CN209691856U - A kind of on-vehicle fuel water management system - Google Patents
A kind of on-vehicle fuel water management system Download PDFInfo
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- CN209691856U CN209691856U CN201920644658.4U CN201920644658U CN209691856U CN 209691856 U CN209691856 U CN 209691856U CN 201920644658 U CN201920644658 U CN 201920644658U CN 209691856 U CN209691856 U CN 209691856U
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- moisture trap
- valve
- pile
- drain valve
- hydrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model belongs to fuel cell field, discloses a kind of on-vehicle fuel water management system, including hydrogen supply component, the first moisture trap, pile, the first drain valve, the second moisture trap, the second drain valve, exhaust valve and circulating pump；The entrance of first moisture trap is connect with the outlet of hydrogen supply component, and the gas outlet of the first moisture trap and the hydrogen inlet of pile connect, and the water outlet of the first moisture trap is connect with the first drain valve；The entrance of second moisture trap and the hydrogen outlet of pile connect, first gas outlet of the second moisture trap is connect with exhaust valve and the first drain valve respectively, second gas outlet of the second moisture trap is connect by circulating pump with the entrance of the first moisture trap, and the water outlet of the second moisture trap is connect with the second drain valve.The utility model under various operating conditions, configures different drainage exhaust circuits, prevents pile anode humidification insufficient or humidifies excessively, improves the performance of fuel cell.
Description
Technical field
The utility model belongs to field of fuel cell technology, in particular to a kind of on-vehicle fuel water management system.
Background technique
Proton Exchange Membrane Fuel Cells (Proton Exchange Membrane Fuel Cell, PEMFC) be it is a kind of with
Hydrogen is fuel, using oxygen as the electrochemical generating unit of oxidant.In fuel cell unique reaction product water cathode by
Hydrogen and oxygen are combined under the effect of the catalyst.
In a fuel cell, the presence of liquid water will lead to gas and be unevenly distributed in electrode and in system between each unit
Even, this will lead to the performance decline of fuel cell, and cause each single battery voltage in system inconsistent.Liquid dilutional hyponatremia or mistake
It is few, Proton Exchange Membrane Fuel Cells can all be brought a negative impact.
Currently, in the prior art, the mode of single moisture trap Yu circulator circulation loop in series is mostly used,
The remaining hydrogen of fuel cell anode outlet entraining liquid water is isolated into liquid water through moisture trap, then by circulator
It is sent into pile anode inlet.This mode can make the hydrogen for being recycled back to pile by circulator be nearly at saturation state and still
Carry a small amount of liquid water droplets secretly, when mixing when the low temperature dry hydrogen gas exported with pressure-regulating valve, high temperature and humidity flows back hydrogen will precipitation
Liquid water, liquid water enter pile anode and cause water logging, influence the performance of fuel cell.
Summary of the invention
The purpose of the utility model is to provide a kind of on-vehicle fuel water management systems, under different operating conditions,
It selects different drainage exhaust circuits to realize to pass through circulating hydrogen due to condensing the liquid water formed in low pressure hydrogen pipeline
Moisture trap separation is assisted, and liquid water is discharged or hydrogen is humidified, to prevent pile anode humidification insufficient or add
Wet excess improves the performance of pile.
The technical scheme that the utility model is provided is as follows:
A kind of on-vehicle fuel water management system, including hydrogen supply component, the first moisture trap, pile, the first draining
Valve, the second moisture trap, the second drain valve, exhaust valve and circulating pump；
The entrance of first moisture trap is connect with the export pipeline of the hydrogen supply component, first gas-water separation
The hydrogen inlet piping connection of the gas outlet of device and the pile, the water outlet and the first row of first moisture trap
Water valve piping connection；
The entrance of second moisture trap and the hydrogen outlet piping connection of the pile, second gas-water separation
First gas outlet of device by triple valve respectively with the exhaust valve and the first drain valve piping connection, second air water
Second gas outlet of separator is connect by the circulating pump with the entrance pipe of first moisture trap, second gas
The water outlet of separator and the second drain valve piping connection.
