CN112576417A - Electric control valve, electric control valve assembly, electric control fuel system and filling control method - Google Patents
Electric control valve, electric control valve assembly, electric control fuel system and filling control method Download PDFInfo
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- CN112576417A CN112576417A CN202011449579.1A CN202011449579A CN112576417A CN 112576417 A CN112576417 A CN 112576417A CN 202011449579 A CN202011449579 A CN 202011449579A CN 112576417 A CN112576417 A CN 112576417A
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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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
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- 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
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
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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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (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 relates to an electric control valve, an electric control valve assembly, an electric control fuel system and a filling control method, wherein the electric control valve comprises a driving mechanism, an opening and closing valve and an opening regulating valve; the driving mechanism is connected with the opening and closing valve and the opening regulating valve through a valve rod; the opening and closing valve comprises an opening state and a closing state, and the opening adjusting valve is used for adjusting the opening. The electric control valve with the adjustable opening degree, the selective integrated pressure protection valve of the electric control valve and the fuel system using the electric control valve are adjusted to different working states to enable the fuel system to adapt to different vehicle working conditions, and functions of controllable system pressure, fuel filling, refilling and the like are achieved.
Description
Technical Field
The invention belongs to the technical field of fuel systems, and particularly relates to an electric control valve, an electric control valve assembly, an electric control fuel system and a filling control method.
Background
In order to meet increasingly strict laws and regulations, when a plug-in hybrid electric vehicle runs in a pure electric mode, oil and gas are required to be sealed in a fuel system and controlled by a Fuel Tank Isolation Valve (FTIV), an electric driving part of the FTIV has two states of opening and closing, and most of the FTIV is in the closed state to seal the oil and gas in a fuel tank. Ambient temperature's mutual change leads to the inside pressure of fuel storage tank also mutual change, and pressure surpasss certain scope and can lead to the fuel tank to warp too big, and consequently FTIV has pressure protection function, surpasss certain positive pressure promptly, or is less than certain negative pressure and can open, prevents that the oil tank warp or inefficacy because of pressure is too big or low excessively.
The volume control mode of the fuel tank at the present stage is realized through a mechanical liquid level control valve, if the liquid level control valve does not meet the design requirement in the development process, the change period is longer, except the liquid level control valve, in order to ensure that all angles of the tank body can breathe in the use process, exhaust valves are possibly arranged at certain positions. After more valves are arranged in the fuel system, if the valves are welded outside, the requirement on the space arrangement of the fuel tank is higher, the emission is larger, and if the valves are arranged inside, the volume of the fuel tank is reduced.
Disclosure of Invention
The invention aims to provide an electric control valve, an electric control valve assembly, an electric control fuel system and a filling control method, which are used for solving the problems of low integration level and difficult regulation and control of different parts of the existing fuel system, and can reduce the cost of the electric control fuel system and reduce the development period.
The invention is realized by the following technical scheme:
an electric control valve comprises a driving mechanism, an opening and closing valve and an opening adjusting valve; the driving mechanism is connected with the opening and closing valve and the opening regulating valve through a valve rod; the opening and closing valve comprises an opening state and a closing state, and the opening adjusting valve is used for adjusting the opening.
Preferably, the first valve seat portion corresponding to the opening degree adjustment valve is provided with an air flow guide device for guiding the air flow entering the first valve seat.
An electric control valve comprises a driving mechanism, a valve rod and an opening regulating valve, wherein the opening regulating valve comprises a first valve core and a sealing element, and the driving mechanism is connected with the first valve core through the valve rod; the sealing element is mounted on the first valve core or on a first valve seat of the electric control valve.
An electric control valve assembly comprises the electric control valve and a pressure protection valve, wherein an air outlet of the pressure protection valve is communicated with a first valve seat channel in a first valve seat of the electric control valve.
Preferably, the pressure protection valve comprises a second valve seat, a second valve core, a third valve core, a second spring and a third spring;
a second valve seat channel and a third valve seat channel with different inner diameters are arranged in the second valve seat, the second valve core is arranged in the second valve seat channel, and the second spring is arranged between the second valve seat and the second valve core;
the third valve core is arranged in the third valve seat channel, and the third spring is arranged between the second valve seat and the third valve core.
