CN103225574A - Engine fuel system - Google Patents
Engine fuel system Download PDFInfo
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- CN103225574A CN103225574A CN2013101303172A CN201310130317A CN103225574A CN 103225574 A CN103225574 A CN 103225574A CN 2013101303172 A CN2013101303172 A CN 2013101303172A CN 201310130317 A CN201310130317 A CN 201310130317A CN 103225574 A CN103225574 A CN 103225574A
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- fuel
- tank
- fuel tank
- engine
- main fuel
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Abstract
The embodiment of the invention discloses an engine fuel system which comprises a main fuel tank at the bottom of an engine and an auxiliary fuel tank at the top of the engine, wherein the main fuel tank is connected with the auxiliary fuel tank through a fuel delivery pipe and an electric fuel delivery pump; the auxiliary fuel tank is connected with a fuel injection pump through a fuel feed pipe; and the fuel injection pump is connected with the main fuel tank through a fuel return pipe. The engine fuel system provided by the embodiment of the invention has the advantages as follows: through the two fuel tanks at the top and the bottom, the problems that a fuel tank cannot be arranged at the top due to overlarge capacity and a fuel tank arranged at the bottom can cause unexpected shutdown due to insufficient fuel supply are solved; and as fuel is supplied to the auxiliary fuel tank by the main fuel tank, and redundant fuel of the fuel injection pump is guided into the main fuel tank through the fuel return pipe, the problem of overhigh fuel return pressure caused when only a top fuel tank is adopted in the prior art is solved.
Description
Technical field
The present invention relates to engine art, relate in particular to a kind of engine fuel oil system.
Background technique
Small-sized air-cooled generator set will be applied to the communications field, need do bigger improvement and raising at aspects such as automatically control, rainproof, noise reduction, non-maintaining intervals.Strengthening Capacity of the fuel tank, improving oil-fired system is one of content that prolongs service intervals.
Fig. 1 is the structural representation of oil-fired system of the generator set of prior art one, and as shown in Figure 1, the generator set of the prior art is with fuel tank 10 overheads, and by gravity feed oil, motor does not have the low pressure oil transfer pump.And because the mailbox top set, reservoir capacity has only 15L, and the unit continuous operating time is no more than 12h under the declared working condition, with service intervals 125h big gap is arranged.In addition, it is higher that the fuel tank top set can cause the fuel tank return pressure.
Fig. 2 is the structural representation of oil-fired system of the generator set of prior art two, and as shown in Figure 2, in the prior art, the fuel tank 20 that strengthens of Fig. 1 is arranged in the bottom of whole unit relatively.Thus, solved the little problem of capacity of prior art one intermediate fuel oil case overhead, still, prior art two places the unit bottom still to have following defective fuel tank: 1) when ambient temperature is higher, can cause hang-up because of fuel feeding is not enough; 2) fuel tank is too big, can not top set.
Summary of the invention
The embodiment of the invention provides a kind of engine fuel oil system, can make fuel tank fuel feeding abundance, and reduces tank drainback pressure, and can make fuel tank top set can be positioned at the bottom again.
First aspect present invention provides a kind of engine fuel oil system, it is characterized in that, comprising:
Be positioned at the main fuel tank and the drop tank that is positioned at described motor top of motor bottom;
Described main fuel tank links to each other with described drop tank with electrically operated fuel pump by transport pipe;
Described drop tank links to each other with Injection Pump by fuel supply line;
Described Injection Pump links to each other with described main fuel tank by return tube.
In first kind of possible implementation, also be connected with spill pipe between described drop tank and the described main fuel tank.
In conjunction with first kind of possible implementation, in second kind of possible implementation, described spill pipe and described return tube converge the back and insert described main fuel tank in described main fuel tank outside.
To second kind of first aspect possible implementation, in the third possible implementation, described main fuel tank and/or described drop tank are provided with vent in conjunction with first aspect.
To second kind of first aspect possible implementation, in the 4th kind of possible implementation, described fuel supply line forms a loop by an outlet pipe and described drop tank in conjunction with first aspect.
To second kind of first aspect possible implementation, in the 5th kind of possible implementation, also be connected with a fuel filter on the described fuel supply line in conjunction with first aspect.
To second kind of first aspect possible implementation, in the 6th kind of possible implementation, on the described main fuel tank oil filler is set in conjunction with first aspect.
