CN116624299A - Fuel supply system for vehicle and method of supplying fuel - Google Patents
Fuel supply system for vehicle and method of supplying fuel Download PDFInfo
- Publication number
- CN116624299A CN116624299A CN202310572459.8A CN202310572459A CN116624299A CN 116624299 A CN116624299 A CN 116624299A CN 202310572459 A CN202310572459 A CN 202310572459A CN 116624299 A CN116624299 A CN 116624299A
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- Prior art keywords
- fuel
- vehicle
- supply system
- additional
- fuel tank
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- 239000000446 fuel Substances 0.000 title claims abstract description 252
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims abstract description 101
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
-
- 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
-
- 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
- F02M37/0047—Layout or arrangement of systems for feeding fuel
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention relates to a fuel supply system (100) for a vehicle, comprising: -a main fuel tank (1), -a main fuel pump (2), -a fuel supply line (3), wherein fuel is transported from the main fuel tank (1) by means of the main fuel pump (2) via the fuel supply line (3) to a fuel injection system (4) of a vehicle engine. The fuel supply system (100) further comprises an additional fuel tank (5) for storing a reserve fuel. The invention also relates to a method for supplying fuel to a vehicle engine by means of a fuel supply system (100). The present invention has an advantage in that when the vehicle must be suddenly stopped due to fuel exhaustion, the spare fuel is supplied through the additional fuel tank so that the driver can restart the vehicle so that the vehicle can be driven away from the current dangerous location.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a fuel supply system for vehicles, in particular passenger vehicles. The invention further relates to a method for supplying fuel to a vehicle engine by means of the fuel supply system.
Background
In life, the fuel quantity index of the vehicle is frequently reminded to be ignored by drivers, particularly drivers with insufficient experience, and finally the fuel consumption in the middle of the vehicle is caused to thoroughly fail to drive, namely, the situation of lying down a pit is extremely dangerous if the situation occurs in a state that the vehicle rapidly drives on a highway, so that serious traffic safety accidents are easily caused, and the sudden lying down of the vehicle in a traffic lane can obstruct the traffic efficiency of the lane. At this time, the vehicle cannot be restarted at all due to the exhaustion of the oil amount or after the start due to abnormal vibration of the engine, so that it is extremely difficult for the driver to want to travel the "groveling" vehicle to the safe position again. Thus, the traffic safety and the road traffic efficiency are adversely affected.
Disclosure of Invention
In view of one of the above disadvantages and/or other possible disadvantages not mentioned here, it is therefore an object of the present invention to provide a fuel supply system for a vehicle, in particular a passenger car, and a method for supplying fuel to a vehicle engine by means of the fuel supply system.
According to a first aspect of the present invention, there is provided a fuel supply system for a vehicle, the fuel supply system comprising a main fuel tank, a main fuel pump, a fuel supply line, wherein fuel is delivered by means of the main fuel pump from the main fuel tank via the fuel supply line to a fuel injection system of an engine of the vehicle. The fuel supply system further includes an additional fuel tank for storing a reserve fuel.
The fuel supply system for a vehicle according to the present invention can realize that even when the vehicle must be suddenly stopped due to exhaustion of fuel such as gasoline or diesel, the spare fuel is supplied through the additional fuel tank so that the driver can reliably restart the vehicle, and in particular, a small amount of fuel such as about 5km can be supplied by the additional fuel tank so that the vehicle can travel away from a current dangerous location such as a traffic lane on an expressway while being stopped in a safe location such as an emergency lane at an expressway, thereby securing traveling safety while improving the traffic efficiency of the road.
