CN113790114A - Fuel filter's two oil tank oil circuit switched systems - Google Patents

Fuel filter's two oil tank oil circuit switched systems Download PDF

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Publication number
CN113790114A
CN113790114A CN202111295234.XA CN202111295234A CN113790114A CN 113790114 A CN113790114 A CN 113790114A CN 202111295234 A CN202111295234 A CN 202111295234A CN 113790114 A CN113790114 A CN 113790114A
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CN
China
Prior art keywords
oil
filter
tank
main
channel
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Pending
Application number
CN202111295234.XA
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Chinese (zh)
Inventor
曹学明
黄小虎
范新军
马业存
秦根华
程立
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Anhui Weil Low Carbon Technology Co ltd
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Anhui Weil Low Carbon Technology Co ltd
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Application filed by Anhui Weil Low Carbon Technology Co ltd filed Critical Anhui Weil Low Carbon Technology Co ltd
Priority to CN202111295234.XA priority Critical patent/CN113790114A/en
Publication of CN113790114A publication Critical patent/CN113790114A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/42—Installation or removal of filters
    • 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
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/48—Filters structurally associated with fuel valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03236—Fuel tanks characterised by special filters, the mounting thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention discloses a double-oil-tank oil-way switching system of a fuel filter, which comprises a secondary oil-tank filter, a main oil-tank filter, a conversion valve component and a filter tank component, wherein the inner end of an oil inlet of the main oil-tank filter and the oil outlet of the main oil-tank filter are connected to the main oil-tank filter; the inner ends of the oil outlet of the filter of the main oil tank and the oil outlet of the filter of the auxiliary oil tank are connected to an oil supply port of an engine through an oil supply change-over valve of the main oil tank and the auxiliary oil tank, and an oil return port of the engine is connected to the inner ends of the oil return port of the filter of the main oil tank and the oil return port of the filter of the auxiliary oil tank through an oil return change-over valve of the main oil tank and the auxiliary oil tank. The double-oil-tank oil-way switching system of the fuel filter has the advantages of compact structure, high integration degree, low leakage risk, low production cost, reduction of valve clamping risk, high switching efficiency and reduction of the risk of incapability of starting an engine due to oil mixing at low temperature.

Description

Fuel filter's two oil tank oil circuit switched systems
Technical Field
The invention relates to the technical field of fuel filters, in particular to a double-oil-tank oil-way switching system of a fuel filter.
Background
At present, a double-oil-tank scheme is adopted for transport vehicles in cold areas, a main oil tank is filled with high-grade diesel oil, an auxiliary oil tank is filled with low-grade diesel oil, the auxiliary oil tank is started at low temperature by using the low-grade diesel oil, after a period of time, fuel oil in the main oil tank is heated by vehicle circulating liquid, the auxiliary oil tank is switched to the main oil tank by a switching valve, and the high-grade diesel oil in the main oil tank is used, so that the transport cost is reduced.
At present, for realizing the switching of double oil tanks, a main oil tank switching valve and an auxiliary oil tank switching valve are connected in series with a fuel filter to an oil path, as shown in fig. 1, a main oil tank fuel supply pipe 1 and an auxiliary oil tank fuel supply pipe 2 are connected to a main oil tank fuel inlet pipe 3 and an auxiliary oil tank fuel inlet pipe 4 corresponding to a switching valve, the use of fuel oil in the oil tank is controlled by the switching valve, the fuel oil enters a filter oil inlet 6 through a switching valve oil outlet 5 after being controlled by the switching valve, the fuel oil enters an engine fuel supply port 8 through a filter oil outlet 7 after being filtered, the fuel oil which is not consumed enters a switching valve oil return port 10 through an engine oil return port 9, and the fuel oil in the main oil tank returns to a main oil tank 12 through a switching valve main oil tank oil return port 11 according to the control of the switching valve, or the fuel oil in the auxiliary oil tank returns to an auxiliary oil tank 14 through an auxiliary oil return port 13.
This approach has the following disadvantages: 1) the connector is many, reveals the risk height. 2) The fuel is not filtered, and impurities in the fuel can cause the change-over valve to be stuck and invalid, so that the main fuel tank and the auxiliary fuel tank cannot be switched. 3) The fuel oil in the main oil tank and the fuel oil in the auxiliary oil tank pass through the filter, if the fuel oil in the main oil tank is not emptied before stopping, the filter can be blocked at low temperature, and the vehicle cannot be started. 4) The assembly is complicated, the installation space is large, and the production cost is high.
