CN109184975B - Fuel temperature control valve and vehicle fuel temperature control system - Google Patents
Fuel temperature control valve and vehicle fuel temperature control system Download PDFInfo
- Publication number
- CN109184975B CN109184975B CN201811287451.2A CN201811287451A CN109184975B CN 109184975 B CN109184975 B CN 109184975B CN 201811287451 A CN201811287451 A CN 201811287451A CN 109184975 B CN109184975 B CN 109184975B
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- valve
- temperature control
- connector
- joint
- fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 94
- 239000002828 fuel tank Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 16
- 230000006698 induction Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 56
- 238000010586 diagram Methods 0.000 description 5
- 239000002283 diesel fuel Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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
- F02M37/0035—Thermo sensitive valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The utility model relates to the technical field of vehicle fuel systems, and discloses a fuel temperature control valve which comprises a wax-type three-way valve provided with a first joint, a second joint and a third joint which are mutually communicated, wherein a wax-type sensor is arranged in a hole of the first joint, the sensing end of the wax-type sensor extends out of the first joint, the other end of the wax-type sensor is provided with a push rod, the push rod abuts against a valve sliding in the hole of the first joint, the other end of the valve is provided with a first spring abutting against the valve, a first valve port matched with the valve is arranged in the first joint, a pressure valve and a second valve port matched with the pressure valve are arranged in the second joint, and a second spring abutting against the pressure valve inwards is arranged in the second joint. The utility model also discloses a vehicle fuel temperature control system using the fuel temperature control valve. According to the fuel temperature control valve and the vehicle fuel temperature control system, high-temperature return oil is controlled to enter the filter or the fuel tank according to the temperature of fuel in the filter, so that the vehicle performance in winter is improved.
Description
Technical Field
The utility model relates to the technical field of vehicle fuel systems, in particular to a fuel temperature control valve and a vehicle fuel temperature control system.
Background
The fuel system is an indispensable system in normal operation of the engine as a power source of the vehicle, and is mainly used for completing the storage, filtration and transportation of fuel.
When the fuel in the fuel system comes out of the fuel tank, the fuel is filtered by a filter, and then enters the fuel injection system through a fuel pump, a fine filter and a high-pressure oil pump. In winter, the fuel temperature is too low, so that the filter is easy to wax, the fuel of the fuel system cannot circulate normally, and finally the automobile cannot be started.
The Chinese patent application (publication No. 2012: 06/06 and publication No. CN 202266352U) discloses an automatic heating temperature control device for an oil way of a diesel vehicle, which comprises a vehicle-mounted storage battery, an oil way pipe, a diesel filter, a resistance wire and a temperature control switch, wherein a carbon fiber heating wire layer is entrained in the pipe wall of the oil way pipe, and the vehicle-mounted storage battery, the resistance wire, the temperature control switch and the carbon fiber heating wire layer are connected in series to form a loop, wherein the resistance wire and the temperature control switch are arranged in the diesel filter. The automatic heating temperature control device for the diesel oil way can keep the temperature of diesel oil in the diesel oil way in a proper range, and avoid the blockage of the diesel oil way due to solidification and wax precipitation of the diesel oil. However, the utility model heats the oil path by an external heat source, which wastes energy.
Meanwhile, about 50% of the fuel (referred to herein as return oil, the return oil temperature is high, and typically reaches about 100 ℃) in the fuel system is returned to the fuel tank again, so that the high-temperature return oil is cooled in the fuel tank, and this heat cannot be utilized and is wasted.
Disclosure of Invention
The utility model aims to overcome the defects of the technology, and provides a fuel temperature control valve and a vehicle fuel temperature control system, which are used for automatically controlling high-temperature return oil to enter a filter to heat fuel in the filter according to the sensed temperature of fuel in the filter so as to prevent wax precipitation, and simultaneously automatically controlling the high-temperature return oil to enter a fuel tank to enable the high-temperature return oil to dissipate heat after the temperature of the fuel in the filter meets the requirements, so that the fuel in the filter is prevented from overheating, and the performance of the whole vehicle in winter is improved.
