CN211202150U - Hybrid electric vehicle fuel steam emission control system and vehicle - Google Patents
Hybrid electric vehicle fuel steam emission control system and vehicle Download PDFInfo
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- CN211202150U CN211202150U CN201921851518.0U CN201921851518U CN211202150U CN 211202150 U CN211202150 U CN 211202150U CN 201921851518 U CN201921851518 U CN 201921851518U CN 211202150 U CN211202150 U CN 211202150U
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Abstract
The utility model relates to a hybrid vehicle fuel steam discharges control system and vehicle, this control system is including setting up the first detection module in the charcoal jar, set up the second detection module in the oil tank, set up the first control valve on the first pipeline of the air intake manifold of connecting charcoal jar and engine, and with first detection module, the treater that second detection module and first control valve electricity are connected, be connected with the second pipeline that is linked together with the atmosphere on the charcoal jar and the third pipeline that is linked together with the oil tank, be provided with the second control valve on the second pipeline, second control valve and treater electricity are connected. Add the second control valve on the second pipeline, can prevent the hydrocarbon in the canister to discharge to the atmosphere, detect when first detection module that the adsorbed hydrocarbon of canister reaches the saturated condition, open first control valve and second control valve, the engine starts, and under the effect of intake manifold vacuum suction, the air admission accomplishes the desorption in sending into the engine with the adsorbed hydrocarbon of canister.
Description
Technical Field
The disclosure relates to the field of hybrid electric vehicles, in particular to a fuel vapor emission control system of a hybrid electric vehicle and a vehicle.
Background
In the existing fuel vapor emission control system of the hybrid electric vehicle, an isolation valve assembly is arranged between a carbon tank and an oil tank, when an engine is detected not to be in a working state, hydrocarbon emission between the oil tank and the carbon tank can be cut off, oil vapor in the oil tank is controlled in the oil tank, adsorption saturation of the carbon tank caused by the fact that the engine is not started in a pure electric mode for a long time is prevented, and further the oil vapor is prevented from being discharged into the atmosphere to cause pollution. However, the isolation valve assembly is disposed between the oil tank and the canister, which cannot control the hydrocarbon emission of the canister, and cannot meet the requirements of emission regulations under the condition that the engine provides zero desorption amount, and the carbon rod is usually added to the canister to adsorb oil vapor, so that the corresponding cost is also increased.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a fuel vapor emission control system of a hybrid electric vehicle, which can effectively control the hydrocarbon emission of a carbon canister, particularly under the condition that an engine provides zero desorption amount.
The second purpose of the present disclosure is to provide a vehicle, which comprises the fuel vapor emission control system of the hybrid electric vehicle provided by the present disclosure.
In order to achieve the purpose, the present disclosure provides a fuel vapor emission control system for a hybrid vehicle, including a first detection module disposed in a canister, a second detection module disposed in an oil tank, a first control valve disposed on a first pipeline connecting the canister and an intake manifold of an engine, and a processor electrically connected to the first detection module, the second detection module and the first control valve, the canister is connected to a second pipeline communicated with the atmosphere and a third pipeline communicated with the oil tank, the second pipeline is provided with a second control valve, and the second control valve is electrically connected to the processor.
Optionally, the first detection module comprises a weight sensor.
Optionally, the second detection module comprises a pressure sensor.
Optionally, the first control valve is a solenoid valve.
Optionally, the second control valve is a solenoid valve.
Optionally, a third control valve is arranged on the third pipeline, and the third control valve is a normally open solenoid valve.
According to the second aspect of the disclosure, a vehicle is also provided, and the vehicle comprises the fuel vapor emission control system of the hybrid electric vehicle.
Optionally, the vehicle includes a refueling control device, the refueling control device being electrically connected to the second control valve.
Optionally, the processor is electrically connected to a display screen of the vehicle.
Optionally, a fault warning lamp is arranged on the display screen, and the first control valve and the second control valve are respectively electrically connected with the fault warning lamp.
Through above-mentioned technical scheme, the canister can adsorb the oil vapor in the oil tank, prevents that the oil vapor in the oil tank from discharging into the atmosphere, adds the second control valve on the second pipeline, can prevent that the hydrocarbon in the canister discharges to the atmosphere in. When the first detection module detects that the hydrocarbon adsorbed by the carbon canister reaches a saturated state, the first control valve and the second control valve are opened, the engine is started, fresh air enters from the second pipeline under the action of vacuum suction of the air inlet manifold, the hydrocarbon adsorbed by the carbon canister is sent into the engine, desorption operation is completed, the reduction of the working capacity of the carbon canister due to long-time adsorption of the carbon canister is avoided, the requirement of emission regulations is met, and meanwhile the cost of a fuel steam emission control system is reduced.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic structural diagram of a fuel vapor emission control system of a hybrid vehicle according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an electrical connection of a fuel vapor emission control system of a hybrid vehicle according to an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic diagram of an electrical connection of a fuel vapor emission control system of a hybrid vehicle according to another exemplary embodiment of the present disclosure;
FIG. 4 is a connection block diagram of a fuel vapor emission control system of a hybrid vehicle according to an exemplary embodiment of the present disclosure;
FIG. 5 is a flowchart illustrating a control method of a fuel vapor emission control system of a hybrid vehicle according to an exemplary embodiment of the present disclosure.
Description of the reference numerals
1 carbon canister and 2 oil tanks
11 first detection module 21 second detection module
3 first pipe of intake manifold 41
42 second line 43 third line
51 first control valve 52 second control valve
6 processor 7 display screen
8 oiling control device 53 third control valve
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of directional terms such as "inner" and "outer" in the absence of a contrary intention, refers to the inclusion of inner and outer elements within the profile of the corresponding component, and the use of the terms "first", "second", and the like in the present disclosure is intended to distinguish one element from another without order or importance. In addition, when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.
As shown in fig. 1 and 2, the present disclosure provides a fuel vapor emission control system for a hybrid vehicle, the control system including a first detection module 11 disposed in a canister 1, a second detection module 21 disposed in a fuel tank 2, a first control valve 51 disposed on a first pipeline 41 connecting the canister 1 and an intake manifold 3 of an engine, and a processor 6 electrically connected to the first detection module 11, the second detection module 21, and the first control valve 51, the canister 1 being connected to a second pipeline 42 communicating with the atmosphere and a third pipeline 43 communicating with the fuel tank 2, the second pipeline 42 being provided with a second control valve 52, the second control valve 52 being electrically connected to the processor 6. Here, it should be noted that the first detection module 11 is configured to obtain information to determine whether the adsorption of the canister 1 on the hydrocarbons reaches a saturation state, the second detection module 21 includes a pressure sensor configured to monitor a pressure value in the oil tank 2 in real time, and the first control valve 51 and the second control valve 52 may be electromagnetic valves respectively configured to control on and off of corresponding pipelines.
Through the technical scheme, the carbon canister 1 can adsorb oil vapor in the oil tank 2 and prevent the oil vapor in the oil tank 2 from being discharged into the atmosphere, and the second control valve 52 is additionally arranged on the second pipeline 42 and can prevent hydrocarbon in the carbon canister 1 from being discharged into the atmosphere. When the first detection module 11 detects that the hydrocarbon adsorbed by the carbon canister 1 reaches a saturated state, the first control valve 51 and the second control valve 52 are opened, the engine is started, under the action of vacuum suction of the intake manifold 3, fresh air enters from the second pipeline 42, the hydrocarbon adsorbed by the carbon canister 1 is sent into the engine, desorption operation is completed, the reduction of the working capacity of the carbon canister 1 caused by long-time adsorption of the carbon canister 1 is avoided, the requirement of emission regulations is met, and meanwhile the cost of a fuel steam emission control system is reduced.
In this disclosure, first detection module 11 includes weight sensor, measures the change of carbon canister 1 weight through weight sensor, judges whether the absorption of carbon canister 1 reaches saturation, compares with prior art's hydrocarbon sensor, and data are more accurate effective. Specifically, when the weight sensor detects that the weight of the canister 1 is increased by the weight M, the processor 6 receives the signal from the weight sensor and controls the first control valve 51 and the second control valve 52 to open for performing the desorption operation on the canister 1.
In the present disclosure, as shown in fig. 3, a third control valve 53 may be disposed on the third pipeline 43, and the third control valve 53 may be a normally open solenoid valve, which isolates the oil tank 2 from the canister 1, and can control oil vapor in the oil tank 2, so as to effectively control the emission of hydrocarbon and prevent environmental pollution.
The fuel steam emission control system of the hybrid electric vehicle further comprises a carbon rod arranged in the carbon canister 1, the adsorption quantity of the carbon canister 1 to hydrocarbons can be increased, the condition of low desorption quantity or zero desorption quantity of an engine of the hybrid electric vehicle is met, and the requirement of emission regulations is met.
According to a second aspect of the present disclosure, there is also provided a vehicle including the above-described hybrid vehicle fuel vapor emission control system. The vehicle has all the advantages of the fuel vapor emission control system, and redundant description is not provided herein.
In the present disclosure, as shown in fig. 4, the processor 6 is electrically connected to the display 7 of the vehicle, and when the weight sensor detects that the weight of the canister 1 is increased by a corresponding amount M, the processor 6 receives the signal and controls the first control valve 51 and the second control valve 52 to open to desorb the canister 1, and at the same time, the display 7 indicates that the vehicle owner is starting the engine to desorb the canister 1.
Specifically, as shown in fig. 5, when the pressure sensor detects that the fuel tank 2 is in a negative pressure state (the fuel tank pressure is less than the minimum value), and the gravity sensor detects that the adsorption of the canister 1 does not reach the saturation state, the engine is not started, the processor 6 controls the first control valve 51 to be closed, and the second control valve 52 to be opened; when the weight sensor detects that the adsorption of the canister 1 reaches a saturated state, the engine is not started, the first control valve 51 is controlled to be closed, the second control valve 52 is controlled to be opened, and in the process, the oil tank 2 serves as a negative pressure source, air is sucked through the air vent of the second pipeline 42, desorption operation is performed on the canister 1, and meanwhile, the requirement for negative pressure resistance of the oil tank 2 is lowered.
