CN113417766A - Carbon tank with active desorption function - Google Patents
Carbon tank with active desorption function Download PDFInfo
- Publication number
- CN113417766A CN113417766A CN202110870384.2A CN202110870384A CN113417766A CN 113417766 A CN113417766 A CN 113417766A CN 202110870384 A CN202110870384 A CN 202110870384A CN 113417766 A CN113417766 A CN 113417766A
- Authority
- CN
- China
- Prior art keywords
- carbon tank
- desorption
- port
- carbon
- mouth
- 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
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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
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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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
- 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
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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
- F02M2025/0845—Electromagnetic valves
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- 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)
Abstract
The invention discloses a carbon tank with an active desorption function, which comprises a carbon tank shell, wherein an adsorption port, a desorption port and an atmosphere port are arranged on the carbon tank shell, the adsorption port is used for connecting an oil tank, the desorption port is used for connecting a carbon tank electromagnetic valve, the carbon tank electromagnetic valve is connected with an engine air inlet manifold, and the desorption port is connected with the carbon tank electromagnetic valve through a centrifugal fan. When the carbon tank provided by the invention is used, the ECU can automatically judge the state of the engine, the motor is automatically started when gasoline steam in the carbon tank is needed, the centrifugal fan runs, and the gasoline steam is actively sucked into the air inlet manifold of the engine, so that the condition that the desorption efficiency of the gasoline steam in the carbon tank is low due to insufficient vacuum is avoided.
Description
Technical Field
The invention relates to the technical field of automobile emission control, in particular to a carbon tank with an active desorption function
Background
The carbon tank is an important component in a gasoline evaporation control system (EVAP), and an adsorption port of the carbon tank in the prior art is connected with an oil tank, and a desorption port of the carbon tank is connected with a carbon tank electromagnetic valve which is directly connected to an engine intake manifold. The working principle is as follows: when the automobile runs or is flamed out, the pressure in the gas-oil cylinder gradually rises due to the volatility of the gasoline, and gasoline steam enters the carbon tank through a pipeline connected with the carbon tank and is adsorbed and stored by activated carbon in the carbon tank; after the engine is started, an electromagnetic valve of a fuel evaporation and purification device arranged between a carbon tank and an air inlet manifold is opened, and gasoline vapor stored in the carbon tank is sucked into the air inlet manifold to participate in combustion under the action of the negative pressure, so that the purposes of recycling the gasoline vapor and realizing energy conservation and emission reduction are achieved.
In recent years, the efficiency of fuel automobiles is higher and higher, the technologies of turbocharging, automatic start and stop and the like are popularized, the vacuum degree of an air inlet manifold is greatly reduced, and the gasoline steam in a carbon tank is difficult to desorb completely, so that the desorption flow is insufficient. The engine of the hybrid electric vehicle is closed for a large amount of time, and the fuel desorption capacity of the carbon tank volatilization is insufficient. In addition, the emission standard of the national six is more strict than that of the national five, and the existing EVAP can not continuously meet the increasingly strict emission standard any more.
Disclosure of Invention
In view of the above, the invention provides a carbon canister with an active desorption function, which aims at the problem that the desorption capacity of the carbon canister is insufficient due to insufficient negative pressure of an engine.
The invention adopts the specific technical scheme that:
the utility model provides a carbon tank with active desorption function, includes the carbon tank casing, be equipped with on the carbon tank casing and adsorb mouth, desorption mouth and atmosphere mouth, it is used for connecting the oil tank to adsorb the mouth, the desorption mouth is used for connecting the carbon tank solenoid valve, the carbon tank solenoid valve is connected with engine intake manifold, the desorption mouth passes through centrifugal fan and is connected with the carbon tank solenoid valve.
Furthermore, the centrifugal fan adopted by the invention is of the existing design and comprises an air suction port, an air outlet, an impeller, a motor, a shell and the like, wherein the desorption port is connected with the air suction port, and the air outlet is connected with the carbon tank electromagnetic valve.
Furthermore, the centrifugal fan is provided with a control chip, the motor is connected with the control chip, the control chip is connected with the ECU, and the ECU controls the operation of the motor.
Further, the desorption port is connected with the air suction port through a hose.
Further, be equipped with the baffle in the carbon tank casing and separate into first cavity and second cavity with the carbon tank casing, be equipped with the space between the opening plane of baffle and carbon tank casing lower part, adsorb the mouth with the desorption mouth is established at first cavity, the second cavity is established to the atmosphere mouth.
The invention has the beneficial effects that: when a common carbon tank is used, gasoline vapor in the carbon tank can be passively sucked into an engine only by means of vacuum of an engine intake manifold, and the desorption process of the carbon tank can be greatly influenced by the reduction of the vacuum degree of the engine intake manifold caused by various reasons; when the carbon tank provided by the invention is used, the ECU can automatically judge the state of the engine, the motor is automatically started when gasoline steam in the carbon tank is needed, the centrifugal fan runs, and the gasoline steam is actively sucked into the air inlet manifold of the engine, so that the condition that the desorption efficiency of the gasoline steam in the carbon tank is low due to insufficient vacuum is avoided.
