CN109733188B - Opening and closing safety protection control method for oil filling cover of oil tank - Google Patents
Opening and closing safety protection control method for oil filling cover of oil tank Download PDFInfo
- Publication number
- CN109733188B CN109733188B CN201811558194.1A CN201811558194A CN109733188B CN 109733188 B CN109733188 B CN 109733188B CN 201811558194 A CN201811558194 A CN 201811558194A CN 109733188 B CN109733188 B CN 109733188B
- Authority
- CN
- China
- Prior art keywords
- oil tank
- oil
- opening
- tank
- closing
- 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.)
- Active
Links
Images
Abstract
The invention discloses a safety protection control method for opening and closing an oil filling cover of an oil tank. In particular, the fuel tank filler cap opening is: and responding to an opening instruction of the oil tank filler cap, and opening the oil tank filler cap after the oil tank steam isolating valve is opened to release pressure. When the oil filling cover of the automobile oil tank is not closed and the steam isolation valve of the oil tank is not closed, the invention realizes the automatic closing of the steam isolation valve of the oil tank by judging the speed of the automobile, avoids the steam discharge of the oil tank during driving, avoids the pollution and the potential safety hazard to the environment, and can also cause the risk of hurting people by the oil steam splashing when the oil tank is directly opened under high pressure during oil filling.
Description
Technical Field
The invention belongs to a vehicle control technology, and particularly relates to a control technology for opening and closing an oil filling cover of an automobile high-pressure oil tank.
Background
Fuel oil can volatilize in the oil tank and produce fuel steam, and for hybrid vehicle, when the engine was out of work, the oil tank steam isolating valve on the fuel tank must be closed to carbon tank can not in time the desorption, leads to the carbon tank to puncture, and fuel steam discharges in the air, causes environmental pollution and brings the potential safety hazard. Under some conditions, after fuel is added, if the oil filling cover of the automobile oil tank is opened and not closed, the steam isolation valve of the oil tank is not closed, so that after the automobile is driven, the steam of the oil tank can be directly discharged into the atmosphere to cause environmental pollution and bring potential safety hazards. No document is provided to describe how to open or close the oil filling cover of the vehicle oil tank, and the oil tank steam isolating valve is not closed to solve the problem of direct emission of oil tank steam.
In addition, with the hybrid vehicle described above, there is a possibility that the fuel tank will not be opened for a long period of time or fuel vapor recovery will not be performed for a long period of time, particularly when the electric-only mode is running on a bumpy road, and when the ambient temperature is high, a large vapor pressure will be generated in the fuel tank. Like a traditional vehicle directly opened, the risk of injury to people due to oil vapor splashing can occur under high pressure. The existing solution control strategy is complex.
Disclosure of Invention
The invention aims to solve the problem of how to realize the steam discharge of an oil tank after driving when an oil filling cover of the automobile oil tank is opened and a steam isolating valve of the oil tank is opened, and further solve the problem of how to control the steam isolating valve of the oil tank before the oil filling cover of the automobile oil tank is opened.
The technical scheme of the invention is as follows: the method for controlling the opening and closing safety protection of the oil filling cover of the oil tank is characterized in that after the oil filling cover of the oil tank is opened and a travelling crane is not closed, when the speed of the travelling crane is not less than a set threshold value, a steam isolation valve of the oil tank is automatically closed.
In particular, the fuel tank filler cap opening is: and responding to an opening instruction of the oil tank filler cap, and opening the oil tank filler cap after the oil tank steam isolating valve is opened to release pressure.
Preferably, the threshold value may be set according to requirements, such as 10km/h or 15 km/h. The above-mentioned not less means greater than or equal to.
Particularly, after the automobile is driven, the oil filling cover of the oil tank is not closed, and an alarm is generated.
The further technical scheme is that the sensor does not sense a closing signal of an oil filling cover of the oil tank, when the engine controller detects that the speed of the vehicle is not less than a set threshold value, the engine controller sends an instruction for closing the steam isolation valve of the oil tank, and the steam isolation valve of the oil tank is closed.
Particularly, before the oil filling cover of the oil tank is opened, the conditions of the speed and the rotating speed are judged, and whether the steam isolating valve of the oil tank is opened or not is determined.