According to an alternative embodiment of the invention, the additional fuel tank is arranged outside the main fuel tank, in particular on the vehicle chassis independently of the main fuel tank. The structure and arrangement position of the additional fuel tank can thus be flexibly designed, for example the additional fuel tank can be constructed flat and arranged with the aid of the gaps between the components on the chassis. For example, it is also possible to arrange the additional fuel tank in the vicinity of the front axle or the rear axle of the vehicle in consideration of the front-rear weight distribution of the vehicle, thereby achieving balance of the weight distribution of the vehicle and thus excellent dynamic handling. Alternatively, the additional fuel tank may also be arranged integrally within the main fuel tank, in particular separated from the main fuel tank by a partition. For example, the additional fuel tank may simply be configured as part of the main fuel tank for storing a quantity of the reserve fuel. This allows a redundant fuel supply to be produced in a simple and cost-effective manner. The volume of the additional fuel tank may, for example, correspond to only about one tenth of the main fuel tank. Thus, there is no significant adverse effect on the volume of the main fuel tank and thus the cruising ability of the vehicle.
According to an alternative embodiment of the invention, the additional fuel tank is connected to the main fuel tank via a fuel line, wherein a control valve, in particular a solenoid valve, is arranged on the fuel line. Thus, when the fuel in the main fuel tank is exhausted, the spare fuel in the additional fuel tank is allowed to flow into the main fuel tank by opening the control valve, thereby providing the vehicle with a small amount of fuel required to be able to drive off the dangerous location. In addition, the connection between the additional fuel tank and the main fuel tank can also enable the replacement of the spare fuel stored in the additional fuel tank at regular intervals, so that the quality of the spare fuel is maintained good. For example, when the main fuel tank is full of fuel, the control valve is kept open to exchange fuel in the additional fuel tank with fuel in the main fuel tank, so as to prevent the fuel in the additional fuel tank from deteriorating due to long-term non-use.
According to an alternative embodiment of the invention, the fuel supply system further comprises an additional fuel pump for pumping fuel from an additional fuel tank. The additional fuel pump may be arranged in an additional fuel tank, for example. In this way, when the fuel in the main fuel tank is depleted, the additional fuel pump can be used to pump the additional fuel in the additional fuel tank into the main fuel tank quickly, so that the "groveling" vehicle can be started quickly, and the vehicle can be driven away from the dangerous position. Furthermore, a circulation between the fuel in the additional fuel tank and the fuel in the main fuel tank can also be achieved more quickly by means of the additional fuel pump, so that a good quality of the reserve fuel is maintained. The additional fuel pump is in particular provided as a transfer pump which can be operated in both directions, in order to be able to operate in reverse, for example for sucking fuel from the main fuel tank to replenish the additional fuel tank with fuel or for periodically changing the fuel as required. The additional fuel pump can be designed, for example, as a gear pump, plunger pump, centrifugal vane pump, etc., in particular, with smaller dimensions and power than the main fuel pump, in order to reduce costs and save energy.
According to an alternative embodiment of the invention, the fuel supply system further comprises an additional fuel supply line for supplying the reserve fuel directly from the additional fuel tank by means of an additional fuel pump via the additional fuel supply line to the fuel injection system of the vehicle engine, for example directly into the fuel distributor or the fuel injector. The redundant arrangement of the entire fuel supply system is achieved by the additional fuel tank, fuel pump and fuel supply lines. Thus, by means of the redundant fuel supply system, the vehicle engine can be reliably supplied with fuel even when the main fuel pump fails, so that the engine can obtain a stable fuel supply without abnormal vibration, and the vehicle can be restarted, for example, more reliably and driven away from a dangerous position. In this case, the redundant fuel supply system can be configured more simply and economically as an emergency backup, in particular, only for supplying a small amount of backup fuel. For example, the additional fuel tank and the fuel pump may be arranged as close as possible to the fuel injection system, in particular the fuel distributor, such as a "fuel rail", in order to reduce the length of the additional fuel supply line and the pressure loss of the fuel in the supply line.
According to an alternative embodiment of the invention, a level sensor is arranged in the main fuel tank for detecting the amount of fuel, in particular the fuel level, in the main fuel tank. Here, an existing fuel level detection device in the vehicle can be generally used. In this way, it is possible to determine that the vehicle is under-supplied, i.e. is "lying" when it is detected that the fuel level in the main fuel tank is below a set threshold value (which may be, for example, a target level for the main fuel pump to be able to operate, in particular for the intake fuel), in order to prepare for the use of stored reserve fuel or to start the redundant fuel supply system. The liquid level sensor may be configured as a capacitive liquid level sensor, a float liquid level sensor, an ultrasonic liquid level sensor, or the like.