An electric control fuel system comprises any one of the electric control valve assemblies, a fuel tank, an exhaust joint, an oil-gas separator, a first oil-gas separation device, a second oil-gas separation device, a carbon tank, a pressure sensor, a liquid level sensor and a controller;
the exhaust joint and the oil-gas separator are both arranged above the fuel tank, and the exhaust joint is connected with the oil-gas separator; the liquid level sensor is arranged in the fuel tank, and the pressure sensor is arranged in/on the fuel tank or on a pipeline or a flange connected with the fuel tank;
the outlet of the oil-gas separator is sequentially connected with a first oil-gas separation device and a second oil-gas separation device through pipelines, and the second oil-gas separation device is communicated with the oil filling pipe through an oil guide pipe;
the gas outlet of the second oil-gas separation device is respectively connected with the gas inlet of an electric control valve in the electric control valve assembly and the gas inlet of a pressure protection valve, the gas outlet of the electric control valve is connected with the gas inlet of a carbon tank through a pipeline, and the gas outlet of the carbon tank is connected with an atmosphere pipeline;
the liquid level sensor, the pressure sensor and the driving mechanism of the electric control valve are in electric signal connection with the controller.
Preferably, the number of the exhaust joints is one or two; if the number of the exhaust connectors is one, the exhaust connectors are arranged at the central position of the upper part of the fuel tank; if two exhaust joints are provided, the oil-gas separator comprises a left air inlet joint and a right air inlet joint, the left air inlet joint is connected with the right side of the oil-gas separator through a pipeline, and the right air inlet joint is connected with the left side of the oil-gas separator through a pipeline.
A filling control method of an electronic control fuel system utilizes the electronic control fuel system of any one of the above items, and comprises the following steps:
s1, the controller acquires a fuel filling signal and a pressure signal in the fuel tank detected by the pressure sensor;
s2, the controller controls the electric control valve to open, and after the pressure in the fuel tank reaches a set range, the liquid level sensor detects the liquid level in the fuel tank and judges;
and S3, if the liquid level in the fuel tank reaches a set value, the controller controls the electric control valve to close.
The invention has the beneficial effects that:
the utility model provides an automatically controlled valve with adjustable aperture, the integrated pressure protection valve of automatically controlled valve selectivity to and the fuel system who uses automatically controlled valve, adjust automatically controlled valve to different operating condition and let fuel system adapt to different vehicle operating modes, realize functions such as controllable system pressure, fuel filling and replenishing.
Drawings
FIG. 1 is a schematic illustration of a prior art fuel storage system;
fig. 2 is a schematic view of the electrically controlled valve of embodiment 1 in a closed state;
fig. 3 is a schematic view of the electrically controlled valve of embodiment 1 in a partially opened state;
fig. 4 is a schematic view of the electrically controlled valve of embodiment 1 in a fully open state;
fig. 5A to 5C are schematic views of the electric control valve of embodiment 2 in a closed state, a partially opened state, and a fully opened state in this order;
fig. 6A to 6C are schematic views of the electric control valve of embodiment 3 in a closed state, a partially opened state, and a fully opened state in this order;
fig. 7A to 7C are schematic views of the electric control valve of embodiment 4 in a closed state, a partially opened state, and a fully opened state in this order;
FIG. 8 is a schematic diagram of an electrical control valve assembly;
FIG. 9 is a schematic diagram of the working state of the pressure protection valve in a positive pressure state;
FIG. 10 is a schematic view of the working state of the pressure protection valve in a negative pressure state;
FIG. 11 is a schematic diagram of an electronically controlled fuel system with dual exhaust connections;
FIG. 12 is a schematic diagram of an electronically controlled fuel system with a single exhaust connection;
FIG. 13 is a logic diagram of a fueling control method for an electronically controlled fuel system.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
Referring to fig. 1, which is a schematic view of a prior art fuel storage system, the fill volume of the tank is determined by a level control valve 104, and in addition to the level control valve 104, a plurality of vent valves 103 are provided to ensure venting of the tank at various angles. The tank isolation valve 102 is generally a solenoid switch valve, and is normally closed, when the pressure in the fuel tank is high, the air and oil-gas mixture in the fuel tank 101 passes through a plurality of vent valves 103 and then a liquid level control valve 104, and the mixture passes through the liquid level control valve 104 and then reaches the tank isolation valve 102. And finally, the gas mixture passes through the carbon tank, oil gas in the gas mixture is adsorbed by the carbon tank, and air is exhausted to the atmosphere.
The invention provides an electric control valve which is preferably applied to an electric control fuel system and aims to solve the problems that the current fuel system is low in control precision and integration level and cannot meet different requirements.
Fig. 2 to 4 are schematic diagrams of the electric control valve of embodiment 1 in a closed state, a partially opened state, and a fully opened state. Wherein, the opening of the middle part is not a fixed state, but can be adjusted according to different working conditions. The electric control valve of the embodiment comprises a driving mechanism 504, an opening and closing valve and an opening adjusting valve; the driving mechanism is connected with the opening and closing valve and the opening regulating valve through a valve rod; the opening and closing valve comprises an opening state and a closing state, and the opening adjusting valve is used for adjusting the opening.