In order to achieve the above purpose, the fuel temperature control valve comprises a wax-type three-way valve provided with a first joint, a second joint and a third joint which are mutually communicated, wherein the first joint, the second joint and the third joint are all provided with holes, a wax-type sensor is arranged in each hole of the first joint and can sense temperature, the sensing end of the wax-type sensor extends out of the first joint, the other end of the wax-type sensor is provided with a push rod, the push rod props against a valve sliding in each hole of the first joint, the wax-type sensor and the push rod are power sources for sliding of the valve in the first joint, the other end of the valve is provided with a first spring propping against the valve, the first spring supports and returns the valve, and a first valve port matched with the valve is arranged in the first joint; the second connector is internally provided with a pressure valve and a second valve port matched with the pressure valve, the second connector is internally provided with a second spring which is propped against the pressure valve inwards, and the pressure valve is supported and sealed under the action of the second spring.
Preferably, the first valve port is a groove formed on the inner wall of the first joint, the cross-sectional area of the side, matched with the sliding section of the valve, of the groove is gradually increased outwards along the central axis direction of the first joint, and the number of the grooves is at least one.
Preferably, an exhaust channel is arranged in the valve wall of the wax-type three-way valve, an air inlet and an air outlet of the exhaust channel are respectively positioned at two sides of the second valve port, the air outlet is communicated with the second joint, and the air inlet is positioned at the highest point of the junction of the three joints when the wax-type three-way valve is horizontally placed, so that air can be conveniently discharged from the second joint.
Preferably, one side of the groove matched with the valve sliding section is of a step structure, and the groove extends outwards along the central axis direction of the first joint and is flush with the end part of the first joint.
Preferably, the second connector is in threaded connection with a connector, and the second spring abuts against the connector.
Preferably, an end cover is installed at the end part of the first joint in an interference mode, the end cover abuts against the wax-type inductor and plays a supporting role on the wax-type inductor, a first sealing ring is arranged between the end cover and the third joint in a cushioning mode, and a third sealing ring is arranged on the periphery of the end cover to achieve sealing.
Preferably, a push rod hole is formed in the valve, and the push rod abuts against the push rod hole, so that the positioning accuracy of the valve is improved.
Preferably, a second sealing ring is arranged between the joint and the second joint in a cushioning way to realize sealing.
The utility model provides a vehicle fuel system temperature control system, includes engine, oil return change over valve, fuel tank, oil feed change over valve, filter and the transfer pump that the end closed loop connects in proper order, still includes the fuel temperature control valve, the first joint of fuel temperature control valve with the filter is connected, the second joint of fuel temperature control valve with the oil return change over valve is connected, the third joint of fuel temperature control valve with the engine oil return mouth is connected, wax formula inductor in the first joint is through the response the temperature of fuel in the filter, control whether the push rod promotes the valve, and then control by the high temperature oil return that the third joint inflow gets into the filter and heats for the filter internal combustion oil, or gets into the fuel tank and let high temperature oil return heat dissipation.
Compared with the prior art, the utility model has the following advantages:
1. the temperature of fuel oil in the filter sensed by the wax sensor automatically controls the high-temperature return oil to enter the filter to heat the fuel oil in the filter so as to prevent wax precipitation, and simultaneously, after the temperature of the fuel oil in the filter meets the requirement, the high-temperature return oil is automatically controlled to enter the fuel tank so as to enable the high-temperature return oil to dissipate heat, so that the fuel oil in the filter is prevented from overheating, and the performance of the whole vehicle in winter is improved;
2. the slow closing of the groove can be realized through the change of the cross section area of the groove, so that the high-temperature oil return flow is slowly reduced or increased, the internal oil resistance is gradually changed instead of transient, and finally the stability of an internal fuel system is achieved;
3. through the combination of the valve and the first valve port, when the wax-type sensor does not work, the first valve port is in an open state, and when the wax-type sensor works, the first valve port is gradually closed along with the temperature rise of the fuel in the filter, and the realization of the valve function is opposite to that of a common temperature control valve, so that a reverse valve is realized;
4. through the arrangement of the exhaust channel and the air inlet hole, air mixed in the high-temperature return oil is conveniently discharged to the fuel tank, and the air is prevented from entering the filter;
5. by arranging the first spring and the second spring, the automatic return of the valve and the pressure valve is realized.
