CN206617246U - A kind of fuel system - Google Patents
A kind of fuel system Download PDFInfo
- Publication number
- CN206617246U CN206617246U CN201621237206.7U CN201621237206U CN206617246U CN 206617246 U CN206617246 U CN 206617246U CN 201621237206 U CN201621237206 U CN 201621237206U CN 206617246 U CN206617246 U CN 206617246U
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- Prior art keywords
- fuel
- nozzle
- pressure
- petrolift
- processor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model proposes a kind of fuel system, including for the fuel nozzle (7) to engine (8) interior spray fuel, it is electrically connected with fuel nozzle (7), for the electronic fuel injected system (6) for the injection pulse width for controlling fuel nozzle (7), fuel tank (1), it is connected respectively by pipeline with fuel nozzle (7) and fuel tank (1), for by petrolift (2) from the petrolift in fuel tank (1) to fuel nozzle (7), it is arranged on the position being located between petrolift (2) and fuel nozzle (7) of pipeline, for detecting the pressure sensor (4) of fuel supply pressure and being electrically connected with pressure sensor (4), regulator for adjusting fuel supply pressure according to the air-fuel ratio of fuel.Fuel system of the present utility model does not influence the service life of fuel nozzle also while using the feature of environmental protection higher substitute fuel, practical.
Description
Technical field
The utility model is related to field of vehicle equipment, more particularly to a kind of fuel system.
Background technology
Increasingly it is taken seriously with the fast development and environmental protection of automobile industry, people increasingly see heavy fuel
Economy and the feature of environmental protection, then start with the preferable substitute fuel of some feature of environmental protection, such as methanol.But the air-fuel of substitute fuel
Than having larger difference with gasoline, such as the air-fuel ratio of methanol is 6.4 or so, and the air-fuel ratio of gasoline is 14.7 or so；Further
Ground, is exclusively used in the fuel system of gasoline existing, and fuel supply pressure is constant.If in the supply of existing fuel
In system use methanol when, fuel nozzle injection methanol when methanol injection pulse width than its injected petrol when gasoline injection arteries and veins
More than width is twice.Such case can cause very big negative effect to the service life of fuel nozzle, be more seriously to work as combustion
When the fuel flow rate that material nozzle is sprayed is not enough, engine probably can not be used normally.
Utility model content
The utility model existing for being exclusively used in the fuel system of gasoline, and fuel supply pressure is constant
's.If use methanol in existing fuel system, methanol injection pulse width during fuel nozzle injection methanol is than it
More than gasoline injection pulse width during injected petrol is twice.Such case can cause very big negative to the service life of fuel nozzle
Face is rung, and is more seriously, and when the fuel flow rate that fuel nozzle is sprayed is not enough, engine probably can not be used normally
The problem of, it is proposed that a kind of fuel system.
The technical scheme that the utility model is proposed for above-mentioned technical problem is as follows：
The utility model proposes a kind of fuel system, including the fuel spray for the spray fuel into engine
Mouth, the electronic fuel injected system of the injection pulse width with fuel nozzle electric connection, for controlling fuel nozzle, fuel tank, point
Be not connected by pipeline with fuel nozzle and fuel tank, for by petrolift from the petrolift in fuel tank to fuel nozzle, if
Put being located on position between petrolift and fuel nozzle of pipeline, for detect the pressure sensor of fuel supply pressure with
And be electrically connected with pressure sensor, for the regulator according to the air-fuel ratio of fuel adjustment fuel supply pressure.
In the above-mentioned fuel system of the utility model, regulator include processor, the processor respectively with pressure
Sensor and petrolift are electrically connected with, for adjusting fuel supply pressure by adjusting fuel pump discharge.
In the above-mentioned fuel system of the utility model, in addition to pass through pipeline and fuel nozzle and fuel tank company respectively
The pressure regulator connect.
In the above-mentioned fuel system of the utility model, regulator also includes multiple respectively by pipeline and fuel spray
Mouth and the pressure regulator of fuel tank connection, are controlled with multiple pressure regulators one-to-one corresponding, for being respectively turned on or closing
The multiple stop valves and processor of corresponding pressure adjuster working condition；The processor respectively with pressure sensor and multiple sections
Only valve is electrically connected with, for adjusting fuel supply pressure by adjusting the quantity of cut-off valve closure.
In the above-mentioned fuel system of the utility model, regulator also include respectively by pipeline and fuel nozzle and
The pressure regulator of fuel tank connection, is connected, the adjustment of pretightning force for adjusting pressure regulator spring with pressure regulator
Mechanism and processor；The processor is electrically connected with pressure sensor and adjustment mechanism respectively, for being adjusted by adjustment mechanism
The pretightning force of pressure regulator spring is saved to adjust fuel supply pressure.