To second kind of first aspect possible implementation, in the 7th kind of possible implementation, in the described main fuel tank fuel level sensor is set in conjunction with first aspect
Therefore in possible implementation more of the present invention, engine fuel oil system comprises: the main fuel tank and the drop tank that is positioned at described motor top that are positioned at the motor bottom; Described main fuel tank links to each other with described drop tank with electrically operated fuel pump by transport pipe; Described drop tank links to each other with Injection Pump by fuel supply line; Described Injection Pump links to each other with described main fuel tank by return tube.Thus; the embodiment of the invention can solve excessive and the problem that can not top set of reservoir capacity by two fuel tanks in top and bottom; and fuel tank bottom set; and problem because of the not enough hang-up that causes of fuel feeding; and the embodiment of the invention is given the drop tank fuel feeding by main fuel tank, and draws by the return tube oil that Injection Pump is unnecessary and to get back to main fuel tank; thus, can solve that prior art only has the top set mailbox and the higher problem of return pressure that causes.
Description of drawings
Fig. 1 is the structural representation of oil-fired system of the generator set of prior art one.
Fig. 2 is the structural representation of oil-fired system of the generator set of prior art two.
Fig. 3 is that an embodiment's of engine fuel oil system of the present invention structure is formed schematic representation.
Fig. 4 is that another embodiment's of engine fuel oil system of the present invention structure is formed schematic representation.
Fig. 5 is that another embodiment's of engine fuel oil system of the present invention structure is formed schematic representation.
Fig. 6 is that another embodiment's of engine fuel oil system of the present invention structure is formed schematic representation.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 3 is that an embodiment's of engine fuel oil system of the present invention structure is formed schematic representation.As shown in Figure 3, the oil-fired system of the embodiment of the invention can comprise: be positioned at the main fuel tank 30 of motor bottom, the drop tank 31 that is positioned at the motor top, Injection Pump 32, wherein, described main fuel tank 30 links to each other with drop tank 31 with electrically operated fuel pump 34 by transport pipe 33, drop tank 31 links to each other with Injection Pump 32 by fuel supply line 35, Injection Pump 32 links to each other with main fuel tank by return tube 36, thus, constituted the path of a fuel feeding and backflow.In the specific implementation, when electrically operated fuel pump 34 starts and starts working, fuel oil then can spray into the firing chamber by oil sprayer at last from main fuel tank 30 through transport pipe 33, electrically operated fuel pump 34, drop tank 31, fuel supply line 35, Injection Pump 32.On the other hand, unnecessary fuel oil flows back to main fuel tank 30 through return tube 36 in the engine fuel injector.This shows; in the present embodiment; can solve excessive and the problem that can not top set of reservoir capacity by two fuel tanks in top and bottom; and the fuel tank bottom set, and the problem of the hang-up that causes because of fuel feeding is not enough, simultaneously; the embodiment of the invention is given the drop tank fuel feeding by main fuel tank; and draw by the return tube oil that Injection Pump is unnecessary and to get back to main fuel tank, thus, can solve that prior art only has the top set mailbox and the higher problem of return pressure that causes.
Further, Fig. 4 is another embodiment's of an engine fuel oil system of the present invention structure composition schematic representation.As shown in Figure 4, the oil-fired system of the embodiment of the invention also is connected with spill pipe 37 between drop tank 31 and main fuel tank 30 on the basis of structure shown in Figure 3.Like this, when the flow of electrically operated fuel pump 34 made drop tank 31 fuel oils too much greater than engine fuel consumption, drop tank 31 unnecessary fuel oils can flow back to main fuel tank 30 through spill pipe 37.In the specific implementation, spill pipe 37 when flowing back to main fuel tank 30, can be earlier and reflow pipe 36 converge the back and insert main fuel tank 30, in the specific implementation, spill pipe 37 and reflow pipe 36 also can independently flow back to main fuel tank 30 certainly.
Further, Fig. 5 is another embodiment's of an engine fuel oil system of the present invention structure composition schematic representation.As shown in Figure 5, the oil-fired system of the embodiment of the invention makes fuel supply line 35 form a loop by an outlet pipe 38 and described drop tank 31 on the basis of Fig. 3 or structure shown in Figure 4, and main fuel tank 30 and/or described drop tank 31 are provided with vent 39.Like this, the air in main fuel tank 30, drop tank 31 and the fuel supply line 35 just can be discharged by outlet pipe 38 and vent 39, but makes thus and reduce the fuel tank automatic vent because air pressure causes fuel tank to start the difficulty or the unsettled probability that turns round.In addition, present embodiment also is connected with a fuel filter 40 on fuel supply line 35.
Further, Fig. 6 is another embodiment's of an engine fuel oil system of the present invention structure composition schematic representation.As shown in Figure 6, the oil-fired system of the embodiment of the invention is provided with oil filler 41 and fuel level sensor 42 is set in main fuel tank on the basis of structure shown in Figure 5 on the main fuel tank, solve whole oil-fired system fuel feeding and oil mass monitoring problem thus.
More than cited only be preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (8)
1. an engine fuel oil system is characterized in that, comprising:
Be positioned at the main fuel tank and the drop tank that is positioned at described motor top of motor bottom;
Described main fuel tank links to each other with described drop tank with electrically operated fuel pump by transport pipe;
Described drop tank links to each other with Injection Pump by fuel supply line;
Described Injection Pump links to each other with described main fuel tank by return tube.
