CN114370358A - Hydrocarbon emission control method and control device for hybrid vehicle - Google Patents
Hydrocarbon emission control method and control device for hybrid vehicle Download PDFInfo
- Publication number
- CN114370358A CN114370358A CN202111451402.XA CN202111451402A CN114370358A CN 114370358 A CN114370358 A CN 114370358A CN 202111451402 A CN202111451402 A CN 202111451402A CN 114370358 A CN114370358 A CN 114370358A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- oil
- engine
- vapor
- canister
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 47
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 47
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003502 gasoline Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 57
- 229910052799 carbon Inorganic materials 0.000 claims description 57
- 239000000446 fuel Substances 0.000 claims description 45
- 238000003795 desorption Methods 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 11
- 239000002828 fuel tank Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims 2
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 150
- 239000000295 fuel oil Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000003915 air pollution Methods 0.000 description 5
- 238000003912 environmental pollution Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
-
- 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
- F02M25/0854—Details of the absorption canister
-
- 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
- F02M25/089—Layout of the fuel vapour installation
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/50—Filters arranged in or on fuel tanks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention provides a hydrocarbon emission control method and equipment of a hybrid vehicle, wherein the hydrocarbon emission control equipment comprises a master control unit, an oil storage tank, an engine, a steam storage tank, a first sensor and an air pump, wherein the oil storage tank, the engine, the steam storage tank, the first sensor and the air pump are respectively connected with the master control unit, the steam storage tank is respectively connected with the oil storage tank and the engine, and the oil storage tank is connected with the engine, and the method comprises the following steps: when the first sensor monitors that the saturation of the oil vapor in the vapor storage tank reaches a first preset saturation threshold value, the master control unit controls the engine and the air pump to be started so that the engine pumps the gasoline in the vapor storage tank, and the air pump conveys the oil vapor in the vapor storage tank to the engine; when the first sensor monitors that the saturation of steam in the steam storage tank is reduced to a second preset saturation threshold value, the master control unit controls the engine and the air pump to be closed. The hydrocarbon emission control method of the hybrid vehicle can prevent oil vapor in the oil storage tank from volatilizing into air, and meets the hydrocarbon evaporation emission regulation requirements of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a hydrocarbon emission control method and control equipment of a hybrid vehicle.
Background
With the rapid development of economy, the environmental pollution is more and more serious. Regulations are becoming stricter for controlling pollutant emissions of vehicles, and in the latest national six-publication type IV test, the hydrocarbon evaporative emission of a single vehicle is reduced from the previous 2g/test to 0.7g/24 h.
Among the prior art, hybrid vehicle is because of there being the electronic mode, and the hybrid electric car has the condition of using electricelectric for a long time, because the fuel in the oil tank constantly volatilizees this moment to make the oil vapor in the steam storage tank reach the saturation, in order to prevent that the oil tank is in high-pressure dangerous state, the steam that is difficult to adsorb in the steam storage tank this moment can only discharge into the air, thereby causes environmental pollution easily, does not conform to the six carbon hydrogen emission standard requirements of state.
Disclosure of Invention
Based on this, the invention aims to provide a hydrocarbon emission control method and a control device of a hybrid vehicle, so as to solve at least one of the problems.
The hydrocarbon emission control device comprises a master control unit, an oil storage tank, an engine, a steam storage tank, a first sensor and an air pump, wherein the oil storage tank, the engine, the steam storage tank, the first sensor and the air pump are respectively connected with the master control unit;
the hydrocarbon emission control method of the hybrid vehicle includes:
when the first sensor monitors that the saturation of the oil vapor in the vapor storage tank reaches a first preset saturation threshold value, the master control unit controls the engine and the air pump to be started so that the engine pumps the gasoline in the oil storage tank and the air pump delivers the oil vapor in the vapor storage tank to the engine;
when the first sensor monitors that the saturation of steam in the steam storage tank is reduced to a second preset saturation threshold value, the master control unit controls the engine and the air pump to be closed.