Disclosure of Invention
The invention aims to: the double-oil-tank oil way switching system of the fuel filter is provided to solve the defects.
In order to achieve the above purpose, the invention provides the following technical scheme:
a double-oil-tank oil-way switching system of a fuel filter comprises an auxiliary oil tank filter, a main oil tank filter, a conversion valve component and a filter tank component arranged between the auxiliary oil tank filter and the main oil tank filter; the conversion valve component comprises a main and auxiliary oil tank oil supply conversion valve and a main and auxiliary oil tank oil return conversion valve, and a main oil tank filter oil inlet, an auxiliary oil tank filter oil inlet, an engine oil supply port, an engine oil return port, a main oil tank filter oil return port, an auxiliary oil tank filter oil return port, a main oil tank filter oil outlet and an auxiliary oil tank filter oil outlet are formed in the outer wall of the filter tank component; the inner end of the oil inlet of the main oil tank filter and the outer end of the oil outlet of the main oil tank filter are both connected to the main oil tank filter, and the inner end of the oil inlet of the auxiliary oil tank filter and the outer end of the oil outlet of the auxiliary oil tank filter are both connected to the auxiliary oil tank filter; the inner ends of the oil outlet of the filter of the main oil tank and the oil outlet of the filter of the auxiliary oil tank are connected to an oil supply port of an engine through an oil supply change-over valve of the main oil tank and the auxiliary oil tank, and an oil return port of the engine is connected to the oil return port of the filter of the main oil tank and the inner end of the oil return port of the filter of the auxiliary oil tank through an oil return change-over valve of the main oil tank and the auxiliary oil tank.
Preferably, a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel and an eighth channel are arranged in the filter tank assembly, the inner end of an oil inlet of the main oil tank filter is connected with the main oil tank filter through the first channel, and the inner end of an oil inlet of the auxiliary oil tank filter is connected with the auxiliary oil tank filter through the second channel; the inner ends of the oil outlet of the filter of the main oil tank and the oil outlet of the filter of the auxiliary oil tank are respectively connected to an oil supply conversion valve of the main oil tank and the auxiliary oil tank through a third channel and a fourth channel, and the oil supply conversion valve of the main oil tank and the auxiliary oil tank is connected to an oil supply port of an engine through a fifth channel; the engine oil return port is connected to the main and auxiliary oil tank oil return conversion valve through a sixth channel, the main and auxiliary oil tank oil return conversion valve is connected to the inner end of the main oil tank filter oil return port through a seventh channel, and the main and auxiliary oil tank oil return conversion valve is connected to the inner end of the auxiliary oil tank filter oil return port through an eighth channel.
Preferably, still include electric pump assembly, the last cavity that links to each other with the canister subassembly that is provided with of electric pump assembly, two parts about the cavity passes through electric pump assembly sealing washer and separates into, the lower part of cavity links to each other with the fifth passageway, the upper portion and the engine of cavity supply oil port and link to each other.
Preferably, a one-way valve assembly is arranged in the fifth passage, a one-way valve is arranged in the one-way valve assembly and is sealed, a ninth passage is arranged inside the canister assembly, and the main and auxiliary oil tank oil supply conversion valve is connected to the lower portion of the cavity through the ninth passage.
Preferably, the oil supply conversion valve of the main oil tank and the auxiliary oil tank is provided with two conversion valve assembly oil inlets and a conversion valve oil outlet, the two conversion valve assembly oil inlets are respectively connected with the third channel and the fourth channel, and the conversion valve oil outlet is connected with the fifth channel and the ninth channel; and the main and auxiliary oil tank oil return conversion valve is provided with a conversion valve assembly oil return inlet and two conversion valve oil return outlets, the conversion valve assembly oil return inlet is connected with the sixth channel, and the two conversion valve oil return outlets are respectively connected with the seventh channel and the eighth channel.
Preferably, the filter tank assembly is provided with a mounting and fixing support assembled with the whole vehicle, the mounting and fixing support and the filter tank assembly are integrally formed, and the mounting and fixing support is provided with four mounting holes.
