CN108468608A - A kind of engine fuel oil system - Google Patents
A kind of engine fuel oil system Download PDFInfo
- Publication number
- CN108468608A CN108468608A CN201810157689.7A CN201810157689A CN108468608A CN 108468608 A CN108468608 A CN 108468608A CN 201810157689 A CN201810157689 A CN 201810157689A CN 108468608 A CN108468608 A CN 108468608A
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- CN
- China
- Prior art keywords
- oil
- fuel
- pipeline
- oiler
- outlet
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of engine fuel oil systems, including diesel fuel filter, high-pressure oil pump and high pressure oil rail, the diesel fuel filter is equipped with the first oiler and the first oil outlet, the high-pressure oil pump is equipped with the second oiler and the second oil outlet, and the high pressure oil rail is equipped with third oiler and third oil outlet；First oil outlet passes through the first pipeline connection with second oiler, second oil outlet passes through the second pipeline connection with the third oiler, the third oil outlet passes through third pipeline connection with first oiler, compared with prior art, the present invention is by recycling fuel oil of the high pressure oil rail without burning, the fuel flow in engine fuel oil system can be increased, more efficiently utilize fuel oil, improve the dynamic property of vehicle and economical.
Description
Technical field
The present invention relates to technical field of automobile parts, especially a kind of engine fuel oil system.
Background technology
Whether engine fuel oil system, can be good to engine performance as the system for providing power fuel to engine
Performance plays particularly important effect.
On the one hand fuel system will ensure that the dynamic property of engine is preferable, this requires fuel systems normally to be supplied
Oil and oil return, another side fuel system will also ensure that engine operation has preferable economy, and this requires fuel systems not
Fuel oil can be wasted, there is higher capacity usage ratio.
Engine fuel oil system in the prior art is primarily present problems with：One, without combustion in cylinder
The fuel oil of burning can be passed straight back in fuel tank, and the higher heat of the fuel oil is depleted without utilizing, to cause energy
Waste, cause the utilization rate of energy relatively low；Two, the high-pressure oil pump of engine fuel oil system is unable to pressure release, can not be to high pressure oil
The pressure of pump is adjusted.
Invention content
The object of the present invention is to provide a kind of engine fuel oil systems, to solve engine fuel oil system in the prior art
The not high problem of capacity usage ratio, the present invention is by recycling fuel oil of the high pressure oil rail without burning, Ke Yizeng
Fuel flow in big engine fuel oil system more efficiently utilizes fuel oil, improves the dynamic property of vehicle and economical.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of engine fuel oil system, including diesel fuel filter, high-pressure oil pump and high pressure oil rail, the diesel fuel filter are set
There are the first oiler and the first oil outlet, the high-pressure oil pump to be equipped with the second oiler and the second oil outlet, the high pressure oil rail
Equipped with third oiler and third oil outlet；First oil outlet passes through the first pipeline connection, institute with second oiler
The second oil outlet is stated with the third oiler by the second pipeline connection, the third oil outlet is logical with first oiler
Cross third pipeline connection.
Preferably, the cavity of the high-pressure oil pump is equipped with the first oil return opening, and first oil return opening passes through the 4th pipeline
It is connected to fuel tank, the third oil outlet passes through the 5th pipeline and the 4th pipeline connection.
Preferably, the 4th pipeline is equipped with the first control valve between first oil return opening and the fuel tank.
Preferably, further include the first flow divider, the entrance of first flow divider is connected to the third oil outlet, described
First flow divider is equipped with the first diffluence pass and the second diffluence pass, first diffluence pass and the third pipeline connection, and described the
Two diffluence pass and the 5th pipeline connection.
Preferably, the cavity of the high pressure oil rail is equipped with the second oil return opening, and second oil return opening passes through the 6th pipeline
It is connected to fuel tank, the third oil outlet passes through the 7th pipeline and the 6th pipeline connection.
Preferably, the 6th pipeline is equipped with the second control valve between second oil return opening and the fuel tank.