Drawings
FIG. 1 is a schematic diagram of a portion of a canister of an embodiment gasoline vaporization control system arrangement;
fig. 2 is a schematic view of a centrifugal fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, this embodiment provides a carbon canister with active desorption function, including carbon canister casing 1, be equipped with the baffle in the carbon canister casing 1 and separate carbon canister casing 1 into first cavity 101 and second cavity 102, be equipped with the space between the opening plane of baffle and carbon canister casing 1 lower part, be equipped with on the first cavity 101 and adsorb mouth and desorption mouth, be equipped with the atmosphere mouth on the second cavity 102, it is used for connecting oil tank 2 to adsorb the mouth, the desorption mouth passes through centrifugal fan 5 and is connected with carbon canister solenoid valve 3, carbon canister solenoid valve 3 is connected with engine air intake manifold 4. The centrifugal fan 5 that this embodiment adopted is current design, as shown in fig. 2, and it includes cylinder tubulose induction port 6, impeller front bezel 9, impeller 8, impeller back plate 10, shell 12, cylinder tubulose gas outlet 7, motor 11, control chip 13 and the socket 14 of being connected with ECU, the desorption mouth with cylinder tubulose induction port 6 is connected, cylinder tubulose gas outlet 7 with carbon tank solenoid valve 3 is connected, the motor with control chip connects, control chip is connected with ECU (through socket 14), by ECU control motor's operation. The desorption port is connected with the cylindrical tubular air suction port 6 through a hose, so that the positions of the centrifugal fan 5 and the carbon tank can be flexibly arranged, and the installation performance is better.
When the automobile is started, the carbon tank electromagnetic valve 3 between the centrifugal fan 5 and the air inlet manifold 4 is opened, the ECU controls the motor of the centrifugal fan 5 to work, so that when the impeller 3 rotates, the mixed gas of gasoline steam and air between the blades rotates along with the impeller to obtain inertial centrifugal force, and the mixed gas of the gasoline steam and the air is thrown out from an outlet between the blades. The mixed gas of the thrown gasoline vapor and air is extruded into the casing 12, so that the pressure inside the casing 12 is increased and finally is guided to the cylindrical tubular air outlet 7 to be discharged. After the mixed gas of gasoline vapor and air is thrown out, the pressure at the center part of the impeller 3 is reduced. The mixed gas of gasoline vapor and air stored in the carbon tank can be continuously sucked from the cylindrical tubular air suction port 6 of the fan; the mixed gas of gasoline steam and air is sucked into the pump through a cylindrical tubular air suction port 1 of a centrifugal fan 5, is discharged from a cylindrical tubular air outlet 2, and enters an engine air inlet manifold 4 through an opened carbon tank electromagnetic valve 3 to participate in combustion.
According to the technical scheme, the carbon tank with the active desorption function provided by the embodiment can actively provide the pressure source required by the desorption of the carbon tank, and the carbon tank is not only required to be passively desorbed by the vacuum degree of the engine when needing to be desorbed, so that the problem of the reduction of the desorption efficiency of the carbon tank caused by the reduction of the vacuum degree of the air inlet manifold in the engine is solved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a carbon tank with active desorption function, includes the carbon tank casing, be equipped with on the carbon tank casing and adsorb mouth, desorption mouth and atmosphere mouth, it is used for connecting the oil tank to adsorb the mouth, the desorption mouth is used for connecting the carbon tank solenoid valve, the carbon tank solenoid valve is connected with engine intake manifold, its characterized in that, the desorption mouth is connected with the carbon tank solenoid valve through centrifugal fan.
2. The carbon tank with the active desorption function according to claim 1, wherein the centrifugal fan comprises an air suction port, an air outlet, an impeller, a motor and a housing, the desorption port is connected with the air suction port, and the air outlet is connected with the carbon tank solenoid valve.
3. The carbon tank with the active desorption function according to claim 2, wherein the centrifugal fan is provided with a control chip, the motor is connected with the control chip, the control chip is connected with the ECU, and the ECU controls the operation of the motor.
4. The carbon tank with the active desorption function as claimed in any one of claims 1 to 3, wherein the desorption port is connected with the air suction port through a hose.
5. The carbon tank with the active desorption function according to any one of claims 1 to 3, wherein a partition plate is arranged in the carbon tank shell to partition the carbon tank shell into a first cavity and a second cavity, a gap is arranged between the partition plate and an opening plane at the lower part of the carbon tank shell, the adsorption port and the desorption port are arranged in the first cavity, and the atmospheric port is arranged in the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870384.2A CN113417766A (en) | 2021-07-30 | 2021-07-30 | Carbon tank with active desorption function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870384.2A CN113417766A (en) | 2021-07-30 | 2021-07-30 | Carbon tank with active desorption function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113417766A true CN113417766A (en) | 2021-09-21 |
Family
ID=77718560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110870384.2A Pending CN113417766A (en) | 2021-07-30 | 2021-07-30 | Carbon tank with active desorption function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113417766A (en) |
-
2021
- 2021-07-30 CN CN202110870384.2A patent/CN113417766A/en active Pending
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