Preferably, the main oil tank filter comprises a main filter lower cover, a main filter element upper end cover, a main filter element lower end cover, a main filter element, a central tube and an air duct, wherein the main filter lower cover is made of TPU material, and the main filter lower cover is connected with the filter tank assembly through threads; the main filter element is connected with the main filter element upper end cover, the main filter element lower end cover, the central tube and the air duct through glue injection.
Preferably, a water level sensor is arranged in the main oil tank filter, the water level sensor is arranged at the lower part of a lower cover of the main oil tank filter, and the water level sensor is of a float type or an electrode type; an electric heater is arranged in the main oil tank filter and is arranged at the upper part of the lower cover of the main oil tank filter.
Preferably, the inner surface of the lower cover of the main filter is provided with inner limiting ribs which are longitudinally arranged, the main filter element is of a detachable structure, and the upper end cover of the main filter element is clamped with the first channel; and the lower end cover of the main filter element is clamped with the limiting rib of the lower cover of the main filter.
Preferably, the auxiliary oil tank filter comprises an auxiliary filter upper cover, an auxiliary filter element upper end cover, an auxiliary filter element lower end cover, an auxiliary central tube and an auxiliary air duct; and a water drain valve is also arranged on the auxiliary oil tank filter.
The invention has the beneficial effects that:
according to the double-oil-tank oil-way switching system of the fuel oil filter, the auxiliary oil tank filter, the conversion valve component and the main oil tank filter are respectively integrated at the upper, middle and lower positions of the filter tank component, so that the product structure is more compact, the mounting steps of the whole vehicle are reduced, and the loading manufacturability is improved; meanwhile, a connecting pipeline between the switching valve and the filter is eliminated, so that the use of joints is reduced, sealing points are reduced, and leakage risk is reduced; the fuel oil is filtered and then passes through the change-over valve, so that the risk of valve clamping of the change-over valve is reduced; the main oil tank filter and the auxiliary oil tank filter separately filter different fuel oil, and the risk of incapability of starting due to low-temperature oil mixing is reduced. The double-oil-tank oil-way switching system of the fuel filter has the advantages of compact structure, high integration degree, few joints and low leakage risk; the filter element is replaceable, and the production cost is low; the filtering and switching are realized, the valve clamping risk is reduced, and the switching efficiency is high; the main and auxiliary oil tanks are respectively filtered, so that the risk that the engine cannot be started due to oil mixing at low temperature is reduced.
Drawings
FIG. 1: the structure of the fuel filter in the prior art is schematic;
FIG. 2: the structure front view of the invention;
FIG. 3: structure right view of the invention;
FIG. 4: structure left view of the invention;
FIG. 5: structural rear view of the invention;
FIG. 6: the internal structure of the invention is schematically shown as a first (front view direction);
FIG. 7: the internal structure of the invention is shown schematically in the second (right view direction);
FIG. 8: the internal structure of the invention is schematically shown in a third diagram (the main view direction);
FIG. 9: the internal structure of the invention is schematically shown in figure four (the main viewing direction).
Detailed Description
The following description of the embodiments of the present invention is made with reference to the accompanying drawings 1 to 9:
as shown in fig. 1 to 9, a dual tank oil path switching system of a fuel filter is characterized by comprising a secondary tank filter 10, a main tank filter 20, an electric pump assembly 30, a switching valve assembly 40, and a canister assembly 50 disposed between the secondary tank filter 10 and the main tank filter 20.
The outer wall of the filter tank assembly 50 is provided with a main oil tank filter oil inlet 101, a secondary oil tank filter oil inlet 102, an engine oil supply port 103, an engine oil return port 104, a main oil tank filter oil return port 105, a secondary oil tank filter oil return port 106, a main oil tank filter oil outlet 107 and a secondary oil tank filter oil outlet 108.
The change-over valve assembly 40 comprises a main and auxiliary oil tank oil supply change-over valve 41 and a main and auxiliary oil tank oil return change-over valve 42, wherein the inner end of an oil inlet 101 of a main oil tank filter and the outer end of an oil outlet 107 of the main oil tank filter are both connected to the main oil tank filter 20, and the inner end of an oil inlet 102 of the auxiliary oil tank filter and the outer end of an oil outlet 108 of the auxiliary oil tank filter are both connected to the auxiliary oil tank filter 10; the inner ends of the main oil tank filter oil outlet 107 and the auxiliary oil tank filter oil outlet 108 are connected to the engine oil supply port 103 through a main and auxiliary oil tank supply changeover valve 41, and the engine oil return port 104 is connected to the inner ends of the main oil tank filter oil return port 105 and the auxiliary oil tank filter oil return port 106 through a main and auxiliary oil tank return changeover valve 42.