Preferably, further include the second flow divider, the entrance of second flow divider is connected to the third oil outlet, described
Second flow divider is equipped with third diffluence pass and the 4th diffluence pass, the third diffluence pass and the third pipeline connection, and described the
Four diffluence pass and the 7th pipeline connection.
Preferably, further include pressure sensor and controller, the pressure sensor is for obtaining in the high pressure oil rail
Oil liquid pressure and send a signal to controller, the controller controls first control valve or described according to the signal
The opening of second control valve or closing.
Preferably, further include inlet line, fuel oil prefilter and low pressure fuel pump, described inlet line one end and the fuel oil
Case is connected to, and the other end is connected to the fuel oil prefilter, and the outlet of the fuel oil prefilter connects with the entrance of the low pressure fuel pump
Logical, the outlet of the low pressure fuel pump is connected to the diesel fuel filter.
The beneficial effects of the present invention are：
It is described the present invention provides a kind of engine fuel oil system, including diesel fuel filter, high-pressure oil pump and high pressure oil rail
Diesel fuel filter is equipped with the first oiler and the first oil outlet, and the high-pressure oil pump is equipped with the second oiler and the second oil outlet,
The high pressure oil rail is equipped with third oiler and third oil outlet；First oil outlet passes through first with second oiler
Pipeline connection, second oil outlet and the third oiler by the second pipeline connection, the third oil outlet with it is described
First oiler is by third pipeline connection, and compared with prior art, the present invention is by by fuel oil of the high pressure oil rail without burning
It is recycled, the fuel flow in engine fuel oil system can be increased, more efficiently utilize fuel oil, improve the dynamic of vehicle
Power and economical.
Further, the present invention realizes also by the way that oil return opening is arranged on high-pressure oil pump and high pressure oil rail to high-pressure oil pump
And pressure release and the flow-rate adjustment of high pressure oil rail, ensure the good operating mode of engine fuel oil system.
Description of the drawings
Fig. 1 is the overall structure diagram of the engine fuel oil system of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the high-pressure oil pump of the embodiment of the present invention；
Fig. 3 is the piping connection schematic diagram of the engine fuel oil system of the embodiment of the present invention.
Reference sign：
1- diesel fuel filters, 2- high-pressure oil pumps, the first oilers of 4-, the first oil outlets of 5-, the second oilers of 6-, 7- second
Oil outlet, 8- third oilers, 9- third oil outlets, the first pipelines of 10-, the second pipelines of 11-, 12- third pipelines, 13- first
Oil return opening, the 4th pipelines of 14-, the 5th pipelines of 15-, 16- inlet lines, 17- fuel oil prefilters, 18- low pressure fuel pumps.
Specific implementation mode
The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining the present invention, and cannot be construed to
Limitation of the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of engine fuel oil system, including diesel fuel filter 1, high pressure oil
Pump 2 and high pressure oil rail, the diesel fuel filter 1 are equipped with the first oiler 4 and the first oil outlet 5, and the high-pressure oil pump 2 is equipped with the
Two oilers 6 and the second oil outlet 7, the high pressure oil rail are equipped with third oiler 8 and third oil outlet 9；Described first is fuel-displaced
Mouthfuls 5 are connected to second oiler 6 by the first pipeline 10, and second oil outlet 7 and the third oiler 8 pass through the
Two pipelines 11 are connected to, and the third oil outlet 9 is connected to first oiler 4 by third pipeline 12.The diesel oil and filter
Clear device 1 is preferably accurate filter.