In summary, according to the above-mentioned hydrocarbon emission control method for a hybrid vehicle, the excess oil vapor is actively input into the engine to be consumed, so as to avoid directly discharging into the air to cause air pollution. Specifically, when the first sensor monitors that the saturation of the oil vapor in the vapor storage tank reaches a first preset saturation threshold, it is explained that the oil vapor in the vapor storage tank is saturated at the moment and cannot adsorb the oil vapor volatilized from the oil storage tank through the pipeline, at the moment, the master control unit can actively control the engine and the air pump to be started, the air pump operates to increase the desorption amount of the vapor storage tank so that the desorbed oil vapor is input into the engine to be consumed, and when the first sensor monitors that the saturation of the oil vapor in the vapor storage tank at the moment is reduced to a second preset saturation threshold in real time, the master control unit controls the engine and the air pump to stop operating, so that the saturation of the oil vapor in the vapor storage tank is effectively ensured to be maintained in a safe range, and the problem of air pollution caused by the fact that redundant oil vapor is discharged into the air only in the conventional technology is solved.
Further, the steam storage tank includes first carbon tank and second carbon tank, first sensor is located on the first carbon tank, first carbon tank with the engine is connected, still include:
when the first sensor monitors that the saturation of the oil vapor in the first carbon tank reaches a first preset saturation threshold value, the master control unit controls the air pump to be started so as to input the oil vapor in the first carbon tank into the engine;
when the oil vapor saturation in the oil storage tank is monitored to reach a third preset saturation threshold value, the master control unit controls the first carbon tank and the second carbon tank to be opened so as to adsorb the oil vapor in the oil storage tank.
Further, a second sensor is arranged on the oil storage tank and used for monitoring the saturation of oil vapor in the oil storage tank, an isolation valve is arranged between the oil storage tank and the first carbon tank, and the method further comprises the following steps:
when the second sensor monitors that the saturation of the oil vapor in the oil storage tank is lower than a fourth preset saturation threshold value, the master control unit controls the isolation valve to be opened, and the oil vapor in the first carbon tank is input into the oil storage tank.
Further, a fuel filter is arranged between the fuel storage tank and the engine, a return pipeline is arranged between the fuel storage tank and the fuel filter, the fuel filter is used for filtering fuel, a high-pressure fuel rail is arranged in the engine, and the method further comprises the following steps:
when the engine is started, the master control unit controls the fuel filter to be started, and simultaneously controls a high-pressure fuel rail in the engine to be started, so that fuel oil in the fuel oil storage tank is filtered by the fuel oil filter and then is input into the engine, and redundant fuel oil flows back to the fuel oil storage tank through the backflow pipeline.
Further, the hydrocarbon emission control apparatus further includes an air filter and a canister shutoff valve, the canister shutoff valve is disposed between the second canister and the air filter, the air filter is connected to the second canister, a canister desorption valve is disposed between the air pump and the engine, and the method further includes:
when the second carbon tank is opened, the master control unit controls the carbon tank closing valve and the air filter to be opened, so that oil vapor in the second carbon tank is discharged to the outside after hydrocarbon substances are filtered by the air filter;
when the air pump is started, the main control unit opens the carbon tank desorption valve.
According to the embodiment of the invention, the hydrocarbon emission control device of the hybrid vehicle comprises a master control unit, and an oil storage tank, an engine, a steam storage tank, a first sensor and an air pump which are respectively connected with the master control unit, wherein the steam storage tank is used for storing oil vapor, the first sensor is used for monitoring the saturation of the steam storage tank, the air pump is used for desorbing the oil vapor in the steam storage tank, the steam storage tank is respectively connected with the oil storage tank and the engine, and the oil storage tank is connected with the engine.
Further, the steam storage tank includes first carbon tank and second carbon tank, first sensor is located on the first carbon tank, first carbon tank with the engine is connected.
Further, be equipped with the second sensor on the oil storage tank, the second sensor is used for monitoring the saturation of the oil vapor in the oil storage tank, the oil storage tank with be equipped with the isolating valve between the first carbon tank.