A first channel 201, a second channel 202, a third channel 203, a fourth channel 204, a fifth channel 205, a sixth channel 206, a seventh channel 207, an eighth channel 208 and a ninth channel 209 are arranged in the filter tank assembly 50, the inner end of an oil inlet 101 of the main oil tank filter is connected with the main oil tank filter 20 through the first channel 201, and the inner end of an oil inlet 102 of the auxiliary oil tank filter is connected with the auxiliary oil tank filter 10 through the second channel 202; the inner ends of the main oil tank filter oil outlet 107 and the auxiliary oil tank filter oil outlet 108 are respectively connected to the main and auxiliary oil tank oil supply conversion valve 41 through a third channel 203 and a fourth channel 204, and the main and auxiliary oil tank oil supply conversion valve 41 is connected to the engine oil supply port 103 through a fifth channel 205; the engine return 104 is connected to the primary and secondary tank return diverter valve 42 via a sixth passage 206 and the primary and secondary tank return diverter valve 42 is connected to the inner end of the primary tank filter return 105 via a seventh passage 207 and to the inner end of the secondary tank filter return 106 via an eighth passage 208.
The electric pump assembly 30 is provided with a cavity 51 connected with the canister assembly 50, the cavity 51 is divided into an upper part and a lower part by the electric pump assembly sealing ring 31, the lower part of the cavity 51 is connected with the fifth channel 205, and the upper part of the cavity 51 is connected with the engine oil supply port 103.
A check valve assembly 70 is provided in the fifth passage 205, a check valve 71 is provided in the check valve assembly 70 and sealed, and the main-to-sub tank oil supply switching valve 41 is connected to a lower portion of the chamber 51 through a ninth passage 209.
The main and auxiliary oil tank oil supply conversion valve 41 is provided with two conversion valve assembly oil inlets 109 and a conversion valve oil outlet 110, the two conversion valve assembly oil inlets 109 are respectively connected with the third channel 203 and the fourth channel 204, and the conversion valve oil outlet 110 is connected with the fifth channel 205 and the ninth channel 209; the main-auxiliary oil tank return switching valve 42 is provided with a switching valve assembly return oil inlet 111 and two switching valve return oil outlets 112, the switching valve assembly return oil inlet 111 is connected with the sixth passage 206, and the two switching valve return oil outlets 112 are respectively connected with the seventh passage 207 and the eighth passage 208.
The canister assembly 50 is provided with a mounting and fixing support 60 assembled with the whole vehicle, the mounting and fixing support 60 and the canister assembly 50 are integrally formed, and the mounting and fixing support 60 is provided with four mounting holes 61.
The main oil tank filter 20 comprises a main filter lower cover 21, a main filter element upper end cover 23, a main filter element lower end cover 24, a main filter element 25, a central tube 26 and an air duct 27, wherein the main filter lower cover 21 is made of TPU (thermoplastic polyurethane) material, is transparent and visible, can observe the internal condition of the filter constantly, can be recycled, can realize light weight and reduce energy consumption, and is high in material recycling degree, and after the TPU material is matched with an aluminum alloy material, the TPU material is not easy to clamp and convenient to disassemble; the main filter lower cover 21 is connected with the filter tank assembly 50 through threads, namely, the main filter lower cover 21 is provided with external threads, and the filter tank assembly 50 is provided with internal threads; the main filter element 25 is connected with the main filter element upper end cover 23, the main filter element lower end cover 24, the central tube 26 and the air duct 27 through glue injection.
A water level sensor 80 is arranged in the main oil tank filter 20, the water level sensor 80 is arranged at the lower part of the lower cover 21 of the main oil tank filter, and the water level sensor 80 is of a float type or an electrode type and has a water discharging function; an electric heater 22 is arranged in the main oil tank filter 20, the electric heater 22 is arranged at the upper part of the lower cover 21 of the main oil tank filter, and the PTC resistor is adopted to realize the temperature automatic control.