In the above-mentioned fuel system of the utility model, in addition to processor communication be connected, for being sent out to processor
Send the input equipment of the air-fuel ratio of fuel.
In the above-mentioned fuel system of the utility model, input equipment is car-mounted terminal or external smart terminal.
Fuel system of the present utility model is directed to the different fuel that fuel system is used, and will fire as far as possible
On the premise of the fluctuation range for the injection pulse width that material nozzle is sprayed is limited in a narrower range, using regulator to combustion
Material supply pressure is suitably adjusted, it is possible to achieve fuel supply flow is met use requirement；Fuel of the present utility model is supplied
Answer system while using the feature of environmental protection higher substitute fuel, do not influence the service life of fuel nozzle also, it is practical.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 shows the schematic diagram of the fuel system of the utility model first embodiment；
Fig. 2 shows the schematic diagram of the fuel system of the utility model second embodiment；
Fig. 3 shows the schematic diagram of the fuel system of the utility model 3rd embodiment.
Embodiment
Technical problem to be solved in the utility model is：It is exclusively used in the fuel system of gasoline, fires existing
Expect that supply pressure is constant.If use methanol in existing fuel system, first during fuel nozzle injection methanol
More than gasoline injection pulse width when alcohol injection pulse width is than its injected petrol is twice.Such case can be to fuel nozzle use
Life-span causes very big negative effect, is more seriously, and when the fuel flow rate that fuel nozzle is sprayed is not enough, engine has very much
Possibly can not normally it use.The technical thought that the utility model is proposed with regard to the technical problem is：For fuel system institute
The different fuel of use, a narrower range is limited in the fluctuation range for the injection pulse width for as far as possible being sprayed fuel nozzle
On the premise of interior, fuel supply pressure is suitably adjusted using regulator, it is possible to achieve meet fuel supply flow
Use requirement.
In order that technical purpose of the present utility model, technical scheme and technique effect are apparent, in order to this area
Technical staff understands and implemented the utility model, the utility model is done below in conjunction with the accompanying drawings and the specific embodiments further in detail
Thin explanation.
First embodiment
As shown in figure 1, Fig. 1 shows the schematic diagram of the fuel system of the utility model first embodiment.Fuel is supplied
Answer system to include being used for the fuel nozzle 7 of the spray fuel into engine 8, be electrically connected with, with fuel nozzle 7 for controlling fuel
The electronic fuel injected system 6 of the injection pulse width of nozzle 7, fuel tank 1 is connected by pipeline with fuel nozzle 7 and fuel tank 1 respectively
Connect, for by the petrolift in fuel tank 1, to the petrolift 2 of fuel nozzle 7, be arranged on pipeline to be located at petrolift 2 and fuel
Pressure sensor 4 on position between nozzle 7, for detecting fuel supply pressure and be electrically connected with pressure sensor 4,
Regulator for adjusting fuel supply pressure according to the air-fuel ratio of fuel.So, will in use electronic fuel injected system 6
The premise that the injection pulse width of fuel nozzle 7 is limited in a narrower scope is (it is appreciated that under ideal conditions, spray arteries and veins
Width can keep constant) under, by adjusting fuel supply pressure, fuel supply flow can be made to meet use requirement.
Further, regulator includes processor 3, and the processor 3 is electrical with pressure sensor 4 and petrolift 2 respectively
Connection, for adjusting fuel supply pressure by adjusting the flow of petrolift 2.It is appreciated that the regulation of the flow of petrolift 2 can be with
Export the methods such as valve opening, the impeller channel quantity of petrolift 2 by adjusting the rotating speed of the impeller of petrolift 2, petrolift 2 and realize.
Further, fuel system also includes the pressure being connected respectively by pipeline with fuel nozzle 7 and fuel tank 1
Adjuster 5.In the present embodiment, pressure regulator 5 mainly serves for ensuring fuel supply pressure and is in certain limit, so as to protect
Demonstrate,prove the effect of fuel system security provisions fuel.
It is connected, it is appreciated that fuel system also includes communicating with processor 3 for sending fuel to processor 3
The input equipment (not shown) of air-fuel ratio.The input equipment can be car-mounted terminal or external smart terminal etc..
When fuel tank 1 substitutes the first fuel using the fuel combination of the second fuel or the second fuel and the first fuel
When, regulator (or processor 3) is used to fuel supply pressure P being adjusted to：
Wherein, λAFor the air-fuel ratio of the first fuel；
λBFor the air-fuel ratio of the second fuel；
ρAFor the density of the first fuel；
ρBFor the density of the second fuel；
ε is the mass percent shared by the first fuel in fuel tank 1；
1- ε are the mass percent shared by the second fuel in fuel tank 1；
PABy fuel system in the fuel supply pressure used when using the first fuel in fuel tank 1.At this
In embodiment, by using above-mentioned fuel supply pressure P calculating formula, it is to avoid when fuel system replaces fuel pair
Recalculating for fuel supply flow, reduces the workload of calculating.
