CN112594096A - Electric control valve, electric control fuel system and control method - Google Patents
Electric control valve, electric control fuel system and control method Download PDFInfo
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- CN112594096A CN112594096A CN202011451925.XA CN202011451925A CN112594096A CN 112594096 A CN112594096 A CN 112594096A CN 202011451925 A CN202011451925 A CN 202011451925A CN 112594096 A CN112594096 A CN 112594096A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
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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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- 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
- F02M2025/0845—Electromagnetic valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
The invention relates to an electric control valve, an electric control fuel system and a control method, wherein the electric control valve comprises a shell, a sealing element and a motor; a first chamber, a second chamber and a third chamber are arranged in the shell; the first chamber is provided with a first opening, the first chamber is communicated with the second chamber through a first vent, the second chamber is communicated with the third chamber through a second vent, and the third chamber is provided with a second opening; the sealing element is arranged in the second chamber and used for closing or opening the first vent and the second vent; the motor is connected with the sealing element through the driving part and is used for driving the sealing element to act. The electric control fuel system also comprises an oil tank, a controller, a pressure detection device, a liquid level detection device and a carbon tank. The technical scheme solves 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.
Description
Technical Field
The invention belongs to the technical field of fuel steam management systems, and particularly relates to an electric control valve, an electric control fuel system and a control method.
Background
Currently, to meet increasingly stringent emissions legislation, more and more vehicles now incorporate fuel vapour management systems, typically under certain conditions to seal fuel vapour within the fuel tank.
At present, most of fuel vapor management modes used by high-pressure fuel systems use an isolation valve (FTIV), but the isolation valve only can perform mechanical two-stage pressure relief opening and positive and negative pressure balance, has the defect of long pressure relief time, and needs to be matched with an oil injection limiting valve (FLVV) on an oil tank to control the oil tank injection amount. Because the common valve is closed by a mechanical mode, the development and verification period is long, the development cost of the die is high, each type of oil tank needs to be matched with a specific valve for use, and the universality is poor. Therefore, an electric control valve and a fuel system with new control functions are needed, so that the complexity of equipment can be reduced, and the stability of the system performance can be ensured.
Disclosure of Invention
The invention aims to provide an electric control valve, an electric control fuel system and a control method, which are used for solving the problems of low integration level and difficult regulation and control of different parts of the conventional 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 electrically controlled valve comprises a housing, a sealing member and a motor;
a first chamber, a second chamber and a third chamber are arranged in the shell; the first chamber is provided with a first opening, the first chamber is communicated with the second chamber through a first vent, the second chamber is communicated with the third chamber through a second vent and a third vent, the third vent is always communicated, and the third chamber is provided with a second opening;
the sealing element is arranged in the second chamber and used for closing or opening the first vent and the second vent;
the motor is connected with the sealing element through a driving part and used for driving the sealing element to act.
Preferably, a fourth air port is arranged between the first chamber and the second chamber, a pressure protection valve is arranged in the second chamber, a third opening of the pressure protection valve is connected with the fourth air port, and a fourth opening and a fifth opening of the pressure protection valve are communicated with the second chamber.
An electric control fuel system comprises the electric control valve, an oil tank, a controller, a pressure detection device, a liquid level detection device and a carbon tank;
an exhaust port of the oil tank is communicated with a first opening of an electric control valve, a second opening of the electric control valve is connected with a first carbon tank opening of a carbon tank, and a second carbon tank opening of the carbon tank is communicated with the atmosphere;
the pressure detection device and the liquid level detection device are both arranged on the oil tank;
the controller is respectively connected with the pressure detection device, the liquid level detection device and the electric signals of the motors of the electric control valves.
Preferably, the pressure detection device is a pressure sensor, and the liquid level detection device is a liquid level sensor.
A control method of an electric control fuel system is utilized, and comprises the following steps:
the controller judges the state of the vehicle;
if the vehicle is in a running or parking process, the pressure detection device detects a pressure signal in the oil tank, if the pressure in the oil tank is within a set range, the controller controls a motor of the electric control valve to drive a sealing piece to close a first air vent of the electric control valve, and the electric control valve keeps closed;
if the pressure in the oil tank exceeds a set range, the controller controls the motor to drive the sealing element to open the first vent hole, and the electric control valve opens to release the pressure;
if the vehicle is in the fuel oil filling process, after the controller receives a filling signal, the controller controls the motor to drive the sealing element to open the first vent hole, so that pressure relief before fuel oil filling or pressure relief in the filling process is realized;
when the pressure in the oil tank is in a set range, the liquid level detection device detects the liquid level in the oil tank, and when the liquid level reaches a set value, the controller controls the motor to drive the sealing piece to close the second vent of the electric control valve, so that gun jumping of the oil gun is realized;
if the vehicle is in the fuel oil replenishing process, the second vent hole of the electric control valve is kept in a closed state, and the electric control valve adjusts the internal pressure of the oil tank through the third vent hole to realize the fuel oil replenishing.