It is further preferred that further include:
The pipeline that first moisture trap is connect with the pile is arranged in pressure sensor, the pressure sensor
On.
It is further preferred that further include:
Relief valve, the gas outlet of first moisture trap pass through the hydrogen inlet pipe of the relief valve and the pile
Road connection；
Mixer, the pressure relief opening of the relief valve and the mixer piping connection, the outlet of the exhaust valve and described
The outlet of second drain valve respectively with the mixer piping connection.
It is further preferred that further include:
The pipeline that first moisture trap is connect with the pile is arranged in temperature sensor, the temperature sensor
On.
It is further preferred that the hydrogen supply component includes high pressure hydrogen supply component, hydrogen inlet valve and the pressure of successively piping connection
Regulating valve；
The outlet of the pressure-regulating valve is connect with the entrance pipe of first moisture trap.
It is further preferred that first moisture trap and second moisture trap are respectively screen type air water point
From device or cyclone separating moisture trap.
It is further preferred that further include:
Controller, the controller are electrically connected with the first drain valve, the second drain valve, exhaust valve and circulating pump respectively.
It is further preferred that first drain valve, second drain valve and the exhaust valve are respectively solenoid valve.
Compared with prior art, the beneficial effect that a kind of on-vehicle fuel water management system provided by the utility model has
Fruit are as follows: the utility model can configure a variety of drainages by the opening and closing of control the first drain valve, the second drain valve and exhaust valve
Air circuit, this system under different operating conditions, select different drainage exhaust circuits to realize circulating hydrogen in pressure hydrogen
Since the liquid water that condensation is formed is separated by auxiliary moisture trap in air pipe, and liquid water is discharged or hydrogen is carried out
Humidification to prevent pile anode humidification insufficient or humidification volume, and then avoids gas from being distributed not between each unit in electrode
Uniformly, so that fuel battery performance declines, and each single battery voltage consistency in fuel cell pile is caused to be deteriorated, and then improve
The operational efficiency and performance of fuel cell pile；In addition, also can avoid because of valve in low temperature environment because icing can not be just normally opened
It opens, the phenomenon that pile low-temperature cool starting failure occurs.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to a kind of on-vehicle fuel water
Above-mentioned characteristic, technical characteristic, advantage and its implementation of management system are further described.
Fig. 1 is a kind of structural schematic diagram of on-vehicle fuel water management system of the utility model.
Drawing reference numeral explanation
1, high pressure hydrogen supply component；2, hydrogen inlet valve；3, pressure-regulating valve；4, the first moisture trap；5, relief valve；6, temperature
Sensor；7, pressure sensor；8, pile；9, the second moisture trap；10, circulating pump；11, the second drain valve；12, it is vented
Valve；13, the first drain valve；14, mixer.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.
To make simplified form, part relevant to the utility model is only schematically shown in each figure, they are not
Represent its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
The component of energy, only symbolically depicts one of those, or only marked one of those.Herein, "one" is not only
It indicates " only this ", can also indicate the situation of " more than one ".
According to first embodiment provided by the utility model, as shown in Figure 1, a kind of on-vehicle fuel water management system,
Including hydrogen supply component, the first moisture trap 4, pile 8, the first drain valve 13, the second moisture trap 9, the second drain valve 11,
Exhaust valve 12 and circulating pump 10；
The entrance of first moisture trap 4 is connect with the export pipeline of hydrogen supply component, and hydrogen supply component is used to provide hydrogen, the
The gas outlet of one moisture trap 4 and the hydrogen inlet piping connection of pile 8, the water outlet and first of the first moisture trap 4
13 piping connection of drain valve.
