CN110671237A - Oil gas loss control method for carbon tank electromagnetic valve - Google Patents
Oil gas loss control method for carbon tank electromagnetic valve Download PDFInfo
- Publication number
- CN110671237A CN110671237A CN201910985318.2A CN201910985318A CN110671237A CN 110671237 A CN110671237 A CN 110671237A CN 201910985318 A CN201910985318 A CN 201910985318A CN 110671237 A CN110671237 A CN 110671237A
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- China
- Prior art keywords
- oil gas
- carbon tank
- carbon
- oil
- pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0809—Judging failure of purge control system
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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
- F02D41/0045—Estimating, calculating or determining the purging rate, amount, flow or concentration
Abstract
The invention discloses an oil gas loss control method of a carbon tank electromagnetic valve, which comprises the following steps of S1, arranging flow sensors on an air inlet pipe and an air outlet pipe of a carbon tank; s2, arranging a one-way valve on the carbon tank air inlet pipe; s3, arranging a pressure pump on the carbon tank, and connecting the pressure pump with the carbon tank through an air pipe; s4, allowing oil gas in the oil tank to enter the carbon tank through the air inlet pipe, and detecting the air inflow of the oil gas through the flow sensor; s5, the flow sensor transmits the detected oil gas air inflow to a calculating unit of the system, and the calculating unit calculates; s6, the calculation unit calculates the pressure needed to be provided by the pressure pump, and the control unit of the system controls the pressure pump to provide pressure; s7, discharging oil gas in the carbon tank under the action of pressure, and entering an engine combustion chamber through an air outlet pipe; and S8, detecting the gas output amount of the oil gas by a flow sensor in the gas outlet pipe, feeding the gas output amount of the oil gas back to a calculating unit of the system, and calculating the adsorption efficiency of the carbon tank.
Description
Technical Field
The invention relates to the field of automobile carbon tank calculation, in particular to an oil-gas loss control method for a carbon tank electromagnetic valve.
Background
From the perspective of saving fuel and protecting the environment, people set up the carbon tank, the carbon tank is inside to be filled by the very strong active carbon of adsorptivity, and unnecessary fuel steam in the oil tank no longer discharges to the atmosphere, but has a pipe to introduce the active carbon tank. The fuel vapor is adsorbed by the activated carbon, when the automobile starts, the electromagnetic valve of the activated carbon tank is opened timely, and the adsorbed fuel vapor is poured into the air inlet manifold again, so that the aims of saving fuel and protecting environment are fulfilled.
The oil gas that adsorbs in the carbon tank is discharged mainly through the adsorption of engine, and the suction of engine can't make oil gas suck out completely to part piles up in the carbon tank, piles up too much on the one hand and causes the influence to the follow-up use of carbon tank, and on the other hand oil gas can't make full use of, causes the loss of tie white.
Disclosure of Invention
The invention aims to provide an oil-gas loss control method of a carbon tank electromagnetic valve, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an oil-gas loss control method of a carbon tank electromagnetic valve comprises the following steps:
s1, arranging flow sensors on the air inlet pipe and the air outlet pipe of the carbon tank;
s2, arranging a one-way valve on the carbon tank air inlet pipe;
s3, arranging a pressure pump on the carbon tank, and connecting the pressure pump with the carbon tank through an air pipe;
s4, after being vaporized, oil in the oil tank enters the carbon tank through the air inlet pipe, and the air inflow of the oil gas is detected through the flow sensor;
s5, the flow sensor transmits the detected oil gas air inflow to a calculating unit of the system, and the calculating unit calculates;
s6, the calculation unit calculates the pressure needed to be provided by the pressure pump, and the control unit of the system controls the pressure pump to provide the pressure;
s7, discharging oil gas in the carbon tank under the action of pressure, and entering an engine combustion chamber through an air outlet pipe;
and S8, detecting the gas output amount of the oil gas by a flow sensor in the gas outlet pipe, feeding the gas output amount of the oil gas back to a calculating unit of the system, and calculating the adsorption efficiency of the carbon tank.
As a preferred technical solution of the present invention, in the step S1, the flow sensor is connected to the control system through a wire, and the control system is electrically connected to the canister solenoid valve.
In a preferred embodiment of the present invention, in step S2, the check valve is disposed between the flow sensor and the tank, and the check valve is disposed in a direction in which the tank flows toward the canister.
In a preferred embodiment of the present invention, in step S3, the pressure pump is connected to the control system through a wire.
As a preferable technical solution of the present invention, in the step S4, the oil gas enters the carbon canister and is adsorbed by activated carbon particles in the carbon canister.
As a preferable aspect of the present invention, in step S6, the pressure provided by the pressure pump is 3% to 5% greater than the pressure value calculated by the calculation unit.
In a preferred embodiment of the present invention, in step S7, the oil gas adsorbed by the activated carbon in the carbon tank is squeezed out by the pressure of the pressure pump and discharged through the gas outlet pipe.