Further, the oil storage tank with be equipped with a fuel filter between the engine, the oil storage tank with be equipped with the return line between the fuel filter, fuel filter is used for filtering the fuel, be equipped with the high pressure oil rail in the engine.
Further, hydrocarbon emission control equipment still includes air cleaner and carbon canister shutoff valve, the carbon canister shutoff valve is located the second carbon canister with between the air cleaner, the air cleaner with the second carbon canister is connected, the air pump with be equipped with carbon canister desorption valve between the engine.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a hydrocarbon emission control apparatus of a hybrid vehicle according to a first embodiment of the present invention;
fig. 2 is a flowchart of a hydrocarbon emission control method of a hybrid vehicle according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a hydrocarbon emission control apparatus of a hybrid vehicle according to a second embodiment of the present invention.
Description of the main elements
| |
10 | |
20 |
| |
30 | |
301 |
| |
40 | |
201 |
| |
202 | |
101 |
| |
50 | |
60 |
| |
302 | |
303 |
| Carbon tank shut-off |
70 | |
80 |
| Carbon |
90 |
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a schematic structural diagram of a hydrocarbon control apparatus of a hybrid vehicle according to a first embodiment of the present invention is shown, including a general control unit, and an oil storage tank 10, an engine 20, a steam storage tank 30, a first sensor 301, and an air pump 40 connected to the general control unit, where:
the first sensor 301 is used for monitoring the saturation of the steam storage tank 30, the air pump 40 is used for desorbing oil vapor in the steam storage tank 30, the steam storage tank 30 is respectively connected with the oil storage tank 10 and the engine 20 through pipelines, the oil storage tank 10 is connected with the engine 20, the oil storage tank 10 is used for storing fuel oil, the gas storage tank 30 is used for adsorbing oil vapor so as to achieve a storage effect, the first sensor 301 is used for monitoring the saturation degree of the oil vapor in the gas storage tank 30 in real time, it should be noted that, the engine 20 is provided with a gas inlet unit 201 and a gas inlet unit 202, i.e. oil vapor is drawn from the vapor storage tank 30 through the self-contained vapor intake unit 201 without the air pump 40, fuel is drawn from the fuel tank 10 through the fuel inlet unit 202 to maintain the operation of the engine 20, and the air pump 40 is provided between the vapor storage tank 30 and the engine 20, and the desorption amount of the vapor storage tank 30 can be increased by providing the air pump 40.
Further, a second sensor 101 is arranged on the oil storage tank 10, the second sensor 101 is used for monitoring the saturation of oil vapor in the oil storage tank 10, an isolation valve 50 is arranged between the oil storage tank 10 and the vapor storage tank 30, the isolation valve 50 and the second sensor 101 are both electrically connected with a master control unit, in the actual use process of the vehicle, the oil storage tank 10 can contain oil vapor with a certain pressure, the isolation valve 50 is arranged for preventing the oil vapor in the oil storage tank 10 from volatilizing into the vapor storage tank 30 in a large quantity, so that a certain amount of oil vapor is contained in the oil storage tank 10, and further volatilization of oil can be inhibited.
It is understood that the apparatus further includes a fuel filter 60, the fuel filter 60 is disposed in a pipeline connecting the oil storage tank 10 and the engine 20, so that the oil in the oil storage tank 10 can be input into the engine 20 through the fuel filter 60, and a return pipeline is disposed between the oil storage tank 10 and the fuel filter 60, that is, after the oil in the oil storage tank 10 is filtered by the fuel filter 60, the surplus oil can also return to the oil storage tank 10, it should be noted that the oil inlet unit 202 includes a high-pressure oil rail disposed in the engine 20, and when the engine 20 is running, the high-pressure oil rail can draw the oil in the oil storage tank 10 into the engine 20.