The invention has the beneficial effects that:
the technical scheme solves 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.
Drawings
FIG. 1 is a schematic view of an electronically controlled fuel storage system of the present invention;
FIG. 2 is a schematic view of the electrically controlled valve in a first closed position;
FIG. 3 is a schematic view of the operation state when the electrically controlled valve is opened;
FIG. 4 is a schematic view of the electrically controlled valve in a second closed position;
FIG. 5 is a schematic view of the electrically controlled valve operating at overpressure;
fig. 6 is a schematic diagram of the working state when the electric control valve is under-pressure.
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.
As shown in fig. 2 to 4, the present application provides an electrically controlled valve, which includes a housing 61, a sealing member 62 and an electric motor 63, and in other embodiments of the present application, the electric motor may be replaced by other devices or apparatuses capable of performing the same function without affecting the implementation of the technical solution of the present application.
A first chamber 611, a second chamber 612 and a third chamber 613 are arranged in the shell 61; the first chamber 611 is provided with a first opening for communicating the exhaust gas in the tank with the gas entering the tank from the outside.
The first chamber 611 communicates with the second chamber 612 through the first vent hole 614, the second chamber 612 communicates with the third chamber 613 through the second vent hole 615, and the third chamber 613 is provided with a second opening for communicating with the first canister opening of the canister 3.
A seal 62 is disposed in the second chamber 612 for closing or opening the first vent 614 and the second vent 615; the motor 63 is connected to the seal 62 through a driving unit 631, and drives the seal 62 to operate.
A third air port 616 is arranged between the second chamber 612 and the third chamber 613, the third air port 616 is always communicated, and the third air port 616 is used for realizing pressure control of adding after gun jump in the fuel oil filling process.
The electric control valve 6 of the present application is further provided with a pressure protection valve 64 for mechanically controlling the pressure in the oil tank, in particular when the electric aspect of the electric control valve or the whole electric control system loses function, when the pressure in the oil tank is too high, the pressure can be released through the pressure protection valve, and when the pressure in the oil tank is too low, the air can be supplied to the fuel storage system through the pressure protection valve. A fourth air port is provided between the first chamber 611 and the second chamber 612, a pressure protection valve 64 is provided in the second chamber 612, a third opening 644 of the pressure protection valve is connected to the fourth air port 617, and a fourth opening 645 and a fifth opening 643 of the pressure protection valve are both communicated with the second chamber 612.
As shown in fig. 5, the working state of the electronic control valve is shown when the electronic control valve is under overpressure, at this time, the sealing element 62 is in a power-off closing state, at this time, the first vent 614 is closed by the sealing element 62, when the pressure in the oil tank increases, the gas flows to the pressure protection valve 64, the valve element 642 of the pressure protection valve is pushed under the action of the pressure, the fourth vent 617 is opened, the gas enters the second chamber 612 through the third opening 644 and the fourth opening 645 of the pressure protection valve in sequence, and then enters the third chamber 613 through the second vent 615 or/and the third vent 616, and then flows to the carbon canister 3.
Fig. 6 is a schematic diagram of an operating state when the electronic control valve is under-pressure, at this time, the electronic control valve is in a power-off closing state, at this time, the sealing member 62 closes the first vent 614, under the condition that the pressure in the oil tank is reduced, the outside air enters the third chamber 613 through the second opening of the electronic control valve, and then enters the second chamber 612 through the second vent 615 and/or the third vent 616, under the action of the pressure, the valve element 641 of the pressure protection valve is pushed, and the air enters the first chamber 611 through the fifth opening 643 and the third opening 644 in sequence and then flows to the oil tank 1.
As shown in fig. 1, the present application provides an electronic control fuel system, which includes any one of the above-mentioned electronic control valves 6, and further includes a fuel tank 1, a controller 7, a pressure detection device 4, a liquid level detection device 5, and a canister 3.
The gas vent of oil tank and the first opening intercommunication of automatically controlled valve, the second opening of automatically controlled valve is connected with the first carbon tank opening of carbon tank, the second carbon tank opening and the atmosphere 4 intercommunication of carbon tank.
The pressure detection device and the liquid level detection device are both arranged on the oil tank; in this embodiment, the pressure detection device is a pressure sensor, and the liquid level detection device is a liquid level sensor.
The controller is respectively connected with the pressure detection device, the liquid level detection device and the electric signals of the motors of the electric control valves.
The controller judges the vehicle state according to the received detection signal and controls the motor to move along the linear direction, so that different opening and closing states are formed, and different functions of the electric control fuel system are realized.
The application provides a control method of an electric control fuel system, which comprises the following steps:
the controller determines a state of the vehicle.