Preferably, after initiating a fuel tank filler cap opening signal, judging that the current vehicle speed is not greater than a set value, and when the rotating speed is equal to 0rpm, opening a fuel tank steam isolation valve to release pressure of the fuel tank. This setting ensures that the engine is turned off, but the vehicle does not necessarily require a complete stop, but of course a determination that the vehicle speed is zero is also possible; the set value can be 10km/h, 15km/h and 20km/h, and is set according to actual conditions. The above-mentioned not more means not more than.
The further technical scheme is that the pressure relief is that the pressure value in the oil tank reaches a safety value, and the safety value is the pressure value of the difference value between the pressure value in the oil tank and the atmospheric pressure value within a safety range.
Preferably, the safety range is a safety value, and the difference between the pressure value in the oil tank and the atmospheric pressure value is +/-2 kpa.
The opening control method of the oil filling cover of the oil tank comprises the following steps:
1) if the vehicle is in an OFF gear, the controller can be awakened through the level by pressing the refueling button, and then whether refueling request pressing action exists or not is judged by recognizing the level; if the vehicle is in an ON gear, pressing a refueling button, directly identifying the level of the refueling button, and judging whether a refueling request is pressed;
(2) the controller judges the speed and the rotating speed;
when the vehicle speed and the rotating speed reach set values, and a refueling request pressing action is recognized, a fuel tank steam isolating valve is opened, and gasoline steam is released;
(3) when the pressure value in the oil tank reaches a safety value, unlocking and opening an oil filling cover of the oil tank;
the vehicle is in the OFF gear, namely the engine is not started and the vehicle is not electrified. Vehicle power-up in an ON gear refers to vehicle power-up.
For example: in the following two cases,
and a, for example, locking the vehicle, then using the toilet, and using the rear key to open the door, wherein the vehicle is not powered on, and the ECM is dormant. Activation of the refuel button wakes the ECM up. Then recognizing the level and judging that the refueling request is received
b e.g. driving fast to a gas station, when the vehicle is not powered down, when the ECM is not required to wake up. Starting the refuel button, ECM directly recognizes the level, determines receipt of refuel request)
The method for controlling the closing of the oil filling cover of the oil tank comprises the following steps:
(1) when the oil tank filling cover is closed, the engine controller ECM controls the oil tank steam isolation valve to be closed;
(2) when the oil filling cover of the oil tank is not closed, the engine controller ECM monitors that the speed of the vehicle reaches a set value, and then the engine controller ECM controls the steam isolation valve of the oil tank to be closed.
The controller may be an engine controller ECM.
When the oil filling cover of the automobile oil tank is not closed and the steam isolation valve of the oil tank is not closed, the invention realizes the automatic closing of the steam isolation valve of the oil tank by judging the speed of the automobile, avoids the steam discharge of the oil tank during driving and avoids the pollution to the environment and the potential safety hazard. Particularly, when fuel is filled, before an oil filling cover of an automobile fuel tank is opened, a fuel tank steam isolation valve is opened firstly to release medium-high pressure fuel steam of the fuel tank, so that the risk that the fuel steam splashes to hurt people when the fuel tank is directly opened and the fuel tank is directly pressed at high pressure is avoided; after that, forget to close the oil filling cover of the automobile oil tank, and cause the direct emission of the oil tank steam to cause environmental pollution and potential safety hazard when the oil tank steam isolating valve is not closed and the automobile is driven directly. The high-pressure fuel tank is suitable for hybrid vehicles and vehicles with high-pressure fuel tanks and the like.
Drawings
Fig. 1 is a schematic diagram of a high-pressure oil tank structure and a control module.
Fig. 2 is a schematic diagram of a pre-fueling control flow.
Fig. 3 is a schematic control flow diagram after refueling is completed.