According to an alternative embodiment of the invention, the fuel supply system further comprises control means for controlling a control valve arranged on the fuel conduit between the additional fuel tank and the main fuel tank and/or for controlling the additional fuel pump for pumping the reserve fuel. The control device may in particular be a control module in a vehicle ECU. When the fuel in the main fuel tank is exhausted, the control valve is opened to enable the spare fuel in the additional fuel tank to flow into the main fuel tank, and/or a drive motor for driving the additional fuel pump is controlled to enable the additional fuel pump to pump the spare fuel into the main fuel tank or to deliver the spare fuel directly to the fuel injection system via the additional fuel supply line.
According to a second aspect of the invention, a vehicle, in particular a passenger car, is provided with a fuel supply system according to the first aspect.
According to a third aspect of the present invention, there is provided a method of supplying fuel to a vehicle engine by means of the fuel supply system of the first aspect, the method comprising the steps of:
-detecting the amount of fuel, in particular the fuel level, in the main fuel tank;
-supplying stored reserve fuel by means of said fuel supply system when the detected fuel quantity is below a threshold value.
The threshold value can be set, for example, to a nominal level at which the main fuel pump can be operated normally, i.e. normally suctioned, which is generally lower than the fuel level in the main fuel tank when the fuel quantity indicator warning is displayed in the vehicle disc.
Further optionally, the method further comprises:
-detecting a driving speed of the vehicle;
-starting to supply the stored reserve fuel when the vehicle is stopped.
The speed of the vehicle can be detected by means of a speed detection device that is present in the vehicle, for example a speed sensor. When the vehicle is brought into emergency stop due to fuel consumption, i.e. the driving speed of the vehicle is gradually reduced until zero, the supply of the reserve fuel stored in the additional fuel tank is started, for example by the control device opening a control valve and/or starting an additional fuel pump, so that the driver can restart the vehicle, driving to a safe position.
Drawings
The principles, features and advantages of the present invention may be better understood by describing the present invention in more detail with reference to the drawings. The drawings include:
FIG. 1 shows a schematic view of a first embodiment of a fuel supply system according to the present invention;
FIG. 2 shows a schematic view of a second embodiment of a fuel supply system according to the present invention;
FIG. 3 shows a schematic diagram of the control principle of a fuel supply system according to the present invention;
fig. 4 shows a flow chart of a first embodiment of the method according to the invention; and
fig. 5 shows a flow chart of a second embodiment of the method according to the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous technical effects to be solved by the present invention more clearly apparent, the present invention will be described in further detail below with reference to the accompanying drawings and at least one exemplary embodiment. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 schematically shows a first embodiment of a fuel supply system 100 according to the invention. The fuel supply system 100 comprises a main fuel tank 1, a main fuel pump 2 arranged in the main fuel tank 1 and a filter connected upstream of the input of the main fuel pump, a fuel supply line 3 and fuel quantity detection means, such as a level sensor L, arranged on the tank inner wall of the main fuel tank 1. In normal driving of the vehicle, fuel is supplied by means of the main fuel pump 2 from the main fuel tank 1 via the fuel supply line 3 to a fuel injection system 4 of the vehicle engine, which here by way of example comprises a fuel distribution rail and four fuel injectors branching off from the fuel distribution rail, each fuel injector for example being used for injecting fuel into one cylinder of the engine. The fuel supply system 100 further comprises an additional fuel tank 5 for storing a reserve fuel. The additional fuel tank 5 is connected to the main fuel tank 1 via a fuel line 6, and a control valve 7 in the form of a solenoid valve is arranged in the fuel line 6. When the fuel in the main fuel tank 1 is exhausted, the spare fuel can be made to flow to the main fuel tank 1 by opening the control valve 7 so as to supply the fuel capable of continuing running, for example, for about 5km, to the vehicle. In addition, when the control valve 7 is opened, the spare fuel in the additional fuel tank 5 can be replenished by filling the main fuel tank 1 with fuel, or the fuel in the additional fuel tank 5 can be exchanged with the fuel in the main fuel tank 1, so that the fuel in the additional fuel tank 5 can be prevented from deteriorating due to long-term non-use.