Specifically, the electric control valve includes a driving mechanism 504, a first valve seat 533, a first sealing valve core 534, a second sealing valve core 532 and a valve rod 531, a first valve seat channel is provided in the first valve seat for the circulation of gas, a gas inlet and a gas outlet 601 are provided on the first valve seat, the gas inlet and the gas outlet are communicated through the first valve seat channel, wherein the first sealing valve core is used for opening and closing the gas inlet, a gas flow guiding device is provided at a portion of the first valve seat channel corresponding to the second sealing valve core, the first valve seat channel and the second sealing valve core are formed by connecting two small-diameter ends into an integral structure, the second sealing valve core is provided in a cone-frustum-shaped channel far away from the direction of the gas inlet, and the second sealing valve core is also in a cone-frustum shape.
The driving mechanism is connected with the valve rod, and the first sealing valve core and the second sealing valve core are both arranged on the valve rod. Under normal operating conditions, the electrically controlled valve is in the closed state of fig. 2; if the pressure of the fuel tank exceeds a set value, the electric control valve is partially opened, the switch valve of the upper part is in an open state, the regulating valve of the lower part is in a partially open state, the channel of the whole electric control valve still belongs to a partially open state, if the vehicle is detected to be in a filling state, the electric control valve is in a fully open state as shown in figure 4, and the fuel tank is assisted to finish a filling event.
Fig. 5A to 5C are schematic diagrams of the electric control valve of embodiment 2 in a closed state, a partially opened state, and a fully opened state in sequence, in this embodiment, compared with the technical solution of embodiment 1, the structure of the present application is simpler, and the specific electric control valve includes a driving mechanism 505, a valve rod 541, and an opening/closing valve, where the opening/closing valve includes a first valve core 543 and a supporting element 542, in this embodiment, the first valve core is a sealing element, the supporting element is a truncated cone-shaped structure, and may also be a cylindrical structure or other structures, the driving mechanism is connected with the supporting element through the valve rod, and the first valve core is installed at an end of the supporting element far from the valve rod, and is used for sealing an air inlet of the first valve seat. The electric control valve can realize the adjustment of different opening degrees under the action of the driving mechanism 505 and the valve rod 541 by using one first valve core 543, and the structure is more compact and concise.
Fig. 6A to 6C are schematic views of the electric control valve of embodiment 3 in a closed state, a partially opened state, and a fully opened state in this order; the technical solution of this embodiment is substantially the same as the technical solution of embodiment 2, except that the sealing element 546 is fixed to the first valve seat, the first valve core is in a truncated cone-shaped structure, the end of the valve rod is provided with a supporting structure, the first valve core is fixedly connected with the supporting structure, the first valve core 545 realizes the adjustment of different opening degrees under the action of the driving mechanism 506 and the valve rod 544, and the scheme has a compact structure.
Fig. 7A to 7C are schematic views of the electric control valve of embodiment 4 in a closed state, a partially opened state, and a fully opened state in this order; the technical solution of this embodiment is basically the same as that of embodiment 3, and the difference is that the sealing element 549 is fixed on the supporting structure 548, and the adjustment of different opening degrees can be realized under the action of the driving mechanism 507 and the valve rod 547 by using one first valve core, and the scheme has a compact and concise structure and is convenient to manufacture.
The application also provides an electric control valve assembly, as shown in fig. 8, which is a structural schematic diagram of the electric control valve assembly under a closing condition, and comprises two parts, namely an electric control valve and a pressure protection valve 567, wherein the electric control valve can be composed of any one of the electric control valve and the pressure protection valve in embodiments 1 to 4. A bypass channel adjacent to the first valve seat channel is arranged in the first valve seat 533 of the electric control valve, one end of the bypass channel is communicated with the exhaust port 601 of the electric control valve, the other end of the bypass channel is provided with a second inlet on the first valve seat, and the outlet 573 of the pressure protection valve is communicated with the second inlet on the first valve seat of the electric control valve.
The pressure protection valve comprises a second valve seat 570, a second valve core 571, a third valve core 568, a second spring 572 and a third spring 569;
and a second valve seat channel and a third valve seat channel with different inner diameters are arranged in the second valve seat, the second valve core is arranged in the second valve seat channel, and the second spring is arranged between the second valve seat and the second valve core.
The third valve core is arranged in the third valve seat channel, and the third spring is arranged between the second valve seat and the third valve core.