The inner surface of the lower cover 21 of the main filter is provided with inner limiting ribs 301 which are longitudinally arranged, the inner limiting ribs 301 provide support for the main filter element 25, and the deformation resistance of the lower cover 21 is improved; the main filter element 25 is of a detachable structure, and only the main filter element 25 needs to be replaced after the main filter element 25 reaches the service life; the main filter element upper end cover 23 is clamped with the first channel 201; the lower end cover 24 of the main filter element is clamped with the limiting rib 301 of the lower cover 21 of the main filter cleaner; when the old filter element 25 with the service life reaching the end is disassembled, the thread of the lower cover 21 of the main filter is unscrewed, and the main filter element 25 is taken out after being drawn downwards; when assembling a new main filter element 25, the main filter element 25 is first inserted into the mating cavity of the first passage 201, and the main filter lower cover 21 is then assembled to the canister assembly 50.
The auxiliary tank filter 10 and the main tank filter 20 are disposed at upper and lower positions of the canister assembly 50, and the auxiliary tank filter 10 is identical to the main tank filter 20 in all the structures except for the absence of electric heating and a water level sensor. The auxiliary oil tank filter 10 comprises an auxiliary filter upper cover 11, an auxiliary filter element 12, an auxiliary filter element upper end cover 13, an auxiliary filter element lower end cover 14, an auxiliary central tube 15 and an auxiliary air duct 16, and the auxiliary oil tank filter 10 is also provided with a water drain valve 90. The specific structure, mounting method, and the like of the sub-tank filter 10 can be referred to the main tank filter 20.
The invention relates to a double-oil-tank oil-way switching system of a fuel filter, which has the working principle that:
the oil path trend of the main oil tank during working is as follows: after passing through the main tank filter oil inlet 101, the first channel 201 and the main tank filter 20 in the canister assembly 50, the fuel oil passes through the third channel 203 and the change-over valve assembly oil inlet 109 along the main tank filter oil outlet 107, then passes through the fifth channel 205 and the canister assembly upper engine oil supply port 103 along the change-over valve oil outlet 110, enters the engine, and the engine return oil flows in through the canister assembly upper engine oil return port 104, passes through the sixth channel 206 and the change-over valve assembly oil return inlet 111, and then flows into the main tank along the conversion method oil return outlet 112 through the seventh channel 207 and the canister assembly main tank filter oil return port 105.
The oil way trend of the auxiliary oil tank during working is as follows: the fuel oil enters the secondary oil tank filter 10 through the secondary oil tank filter oil inlet 102 through the second channel 202 in the filter tank assembly 50, then passes through the fourth channel 204 and the change-over valve assembly oil inlet 109 along the secondary oil tank filter oil outlet 108, then passes through the fifth channel 205 and the filter tank assembly upper engine oil supply port 103 along the change-over valve oil outlet 110, and the engine return oil flows in through the filter tank assembly upper engine oil return port 104, passes through the sixth channel 206 and the change-over valve assembly oil return inlet 111, and then flows into the secondary oil tank through the change-over valve oil return outlet 112 and the filter tank assembly secondary oil tank filter oil return port 106 through the eighth channel 208.
According to the double-oil-tank oil-way switching system of the fuel oil filter, the auxiliary oil tank filter 10, the switching valve assembly 40 and the main oil tank filter 20 are respectively integrated at the upper, middle and lower positions of the filter tank assembly 50, so that the product structure is more compact, the mounting steps of the whole vehicle are reduced, and the loading manufacturability is improved; meanwhile, a connecting pipeline between the switching valve and the filter is eliminated, so that the use of joints is reduced, sealing points are reduced, and leakage risk is reduced; the fuel oil is filtered and then passes through the change-over valve, so that the risk of valve clamping of the change-over valve is reduced; the main oil tank filter and the auxiliary oil tank filter separately filter different fuel oil, and the risk of incapability of starting due to low-temperature oil mixing is reduced.
The double-oil-tank oil-way switching system of the fuel filter has the following specific beneficial effects:
(1) connecting pipelines between the switching valve and the filter are omitted, the use of joints is reduced, sealing points are reduced, and leakage risks are reduced; the material cost and the manufacturing cost are saved, and the pressure loss is reduced;
(2) the lower covers are made of TPU materials, so that the product design is light, and the energy consumption is reduced; the recycling degree of the TPU material is high, and the harm to the environment is reduced; meanwhile, the TPU material is transparent, so that the internal condition of the filter can be observed conveniently.