Fig. 2 schematically shows a second embodiment of a fuel supply system 100 according to the invention. Unlike the fuel supply system 100 shown in fig. 1, the fuel supply system 100 in the second embodiment further includes an additional fuel pump 8. The additional fuel pump 8 is arranged, for example, in the additional fuel tank 5 and a filter is connected upstream of the input. When the fuel in the main fuel tank 1 is exhausted, the standby fuel can be pumped into the main fuel tank 1 quickly by opening the control valve 7 and activating the additional fuel pump 8, so that the "groveling" vehicle can start quickly, driving away from the dangerous location. The additional fuel pump 8 is in particular configured as a transfer pump that can be operated in both directions, in order to be able to perform a reverse operation as required, for example for sucking fuel from the main fuel tank 1, for replenishing the auxiliary fuel in the additional fuel tank 5 or for periodically changing fuel from the main fuel tank 1 as required, in order to ensure the quality of the auxiliary fuel. In addition, another possible embodiment of the fuel supply system 100 is also shown in fig. 2. In this embodiment, the fuel supply system 100 further comprises an additional fuel supply line 9, which is schematically shown in dashed lines in fig. 2, for supplying the reserve fuel directly from the additional fuel tank 5 to the fuel injection system 4 by means of an additional fuel pump 8 via this additional fuel supply line 9, so that a redundant arrangement of the main fuel supply system is achieved. In this way, in addition to the occurrence of fuel depletion in the main fuel tank 1, fuel can be reliably supplied to the vehicle engine by the redundant fuel supply system, for example, even when the main fuel pump 2 fails or the filter of the main fuel pump 2 is clogged. Furthermore, in order to prevent fuel from circulating between the main and redundant fuel supply systems, a non-return valve 10 is also provided in the fuel supply line 3 and the additional fuel supply line 9, respectively.
Fig. 3 shows a schematic diagram of the control principle of the fuel supply system 100 according to the present invention. The fuel amount detecting device shown at the upper left in fig. 3, for example, a liquid level sensor detects the fuel level L in the main fuel tank 1 in real time, and then transmits the fuel level L as an input signal to the control device 11 of the fuel supply system 100, for example, a control module in the vehicle ECU. After analyzing the input signal, the control device 11 determines whether or not the supply of the spare fuel stored in the additional fuel tank 5 is required. When the detected fuel level L fulfils a condition triggering a control, for example the fuel level L is below a nominal level at which the main fuel pump 2 is able to draw in fuel, the control means 11 outputs a control signal to the control valve 7 and/or the additional fuel pump 8 for opening the control valve 7 and/or for starting the additional fuel pump 8. Further, it is also confirmed whether or not the use of the spare fuel is necessary, if necessary, based on the vehicle running speed v inputted from the vehicle speed detecting device shown in the upper right in fig. 3. If the vehicle travel speed v gradually decreases until a vehicle stop occurs, it is determined that the vehicle is "rolling" due to fuel depletion and the fuel supply system 100 must begin to supply stored reserve fuel to the vehicle engine.
Fig. 4 shows a flow chart of a first embodiment of the method according to the invention. According to a first embodiment, the method comprises the steps of:
in step S1, the fuel quantity, in particular the fuel level, in the main fuel tank 1 is detected in real time by means of a fuel quantity detection device, for example a level sensor;
in step S2, it is determined that the stored reserve fuel is required to be supplied when the detected fuel quantity is below a set threshold value, for example, the fuel level is below a rated level at which the main fuel pump 2 can operate normally, in particular the intake fuel.
The fuel supply system 100 may then be ready to supply the spare fuel in the additional fuel tank 5 to the vehicle engine.
Fig. 5 shows a flow chart of a second embodiment of the method according to the invention. This second embodiment differs from the first embodiment in fig. 4 in that after step S2 in the first embodiment, the following steps are also performed:
in step S3, the vehicle running speed v is detected by means of the vehicle speed detection device;
in step S4, when the vehicle running speed v gradually decreases until the vehicle stops, the supply of the stored standby fuel is started.
The use of the reserve fuel provided by the additional fuel tank 5 then enables the driver to restart the vehicle after an emergency stop of the vehicle, in particular to continue driving for example for about 5km, so that the vehicle can be driven away from the current dangerous location.
Although specific embodiments of the invention have been described in detail herein, they are presented for purposes of illustration only and the invention is not limited in its broader aspects to the specific details, representative structures and illustrative examples shown and described. Rather, various modifications and substitutions may be made by those skilled in the art without departing from the basic spirit and scope of the invention.
Claims (10)
1. A fuel supply system (100) for a vehicle, comprising:
-a main fuel tank (1);
-a main fuel pump (2);
-a fuel supply line (3), wherein fuel is delivered from the main fuel tank (1) by means of the main fuel pump (2) via the fuel supply line (3) to a fuel injection system (4) of a vehicle engine; and
-an additional fuel tank (5) for storing a reserve fuel.
2. The fuel supply system (100) of claim 1, wherein,
the additional fuel tank (5) is arranged outside the main fuel tank (1), or
The additional fuel tank (5) is arranged integrally within the main fuel tank (1), in particular separated from the main fuel tank (1) by a partition.
3. The fuel supply system (100) according to any one of claims 1-2, characterized in that,
the additional fuel tank (5) is connected to the main fuel tank (1) by a fuel line (6), wherein a control valve (7), in particular a solenoid valve, is arranged on the fuel line (6).
4. A fuel supply system (100) according to any one of claims 1-3, characterized in that the fuel supply system (100) further comprises an additional fuel pump (8) for pumping fuel from the additional fuel tank (5).
5. The fuel supply system (100) according to claim 4, characterized in that the fuel supply system (100) further comprises an additional fuel supply line (9), the reserve fuel being transported from the additional fuel tank (5) via the additional fuel supply line (9) to the fuel injection system (4) by means of the additional fuel pump (8).
6. The fuel supply system (100) according to any one of claims 1-5, characterized in that a level sensor (L) is arranged in the main fuel tank (1) for detecting the amount of fuel, in particular the fuel level, in the main fuel tank (1).
7. The fuel supply system (100) according to claims 1-6, characterized in that the fuel supply system (100) further comprises a control device (11) for controlling the control valve (7) and/or the additional fuel pump (8).
8. A vehicle, in particular a passenger vehicle, having a fuel supply system (100) according to any one of claims 1 to 7.
9. A method of supplying fuel to a vehicle engine, the method comprising the steps of:
-detecting the amount of fuel, in particular the fuel level, in the main fuel tank (1); and
-supplying the stored reserve fuel by means of the fuel supply system (100) according to any one of claims 1 to 7 when the detected fuel quantity is below a threshold value.
10. The method according to claim 9, wherein the method further comprises:
-detecting a driving speed of the vehicle; and
-starting to supply said reserve fuel when the vehicle is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310572459.8A CN116624299A (en) | 2023-05-19 | 2023-05-19 | Fuel supply system for vehicle and method of supplying fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310572459.8A CN116624299A (en) | 2023-05-19 | 2023-05-19 | Fuel supply system for vehicle and method of supplying fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116624299A true CN116624299A (en) | 2023-08-22 |
Family
ID=87596690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310572459.8A Pending CN116624299A (en) | 2023-05-19 | 2023-05-19 | Fuel supply system for vehicle and method of supplying fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116624299A (en) |
-
2023
- 2023-05-19 CN CN202310572459.8A patent/CN116624299A/en active Pending
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