In the engine fuel oil system of the present invention, fuel oil is entered through the first oiler 4 in diesel fuel filter 1, then
By diesel fuel filter 1 filter after, be discharged by the first oil outlet 5, by the first pipeline 10 enter in high-pressure oil pump 2 into
Row boosting is entered by the second pipeline 11 in high pressure oil rail as the second oil outlet 7 through high-pressure oil pump 2 is discharged, and through spray
Mouth is injected into cylinder, is mixed and burned in cylinder with air, to provide power for engine, in this process always without burning
Fuel oil diesel fuel filter 1 is entered via the first oiler 4 by third pipeline 12, subsequently recycled next time, further
Secondary enter in high-pressure oil pump 2, high pressure oil rail and cylinder is burnt；By the flow path of above-mentioned fuel oil it is found that the present invention
Engine fuel oil system recycles the fuel oil without burning in high pressure oil rail, since the fuel oil has certain heat
Amount, when it enters high pressure oil rail and cylinder, it is easier to fully be burnt, with the prior art by its whole oil return to firing
It is compared in fuel tank, the present invention can not only increase the fuel flow in engine fuel oil system, moreover it is possible to fuel oil is more efficiently utilized,
Improve the dynamic property of vehicle and economical.
Further include the inlet line 16, fuel oil prefilter 17 and low pressure fuel pump being sequentially connected on the basis of above structure
18,16 one end of the inlet line is connected to the fuel tank, and the other end is connected to the fuel oil prefilter 17, and the fuel oil is pre-
The outlet of filter 17 is connected to the entrance of the low pressure fuel pump 18, the outlet of the low pressure fuel pump 18 and the diesel fuel filter 1
Connection.After starting low pressure fuel pump 18, the fuel oil in fuel tank is sucked into inlet line 16, is carried out through fuel oil prefilter 17 after
Preliminary filtering, it is ensured that the quality for entering the fuel oil of low pressure fuel pump 18 avoids the impurity in fuel oil from causing low pressure fuel pump 18
It blocks or fuel flow communication is unsmooth.In such structure, as shown in figure 3, the third oil outlet 9 and first oiler 4
By 12 indirect communication of third pipeline, third oil outlet 9 is preferably connected to by third pipeline 12 with inlet line 16 first, then
It is connected to third pipeline 12 by inlet line 16, fuel oil prefilter 17 and low pressure fuel pump 18.
Further, as shown in Fig. 2, the cavity of the high-pressure oil pump 2 is equipped with the first oil return opening 13, first oil return
Mouth 13 is connected to by the 4th pipeline 14 with fuel tank, and the third oil outlet 9 passes through the 5th pipeline 15 and the 4th pipeline 14
Connection.When the fuel pressure in high temperature oil pump 2, high temperature oil rail 3 is larger or fuel flow is excessive, the first oil return can be passed through
Mouth 13 reduces high temperature oil pump 2 and the pressure in high temperature oil rail 3 or flow by extra fuel flow returns to fuel tank, for hair
Motivation provides the fuel oil of convenient pressure, ensures the dynamic property of engine and economical, while can also extend high temperature oil pump 2 and high temperature
The service life of oily rail 3.And be connected to third oil outlet 9 with the 4th pipeline 14 by the 5th pipeline 15, it can will be by high pressure oil
The high temp oil-fired that the section of track the goes out fuel oil relatively low with the oil temperature being discharged by high temperature oil pump 2 mixes, and reduces in entire fuel pipe
The temperature of fuel oil improves the service life of fuel pipe.
The connection of the first oil return opening 13 and fuel tank is controlled with cut-out for convenience, the 4th pipeline 14 is in institute
It states and is equipped with the first control valve between the first oil return opening 13 and the fuel tank.First control valve is preferably arranged to solenoid electric valve.
Due to high pressure oil rail third oil outlet 9 be discharged fuel oil, be divided into two-way, all the way through diesel fuel filter 1 filter into
Enter recycling, to reduce its temperature, then most the relatively low fuel oil of the temperature that another way is discharged with high-pressure oil pump 2 mixes
It is back to fuel tank eventually, therefore the fuel oil total flow that high pressure oil rail 3 is discharged is needed to shunt at third oil outlet 9, therefore this
Invention further preferably includes the first flow divider, and the entrance of first flow divider is connected to the third oil outlet 9, described first point
It flows valve and is equipped with the first diffluence pass and the second diffluence pass, first diffluence pass is connected to the third pipeline 12, described second point
Head piece is connected to the 5th pipeline 15.The fuel oil total flow of high pressure oil rail discharge is divided as needed via the first flow divider
Match, can preferably meet the needs of whole system, the fuel pressure and temperature in guarantee system are in zone of reasonableness.