As a preferable technical solution of the present invention, in step S8, the carbon canister adsorption efficiency calculation formula is: the adsorption efficiency of the carbon tank is equal to the gas outlet amount/gas inlet amount of the oil gas.
As a preferable embodiment of the present invention, in step S8, when the canister adsorption efficiency is less than 95%, an error message is sent to the control system.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an oil gas loss control method of a carbon tank electromagnetic valve, which is characterized in that a pressure pump is connected on a carbon tank, and oil gas is discharged by pressurization, so that the accumulation of the oil gas in the carbon tank, oil gas loss and influence on the service performance of the carbon tank are avoided; the whole process is automatically controlled, and the use is convenient.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The invention provides a technical scheme that: an oil-gas loss control method of a carbon tank electromagnetic valve comprises the following steps:
s1, arranging flow sensors on the air inlet pipe and the air outlet pipe of the carbon tank;
s2, arranging a one-way valve on the carbon tank air inlet pipe;
s3, arranging a pressure pump on the carbon tank, and connecting the pressure pump with the carbon tank through an air pipe;
s4, after being vaporized, oil in the oil tank enters the carbon tank through the air inlet pipe, and the air inflow of the oil gas is detected through the flow sensor;
s5, the flow sensor transmits the detected oil gas air inflow to a calculating unit of the system, and the calculating unit calculates;
s6, the calculation unit calculates the pressure needed to be provided by the pressure pump, and the control unit of the system controls the pressure pump to provide the pressure;
s7, discharging oil gas in the carbon tank under the action of pressure, and entering an engine combustion chamber through an air outlet pipe;
and S8, detecting the gas output amount of the oil gas by a flow sensor in the gas outlet pipe, feeding the gas output amount of the oil gas back to a calculating unit of the system, and calculating the adsorption efficiency of the carbon tank.
Further, in step S1, the flow sensor is connected to the control system through a wire, and the control system is electrically connected to the canister solenoid valve.
Further, in step S2, the check valve is disposed between the flow sensor and the oil tank, and the check valve is disposed in a direction in which the oil tank flows toward the canister.
Further, in step S3, the pressure pump is connected to the control system through a wire.
Further, in step S4, after the oil gas enters the carbon canister, the oil gas is adsorbed by activated carbon particles in the carbon canister.
Further, in step S6, the pressure provided by the pressure pump is 3% to 5% greater than the pressure value calculated by the calculation unit.
Further, in step S7, the oil gas adsorbed by the activated carbon in the carbon canister is squeezed out under the pressure of the pressure pump and is discharged through the gas outlet pipe.
Further, in step S8, the canister adsorption efficiency calculation formula is: the adsorption efficiency of the carbon tank is equal to the gas outlet amount/gas inlet amount of the oil gas.
Further, in step S8, when the canister adsorption efficiency is less than 95%, an error message is sent to the control system.
Specifically, the method comprises the following steps: under the engine closing state, the carbon tank electromagnetic valve is in the closing state; when oil gas enters the carbon tank through the gas inlet pipe, the oil gas passes through the flow sensor so as to detect the gas inflow of the oil gas; when the engine is in an opening state, the carbon tank electromagnetic valve is in a closing state, the calculation unit calculates the total air intake amount of the oil gas, calculates the pressure required to be provided by the pressure pump according to the corresponding relation, and then controls the pressure pump to pressurize the carbon tank, so that the oil gas is discharged under the action of the pressure and enters a combustion cavity of the engine through the air outlet pipe to be combusted; and detecting the gas output by the pressure sensor on the gas outlet pipe, and detecting the total gas output, so that the adsorption efficiency is calculated through the gas output/gas input of oil gas.
The pressure provided by the pressure pump is 3% -5% higher than the pressure value calculated by the calculation unit, and is used for eliminating the influence that the oil gas source in the air inlet pipe continuously enters the carbon tank during air exhaust, so that the air inlet pipe is kept in a relatively balanced state; the check valve sets up between flow sensor and oil tank, and the check valve sets up the direction and is oil tank flow direction carbon tank, guarantees the oil gas flow direction, when exhausting, avoids oil gas backward flow to the oil tank in, detects to flow sensor and causes the influence. In step S8, when the adsorption efficiency of the carbon tank is less than 95%, error information is sent to the control system; when the adsorption efficiency of the carbon tank is less than 95%, a large deviation exists between the air inflow and the air outflow, and the air inflow and the air outflow are fed back to a user in time, so that the carbon tank is overhauled and recovered to be used as soon as possible.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A method for controlling oil gas loss of a carbon tank electromagnetic valve is characterized by comprising the following steps:
s1, arranging flow sensors on the air inlet pipe and the air outlet pipe of the carbon tank;
s2, arranging a one-way valve on the carbon tank air inlet pipe;
s3, arranging a pressure pump on the carbon tank, and connecting the pressure pump with the carbon tank through an air pipe;
s4, after being vaporized, oil in the oil tank enters the carbon tank through the air inlet pipe, and the air inflow of the oil gas is detected through the flow sensor;
s5, the flow sensor transmits the detected oil gas air inflow to a calculating unit of the system, and the calculating unit calculates;
s6, the calculation unit calculates the pressure needed to be provided by the pressure pump, and the control unit of the system controls the pressure pump to provide the pressure;
s7, discharging oil gas in the carbon tank under the action of pressure, and entering an engine combustion chamber through an air outlet pipe;
and S8, detecting the gas output amount of the oil gas by a flow sensor in the gas outlet pipe, feeding the gas output amount of the oil gas back to a calculating unit of the system, and calculating the adsorption efficiency of the carbon tank.
2. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in the step S1, the flow sensor is connected to the control system through a wire, and the control system is electrically connected to the canister solenoid valve.
3. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S2, the check valve is disposed between the flow sensor and the oil tank, and the check valve is disposed in a direction in which the oil tank flows toward the canister.
4. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S3, the pressure pump is connected to the control system through a lead.
5. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S4, the oil gas is adsorbed by activated carbon particles in the carbon canister after entering the carbon canister.
6. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S6, the pressure provided by the pressure pump is 3% to 5% greater than the pressure value calculated by the calculation unit.
7. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S7, the oil gas adsorbed by the activated carbon in the carbon canister is squeezed out under the pressure of the pressure pump and is discharged through the gas outlet pipe.
8. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S8, the carbon canister adsorption efficiency calculation formula is: the adsorption efficiency of the carbon tank is equal to the gas outlet amount/gas inlet amount of the oil gas.
9. The method for controlling the oil gas loss of the carbon tank electromagnetic valve according to claim 1, wherein the method comprises the following steps: in step S8, when the canister adsorption efficiency is less than 95%, an error message is sent to the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985318.2A CN110671237B (en) | 2019-10-16 | 2019-10-16 | Oil gas loss control method for carbon tank electromagnetic valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910985318.2A CN110671237B (en) | 2019-10-16 | 2019-10-16 | Oil gas loss control method for carbon tank electromagnetic valve |
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| CN110671237A true CN110671237A (en) | 2020-01-10 |
| CN110671237B CN110671237B (en) | 2020-08-07 |
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Citations (6)
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| EP1643115A1 (en) * | 2003-06-30 | 2006-04-05 | Hitachi, Ltd. | Device and method for diagnosing evaporation leak, and control device of internal combustion engine |
| CN102116726A (en) * | 2009-12-30 | 2011-07-06 | 新大洲本田摩托有限公司 | Activated carbon tank quick aging detection device and detection method thereof |
| CN202707294U (en) * | 2012-07-06 | 2013-01-30 | 江苏大学 | Vehicle recovery device for gasoline vapor |
| CN107152354A (en) * | 2017-06-09 | 2017-09-12 | 吉利汽车研究院（宁波）有限公司 | A kind of vehicle fuel vapo(u)rization system leak diagnostic apparatus and its diagnostic method |
| CN206668430U (en) * | 2017-03-23 | 2017-11-24 | 上海工程技术大学 | A kind of vehicle-mounted oil vapor recovery device |
| US20180187614A1 (en) * | 2017-01-04 | 2018-07-05 | Ford Global Technologies, Llc | Evaporative emissions system check valve monitor for a multi-path purge ejector system |
-
2019
- 2019-10-16 CN CN201910985318.2A patent/CN110671237B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1643115A1 (en) * | 2003-06-30 | 2006-04-05 | Hitachi, Ltd. | Device and method for diagnosing evaporation leak, and control device of internal combustion engine |
| CN102116726A (en) * | 2009-12-30 | 2011-07-06 | 新大洲本田摩托有限公司 | Activated carbon tank quick aging detection device and detection method thereof |
| CN202707294U (en) * | 2012-07-06 | 2013-01-30 | 江苏大学 | Vehicle recovery device for gasoline vapor |
| US20180187614A1 (en) * | 2017-01-04 | 2018-07-05 | Ford Global Technologies, Llc | Evaporative emissions system check valve monitor for a multi-path purge ejector system |
| CN206668430U (en) * | 2017-03-23 | 2017-11-24 | 上海工程技术大学 | A kind of vehicle-mounted oil vapor recovery device |
| CN107152354A (en) * | 2017-06-09 | 2017-09-12 | 吉利汽车研究院（宁波）有限公司 | A kind of vehicle fuel vapo(u)rization system leak diagnostic apparatus and its diagnostic method |
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Effective date of registration: 20231012 Address after: No. 29, Zihuan Road, She County Economic Development Zone, Mount Huangshan City, Anhui Province 245000 Patentee after: Mount Huangshan Heshun Technology Co.,Ltd. Address before: 245000 No. 150, Yongjia Avenue, Huizhou District, Huangshan City, Anhui Province Patentee before: Huangshan city Huizhou Heshun Industrial Co.,Ltd. |
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