Drawings
FIG. 1 is a schematic diagram of a fuel temperature control valve according to the present utility model;
FIG. 2 is a schematic diagram of the structure of the fuel temperature control valve according to the present utility model when the high temperature return oil flows to the filter;
FIG. 3 is a schematic diagram of a fuel temperature control valve according to the present utility model;
FIG. 4 is a schematic diagram of the structure of the fuel temperature control valve of the present utility model when high temperature return oil flows to the fuel tank;
FIG. 5 is a schematic diagram of a vehicle fuel temperature control system according to the present utility model.
The reference numerals of the components in the drawings are as follows:
the valve comprises a first connector 1, a second connector 2, a third connector 3, a wax-type three-way valve 4, a wax-type sensor 5, a push rod 6, a valve 7, a first spring 8, a pressure valve 9, a second valve port 10, a second spring 11, a groove 12, an air inlet hole 13, a connector 14, an end cover 15, a first sealing ring 16, a third sealing ring 17, a push rod hole 18 and a second sealing ring 19.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1, the fuel temperature control valve comprises a wax-type three-way valve 4 provided with a first joint 1, a second joint 2 and a third joint 3 which are mutually communicated, wherein a wax-type sensor 5 is arranged in a hole of the first joint 1, the sensing end of the wax-type sensor 5 extends out of the first joint 1, the other end of the wax-type sensor 5 is provided with a push rod 6, the push rod 6 is propped against a valve 7 sliding in the hole of the first joint 1, the valve 7 is provided with a push rod hole 18, the push rod 6 is propped against the push rod hole 18, the other end of the valve 7 is provided with a first spring 8 propped against the valve 7, and the first joint 1 is internally provided with a first valve port matched with the valve 7; the second joint 2 is internally provided with a pressure valve 9 and a second valve port 10 matched with the pressure valve 9, and the second joint 2 is internally provided with a second spring 11 which is propped against the pressure valve 9 inwards.
As shown in fig. 2, the first valve port is a groove 12 formed on the inner wall of the first connector 1, the cross-sectional area of the side of the groove 12 matched with the sliding section of the valve 7 gradually increases outwards along the central axis direction of the first connector 1, in this embodiment, the number of the grooves 12 is two, and the side of the groove 12 matched with the sliding section of the valve 7 is in a step structure, and the groove 12 extends outwards along the central axis direction of the first connector 1 and is flush with the end of the first connector 1.
In addition, as shown in fig. 2, an exhaust passage is opened in the valve wall of the wax-type three-way valve 4, an air inlet hole 13 and an air outlet hole of the exhaust passage are respectively positioned at two sides of the second valve port 10, the air outlet hole is communicated with the second joint 2, and the air inlet hole 13 is positioned at the highest point of the junction of the three joints when the wax-type three-way valve 4 is horizontally placed, so that air mixed in high-temperature return oil is conveniently discharged to a fuel tank, and the air is prevented from entering a filter.
In this embodiment, the second connector 2 is in threaded connection with the connector 14, a second sealing ring 19 is filled between the connector 14 and the second connector 2, the connector 14 is connected with a pipeline of a fuel tank, the second spring 11 is propped against the connector 14, the end part of the first connector 1 is in interference fit with the end cover 15, the end cover 15 is propped against the wax sensor 5, the wax sensor 5 is supported, a first sealing ring 16 is filled between the end cover 15 and the first connector 1, the sealing between the end cover 15 and the first connector 1 is realized, a third sealing ring 17 is arranged on the periphery of the end cover 15, and when the first connector 1 is connected with a filter, the radial sealing between the first connector 1 and the filter is realized.
As shown in fig. 5, the temperature control system of the vehicle fuel system comprises an engine, an oil return switching valve, a fuel tank, an oil inlet switching valve, a filter and an oil delivery pump which are sequentially connected in a closed loop mode from beginning to end, and further comprises a fuel temperature control valve, wherein a first connector 1 of the fuel temperature control valve is connected with the filter, a second connector 2 of the fuel temperature control valve is connected with the oil return switching valve, and a third connector 3 of the fuel temperature control valve is connected with an oil return port of the engine.
In the embodiment, two high-temperature oil return flow paths are formed by the first joint 1, the second joint 2 and the third joint 3 in cooperation with the valve 7 and the pressure valve 9, the first path is a high-temperature oil return flow path to the filter, the temperature of fuel in the filter is increased, the second path is a high-temperature oil return flow path to the fuel tank, and the high-temperature oil return is led to remove heat from the fuel tank.