Another aspect of the present invention provides a hydrocarbon emission control method for a hybrid vehicle, referring to fig. 2, which is a flowchart illustrating the hydrocarbon emission control method for the hybrid vehicle according to the present embodiment, the method includes steps S01 to S03, wherein:
step S01: when the first sensor 301 detects that the saturation of the oil vapor in the vapor storage tank 30 reaches a first preset saturation threshold, the master control unit controls the engine 20 and the air pump 40 to be started, so that the engine 20 pumps the gasoline in the oil storage tank 10, and the air pump 40 delivers the oil vapor in the vapor storage tank 30 to the engine 20;
it should be noted that, since the higher the saturation of the oil vapor, the higher the pressure in the corresponding vapor storage tank 30, that is, the saturation of the oil vapor has a direct proportional relationship with the pressure in the vapor storage tank 30, in this embodiment, the first sensor 301 is configured as a pressure sensor, that is, a pressure signal in the oil vapor is monitored by the pressure sensor, and the pressure value is transmitted to the general control unit, and the general control unit analyzes the saturation of the oil vapor in the vapor storage tank 30 by the pressure signal.
Further, when the total control unit analyzes that the saturation of the oil vapor in the vapor storage tank 30 is equal to or greater than a first preset saturation threshold, it indicates that the vapor storage tank 30 cannot adsorb the oil vapor volatilized from the oil storage tank 10 any more, in order to prevent the oil vapor from being forced to be discharged into the air, at this time, even if the hybrid vehicle is in a full-power condition, the total control unit still controls the engine 20 to be started, in a "high-temperature driving" condition, the running time of the engine 20 is increased, in addition, because the air pump 40 is added, the flow during desorption is increased, and the desorption capacity of the whole vehicle to the vapor storage tank 30 is stronger.
It will be appreciated that whenever the engine 20 is started, the general control unit will also control the fuel filter 60 and the high pressure rail in the engine 20 to open to feed fuel from the reservoir 10 through the fuel filter 60 to the engine 20, with excess fuel flowing back to the reservoir 10 through the return line.
Step S02: when the first sensor 301 monitors that the saturation of the steam in the steam storage tank 30 is reduced to a second preset saturation threshold, the master control unit controls the engine 20 and the air pump 40 to be closed;
it can be understood that, by turning on the engine 20 to consume the excess oil vapor, at this time, the saturation of the oil vapor in the vapor storage tank 30 will be continuously decreased, and when the pressure sensor monitors that the pressure value in the vapor storage tank 30 is smaller than the pressure value corresponding to the second preset saturation threshold, it indicates that the vapor storage tank 30 has sufficient adsorption capacity, and meanwhile, the pressure in the vapor storage tank 30 is in a safe and stable range, and the master control unit further turns off the air pump 40 and the engine 20.
It should be noted that the first preset saturation threshold and the second preset saturation threshold are related to a specific safety range of the steam storage tank 30, that is, when the positive pressure and the negative pressure that can be borne by the steam storage tank 30 are larger, the corresponding first preset saturation threshold and the corresponding second saturation threshold may also be correspondingly set to be larger, and vice versa, and therefore, the first preset saturation threshold and the second preset saturation threshold are not specifically limited in this embodiment.
Step S03: when the second sensor 101 detects that the saturation of the oil vapor in the oil storage tank 10 is lower than a fourth preset saturation threshold, the general control unit controls the isolation valve 50 to open, and the oil vapor in the vapor storage tank 30 is input into the oil storage tank 10.