The entrance of second moisture trap 9 and the hydrogen outlet piping connection of pile 8, the first of the second moisture trap 9
By triple valve respectively with 13 piping connection of exhaust valve 12 and the first drain valve, the second of the second moisture trap 9 go out for gas outlet
Port is connect by circulating pump 10 with the entrance pipe of the first moisture trap 4, the water outlet and second of the second moisture trap 9
11 piping connection of drain valve.
The course of work of on-vehicle fuel water management system are as follows:
The hydrogen come out from hydrogen supply component enters pile 8 after the first moisture trap 4 and is reacted, in pile 8 not
Reacted hydrogen enters the second moisture trap 9.
When the first drain valve 13 is opened, exhaust valve 12 is closed, liquid water that the first moisture trap 4 is isolated passes through the
One drain valve 13 enters the second moisture trap 9, and the hydrogen that the second moisture trap 9 is isolated returns to first through circulating pump 10
The entrance of moisture trap 4.
When the first drain valve 13 is opened, exhaust valve 12 is opened, liquid water that the first moisture trap 4 is isolated passes through the
One drain valve 13 and exhaust valve 12 are discharged, and have a small amount of gas under the action of atmosphere through being vented in the second moisture trap 9
Valve 12 is discharged, and to exclude the foreign gas (predominantly nitrogen) gathered in the second moisture trap 9, foreign gas is avoided to exist always
It is recycled in system, reduces concentration of the impurity in entire circuit, avoid impurity from excessively entering pile 8, influence the performance of pile 8.
When the first drain valve 13 is closed, exhaust valve 12 is opened, a small amount of gas in the second moisture trap 9 (hydrogen and
Impurity nitrogen) it is discharged from exhaust valve 12, to reduce concentration of the impurity in entire circuit.The maneuverability of detection pile 8 can be passed through
Can, it is exhausted to determine whether needing to open exhaust valve 12.In practical work process, time that exhaust valve 12 is opened every time
It is shorter, it is discharged to avoid hydrogen a large amount of in the second gas-water separation through exhaust valve 12, waste of energy.
When the second drain valve 11 is opened, liquid water is discharged through the second drain valve 11 in the second moisture trap 9.
In the utility model, the first drain valve 13, the second drain valve 11 and exhaust valve 12 are normally closed switch solenoid valve.It is logical
The opening and closing of control the first drain valve 13, the second drain valve 11 and exhaust valve 12 is crossed, can configure a variety of drainage exhaust circuits, makes the
One moisture trap 4 and the second moisture trap 9 can realize individual drainage, and be additionally provided with exhaust outlet on the second moisture trap 9,
The foreign gas in circulation loop is excluded by exhaust valve 12.
For example, system room temperature is run, when 8 anode of pile humidifies insufficient (dry film), the second drain valve 11 and exhaust valve 12
It is in close state, opens the first drain valve 13, the liquid water separated in the first moisture trap 4 is made to enter the second gas-water separation
The saturation wet hydrogen that circulating hydrogen is humidified in device 9, and then makes to be recycled back to through circulating pump 10 with come out from hydrogen supply component
Dry hydrogen gas mixes in 4 entrance of the first moisture trap, then isolates liquid water through the first moisture trap 4.
When system room temperature is run, and 8 anode of pile humidifies excessive (water logging), by opening the second drain valve 11 or opening simultaneously
The first drain valve 13 and exhaust valve 12 are opened, the liquid water in the second moisture trap 9 and/or the first moisture trap 4 is direct
Discharge, with the amount of the liquid water in reduction system.
The humidification situation of 8 anode of pile can be judged by measuring the monomer voltage of pile 8.Water it is excessive it is very few all
It will lead to some abnormal conditions inside pile 8, such as when dilutional hyponatremia, water will block the gas passage inside pile 8,
Causing gas to enter less than catalytic inner, and causes effectively to divide and can reduce, intuitive reaction is exactly monomer voltage decline, and
Each single battery voltage in system is caused to differ.Therefore, 8 anode of pile can be judged by each monomer voltage in measurement pile 8
Humidify situation.It may also be combined with the displacement of moisture trap in the judgment process to be judged.