The specific working principle is as follows:
because the fuel in the filter comes from the fuel tank, the temperature of the fuel in the filter is basically consistent with the temperature of the fuel in the fuel tank, after the assembly of the embodiment is completed, the wax-type sensor 5 stretches into the filter to sense the temperature of the fuel, as shown in fig. 1, when the temperature of the fuel in the filter is too low, the temperature of the fuel in the embodiment is lower than 30 ℃, the wax-type sensor 5 is not opened, at the moment, the first spring 8 props against the valve 7, the valve 7 is positioned at the widest part of the groove 12, the groove 12 is in an open state, meanwhile, the second spring 11 props against the pressure valve 9, the pressure valve 9 is closed, high-temperature return oil of the engine up to about 100 ℃ enters the wax-type three-way valve 4 through the third joint 3, then flows out of the first joint 1 through the groove 12 and enters the filter, at the moment, the high-temperature return oil is mixed with low-temperature fuel in the filter, and finally the effect of improving the temperature of the fuel is realized, so that the fuel economy is improved;
when the temperature of fuel in the filter is gradually increased, as shown in fig. 3, the wax sensor 5 is gradually opened, the push rod 6 pushes the valve 7 to slide inwards in the first joint 1, and as the cross section area of the side, matched with the sliding section of the valve 7, of the groove 12 is gradually increased outwards, namely gradually decreased inwards along the central axis direction of the first joint 1, the groove 12 is gradually closed, the flow rate of high-temperature return oil flowing out of the first joint 1 into the filter through the groove 12 is gradually decreased, meanwhile, under the action of oil pressure, the pressure valve 9 is gradually opened, the high-temperature return oil flows out of the second joint 2 after passing through the pressure valve 9, and enters the fuel tank for heat dissipation, and the flow rate is gradually increased;
when the temperature of the fuel in the filter is too high, in this embodiment, the temperature is higher than 40 ℃, as shown in fig. 4, the fuel in the filter no longer needs high-temperature return oil to raise the temperature, because the fuel in the filter is at a higher temperature, the wax sensor 5 reaches a fully opened state, the push rod 6 pushes the valve 7 to slide inwards in the first joint to a limit position, the push rod 6 pushes the valve 7 out of the groove 12, the groove 12 is in a closed state, the high-temperature return oil of the engine enters the wax three-way valve 4 through the third joint 3 and does not flow to the filter any more, the pressure valve 9 is fully opened under the action of oil pressure, and the high-temperature return oil flows out of the second joint 2 after all passing through the pressure valve 9, and enters the heat dissipation fuel tank.
Because the cross section area of the sliding section matched side of the groove 12 and the valve 7 is gradually increased outwards, namely is gradually reduced inwards along the central axis direction of the first joint 1, when the temperature of fuel in the filter changes, the valve 7 slides in the first joint 1, the groove 12 can be slowly opened or closed, the flow of high-temperature return oil changes slowly, the internal oil resistance gradually changes instead of transient, and finally the internal fuel system is stable.
The working principle of the temperature control system of the vehicle fuel system is shown in fig. 5, one path of high-temperature return oil flowing out of the engine directly enters the fuel tank through the return oil switching valve, the other path of high-temperature return oil enters the fuel temperature control valve through the third joint 3, when the temperature of fuel in the filter is too low, the high-temperature return oil enters the filter through the first joint 1 to heat the fuel in the filter, when the temperature of the fuel in the filter is gradually increased, the valve 7 is controlled through the wax-type sensor 5, so that the flow of the high-temperature return oil flowing into the fuel tank is gradually increased, the flow of the high-temperature return oil flowing into the filter is reduced, and the flow of the high-temperature return oil flowing into the fuel temperature control valve fully flows into the fuel tank until the temperature of the fuel in the filter is too high.