(3) When the filter is maintained, the shell does not need to be replaced, only the filter element needs to be replaced, and the maintenance cost is low;
(4) the assembly process of a host factory or a whole vehicle factory is optimized, the assembly procedures are reduced, and the production efficiency is improved;
(5) the fuel is filtered firstly, and then passes through the change-over valve, reduces change-over valve card valve risk.
(6) The main and auxiliary oil tanks separately filter different fuel oil, and the risk of incapability of starting due to low-temperature oil mixing is reduced.
(7) The electric pump is used for assisting in pumping oil, and the success rate of one-time ignition starting is improved.
The double-oil-tank oil-way switching system of the fuel filter has the advantages of compact structure, high integration degree, few joints and low leakage risk; the filter element is replaceable, and the production cost is low; the filtering and switching are realized, the valve clamping risk is reduced, and the switching efficiency is high; the main and auxiliary oil tanks are respectively filtered, so that the risk that the engine cannot be started due to oil mixing at low temperature is reduced.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.

Claims (10)

1. A double-oil-tank oil-way switching system of a fuel filter is characterized by comprising a secondary oil-tank filter (10), a main oil-tank filter (20), a switching valve component (40) and a filter tank component (50) arranged between the secondary oil-tank filter (10) and the main oil-tank filter (20);
the conversion valve assembly (40) comprises a main and auxiliary oil tank oil supply conversion valve (41) and a main and auxiliary oil tank oil return conversion valve (42), wherein a main oil tank filter oil inlet (101), an auxiliary oil tank filter oil inlet (102), an engine oil supply port (103), an engine oil return port (104), a main oil tank filter oil return port (105), an auxiliary oil tank filter oil return port (106), a main oil tank filter oil outlet (107) and an auxiliary oil tank filter oil outlet (108) are formed in the outer wall of the filter tank assembly (50);
the inner end of an oil inlet (101) of the main oil tank filter and the outer end of an oil outlet (107) of the main oil tank filter are both connected to the main oil tank filter (20), and the inner end of an oil inlet (102) of the auxiliary oil tank filter and the outer end of an oil outlet (108) of the auxiliary oil tank filter are both connected to the auxiliary oil tank filter (10); the inner ends of a main oil tank filter oil outlet (107) and an auxiliary oil tank filter oil outlet (108) are connected to an engine oil supply port (103) through a main and auxiliary oil tank oil supply conversion valve (41), and an engine oil return port (104) is connected to the inner ends of a main oil tank filter oil return port (105) and an auxiliary oil tank filter oil return port (106) through a main and auxiliary oil tank oil return conversion valve (42).
2. The double-oil-tank oil-way switching system of the fuel filter as claimed in claim 1, wherein a first channel (201), a second channel (202), a third channel (203), a fourth channel (204), a fifth channel (205), a sixth channel (206), a seventh channel (207) and an eighth channel (208) are arranged inside the filter tank assembly (50), the inner end of the oil inlet (101) of the main oil tank filter is connected with the main oil tank filter (20) through the first channel (201), and the inner end of the oil inlet (102) of the auxiliary oil tank filter is connected with the auxiliary oil tank filter (10) through the second channel (202); the inner ends of the main oil tank filter oil outlet (107) and the auxiliary oil tank filter oil outlet (108) are respectively connected to a main and auxiliary oil tank oil supply conversion valve (41) through a third channel (203) and a fourth channel (204), and the main and auxiliary oil tank oil supply conversion valve (41) is connected to an engine oil supply port (103) through a fifth channel (205); the engine oil return port (104) is connected to a main and auxiliary oil tank oil return conversion valve (42) through a sixth channel (206), and the main and auxiliary oil tank oil return conversion valve (42) is connected to the inner end of a main oil tank filter oil return port (105) through a seventh channel (207) and is connected to the inner end of an auxiliary oil tank filter oil return port (106) through an eighth channel (208).
3. The double-oil-tank oil path switching system of the fuel filter as claimed in claim 2, further comprising an electric pump assembly (30), wherein a cavity (51) connected with the canister assembly (50) is arranged on the electric pump assembly (30), the cavity (51) is divided into an upper part and a lower part by an electric pump assembly sealing ring (31), the lower part of the cavity (51) is connected with the fifth channel (205), and the upper part of the cavity (51) is connected with an engine oil supply port (103).