In another embodiment, the cavity of the high pressure oil rail is equipped with the second oil return opening, and second oil return opening is logical
It crosses the 6th pipeline to be connected to fuel tank, the third oil outlet 9 passes through the 7th pipeline and the 6th pipeline connection.Due to high pressure
Fuel pressure in oily rail is higher, and the second oil return opening is set up directly on high pressure oil rail, can be more direct, convenient, efficient
Realize the reduction of the fuel pressure in high pressure oil rail in ground.First oil return opening 13 and the second oil return opening generally with up to setting wherein it
One.Similarly, third oil outlet 9 can be adjusted the temperature of fuel oil by the 7th pipeline and the 6th pipeline connection.
In order to which the fuel flow that the second oil return opening is discharged controls, the 6th pipeline second oil return opening with
The second control valve is equipped between the fuel tank.Second control valve is preferably arranged to solenoid electric valve.
Further include the second flow divider to reasonably be distributed the fuel flow being discharged in high pressure oil rail, described
The entrance of two flow dividers is connected to the third oil outlet 9, and second flow divider is equipped with third diffluence pass and the 4th diffluence pass,
The third diffluence pass is connected to the third pipeline 12, the 4th diffluence pass and the 7th pipeline connection.
In addition, the present invention further preferably includes pressure sensor and controller, the pressure sensor is for obtaining the height
Oil liquid pressure in pressure oil rail simultaneously sends a signal to controller, and the controller controls first control valve according to the signal
The either opening of second control valve or closing.It is also preferably provided with flow sensor in systems, to the flow in system
It is detected and sends a signal to controller, controller is according to the assignment of traffic of signal pair first flow divider and the second flow divider
It is adjusted, adjusts the flow of two branches of the third oil outlet 9 of high pressure oil rail, preferably to adjust system intermediate fuel oil temperature
And the flow of fuel oil.
The structure, feature and effect of the present invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Change made by thinking, or is revised as the equivalent embodiment of equivalent variations, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (9)
1. a kind of engine fuel oil system, including diesel fuel filter (1), high-pressure oil pump (2) and high pressure oil rail, it is characterised in that：
The diesel fuel filter (1) is equipped with the first oiler (4) and the first oil outlet (5), and the high-pressure oil pump (2) is equipped with second
Oiler (6) and the second oil outlet (7), the high pressure oil rail are equipped with third oiler (8) and third oil outlet (9)；
First oil outlet (5) is connected to second oiler (6) by the first pipeline (10), second oil outlet
(7) it is connected to by the second pipeline (11) with the third oiler (8), the third oil outlet (9) and first oiler
(4) it is connected to by third pipeline (12).
2. engine fuel oil system according to claim 1, which is characterized in that set on the cavity of the high-pressure oil pump (2)
There are the first oil return opening (13), first oil return opening (13) to be connected to fuel tank by the 4th pipeline (14), the third is fuel-displaced
Mouth (9) is connected to by the 5th pipeline (15) with the 4th pipeline (14).
3. engine fuel oil system according to claim 2, which is characterized in that the 4th pipeline (14) is described first
The first control valve is equipped between oil return opening (13) and the fuel tank.
4. engine fuel oil system according to claim 2, which is characterized in that further include the first flow divider, described first
The entrance of flow divider is connected to the third oil outlet (9), and first flow divider is equipped with the first diffluence pass and the second diffluence pass,
First diffluence pass is connected to the third pipeline (12), and second diffluence pass is connected to the 5th pipeline (15).