It can be understood that, because the fuel evaporation in the oil storage tank 10 is affected by the usage environment, such as temperature, etc., the saturation of the oil vapor in the oil storage tank 10 may be too high or too low, based on this, the second sensor 101 is arranged to monitor the pressure signal in the oil storage tank 10 and send the pressure signal to the general control unit, when the general control unit judges that the saturation of the oil vapor in the oil storage tank 10 is lower than the fourth preset saturation threshold, it indicates that the oil vapor in the oil storage tank 10 is seriously insufficient at this time, and a negative pressure condition has occurred, and at this time, the general control unit controls the isolation valve 50 to open, so that the oil vapor in the vapor storage tank 30 is supplemented into the oil storage tank 10, and similarly, when the saturation of the oil vapor in the oil storage tank 10 is higher than the fifth preset saturation threshold, it indicates that the pressure in the oil storage tank 10 is higher at this time, in order to prevent the oil vapor from further evaporating to cause the pressure in the oil storage tank 10 to be too high, when a leakage occurs, the general control unit also controls the isolation valve 50 to open so that the oil vapor in the oil storage tank 10 is input into the vapor storage tank 30 and adsorbed.
By way of example and not limitation, in the present embodiment, the pressure value corresponding to the fourth preset saturation threshold is-9 kpa, and the pressure value corresponding to the fifth preset saturation threshold is 32kpa, that is, the opening pressure of the isolation valve 50 is above 32kpa or below-9 kpa, it can be understood that in other embodiments of the present invention, the fourth preset saturation threshold and the fifth preset saturation threshold may also be set to other values, so that the pressure in the oil storage tank 10 is within a safe and stable range.
In summary, according to the above-described hydrocarbon emission control method for a hybrid vehicle, the excess oil vapor is actively supplied to the engine 20 to be consumed, so as to prevent the oil vapor from being directly discharged into the air to cause air pollution. Specifically, when the first sensor 301 detects that the saturation of the oil vapor in the vapor storage tank 30 reaches a first preset saturation threshold, it is indicated that the oil vapor in the vapor storage tank 30 is saturated at this time and cannot adsorb the oil vapor volatilized from the oil storage tank 10 and input through the pipeline any more, at this time, the master control unit actively controls the engine 20 and the air pump 40 to be started, the air pump 40 operates to increase the desorption amount of the vapor storage tank 30, so that the desorbed oil vapor is input into the engine 20 for consumption, when the first sensor 301 detects that the saturation of the oil vapor in the vapor storage tank 30 at this time is reduced to a second preset saturation threshold in real time, the master control unit controls the engine 20 and the air pump 40 to stop operating, thereby effectively ensuring that the saturation of the oil vapor in the vapor storage tank 30 is maintained within a safe range, and solving the problem that the redundant oil vapor in the conventional technology can only be discharged into the air, causing air pollution.
Referring to fig. 3, a schematic structural diagram of a hydrocarbon discharge apparatus of a hybrid vehicle according to a second embodiment of the present invention is shown, where the hydrocarbon discharge apparatus of the hybrid vehicle in this embodiment has substantially the same structure as the hydrocarbon discharge apparatus of the hybrid vehicle in the first embodiment, and the difference is that:
the hydrocarbon emission control apparatus of a hybrid vehicle in the present embodiment is based on the first embodiment, and divides the gas storage tank 30 into a first canister 302 and a second canister 303, the first sensor 301 is provided on the first canister 302, the first canister 302 is connected to the oil storage tank 10 and the engine 20, respectively, the air pump 40 is provided between the first canister 302 and the engine 20, specifically, when the first sensor 301 monitors that the saturation of the oil vapor in the first carbon tank 302 reaches a first preset saturation threshold, the general control unit controls the air pump 40 to be started, to input the oil vapor in the first canister 302 into the engine 20, when the oil vapor in the reservoir tank 10 is insufficient, the oil vapor in the first canister 302 may be inputted into the oil reservoir 10, and when the oil vapor in the oil reservoir 10 is excessive, the oil vapor in the oil reservoir 10 may be inputted into the first canister 302 to be adsorbed.
On the contrary, when monitoring that the oil vapor saturation in the oil storage tank 10 reaches a third preset saturation threshold, the master control unit controls the first carbon tank 302 and the second carbon tank 303 to be opened so as to adsorb the oil vapor in the oil storage tank 10, it should be noted that, because the adsorption amount of the first carbon tank 302 to the oil vapor is limited, the second carbon tank 303 is arranged to supplement and adsorb redundant oil vapor, so as to prevent the oil vapor from being forcibly discharged into the air, and meanwhile, because the master control unit controls to open the engine 20 after the pressure value of the first carbon tank 302 is monitored to reach the peak value, a certain gap time exists, and the second carbon tank 303 is arranged to provide a certain buffer for the master control unit to open the engine 20 so as to consume the redundant oil vapor.