When on-vehicle fuel water management system stops working, the first drain valve 13 and the second drain valve 11 are opened, it will
Liquid water in first moisture trap 4 and the second moisture trap 9 drains, and is purged.
In system work process, since the liquid water in the first moisture trap 4 is less, during the work time
By all discharges of the first drain valve 13, and the opening time settable ground of the first drain valve 13 is longer；But the second draining
Valve 11 cannot be constantly in open state, because will lead to second when the long-term unlatching of the second drain valve 11 or longer opening time
Hydrogen in moisture trap 9 is discharged from the second drain valve 11；Therefore, in system stalls and after being purged, second
Still a small amount of water may remains inside drain valve 11.If system opens again after placing a period of time in the environment lower than zero degree
Dynamic, a small amount of water of 11 internal residual of the second drain valve can freeze, and will lead to the second drain valve 11 can not open, so that draining is lost
Effect.At this point, can be gathered in discharge circulation loop while excluding superfluous water by opening the first drain valve 13 and exhaust valve 12
Foreign gas.
There is the method using Electric heat radiator heating electromagnetic valve in the prior art, the phenomenon that avoid low-temperature cool starting from failing, but
It is that Electric heat radiator heating time is long, will increase the time started under 8 low temperature of pile, and additional electric energy will increase using Electric heat radiator,
Cause energy waste.
In the utility model, by controlling the opening and closing of the first drain valve 13, the second drain valve 11 and exhaust valve 12, it can configure
A variety of drainage exhaust circuits out, under different operating conditions, selecting different drainage exhaust circuits to realize will circulation for this system
Hydrogen separates in low pressure hydrogen pipeline since the liquid water that condensation is formed passes through auxiliary moisture trap, and liquid water is discharged
Or hydrogen is humidified, to prevent 8 anode of pile humidification insufficient or humidification volume, and then avoid gas in electrode and each list
It is unevenly distributed between member, so that fuel battery performance declines, and causes each single battery voltage consistency in fuel cell pile 8
It is deteriorated, and then improves the operational efficiency and performance of fuel cell pile 8；In addition, also can avoid because of valve in low temperature environment because of knot
Ice and can not be normally-open, occur 8 low-temperature cool starting of pile failure the phenomenon that.
According to second embodiment provided by the utility model, as shown in Figure 1, base of the present embodiment in above-mentioned first embodiment
It further include pressure sensor 7 on plinth, pressure sensor 7 is arranged on the pipeline that the first moisture trap 4 is connect with pile 8.
After opening the second drain valve 11, pressure sensor 7 is available by the pressure wave momentum of detection 8 hydrogen inlet of pile
Whether the liquid water in the second moisture trap of auxiliary judgment 9, which discharges, finishes.Have in the second moisture trap 9 liquid water,
Hydrogen and vaporous water with certain partial pressure.Hydrogen density is much smaller than the density of liquid water, and hydrogen is in the second gas-water separation
Upper layer gaseous space is in device 9, liquid water is located at the bottom of the second moisture trap 9.What pressure sensor 7 detected is pile
The pressure of 8 inlet gas, after the liquid water in the second moisture trap 9 is drained, the gas in upper space can be from bottom
The discharge of two drain valves 11, causes 8 entrance Hydrogen Vapor Pressure transient fluctuation of pile larger.
If pressure wave momentum is always less than normal row's hydrogen pressure fluctuation range, illustrate the liquid in the second moisture trap 9
State water, which does not discharge, to be finished, and needs to be appropriately extended the opening time of the second drain valve 11.Wherein, hydrogen pressure fluctuation range root is normally arranged
It is obtained according to the operating pressure of pile 8.
If pressure wave momentum becomes greater than or is equal to normal row's hydrogen pressure fluctuation from normal row's hydrogen pressure fluctuation range is less than
Range then illustrates that the liquid water discharge in the second moisture trap 9 finishes, needs to close the second drain valve 11.