Second embodiment
As shown in Fig. 2 Fig. 2 shows the schematic diagram of the fuel system of the utility model second embodiment.Fuel is supplied
Answer system to include being used for the fuel nozzle 7 of the spray fuel into engine 8, be electrically connected with, with fuel nozzle 7 for controlling fuel
The electronic fuel injected system 6 of the injection pulse width of nozzle 7, fuel tank 1 is connected by pipeline with fuel nozzle 7 and fuel tank 1 respectively
Connect, for by the petrolift in fuel tank 1, to the petrolift 2 of fuel nozzle 7, be arranged on pipeline to be located at petrolift 2 and fuel
Pressure sensor 4 on position between nozzle 7, for detecting fuel supply pressure and be electrically connected with pressure sensor 4,
Regulator for adjusting fuel supply pressure according to the air-fuel ratio of fuel.So, will in use electronic fuel injected system 6
The premise that the injection pulse width of fuel nozzle 7 is limited in a narrower scope is (it is appreciated that under ideal conditions, spray arteries and veins
Width can keep constant) under, by adjusting fuel supply pressure, fuel supply flow can be made to meet use requirement.
Further, regulator also includes multiple pressure being connected respectively by pipeline with fuel nozzle 7 and fuel tank 1
Adjuster 5, corresponds with multiple pressure regulators 5, controls corresponding pressure adjuster 5 to work for being respectively turned on or closing
The multiple stop valves 9 and processor 3 of state；The processor 3 is electrically connected with pressure sensor 4 and multiple stop valves 9 respectively,
For adjusting fuel supply pressure by adjusting the quantity of the closing of stop valve 9.Herein, when stop valve 9 is turned on, its correspondence
Pressure regulator 5 it is in running order；When stop valve 9 is closed, its corresponding pressure adjuster 5 is in the state that is stopped.
Further, fuel system, which also includes communicating with processor 3, is connected, for sending fuel to processor 3
The input equipment (not shown) of air-fuel ratio.The input equipment can be car-mounted terminal or external smart terminal etc..
When fuel tank 1 substitutes the first fuel using the fuel combination of the second fuel or the second fuel and the first fuel
When, regulator (or processor 3) is used to fuel supply pressure P being adjusted to：
Wherein, λAFor the air-fuel ratio of the first fuel；
λBFor the air-fuel ratio of the second fuel；
ρAFor the density of the first fuel；
ρBFor the density of the second fuel；
ε is the mass percent shared by the first fuel in fuel tank 1；
1- ε are the mass percent shared by the second fuel in fuel tank 1；
PABy fuel system in the fuel supply pressure used when using the first fuel in fuel tank 1.At this
In embodiment, by using above-mentioned fuel supply pressure P calculating formula, it is to avoid when fuel system replaces fuel pair
Recalculating for fuel supply flow, reduces the workload of calculating.
3rd embodiment
As shown in figure 3, Fig. 3 shows the schematic diagram of the fuel system of the utility model 3rd embodiment.Fuel is supplied
Answer system to include being used for the fuel nozzle 7 of the spray fuel into engine 8, be electrically connected with, with fuel nozzle 7 for controlling fuel
The electronic fuel injected system 6 of the injection pulse width of nozzle 7, fuel tank 1 is connected by pipeline with fuel nozzle 7 and fuel tank 1 respectively
Connect, for by the petrolift in fuel tank 1, to the petrolift 2 of fuel nozzle 7, be arranged on pipeline to be located at petrolift 2 and fuel
Pressure sensor 4 on position between nozzle 7, for detecting fuel supply pressure and be electrically connected with pressure sensor 4,
Regulator for adjusting fuel supply pressure according to the air-fuel ratio of fuel.So, will in use electronic fuel injected system 6
The premise that the injection pulse width of fuel nozzle 7 is limited in a narrower scope is (it is appreciated that under ideal conditions, spray arteries and veins
Width can keep constant) under, by adjusting fuel supply pressure, fuel supply flow can be made to meet use requirement.
Further, the pressure that regulator also includes being connected with fuel nozzle 7 and fuel tank 1 by pipeline respectively is adjusted
Device 5, is connected, the adjustment mechanism 10 and processor 3 of pretightning force for adjusting the spring of pressure regulator 5 with pressure regulator 5；
The processor 3 is electrically connected with pressure sensor 4 and adjustment mechanism 10 respectively, is adjusted for adjusting pressure by adjustment mechanism 10
The pretightning force of the spring of device 5 adjusts fuel supply pressure.