4. The double-tank oil circuit switching system of a fuel filter according to claim 3, wherein a check valve assembly (70) is arranged in the fifth passage (205), a check valve (71) is arranged in the check valve assembly (70) and is sealed, a ninth passage (209) is arranged inside the filter tank assembly (50), and the main and auxiliary tank oil supply switching valve (41) is connected to the lower part of the cavity (51) through the ninth passage (209).
5. The double-oil-tank oil path switching system of the fuel filter as claimed in claim 4, wherein the main and auxiliary oil tank supply switching valve (41) is provided with two switching valve assembly oil inlets (109) and a switching valve oil outlet (110), the two switching valve assembly oil inlets (109) are respectively connected with the third channel (203) and the fourth channel (204), and the switching valve oil outlet (110) is connected with the fifth channel (205) and the ninth channel (209); and a change-over valve component oil return inlet (111) and two change-over valve oil return outlets (112) are arranged on the main and auxiliary oil tank oil return change-over valve (42), the change-over valve component oil return inlet (111) is connected with a sixth channel (206), and the two change-over valve oil return outlets (112) are respectively connected with a seventh channel (207) and an eighth channel (208).
6. The double-oil-tank oil circuit switching system of the fuel filter as defined in claim 1, wherein the canister assembly (50) is provided with a mounting and fixing bracket (60) assembled with a whole vehicle, the mounting and fixing bracket (60) is integrally formed with the canister assembly (50), and the mounting and fixing bracket (60) is provided with four mounting holes (61).
7. The double-oil-tank oil circuit switching system of the fuel filter of claim 2, wherein the main oil tank filter (20) comprises a main filter lower cover (21), a main filter element upper end cover (23), a main filter element lower end cover (24), a main filter element (25), a central pipe (26) and an air guide pipe (27), the main filter lower cover (21) is made of TPU material, and the main filter lower cover (21) is in threaded connection with the filter tank assembly (50); the main filter element (25) is connected with the main filter element upper end cover (23), the main filter element lower end cover (24), the central tube (26) and the air duct (27) through glue injection.
8. The double-tank oil path switching system of a fuel filter according to claim 7, wherein a water level sensor (80) is provided in the main tank filter (20), the water level sensor (80) is provided at a lower position of a main tank filter lower cover (21), and the water level sensor (80) is of a float type or an electrode type; an electric heater (22) is arranged in the main oil tank filter (20), and the electric heater (22) is arranged at the upper part of a lower cover (21) of the main oil tank filter.
9. The double-tank oil circuit switching system of a fuel filter according to claim 7, wherein the inner surface of the main filter lower cover (21) is provided with a longitudinally arranged inner limit rib (301); the main filter element (25) is of a detachable structure, and an upper end cover (23) of the main filter element is clamped with the first channel (201); and the lower end cover (24) of the main filter element is clamped with the limiting rib (301) of the lower cover (21) of the main filter.
10. The double-oil-tank oil-way switching system of the fuel filter according to claim 7, wherein the secondary oil-tank filter (10) comprises a secondary filter upper cover (11), a secondary filter element (12), a secondary filter element upper end cover (13), a secondary filter element lower end cover (14), a secondary central tube (15) and a secondary air duct (16); and a water drain valve (90) is also arranged on the auxiliary oil tank filter (10).
CN202111295234.XA 2021-11-03 2021-11-03 Fuel filter's two oil tank oil circuit switched systems Pending CN113790114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111295234.XA CN113790114A (en) 2021-11-03 2021-11-03 Fuel filter's two oil tank oil circuit switched systems

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Application Number Priority Date Filing Date Title
CN202111295234.XA CN113790114A (en) 2021-11-03 2021-11-03 Fuel filter's two oil tank oil circuit switched systems

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CN113790114A true CN113790114A (en) 2021-12-14

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CN202111295234.XA Pending CN113790114A (en) 2021-11-03 2021-11-03 Fuel filter's two oil tank oil circuit switched systems

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113006987A (en) * 2021-04-02 2021-06-22 上海弗列加滤清器有限公司 Filter and vehicle
CN113006988A (en) * 2021-04-02 2021-06-22 上海弗列加滤清器有限公司 Filter assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113006987A (en) * 2021-04-02 2021-06-22 上海弗列加滤清器有限公司 Filter and vehicle
CN113006988A (en) * 2021-04-02 2021-06-22 上海弗列加滤清器有限公司 Filter assembly

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