The pressure oscillation value of 8 hydrogen inlet of pile is detected by pressure sensor 7 to judge in the second moisture trap 9
Liquid water whether discharge and finish, and then judge whether the opening time of the second drain valve 11 reasonable, to prevent second row water valve
11 because the opening time is too long, and the hydrogen in the second moisture trap 9 is caused to be discharged, and reduces the utilization rate of hydrogen, wastes energy
Source；It can also prevent the second drain valve 11 from causing the liquid water in the second moisture trap 9 not arranged sufficiently because the opening time is too short
Out, cause 8 anode of pile humidification excessive, influence the operational efficiency and performance of pile 8.
According to 3rd embodiment provided by the utility model, as shown in Figure 1, the present embodiment is in above-mentioned first embodiment or
On the basis of two embodiments, further includes: relief valve 5 and mixer 14；The gas outlet of first moisture trap 4 passes through relief valve 5
With the hydrogen inlet piping connection of pile 8；The pressure relief opening of relief valve 5 and 14 piping connection of mixer, the outlet of exhaust valve 12 and
The outlet of second drain valve 11 respectively with 14 piping connection of mixer.
Hydrogen Vapor Pressure can be adjusted to suitable pressure by pressure-regulating valve 3, then when exporting hydrogen by hydrogen supply component
It send to 8 anode inlet of pile.But when the pressure-regulating valve 3 in hydrogen supply component fails, it is excessively high to will lead to Hydrogen Vapor Pressure, makes
The high pressure hydrogen obtained into pile 8 causes fatefulue destruction to pile 8.The present embodiment in 8 anode inlet of pile by setting
Relief valve 5 is set, and the operating pressure of relief valve 5 is set, pressure release can be passed through when the pressure-regulating valve 3 in hydrogen supply component fails
Valve 5 carries out pressure release, avoids the gas of high pressure from entering pile 8 and causes fatefulue destruction to pile 8, and then improves pile 8
Service life.
Preferably, system further includes temperature sensor 6, and the setting of temperature sensor 6 is in the first moisture trap 4 and pile 8
On the pipeline of connection.Temperature sensor 6 can be used for detecting the temperature of the hydrogen into pile 8.
Preferably, hydrogen supply component includes high pressure hydrogen supply component 1, hydrogen inlet valve 2 and the pressure-regulating valve 3 of successively piping connection；
The outlet of pressure-regulating valve 3 is connect with the entrance pipe of the first moisture trap 4.Pressure-regulating valve 3 is for adjusting Hydrogen Vapor Pressure.
During the work time, Hydrogen Vapor Pressure is decompressed to 10 ± 1barA by high pressure hydrogen supply component 1, and then pressure-regulating valve 3 will
Hydrogen Vapor Pressure is adjusted to 1.2-2.5barA.The vent pressure of relief valve 5 is set according to the operating pressure of pile 8, is such as set
For 2.7barA.
Preferably, the first moisture trap 4 and the second moisture trap 9 are respectively screen type or cyclone separating air water point
From device.
It preferably, further include controller (fuel battery engines control unit FCU), fuel battery engines control unit
(FCU) with temperature sensor 6, pressure sensor 7, the first drain valve 13, the second drain valve 11, exhaust valve 12, circulating pump 10 and
Pressure-regulating valve 3 is electrically connected.Fuel battery engines control unit (FCU) temperature collection sensor 6,7 data of pressure sensor,
Control the open state of the first drain valve 13, the second drain valve 11 and exhaust valve 12, and the revolving speed and pressure of control loop pump 10
The adjusting pressure of force regulating valve 3.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of on-vehicle fuel water management system, which is characterized in that including hydrogen supply component, the first moisture trap, pile,
First drain valve, the second moisture trap, the second drain valve, exhaust valve and circulating pump；
The entrance of first moisture trap is connect with the export pipeline of the hydrogen supply component, first moisture trap
The hydrogen inlet piping connection of gas outlet and the pile, the water outlet of first moisture trap and first drain valve
Piping connection；
The entrance of second moisture trap and the hydrogen outlet piping connection of the pile, second moisture trap
First gas outlet by triple valve respectively with the exhaust valve and the first drain valve piping connection, second gas-water separation
Second gas outlet of device is connect by the circulating pump with the entrance pipe of first moisture trap, second air water point
From the water outlet of device and the second drain valve piping connection.