Further, fuel system, which also includes communicating with processor 3, is connected, for sending fuel to processor 3
The input equipment (not shown) of air-fuel ratio.The input equipment can be car-mounted terminal or external smart terminal etc..
When fuel tank 1 substitutes the first fuel using the fuel combination of the second fuel or the second fuel and the first fuel
When, regulator (or processor 3) is used to fuel supply pressure P being adjusted to：
Wherein, λAFor the air-fuel ratio of the first fuel；
λBFor the air-fuel ratio of the second fuel；
ρAFor the density of the first fuel；
ρBFor the density of the second fuel；
ε is the mass percent shared by the first fuel in fuel tank 1；
1- ε are the mass percent shared by the second fuel in fuel tank 1；
PABy fuel system in the fuel supply pressure used when using the first fuel in fuel tank 1.At this
In embodiment, by using above-mentioned fuel supply pressure P calculating formula, it is to avoid when fuel system replaces fuel pair
Recalculating for fuel supply flow, reduces the workload of calculating.
The fuel that the utility model also proposed a kind of fuel system based on first embodiment -3rd embodiment is supplied
Induction method, comprises the following steps：
Step S1, substitute the first fuel using alternative fuel when fuel tank 1, alternative fuel is the second fuel or the
During the fuel combination of two fuel and the first fuel, fuel supply pressure P is adjusted to using regulator：
Wherein, λAFor the air-fuel ratio of the first fuel；
λBFor the air-fuel ratio of the second fuel；
ρAFor the density of the first fuel；
ρBFor the density of the second fuel；
ε is the mass percent shared by the first fuel in fuel tank 1；
1- ε are the mass percent shared by the second fuel in fuel tank 1；
PABy fuel system in the fuel supply pressure used when using the first fuel in fuel tank 1；
Step S2, using fuel nozzle 7 spray alternative fuel.
For example, when the first fuel is gasoline, and alternative fuel is methanol, λAFor 14.7；ρAFor 0.72g/cm3；PAFor
0.3MPa；λBFor 6.52；ρBFor 0.79g/cm3；ε is 0；
Then there is fuel supply pressure
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the utility model appended claims.
Claims (3)
1. a kind of fuel system, it is characterised in that including for the fuel nozzle (7) to engine (8) interior spray fuel,
The electronic fuel injected system (6) of injection pulse width with fuel nozzle (7) electric connection, for controlling fuel nozzle (7), fuel
Case (1), be connected respectively by pipeline with fuel nozzle (7) and fuel tank (1), for by the petrolift in fuel tank (1) to combustion
Expect the petrolift (2) of nozzle (7), be arranged on the position being located between petrolift (2) and fuel nozzle (7) of pipeline, be used for
Detect the pressure sensor (4) of fuel supply pressure and be electrically connected with, for the air-fuel according to fuel with pressure sensor (4)
Than the regulator for adjusting fuel supply pressure；
Regulator also includes multiple pressure regulators being connected respectively by pipeline with fuel nozzle (7) and fuel tank (1)
(5), corresponding pressure adjuster (5) is controlled to work with multiple pressure regulators (5) one-to-one corresponding, for being respectively turned on or closing
The multiple stop valves (9) and processor (3) of state；The processor (3) respectively with pressure sensor (4) and multiple stop valves
(9) it is electrically connected with, for adjusting fuel supply pressure by adjusting the quantity of stop valve (9) closing.
2. fuel system according to claim 1, it is characterised in that also including being connected, using with processor (3) communication
In the input equipment for the air-fuel ratio that fuel is sent to processor (3).
3. fuel system according to claim 2, it is characterised in that input equipment is car-mounted terminal or outside intelligence
Can terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237206.7U CN206617246U (en) | 2016-11-07 | 2016-11-07 | A kind of fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237206.7U CN206617246U (en) | 2016-11-07 | 2016-11-07 | A kind of fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206617246U true CN206617246U (en) | 2017-11-07 |
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ID=60228795
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621237206.7U Active CN206617246U (en) | 2016-11-07 | 2016-11-07 | A kind of fuel system |
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| Country | Link |
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| CN (1) | CN206617246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368855A (en) * | 2016-11-07 | 2017-02-01 | 武汉维思艾克软件有限公司 | Fuel supply system and fuel supply method |
-
2016
- 2016-11-07 CN CN201621237206.7U patent/CN206617246U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368855A (en) * | 2016-11-07 | 2017-02-01 | 武汉维思艾克软件有限公司 | Fuel supply system and fuel supply method |
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