Detailed Description
As shown in fig. 1, the system of the invention is constituted by an engine controller ECM3 for judging the vehicle speed, the vapor pressure in the fuel tank 11 and issuing commands; the command comprises a command for opening or closing a fuel tank steam isolation valve and a command for opening an unlocking instruction of an automobile fuel tank filler cap to a body controller BCM 4; the vehicle body controller BCM4 is used for starting an automobile fuel tank filler cap unlocking signal after receiving an engine controller ECM3 instruction; the fuel filling cover plate actuator and sensor assembly 5 is used for executing unlocking actions of a fuel filling cover of an automobile fuel tank and detecting whether the fuel filling cover of the automobile fuel tank is opened or closed; the fuel tank steam isolating valve 6 is used for controlling fuel steam discharge or sealing in the high-pressure fuel tank 6; the tank pressure sensor 10 is used to detect the vapor pressure in the high-pressure tank 6. The oil filling pipe 7 is an oil tank accessory which is connected with the high-pressure oil tank 11, the oil filling cover plate actuator and the sensor assembly 5. The oil filling cover plate actuator and sensor assembly 5 comprises an oil plug cover of an oil filling pipe 7 gate, an oil tank oil filling cover jointed on the vehicle body, an electromagnetic spring locking mechanism of the oil tank oil filling cover, an oil tank oil filling cover opening and closing mechanism matched with the vehicle body, and a sensor for detecting the opening and closing state of the oil tank oil filling cover. Wherein the opening and closing mechanism is a manual structure. When the electromagnetic spring locking mechanism is not unlocked, the oil tank oil filling cover cannot be manually opened. The fuel filler cap actuator and sensor assembly 5 is of conventional construction.
The above structure is applicable to a hybrid vehicle.
In pure electric mode
The engine 1 is not operating and the engine controller ECM3 closes the tank vapor isolation valve FVV6, isolating the tank system from the canister 9 and engine, and controlling evaporative emissions in the tank.
In a mixed mode
The engine 1 is running and the engine controller ECM3 opens the tank vapour isolation Valve FVV6 and evaporative emissions from the tank are admitted to the engine manifold via the Purge Valve, as in a conventional evaporative emissions control system. Wherein 8-canister ventilation solenoid valve.
In the refueling mode
As shown in figures 2 and 3 of the drawings,
the driver triggers the fuel-in button 2 electrically connected to the engine controller ECM3 to wake up the engine controller ECM3, and the engine controller ECM3 determines the conditions such as vehicle speed and rotational speed to confirm whether the conditions are satisfied. When the condition is met, the fuel tank steam isolating valve FVV6 is opened, and the fuel steam in the fuel tank is adsorbed by the carbon canister and then is discharged into the atmosphere. After the engine controller ECM3 judges that the pressure of the oil tank pressure sensor drops to a calibrated threshold, a request for opening the oil tank cover is sent to the vehicle body controller BCM4 through the CAN, and the vehicle body controller BCM4 drives the electromagnetic spring locking mechanism of the oil tank filler cap and opens the oil tank filler cap. After the refueling is finished, the BCM4 reads a fuel tank refueling cover closing state signal of the sensor and sends the signal to the ECM3, and the ECM3 closes the fuel tank steam isolation valve FVV 6.
When the BCM4 of the vehicle body does not obtain a fuel tank filler cap closing state signal of a reading sensor, and after the vehicle runs and the engine controller ECM3 monitors that the vehicle speed reaches a set value, the engine controller ECM3 sends a command of closing the fuel tank steam isolating valve FVV6 through the CAN, and closes the fuel tank steam isolating valve FVV 6.
Specifically, the fueling mode logic is further described as: 1. if the vehicle is in a power-off state, the engine ECM is in a dormant state, the refueling button presses an action hard wire to send a high level to an ECM pin, the ECM is awakened, and the high level is identified within 100ms, then the refueling request is judged to be received and started. 2. When the ECM receives a refueling request instruction, and judges that the current vehicle speed is less than 15km/h and the rotating speed is 0rpm (the engine is shut down, namely not in an idling state), the fuel tank steam isolation valve is opened to release pressure of the fuel tank. 3. The ECM collects the pressure value in the tank via a tank pressure sensor and compares it with the atmospheric pressure value. 4. When the relative pressure difference is within a safe range of +/-2 kpa, a refueling permission request is sent to the BCM, and meanwhile, the pressure relief valve is kept open. 5. When the BCM receives an oiling permission request sent by the ECM, the oiling cover lock mechanism is unlocked, and a user can open the cover plate, unscrew the oiling plunger and execute an oiling action; 6. when the oiling action is finished, the oiling cover plate is closed, and the BCM judges that the oil tank cover has the locking action through the oil tank cover position sensor. 7. The BCM signals the ECM that the fuel tank cap is locked and the ECM closes the fuel tank vapor isolation valve; 8. after the oiling is finished, the locking state of the oil tank cover is synchronously sent to the instrument, and the instrument liquid crystal screen reminds a user whether the oiling locking cover is closed or not. If the vehicle speed is more than 5km/h and the oil tank filling cover is not closed, the instrument reminds a user to close the oil tank filling cover (by displaying on the instrument panel that an oil tank filling cover lamp is turned on or giving an alarm sound prompt); and when the vehicle speed is more than 10km/h, the cover is still not closed, and the oil tank steam isolation valve is closed. If the oil filler cover is closed, the oil tank steam isolation valve is directly closed, and the high-pressure oil tank is in a closed state, so that the oil steam is prevented from leaking to the atmosphere to pollute the environment.