Further, hydrocarbon emission control equipment still includes air cleaner 80 and carbon canister shutoff valve 70, carbon canister shutoff valve 70 is located second carbon canister 303 with between the air cleaner 80, air cleaner 80 with second carbon canister 303 is connected, air pump 40 with be equipped with carbon canister desorption valve 90 between the engine 20, can keep apart the oil vapor in the first carbon canister 302 and get into in the engine 20 through setting up hydrocarbon desorption valve, when air pump 40 opens, total control unit carbon canister desorption valve 90 opens. Specifically, when the second canister 303 is opened, that is, the oil vapor is continuously input into the first canister 302 and the second canister 303 from the oil storage tank 10 at this time, the general control unit controls the canister closing valve 70 and the air filter 80 to be opened, so that the oil vapor in the second canister 303 is filtered by the air filter 80 and then discharged to the outside, thereby avoiding environmental pollution.
In summary, according to the hydrocarbon emission control apparatus of the hybrid vehicle described above, the excess oil vapor is actively input to the engine 20 to be consumed, so as to avoid direct discharge into the air to cause air pollution. Specifically, the steam storage tank 30 is divided into a first carbon tank 302 and a second carbon tank 303, the saturation value of the oil vapor of the first carbon tank 302 is monitored in real time through a first sensor 301, and then the excessive oil vapor is consumed, meanwhile, the second carbon tank 303 is arranged to continuously adsorb the oil vapor which is not input into the engine 20, and the oil vapor in the second carbon tank 303 can be discharged into the air after being filtered by an air filter 80, so that the problem of environmental pollution caused by the direct discharge of hydrocarbon gas into the air is solved, and the national emission standard requirement of the hydrocarbon is met.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A hydrocarbon emission control method of a hybrid vehicle, which is implemented by a hydrocarbon emission control apparatus, characterized in that:
the hydrocarbon emission control equipment comprises a master control unit, and an oil storage tank, an engine, a steam storage tank, a first sensor and an air pump which are respectively connected with the master control unit, wherein the steam storage tank is used for storing oil vapor, the first sensor is used for monitoring the saturation of the steam storage tank, the air pump is used for desorbing the oil vapor in the steam storage tank, the steam storage tank is respectively connected with the oil storage tank and the engine, and the oil storage tank is connected with the engine;
the hydrocarbon emission control method of the hybrid vehicle includes:
when the first sensor monitors that the saturation of the oil vapor in the vapor storage tank reaches a first preset saturation threshold value, the master control unit controls the engine and the air pump to be started so that the engine pumps the gasoline in the oil storage tank and the air pump delivers the oil vapor in the vapor storage tank to the engine;
when the first sensor monitors that the saturation of steam in the steam storage tank is reduced to a second preset saturation threshold value, the master control unit controls the engine and the air pump to be closed.
2. The hydrocarbon emission control method of the hybrid vehicle according to claim 1, wherein the vapor storage tank includes a first canister and a second canister, the first sensor is provided on the first canister, the first canister is connected to the engine, and the method further comprises:
when the first sensor monitors that the saturation of the oil vapor in the first carbon tank reaches a first preset saturation threshold value, the master control unit controls the air pump to be started so as to input the oil vapor in the first carbon tank into the engine;
when the oil vapor saturation in the oil storage tank is monitored to reach a third preset saturation threshold value, the master control unit controls the first carbon tank and the second carbon tank to be opened so as to adsorb the oil vapor in the oil storage tank.