As shown in fig. 9, which is a schematic diagram of the working state of the pressure protection valve in the positive pressure state, the electronic control valve is in the power-off sealing state, the direction indicated by the arrow is the gas flow direction, under the condition that the pressure of the fuel tank is increased, the mixed gas flows to the pressure protection valve through the interface 402, under the pressure action, the third valve element 568 of the pressure protection valve is pushed to open the channel, and the gas flows to the exhaust port 573 of the pressure protection valve through the valve, and then flows to the carbon canister through the electronic control valve and further through the atmospheric pipeline.
As shown in fig. 10, which is a schematic diagram of the working state of the pressure protection valve in a negative pressure state, the electronic control valve is in a power-off sealing state, the direction indicated by the arrow is a gas flow direction, the pressure in the fuel tank is lower than the external environment pressure by a certain value, air flows from the external environment to the connector 601 through the carbon canister, flows to the pressure protection valve through the pressure protection valve window 573, and under the action of the external pressure, the second valve spool 571 of the pressure protection valve is pushed to open the channel, and then flows to the fuel tank through 402.
Fig. 11 is an electrically controlled fuel system according to the present invention, in which two air discharge connectors 11 and 12 are arranged diagonally in a fuel tank 200, the liquid fuel can be separated in the air-fuel separator 2, and the air discharge connector 11 on the left side is connected to the right side of the air-fuel separator 2, so that the air discharge connector on the left side is prevented from being submerged when the fuel tank is tilted too much, the liquid fuel enters the air discharge connector 11 on the left side and then enters the pipeline connecting 11 to 2, and the connectors 11 and 2 are arranged on the right side, so that the liquid fuel can be better prevented from entering the air-fuel separator 2. Similarly, the right exhaust joint 12 is connected to the left side of the oil separator 2. After the liquid fuel passes through the oil-gas separator, in order to prevent the liquid fuel from entering the following parts and ensure that the liquid fuel flows back to the oil tank more than a solution, the first oil-gas separation device 3 is arranged at the rear end of the oil-gas separator, and if the liquid fuel enters the second oil-gas separation device 4, the second oil-gas separation device guides the liquid fuel to the oil filling pipe 201. Under the condition that the pressure in the fuel tank is overlarge, the gas in the fuel tank flows in the direction indicated by an arrow, firstly flows to the oil-gas separator 2 through the two exhaust connectors 11 and 12, then flows to the first oil-gas separation device 3, the second oil-gas separation device 4, then flows to the electric control valve 5, and finally flows to the carbon tank 6, wherein the oil-gas is adsorbed by the carbon tank, and the air is discharged to the atmosphere. When the pressure in the fuel tank is obviously lower than the atmospheric pressure, the air supplements the fuel tank, and the air flow flows in the reverse direction.
As shown in fig. 12, the layout of another electronically controlled fuel system according to the present invention is different from the previous system in that the system has only one vent connector 1, and the height of the vent connector can be set high enough to set the central position of the fuel tank as much as possible to ensure that the fuel tank can be vented at all critical angles, if the environment around the electronically controlled fuel system allows.
As shown in fig. 13, a logical diagram of a filling control method for an electronic control fuel system is provided, and the filling control method for the electronic control fuel system, which utilizes any one of the electronic control fuel systems, includes the following steps:
s1, the controller acquires a fuel filling signal and a pressure signal in the fuel tank detected by the pressure sensor;
s2, the controller controls the electric control valve to open, and after the pressure in the fuel tank reaches a set range, the liquid level sensor detects the liquid level in the fuel tank and judges;
and S3, if the liquid level in the fuel tank reaches a set value, the controller controls the electric control valve to close.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of by the inventive arts should be included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the scope defined by the claims.
Claims (8)
1. An electric control valve is characterized by comprising a driving mechanism, an opening and closing valve and an opening adjusting valve; the driving mechanism is connected with the opening and closing valve and the opening regulating valve through a valve rod; the opening and closing valve comprises an opening state and a closing state, and the opening adjusting valve is used for adjusting the opening.
2. The electrically controlled valve according to claim 1, wherein the first valve seat portion corresponding to the opening degree adjustment valve is provided with an air flow guide for guiding the air flow into the first valve seat.
3. An electric control valve is characterized by comprising a driving mechanism, a valve rod and an opening regulating valve, wherein the opening regulating valve comprises a first valve core and a sealing element; the sealing element is mounted on the first valve core or on a first valve seat of the electric control valve.
4. An electrically controlled valve assembly comprising an electrically controlled valve according to any one of claims 1 to 3 and a pressure protection valve, the outlet of the pressure protection valve being in communication with the first seat passage in the first seat of the electrically controlled valve.