The above embodiments are provided to explain the technical solutions of the present invention, and the technical solutions of the present invention are not limited to the above embodiments, and other embodiments different from the above embodiments implemented by the person skilled in the art based on the above teachings are also within the protective scope of the present invention.
Claims (7)
1. A fuel tank filler cap opening and closing safety protection control method is characterized in that after a vehicle is driven without closing the fuel tank filler cap, a fuel tank steam isolation valve is automatically closed when the vehicle speed is not less than a set threshold value;
the opening of the oil filling cover of the oil tank is as follows: responding to an opening instruction of an oil tank filler cap, and opening the oil tank filler cap after the oil tank steam isolating valve is opened to release pressure;
before the oil filling cover of the oil tank is opened, judging the conditions of the speed and the rotating speed, and determining whether to open the steam isolation valve of the oil tank; after initiating an oil filling cover opening signal of an oil tank, judging that the current vehicle speed is not greater than a set value, and opening an oil tank steam isolation valve to release pressure of the oil tank when the rotating speed is 0rpm, wherein the set value is 10km/h or 15km/h or 20 km/h.
2. The method for controlling the opening and closing of the fuel filler cap of the fuel tank as claimed in claim 1, wherein after driving, the fuel filler cap of the fuel tank is not closed, and an alarm is generated.
3. The method for controlling the opening and closing of the fuel filler cap of the fuel tank as claimed in claim 1, wherein the sensor does not sense a closing signal of the fuel filler cap of the fuel tank, and when the engine controller detects that the vehicle speed is not less than a set threshold value, the engine controller sends an instruction for closing the vapor isolating valve of the fuel tank, and the vapor isolating valve of the fuel tank is closed.
4. The method for controlling the opening and closing of the oil filling cap of the oil tank as claimed in claim 1, wherein the pressure relief is the pressure value in the oil tank reaching a safety value, and the safety value is the pressure value of the difference between the pressure value in the oil tank and the atmospheric pressure value within a safety range.
5. The method for controlling the opening and closing of the oil filling cover of the oil tank as claimed in claim 4, wherein the safety value of the safety range is the difference between the pressure value in the oil tank and the atmospheric pressure value, and is +/-2 kpa.
6. The opening and closing safety protection control method for the oil filling cover of the oil tank as claimed in claim 1, which is characterized in that the opening control method for the oil filling cover of the oil tank is as follows:
(1) if the vehicle is in an OFF gear, the controller can be awakened through the level by pressing the refueling button, and then whether refueling request pressing action exists or not is judged by recognizing the level; if the vehicle is in an ON gear, pressing a refueling button, directly identifying the level of the refueling button, and judging whether a refueling request is pressed;
(2) the controller judges the speed and the rotating speed;
when the vehicle speed and the rotating speed reach set values, and a refueling request pressing action is recognized, a fuel tank steam isolating valve is opened, and gasoline steam is released;
(3) and when the pressure value in the oil tank reaches a safety value, unlocking and opening an oil filling cover of the oil tank.