2. engine fuel oil system as claimed in claim 1 is characterized in that, also is connected with spill pipe between described drop tank and the described main fuel tank.
3. engine fuel oil system as claimed in claim 2 is characterized in that, described spill pipe and described return tube converge the back and insert described main fuel tank in described main fuel tank outside.
4. as each described engine fuel oil system among the claim 1-3, it is characterized in that described main fuel tank and/or described drop tank are provided with vent.
5. as each described engine fuel oil system among the claim 1-3, it is characterized in that described fuel supply line forms a loop by an outlet pipe and described drop tank.
6. as each described engine fuel oil system among the claim 1-3, it is characterized in that, also be connected with a fuel filter on the described fuel supply line.
7. as each described engine fuel oil system among the claim 1-3, it is characterized in that, on the described main fuel tank oil filler is set.
8. as each described engine fuel oil system among the claim 1-3, it is characterized in that, in the described main fuel tank fuel level sensor is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101303172A CN103225574A (en) | 2013-04-15 | 2013-04-15 | Engine fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101303172A CN103225574A (en) | 2013-04-15 | 2013-04-15 | Engine fuel system |
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| Publication Number | Publication Date |
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| CN103225574A true CN103225574A (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101303172A Pending CN103225574A (en) | 2013-04-15 | 2013-04-15 | Engine fuel system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727993A (en) * | 2015-03-16 | 2015-06-24 | 南车戚墅堰机车有限公司 | Collection device for return oil of oil injection pump |
| CN105221212A (en) * | 2015-10-16 | 2016-01-06 | 华为技术有限公司 | Motor oil-supplementing system and oil supplement method thereof |
| CN107215204A (en) * | 2017-07-24 | 2017-09-29 | 江铃汽车股份有限公司 | Automobile double fuel tank connectivity structure |
| CN111102111A (en) * | 2019-12-27 | 2020-05-05 | 南京金城机械有限公司 | Continuous oil supply mechanism, fuel oil supply device and oil supply method for electronic fuel injection engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202578985U (en) * | 2012-06-04 | 2012-12-05 | 上汽依维柯红岩商用车有限公司 | Two-fuel-tank fuel supply system of heavy truck |
| CN202707319U (en) * | 2012-08-02 | 2013-01-30 | 中国第一汽车股份有限公司 | Pump-pipe-valve-pipe-mouth fuel oil injection system |
| CN202746307U (en) * | 2012-08-04 | 2013-02-20 | 龙工（上海）挖掘机制造有限公司 | Hydraulic auxiliary fuel tank for engineering machinery |
| CN202811139U (en) * | 2012-09-11 | 2013-03-20 | 南车青岛四方机车车辆股份有限公司 | Fuel oil supply system for railway air-conditioned power generation train |
| CN102996304A (en) * | 2013-01-06 | 2013-03-27 | 云南云岭高速公路桥梁工程有限公司 | Engineering machinery fuel oil pre-filtering device |
-
2013
- 2013-04-15 CN CN2013101303172A patent/CN103225574A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202578985U (en) * | 2012-06-04 | 2012-12-05 | 上汽依维柯红岩商用车有限公司 | Two-fuel-tank fuel supply system of heavy truck |
| CN202707319U (en) * | 2012-08-02 | 2013-01-30 | 中国第一汽车股份有限公司 | Pump-pipe-valve-pipe-mouth fuel oil injection system |
| CN202746307U (en) * | 2012-08-04 | 2013-02-20 | 龙工（上海）挖掘机制造有限公司 | Hydraulic auxiliary fuel tank for engineering machinery |
| CN202811139U (en) * | 2012-09-11 | 2013-03-20 | 南车青岛四方机车车辆股份有限公司 | Fuel oil supply system for railway air-conditioned power generation train |
| CN102996304A (en) * | 2013-01-06 | 2013-03-27 | 云南云岭高速公路桥梁工程有限公司 | Engineering machinery fuel oil pre-filtering device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727993A (en) * | 2015-03-16 | 2015-06-24 | 南车戚墅堰机车有限公司 | Collection device for return oil of oil injection pump |
| CN105221212A (en) * | 2015-10-16 | 2016-01-06 | 华为技术有限公司 | Motor oil-supplementing system and oil supplement method thereof |
| CN107215204A (en) * | 2017-07-24 | 2017-09-29 | 江铃汽车股份有限公司 | Automobile double fuel tank connectivity structure |
| CN111102111A (en) * | 2019-12-27 | 2020-05-05 | 南京金城机械有限公司 | Continuous oil supply mechanism, fuel oil supply device and oil supply method for electronic fuel injection engine |
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Application publication date: 20130731 |