5. The electrically controlled valve assembly of claim 4, wherein the pressure protection valve includes a second valve seat, a second valve element, a third valve element, a second spring, and a third spring;
a second valve seat channel and a third valve seat channel with different inner diameters are arranged in the second valve seat, the second valve core is arranged in the second valve seat channel, and the second spring is arranged between the second valve seat and the second valve core;
the third valve core is arranged in the third valve seat channel, and the third spring is arranged between the second valve seat and the third valve core.
6. An electrically controlled fuel system comprising the electrically controlled valve of any one of claims 1 to 3 or the electrically controlled valve assembly of any one of claims 4 to 5, further comprising a fuel tank, a vent fitting, an oil-gas separator, a first oil-gas separator, a second oil-gas separator, a canister, a pressure sensor, a level sensor, and a controller;
the exhaust joint and the oil-gas separator are both arranged above the fuel tank, and the exhaust joint is connected with the oil-gas separator; the liquid level sensor is arranged in the fuel tank, and the pressure sensor is arranged in/on the fuel tank or on a pipeline or a flange connected with the fuel tank;
the outlet of the oil-gas separator is sequentially connected with a first oil-gas separation device and a second oil-gas separation device through pipelines, and the second oil-gas separation device is communicated with the oil filling pipe through an oil guide pipe;
the gas outlet of the second oil-gas separation device is respectively connected with the gas inlet of an electric control valve in the electric control valve assembly and the gas inlet of a pressure protection valve, the gas outlet of the electric control valve is connected with the gas inlet of a carbon tank through a pipeline, and the gas outlet of the carbon tank is connected with an atmosphere pipeline;
the liquid level sensor, the pressure sensor and the driving mechanism of the electric control valve are in electric signal connection with the controller.
7. The electrically controlled fuel system according to claim 6, wherein said exhaust connection is one or two; if the number of the exhaust connectors is one, the exhaust connectors are arranged at the central position of the upper part of the fuel tank; if two exhaust joints are provided, the oil-gas separator comprises a left air inlet joint and a right air inlet joint, the left air inlet joint is connected with the right side of the oil-gas separator through a pipeline, and the right air inlet joint is connected with the left side of the oil-gas separator through a pipeline.
8. An electronic control fuel system filling control method, which utilizes the electronic control fuel system of claim 6 or 7, is characterized by comprising the following steps:
s1, the controller acquires a fuel filling signal and a pressure signal in the fuel tank detected by the pressure sensor;
s2, the controller controls the electric control valve to open, and after the pressure in the fuel tank reaches a set range, the liquid level sensor detects the liquid level in the fuel tank and judges;
and S3, if the liquid level in the fuel tank reaches a set value, the controller controls the electric control valve to close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449579.1A CN112576417A (en) | 2020-12-09 | 2020-12-09 | Electric control valve, electric control valve assembly, electric control fuel system and filling control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449579.1A CN112576417A (en) | 2020-12-09 | 2020-12-09 | Electric control valve, electric control valve assembly, electric control fuel system and filling control method |
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| Publication Number | Publication Date |
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| CN112576417A true CN112576417A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011449579.1A Withdrawn CN112576417A (en) | 2020-12-09 | 2020-12-09 | Electric control valve, electric control valve assembly, electric control fuel system and filling control method |
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| CN (1) | CN112576417A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847175A (en) * | 2021-09-16 | 2021-12-28 | 江西昌河汽车有限责任公司 | Pressure adjusting structure and method for high-pressure fuel system |
| CN113931769A (en) * | 2021-10-13 | 2022-01-14 | 亚普汽车部件股份有限公司 | Integrated electric control assembly of fuel system and fuel system control method |
| CN114233532A (en) * | 2021-12-30 | 2022-03-25 | 亚普汽车部件股份有限公司 | Flexible electric control valve, electric control fuel system and control method of electric control valve |
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| CN113847175A (en) * | 2021-09-16 | 2021-12-28 | 江西昌河汽车有限责任公司 | Pressure adjusting structure and method for high-pressure fuel system |
| CN113931769A (en) * | 2021-10-13 | 2022-01-14 | 亚普汽车部件股份有限公司 | Integrated electric control assembly of fuel system and fuel system control method |
| CN114233532A (en) * | 2021-12-30 | 2022-03-25 | 亚普汽车部件股份有限公司 | Flexible electric control valve, electric control fuel system and control method of electric control valve |
| CN114233532B (en) * | 2021-12-30 | 2023-11-03 | 亚普汽车部件股份有限公司 | Flexible electric control valve, electric control fuel system and control method of electric control valve |
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