7. The opening and closing safety protection control method for the oil tank filler cap as claimed in claim 1 or 6, characterized in that the closing control method for the oil tank filler cap comprises the following steps:
(1) when the oil filling cover of the oil tank is closed, the controller controls the steam isolation valve of the oil tank to be closed;
(2) when the oil filling cover of the oil tank is not closed, the controller monitors that the speed of the vehicle is not less than a set threshold value, and the controller controls the steam isolation valve of the oil tank to be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558194.1A CN109733188B (en) | 2018-12-19 | 2018-12-19 | Opening and closing safety protection control method for oil filling cover of oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558194.1A CN109733188B (en) | 2018-12-19 | 2018-12-19 | Opening and closing safety protection control method for oil filling cover of oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109733188A CN109733188A (en) | 2019-05-10 |
| CN109733188B true CN109733188B (en) | 2020-10-02 |
Family
ID=66360680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811558194.1A Active CN109733188B (en) | 2018-12-19 | 2018-12-19 | Opening and closing safety protection control method for oil filling cover of oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109733188B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696607A (en) * | 2019-10-09 | 2020-01-17 | 上海元城汽车技术有限公司 | Vehicle fuel tank lock control method and device, controller and readable storage medium |
| CN110884447B (en) * | 2019-11-27 | 2024-03-26 | 江铃汽车股份有限公司 | Oiling control method for high-pressure oil tank of hybrid electric vehicle |
| CN111114298B (en) * | 2019-12-24 | 2021-04-13 | 重庆金康赛力斯新能源汽车设计院有限公司 | Method and system for controlling pressure relief valve switch of vehicle high-pressure oil tank and vehicle |
| CN111439113B (en) * | 2020-03-20 | 2022-05-17 | 江苏大学 | Vehicle-mounted oil gas recovery system and method for plug-in hybrid vehicle |
| CN111791692A (en) * | 2020-06-15 | 2020-10-20 | 汉腾汽车有限公司 | Oil filling and pressure relief system and method for Guohsix hybrid electric vehicle model |
| CN111999000B (en) * | 2020-08-11 | 2022-08-09 | 联合汽车电子有限公司 | Fuel tank leakage diagnosis method and device, automobile and computer readable storage medium |
| CN112498099A (en) * | 2020-12-08 | 2021-03-16 | 重庆金康赛力斯新能源汽车设计院有限公司 | Refueling control method and system |
| CN113428000A (en) * | 2021-08-12 | 2021-09-24 | 奇瑞商用车（安徽）有限公司 | Automobile fuel tank safety system and control method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110162625A1 (en) * | 2010-11-03 | 2011-07-07 | Ford Global Technologies, Llc | Method and Apparatus for Evaporative Emissions Control |
| CN107972480A (en) * | 2017-10-31 | 2018-05-01 | 江铃汽车股份有限公司 | A kind of refueling control method, system and device of pressure-oil tank |
-
2018
- 2018-12-19 CN CN201811558194.1A patent/CN109733188B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109733188A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109733188B (en) | Opening and closing safety protection control method for oil filling cover of oil tank | |
| US6712171B2 (en) | Refueling safety switch | |
| CN101470440B (en) | Vehicle remote starting system and method | |
| US10436138B2 (en) | Systems and methods for diagnosing a vehicle engine intake manifold and exhaust system | |
| CN110884447B (en) | Oiling control method for high-pressure oil tank of hybrid electric vehicle | |
| US10766757B2 (en) | Method and system for vehicle refueling | |
| US8630786B2 (en) | Low purge flow vehicle diagnostic tool | |
| US9534565B2 (en) | Evaporated-fuel processing apparatus | |
| CN104210356B (en) | The plug-in hybrid vehicle tank depressurization before fueling again | |
| CN110657049A (en) | Evaporative emission diagnostics during long-term idle conditions | |
| CN205706159U (en) | Tank assembly, fuel oil supply system and automobile | |
| US10677197B2 (en) | Evaporative emissions diagnostic during a remote start condition | |
| CN104417350A (en) | Systems and methods for a two-valve non-integrated refueling canister only system | |
| US11148930B2 (en) | Systems and methods for fuel system pressure sensor rationalization | |
| CN105531140A (en) | Method and system for depressurizing a vehicle fuel storage system | |
| CN110617134A (en) | Method and system for engine system diagnostics based on ambient noise | |
| CN111976468A (en) | Refueling control method and system for hybrid electric vehicle and vehicle | |
| US20180099859A1 (en) | Systems and methods for detection of vehicle misfueling | |
| CN109572598A (en) | Intelligent and safe automobile and its control method | |
| CN116890631A (en) | Oil tank oiling control method and system | |
| US10969294B2 (en) | Method and system for fuel system leak detection | |
| CN110966122A (en) | System and method for fuel system pressure sensor rationalization | |
| CN204200385U (en) | A kind of automobile fuel saving control system | |
| CN111791692A (en) | Oil filling and pressure relief system and method for Guohsix hybrid electric vehicle model | |
| CN108791186B (en) | Anti-theft and anti-robbery control system for automobile |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |