fuel oil injectionpump 9.In addition, in the present embodiment, the bottom of deaerator 5 does not have fuel feeding to connect mouth 13.
As shown in Figure 4, difference from Example 1 is: described fuel tap valve 3 separates with fuel tank body 1, link to each other with fuel oil supply nozzle 22 on the fuel tank bottom 2 by oil pipe 21 and elementary filter screen 4, paper oil filter 15 is connected fuel-displaced connecing on the mouth 10, and fuel oil is given fuel injector or fuel oil injectionpump 9 fuel feeding through described paper oil filter 15.
Claims (10)
1, a kind of fuel tank of electronic fuel injection motor, comprise fuel tank body (1), fuel tank body (1) is provided with fuel tap valve (3), deaerator (5), it is characterized in that, described deaerator (5) is fixed on the bottom (2) of fuel tank body (1), the main body of deaerator (5) is positioned at fuel tank body (1) inner chamber, its underpart (8) is stretched out bottom (2) downwards to fuel tank body (1), and bottom (8) are provided with to what fuel injector or fuel oil injectionpump (9) provided fuel oil and fuel-displacedly connect mouth (10) and reception and connect mouth (11) from the oil return of the oil return of fuel injector or fuel oil injectionpump (9).
2, the fuel tank of electronic fuel injection motor according to claim 1, it is characterized in that, the main body of described deaerator (5) is the circular cylindrical tubular container of an inner diameter d greater than 6mm, and its open top (7) is near the extreme higher position of fuel tank body (1) inner chamber.
3, the fuel tank of electronic fuel injection motor as claimed in claim 1 or 2, it is characterized in that, the described fuel-displaced mouth (10) that connects is positioned at the bottom surface (12) of deaerator bottom (8) and vertically downward, and oil return connects the sidewall that mouth (11) is positioned at top, deaerator bottom surface (12) certain distance, and direction is a level or oblique following.
4, as the fuel tank of electronic fuel injection motor as described in the claim 3, it is characterized in that, connect in described oil return and to be provided with fuel feeding between mouth (11) and the described deaerator bottom surface (12) and to connect mouth (13), this fuel feeding connects mouth (13) and is connected with fuel tap valve (3) by fuel supply line (6).
5, as the fuel tank of electronic fuel injection motor as described in the claim 4, it is characterized in that the paper oil filter (15) of in described fuel supply line (6), connecting.
6, as the fuel tank of electronic fuel injection motor as described in the claim 4, it is characterized in that, have paper oil filter (15) on the described fuel tap valve (3), and elementary filter screen (4).
7, as the fuel tank of electronic fuel injection motor as described in the claim 3, it is characterized in that, the fuel-displaced mouth (10) that connects of the oil outlet (14) of fuel tap valve (3) and deaerator (5) is connected on the three-way pipe (18) by oil pipe respectively, and another of three-way pipe (18) connects mouth as the new fuel-displaced mouth (10 ') that connects that fuel oil is provided for fuel injector or fuel oil injectionpump (9).
8, as the fuel tank of electronic fuel injection motor as described in the claim 3, it is characterized in that,, connect a paper oil filter (15) described fuel-displaced connecing on the mouth (10).
9, as the fuel tank of electronic fuel injection motor as described in the claim 3, it is characterized in that, described fuel tap valve (3) and deaerator (5) are positioned at the same side of fuel tank body (1), fuel tap valve (3) also is fixed on the bottom (2) of fuel tank body (1), fuel tap valve (3) is provided with elementary filter screen (4) and is deep into fuel tank inside, and has paper oil filter (15).
10, as the fuel tank of electronic fuel injection motor as described in the claim 3, it is characterized in that described fuel tap valve (3) separates with fuel tank body (1), link to each other with fuel oil supply nozzle (22) on the fuel tank bottom (2) by oil pipe (21) and elementary filter screen (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200819304U CN201170148Y (en) | 2008-01-09 | 2008-01-09 | Fuel tank of electric control fuel injection engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200819304U CN201170148Y (en) | 2008-01-09 | 2008-01-09 | Fuel tank of electric control fuel injection engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170148Y true CN201170148Y (en) | 2008-12-24 |
Family
ID=40209201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200819304U Expired - Fee Related CN201170148Y (en) | 2008-01-09 | 2008-01-09 | Fuel tank of electric control fuel injection engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170148Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835845A (en) * | 2012-11-22 | 2014-06-04 | 沈家企业股份有限公司 | Fuel oil supply device and oil return three-way pipe therein |
| CN106050362A (en) * | 2016-07-29 | 2016-10-26 | 重庆凯龙科技有限公司 | Fuel switch |
| CN107201976A (en) * | 2017-06-30 | 2017-09-26 | 徐州徐工挖掘机械有限公司 | Novel diesel engine low pressure diesel oil feed line Quick air-discharge system |
-
2008
- 2008-01-09 CN CNU2008200819304U patent/CN201170148Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835845A (en) * | 2012-11-22 | 2014-06-04 | 沈家企业股份有限公司 | Fuel oil supply device and oil return three-way pipe therein |
| CN106050362A (en) * | 2016-07-29 | 2016-10-26 | 重庆凯龙科技有限公司 | Fuel switch |
| CN107201976A (en) * | 2017-06-30 | 2017-09-26 | 徐州徐工挖掘机械有限公司 | Novel diesel engine low pressure diesel oil feed line Quick air-discharge system |
| CN107201976B (en) * | 2017-06-30 | 2023-10-03 | 徐州徐工挖掘机械有限公司 | Novel low-pressure diesel oil supply pipeline rapid exhaust system of diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20120109 |