2. a kind of on-vehicle fuel water management system according to claim 1, which is characterized in that further include:
Pressure sensor, the pressure sensor are arranged on the pipeline that first moisture trap is connect with the pile.
3. a kind of on-vehicle fuel water management system according to claim 1 or 2, which is characterized in that further include:
The gas outlet of relief valve, first moisture trap is connected by the hydrogen inlet pipeline of the relief valve and the pile
It connects；
Mixer, the pressure relief opening of the relief valve and the mixer piping connection, the outlet of the exhaust valve and described second
The outlet of drain valve respectively with the mixer piping connection.
4. a kind of on-vehicle fuel water management system according to claim 1, which is characterized in that further include:
Temperature sensor, the temperature sensor are arranged on the pipeline that first moisture trap is connect with the pile.
5. a kind of on-vehicle fuel water management system according to claim 1, which is characterized in that the hydrogen supply component packet
Include high pressure hydrogen supply component, hydrogen inlet valve and the pressure-regulating valve of successively piping connection；
The outlet of the pressure-regulating valve is connect with the entrance pipe of first moisture trap.
6. a kind of on-vehicle fuel water management system according to claim 1, which is characterized in that first air water point
It is respectively screen type moisture trap or cyclone separating moisture trap from device and second moisture trap.
7. a kind of on-vehicle fuel water management system according to claim 1, which is characterized in that further include:
Controller, the controller are electrically connected with the first drain valve, the second drain valve, exhaust valve and circulating pump respectively.
8. a kind of on-vehicle fuel water management system according to claim 1, which is characterized in that first draining
Valve, second drain valve and the exhaust valve are respectively solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920644658.4U CN209691856U (en) | 2019-05-07 | 2019-05-07 | A kind of on-vehicle fuel water management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920644658.4U CN209691856U (en) | 2019-05-07 | 2019-05-07 | A kind of on-vehicle fuel water management system |
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| Publication Number | Publication Date |
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| CN209691856U true CN209691856U (en) | 2019-11-26 |
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ID=68608558
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| CN201920644658.4U Active CN209691856U (en) | 2019-05-07 | 2019-05-07 | A kind of on-vehicle fuel water management system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010932A (en) * | 2019-05-07 | 2019-07-12 | 上海燃料电池汽车动力系统有限公司 | A kind of on-vehicle fuel water management system and method |
| CN114388856A (en) * | 2022-01-17 | 2022-04-22 | 潍柴动力股份有限公司 | Control method, device, equipment and medium for tail exhaust valve of fuel cell system |
| US11862827B2 (en) | 2022-02-11 | 2024-01-02 | Ford Global Technologies, Llc | System and method of enhanced purge strategy for fuel cell in vehicle |
-
2019
- 2019-05-07 CN CN201920644658.4U patent/CN209691856U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010932A (en) * | 2019-05-07 | 2019-07-12 | 上海燃料电池汽车动力系统有限公司 | A kind of on-vehicle fuel water management system and method |
| CN110010932B (en) * | 2019-05-07 | 2024-06-14 | 上海燃料电池汽车动力系统有限公司 | Vehicle-mounted fuel cell water management system and method |
| CN114388856A (en) * | 2022-01-17 | 2022-04-22 | 潍柴动力股份有限公司 | Control method, device, equipment and medium for tail exhaust valve of fuel cell system |
| US11862827B2 (en) | 2022-02-11 | 2024-01-02 | Ford Global Technologies, Llc | System and method of enhanced purge strategy for fuel cell in vehicle |
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