According to the fuel temperature control valve and the vehicle fuel temperature control system, the wax-type sensor 5 is applied to the fuel system, so that high-temperature return oil is automatically controlled to enter the filter or the fuel tank, the fuel in the filter is heated, or the high-temperature return oil is cooled to remove the fuel tank, the control of the fuel temperature is realized, and the winter whole vehicle performance is improved; the slow closing of the groove 12 can be realized through the change of the cross section area of the groove 12, so that the flow is slowly reduced, the internal oil resistance is gradually changed instead of transient, and finally the internal fuel system is stable; and through the combination of valve 7 and recess 12, recess 12 is in the open state when wax-type inductor 5 is inoperative, and recess 12 is in the closed state when wax-type inductor 5 is operative, and the realization of the function of valve 7 is contrary with general temperature-sensing valve, has realized reverse valve.
Claims (8)
1. The utility model provides a fuel temperature control valve, is including being equipped with first joint (1), second joint (2) and the wax formula three-way valve (4) of third joint (3) that link up each other, its characterized in that: the device comprises a first connector (1), wherein a wax-type inductor (5) is arranged in the hole of the first connector (1), the induction end of the wax-type inductor (5) extends out of the first connector (1), a push rod (6) is arranged at the other end of the wax-type inductor (5), the push rod (6) is propped against a valve (7) sliding in the hole of the first connector (1), a first spring (8) propping against the valve (7) is arranged at the other end of the valve (7), a first valve port matched with the valve (7) is arranged in the first connector (1), a pressure valve (9) and a second valve port (10) matched with the pressure valve (9) are arranged in the second connector (2), a second spring (11) propping against the pressure valve (9) inwards is arranged in the second connector (2), the first valve port is propped against a groove (12) arranged on the inner wall of the first connector (1), the cross section area of one side matched with the sliding section of the valve (7) is gradually increased along the first axis (1), and the number of the grooves is gradually increased outwards along the first axis (12).
2. The fuel temperature control valve according to claim 1, characterized in that: an exhaust channel is formed in the valve wall of the wax-type three-way valve (4), an air inlet (13) and an air outlet of the exhaust channel are respectively positioned at two sides of the second valve port (10), the air outlet is communicated with the second joint (2), and the air inlet (13) is positioned at the highest point of the junction of the three joints when the wax-type three-way valve (4) is horizontally placed.
3. The fuel temperature control valve according to claim 2, characterized in that: the groove (12) and one side of the valve (7) matched with the sliding section are of a step structure, and the groove (12) extends outwards along the central axis direction of the first connector (1) to be flush with the end part of the first connector (1).
4. A fuel thermo valve as claimed in claim 3, characterised in that: the second connector (2) is in threaded connection with a connector (14), and the second spring (11) abuts against the connector (14).
5. The fuel temperature control valve according to claim 4, characterized in that: the end part of the first connector (1) is provided with an end cover (15) in an interference mode, the end cover (15) props against the wax type inductor (5), a first sealing ring (16) is arranged between the end cover (15) and the first connector (1), and a third sealing ring (17) is arranged on the periphery of the end cover (15).
6. The fuel temperature control valve according to claim 5, characterized in that: the valve (7) is provided with a push rod hole (18), and the push rod (6) is propped against the push rod hole (18).
7. The fuel temperature control valve according to claim 6, characterized in that: a second sealing ring (19) is arranged between the joint (14) and the second joint (2).
8. The utility model provides a vehicle fuel system temperature control system, includes engine, oil return change over valve, fuel tank, oil feed change over valve, filter and the delivery pump that end to end closed loop connects gradually, its characterized in that: the fuel temperature control valve is characterized by further comprising the fuel temperature control valve according to claim 1, wherein a first connector (1) of the fuel temperature control valve is connected with the filter, a second connector (2) of the fuel temperature control valve is connected with the return oil switching valve, and a third connector (3) of the fuel temperature control valve is connected with the engine return oil port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811287451.2A CN109184975B (en) | 2018-10-31 | 2018-10-31 | Fuel temperature control valve and vehicle fuel temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811287451.2A CN109184975B (en) | 2018-10-31 | 2018-10-31 | Fuel temperature control valve and vehicle fuel temperature control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109184975A CN109184975A (en) | 2019-01-11 |
| CN109184975B true CN109184975B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811287451.2A Active CN109184975B (en) | 2018-10-31 | 2018-10-31 | Fuel temperature control valve and vehicle fuel temperature control system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112796899A (en) * | 2020-12-31 | 2021-05-14 | 河北中瓷电子科技股份有限公司 | A fuel filter control device |
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