3. The hydrocarbon emission control method of a hybrid vehicle according to claim 2, wherein a second sensor is provided on the oil reservoir for monitoring a saturation level of oil vapor in the oil reservoir, an isolation valve is provided between the oil reservoir and the first canister, and the method further comprises:
when the second sensor monitors that the saturation of the oil vapor in the oil storage tank is lower than a fourth preset saturation threshold value, the master control unit controls the isolation valve to be opened, and the oil vapor in the first carbon tank is input into the oil storage tank.
4. The method of claim 1, wherein a fuel filter is disposed between the fuel reservoir and the engine, a return line is disposed between the fuel reservoir and the fuel filter, the fuel filter is configured to filter fuel, a high pressure rail is disposed in the engine, and the method further comprises:
when the engine is started, the master control unit controls the fuel filter and a high-pressure fuel rail in the engine to be opened so that fuel in the fuel storage tank is filtered by the fuel filter and then is input into the engine, and redundant fuel flows back to the fuel storage tank through the return pipeline.
5. The hydrocarbon emission control method of the hybrid vehicle according to claim 2, wherein the hydrocarbon emission control apparatus further includes an air filter and a canister shutoff valve, the canister shutoff valve being provided between the second canister and the air filter, the air filter being connected to the second canister, a canister purge valve being provided between the air pump and the engine, the method further comprising:
when the second carbon tank is opened, the master control unit controls the carbon tank closing valve and the air filter to be opened, so that oil vapor in the second carbon tank is discharged to the outside after hydrocarbon substances are filtered by the air filter;
when the air pump is started, the main control unit opens the carbon tank desorption valve.
6. The utility model provides a hydrocarbon of hybrid vehicle discharges controlgear, a serial communication port, hydrocarbon discharge controlgear including total control unit and respectively with batch oil tank, engine, steam storage tank, first sensor and the air pump that total control unit connects, steam storage tank is used for the monitoring of storage steam, and first sensor is used for the saturation of steam storage tank, the air pump is used for right oil steam in the steam storage tank carries out the desorption, steam storage tank respectively with the batch oil tank with the engine is connected, the batch oil tank with the engine is connected.
7. The hydrocarbon emission control apparatus of the hybrid vehicle according to claim 6, wherein the vapor storage tank includes a first canister and a second canister, the first sensor is provided on the first canister, and the first canister is connected to the engine.
8. The hydrocarbon emission control apparatus of a hybrid vehicle according to claim 7, wherein a second sensor is provided on the oil reservoir for monitoring a saturation level of the oil vapor in the oil reservoir, and an isolation valve is provided between the oil reservoir and the first canister.
9. The hydrocarbon emission control apparatus of a hybrid vehicle according to claim 6, wherein a fuel filter is provided between the fuel tank and the engine, a return line is provided between the fuel tank and the fuel filter, the fuel filter is configured to filter fuel, and a high-pressure fuel rail is provided in the engine.
10. The hydrocarbon emission control apparatus of the hybrid vehicle according to claim 7, further comprising an air filter and a canister shutoff valve, the canister shutoff valve being provided between the second canister and the air filter, the air filter being connected to the second canister, and a canister purge valve being provided between the air pump and the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451402.XA CN114370358A (en) | 2021-11-30 | 2021-11-30 | Hydrocarbon emission control method and control device for hybrid vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451402.XA CN114370358A (en) | 2021-11-30 | 2021-11-30 | Hydrocarbon emission control method and control device for hybrid vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114370358A true CN114370358A (en) | 2022-04-19 |