5. engine fuel oil system according to claim 1, which is characterized in that the cavity of the high pressure oil rail is equipped with the
Two oil return openings, second oil return opening are connected to by the 6th pipeline with fuel tank, and the third oil outlet (9) passes through the 7th pipeline
With the 6th pipeline connection.
6. engine fuel oil system according to claim 5, which is characterized in that the 6th pipeline is in second oil return
The second control valve is equipped between mouth and the fuel tank.
7. engine fuel oil system according to claim 5, which is characterized in that further include the second flow divider, described second
The entrance of flow divider is connected to the third oil outlet (9), and second flow divider is equipped with third diffluence pass and the 4th diffluence pass,
The third diffluence pass is connected to the third pipeline (12), the 4th diffluence pass and the 7th pipeline connection.
8. the engine fuel oil system according to claim 3 or 6, which is characterized in that further include pressure sensor and control
Device, the pressure sensor is for obtaining the oil liquid pressure in the high pressure oil rail and sending a signal to controller, the control
Device controls first the control valve either opening of second control valve or closing according to the signal.
9. according to claim 2-7 any one of them engine fuel oil systems, which is characterized in that further include inlet line
(16), fuel oil prefilter (17) and low pressure fuel pump (18), described inlet line (16) one end are connected to the fuel tank, the other end
It is connected to the fuel oil prefilter (17), the outlet of the fuel oil prefilter (17) connects with the entrance of the low pressure fuel pump (18)
Logical, the outlet of the low pressure fuel pump (18) is connected to the diesel fuel filter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157689.7A CN108468608B (en) | 2018-02-24 | 2018-02-24 | Engine fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157689.7A CN108468608B (en) | 2018-02-24 | 2018-02-24 | Engine fuel system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108468608A true CN108468608A (en) | 2018-08-31 |
| CN108468608B CN108468608B (en) | 2020-01-21 |
Family
ID=63264063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810157689.7A Active CN108468608B (en) | 2018-02-24 | 2018-02-24 | Engine fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108468608B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356753A (en) * | 2018-11-02 | 2019-02-19 | 郑州日产汽车有限公司 | The fuel system for having vehicle fuel temp regulating function |
| CN110735746A (en) * | 2019-11-06 | 2020-01-31 | 一汽解放汽车有限公司 | fuel prefilter and prefilter filtering control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050047929A1 (en) * | 2003-09-03 | 2005-03-03 | Denso Corporation | Fuel injection pump having filter |
| US20090277424A1 (en) * | 2008-05-06 | 2009-11-12 | Denso Corporation | Fuel supply apparatus |
| US20100196172A1 (en) * | 2009-02-02 | 2010-08-05 | Denso Corporation | Fuel supply system |
| CN203098103U (en) * | 2013-01-14 | 2013-07-31 | 安徽江淮汽车股份有限公司 | Oil supply system of diesel engine |
-
2018
- 2018-02-24 CN CN201810157689.7A patent/CN108468608B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050047929A1 (en) * | 2003-09-03 | 2005-03-03 | Denso Corporation | Fuel injection pump having filter |
| US20090277424A1 (en) * | 2008-05-06 | 2009-11-12 | Denso Corporation | Fuel supply apparatus |
| US20100196172A1 (en) * | 2009-02-02 | 2010-08-05 | Denso Corporation | Fuel supply system |
| CN203098103U (en) * | 2013-01-14 | 2013-07-31 | 安徽江淮汽车股份有限公司 | Oil supply system of diesel engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356753A (en) * | 2018-11-02 | 2019-02-19 | 郑州日产汽车有限公司 | The fuel system for having vehicle fuel temp regulating function |
| CN109356753B (en) * | 2018-11-02 | 2023-10-27 | 郑州日产汽车有限公司 | Fuel system with automobile fuel temperature adjusting function |
| CN110735746A (en) * | 2019-11-06 | 2020-01-31 | 一汽解放汽车有限公司 | fuel prefilter and prefilter filtering control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108468608B (en) | 2020-01-21 |
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