If the controller judges that the vehicle is in a driving/parking state, the controller receives a pressure signal of the pressure sensor 4, if the pressure in the oil tank is within a set range, the controller controls a motor of the electric control valve to drive a sealing piece to close a first air port of the electric control valve, namely the electric control valve keeps closed, as shown in fig. 2, the motor is in a closed position, and the sealing piece breaks the first air port.
If the pressure in the oil tank exceeds the set range, the controller controls the motor to move, drives the sealing element to open the first air vent, and the electric control valve opens the pressure relief valve, as shown in fig. 3.
If the vehicle is in the fuel oil filling process, after the controller receives the filling signal, the controller controls the motor to act to drive the sealing element to open the first vent hole, so that pressure relief before fuel oil filling or pressure relief in the filling process is realized.
As shown in fig. 4, when the pressure in the oil tank is within the set range, the liquid level detection device detects the liquid level in the oil tank, and when the liquid level reaches the set value, the controller controls the motor to act, drives the sealing element to close the second vent of the electric control valve, so that the pressure in the oil tank rises sharply, and the gun jump of the oil gun is realized.
If the vehicle is in the fuel oil replenishing process, the second vent hole of the electric control valve is kept in a closed state, and the electric control valve adjusts the internal pressure of the oil tank through the third vent hole to realize the fuel oil replenishing.
After the fuel oil is filled, the controller drives the motor to move to drive the sealing element to move, and the electric control valve returns to the closed state of fig. 2 from the closed state of fig. 4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An electric control valve is characterized by comprising a shell, a sealing element and a motor;
a first chamber, a second chamber and a third chamber are arranged in the shell; the first chamber is provided with a first opening, the first chamber is communicated with the second chamber through a first vent, the second chamber is communicated with the third chamber through a second vent and a third vent, the third vent is always communicated, and the third chamber is provided with a second opening;
the sealing element is arranged in the second chamber and used for closing or opening the first vent and the second vent;
the motor is connected with the sealing element through a driving part and used for driving the sealing element to act.
2. The electrical valve of claim 1, wherein a fourth vent is disposed between the first chamber and the second chamber, a pressure protection valve is disposed in the second chamber, a third opening of the pressure protection valve is connected to the fourth vent, and a fourth opening and a fifth opening of the pressure protection valve are both in communication with the second chamber.
3. An electrically controlled fuel system comprising the electrically controlled valve of claim 1 or 2, further comprising a fuel tank, a controller, a pressure detection device, a liquid level detection device and a canister;
an exhaust port of the oil tank is communicated with a first opening of an electric control valve, a second opening of the electric control valve is connected with a first carbon tank opening of a carbon tank, and a second carbon tank opening of the carbon tank is communicated with the atmosphere;
the pressure detection device and the liquid level detection device are both arranged on the oil tank;
the controller is respectively connected with the pressure detection device, the liquid level detection device and the electric signals of the motors of the electric control valves.
4. The electronically controlled fuel system of claim 3, wherein the pressure sensing device is a pressure sensor and the level sensing device is a level sensor.
5. A control method of an electronically controlled fuel system using the electronically controlled fuel system of claim 3 or 4, comprising the steps of:
the controller judges the state of the vehicle;
if the vehicle is in a running or parking process, the pressure detection device detects a pressure signal in the oil tank, if the pressure in the oil tank is within a set range, the controller controls a motor of the electric control valve to drive a sealing piece to close a first air vent of the electric control valve, and the electric control valve keeps closed;
if the pressure in the oil tank exceeds a set range, the controller controls the motor to drive the sealing element to open the first vent hole, and the electric control valve opens to release the pressure;
if the vehicle is in the fuel oil filling process, after the controller receives a filling signal, the controller controls the motor to drive the sealing element to open the first vent hole, so that pressure relief before fuel oil filling or pressure relief in the filling process is realized;
when the pressure in the oil tank is in a set range, the liquid level detection device detects the liquid level in the oil tank, and when the liquid level reaches a set value, the controller controls the motor to drive the sealing piece to close the second vent of the electric control valve, so that gun jumping of the oil gun is realized;
if the vehicle is in the fuel oil replenishing process, the second vent hole of the electric control valve is kept in a closed state, and the electric control valve adjusts the internal pressure of the oil tank through the third vent hole to realize the fuel oil replenishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011451925.XA CN112594096A (en) | 2020-12-09 | 2020-12-09 | Electric control valve, electric control fuel system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011451925.XA CN112594096A (en) | 2020-12-09 | 2020-12-09 | Electric control valve, electric control fuel system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112594096A true CN112594096A (en) | 2021-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011451925.XA Withdrawn CN112594096A (en) | 2020-12-09 | 2020-12-09 | Electric control valve, electric control fuel system and control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN112594096A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818974A (en) * | 2021-10-13 | 2021-12-21 | 亚普汽车部件股份有限公司 | Electric control component of fuel system and fuel system control method |
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