Family
ID=81139820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111451402.XA Pending CN114370358A (en) | 2021-11-30 | 2021-11-30 | Hydrocarbon emission control method and control device for hybrid vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114370358A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142971A (en) * | 2022-07-26 | 2022-10-04 | 东风小康汽车有限公司重庆分公司 | Fuel control method and system of extended range type automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010270652A (en) * | 2009-05-20 | 2010-12-02 | Toyota Motor Corp | Evaporated fuel treatment device |
| CN201934213U (en) * | 2010-12-16 | 2011-08-17 | 上海汽车集团股份有限公司 | Fuel adsorbing device |
| US20150083089A1 (en) * | 2013-09-24 | 2015-03-26 | Ford Global Technologies, Llc | Fuel oxidation reduction for hybrid vehicles |
| CN206338141U (en) * | 2016-10-28 | 2017-07-18 | 长城汽车股份有限公司 | The fuel-steam control device and motor vehicle driven by mixed power of motor vehicle driven by mixed power |
| CN211202150U (en) * | 2019-10-30 | 2020-08-07 | 比亚迪股份有限公司 | Hybrid electric vehicle fuel steam emission control system and vehicle |
-
2021
- 2021-11-30 CN CN202111451402.XA patent/CN114370358A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010270652A (en) * | 2009-05-20 | 2010-12-02 | Toyota Motor Corp | Evaporated fuel treatment device |
| CN201934213U (en) * | 2010-12-16 | 2011-08-17 | 上海汽车集团股份有限公司 | Fuel adsorbing device |
| US20150083089A1 (en) * | 2013-09-24 | 2015-03-26 | Ford Global Technologies, Llc | Fuel oxidation reduction for hybrid vehicles |
| CN206338141U (en) * | 2016-10-28 | 2017-07-18 | 长城汽车股份有限公司 | The fuel-steam control device and motor vehicle driven by mixed power of motor vehicle driven by mixed power |
| CN211202150U (en) * | 2019-10-30 | 2020-08-07 | 比亚迪股份有限公司 | Hybrid electric vehicle fuel steam emission control system and vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142971A (en) * | 2022-07-26 | 2022-10-04 | 东风小康汽车有限公司重庆分公司 | Fuel control method and system of extended range type automobile |
| CN115142971B (en) * | 2022-07-26 | 2023-12-29 | 东风小康汽车有限公司重庆分公司 | Fuel control method and system for range-extended automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109458276B (en) | Vehicle-mounted oil gas recovery system of hybrid electric vehicle and control method | |
| CN103899446A (en) | Evaporated fuel processing device and method for diagnosing evaporated fuel processing device | |
| CN111692021A (en) | System and method for diagnosing dual path extraction engine system injector system degradation | |
| CN105134422A (en) | Vehicle-mounted oil filling and oil and gas recycling system and automobile with same | |
| CN114370358A (en) | Hydrocarbon emission control method and control device for hybrid vehicle | |
| DE102021132757A1 (en) | METHOD AND SYSTEM FOR DIAGNOSIS OF A FUEL SYSTEM | |
| KR20090106923A (en) | Recirculation device of vaporized fuel for vehicle | |
| CN201661358U (en) | Adjustable carbon remover | |
| CN108035826A (en) | Hybrid vehicle hydrocarbon emission control system | |
| CN109752028A (en) | Gasoline car fuel tank cap opens positive pressure detection method | |
| CN107776397B (en) | Fuel oil and gas recovery system | |
| CN102434328B (en) | Valve device of fuel tank | |
| CN105041527A (en) | Vehicle fuel feeding and evaporation system | |
| CN110617163A (en) | System and method for fuel system recirculation valve diagnostics | |
| CN211202150U (en) | Hybrid electric vehicle fuel steam emission control system and vehicle | |
| CN201198798Y (en) | Fuel evaporation control device of motorcycle | |
| CN202031729U (en) | Exhaust system of fuel tank | |
| CN201334969Y (en) | Automobile oil filter canister | |
| CN114033583B (en) | Desorption diagnostic device and oil tank leakage diagnostic system | |
| CN203362266U (en) | Oil-gas separation device | |
| CN210660353U (en) | Engine carbon tank desorption device, engine assembly and vehicle | |
| CN202360246U (en) | Valve device of fuel tank | |
| KR20220075785A (en) | Control Method for EAPU Module For Vehecle | |
| KR20220075784A (en) | Intelligent EAPU Module For Vehecle | |
| CN204877752U (en) | Vehicle fuel is supplied with and vaporization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220419 |