When a pressure sensor in the oil tank 2 detects that the oil tank 2 is in a positive pressure state (the oil tank pressure is between a maximum value and a minimum value), and a weight sensor detects that the adsorption of the carbon canister 1 does not reach a saturation state, oil vapor in the oil tank 2 continuously enters the carbon canister 1 for adsorption operation, at the moment, the engine is not started, and the first control valve 51 and the second control valve 52 are both in a closed state to reduce the hydrocarbon discharge amount of the carbon canister 1; when the weight sensor detects that the adsorption of the canister 1 reaches a saturation state, the processor 6 controls the first control valve 51 to be opened, the second control valve 52 to be opened, and the engine is forcibly opened to perform desorption operation.
When the pressure sensor detects that the pressure of the oil tank 2 is greater than the maximum value and the gravity sensor detects that the adsorption of the carbon canister 1 does not reach a saturation state, the engine is not started, the first control valve 51 is closed, and the second control valve 52 is opened to release pressure, so that the problems of deformation, cracking and the like of the oil tank caused by overlarge pressure in the oil tank 2 are avoided; when the gravity sensor detects that the adsorption of the canister 1 reaches a saturation state, the first control valve 51 and the second control valve 52 are controlled to be opened, and the engine is forcibly started, in the process, the action of discharging air from the oil tank 2 through the second control valve 52 and the action of sucking air in the canister 1 for desorption operation are simultaneously performed. Here, the weight M, the maximum value of the tank pressure, and the minimum value of the tank pressure are stored in the processor 6, and can be appropriately designed and adjusted according to different vehicle models and different emission requirements.
Be provided with the malfunction alerting lamp on the display screen 7, first control valve 51 and second control valve 52 are connected with the malfunction alerting lamp electricity respectively, detect the tank pressure when 2 pressure sensor in oil tank and exceed the designing requirement, and when first control valve 51 and second control valve 52 did not open according to above-mentioned requirement, the malfunction alerting lamp was lighted, and suggestion car owner's fuel steam control system ventilation performance breaks down.
The vehicle that this disclosure provided still includes refuels controlling means 8, refuels controlling means 8 and second control valve 52 electricity and connects, refuel controlling means 8 can be for being used for the control to refuel button, a switch, a handle etc, processor 6 and refuel controlling means 8 electricity are connected, when operation refuel controlling means 8, second control valve 52 opens, pressure sensor detects whether the pressure in the oil tank 2 satisfies the demand of refueling (whether pressure is too big), when unsatisfied when refueling the demand, in showing the oil tank pressure release on display screen 7, when pressure release to satisfying when refueling the demand, show on display screen 7 and being refuel.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. The utility model provides a hybrid vehicle fuel vapor emission control system, includes first detection module (11) that sets up in charcoal jar (1), sets up second detection module (21) in oil tank (2), sets up in and connects first control valve (51) on charcoal jar (1) and the first pipeline (41) of intake manifold (3) of engine, and with first detection module (11), second detection module (21) with processor (6) that first control valve (51) electricity is connected, its characterized in that, be connected with on charcoal jar (1) with second pipeline (42) that atmosphere is linked together and with third pipeline (43) that oil tank (2) are linked together, be provided with second control valve (52) on second pipeline (42), second control valve (52) with processor (6) electricity is connected.
2. The hybrid vehicle fuel vapor emission control system according to claim 1, characterized in that the first detection module (11) includes a weight sensor.
3. The hybrid vehicle fuel vapor emission control system according to claim 1, characterized in that the second detection module (21) includes a pressure sensor.
4. The hybrid vehicle fuel vapor emission control system according to claim 1, characterized in that the first control valve (51) is a solenoid valve.
5. The hybrid vehicle fuel vapor emission control system according to claim 1, characterized in that the second control valve (52) is a solenoid valve.
6. The hybrid vehicle fuel vapor emission control system according to claim 1, characterized in that a third control valve (53) is provided on the third line (43), and the third control valve (53) is a normally open solenoid valve.
7. A vehicle characterized by comprising the hybrid vehicle fuel vapor emission control system according to any one of claims 1 to 6.
8. Vehicle according to claim 7, characterized in that it comprises a refuelling control device (8), said refuelling control device (8) and said second control valve (52) being electrically connected.
9. Vehicle according to claim 7, characterized in that the processor (6) is electrically connected to a display screen (7) of the vehicle.
10. The vehicle according to claim 9, characterized in that a malfunction warning lamp is provided on the display screen (7), and the first control valve (51) and the second control valve (52) are electrically connected to the malfunction warning lamps, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921851518.0U CN211202150U (en) | 2019-10-30 | 2019-10-30 | Hybrid electric vehicle fuel steam emission control system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921851518.0U CN211202150U (en) | 2019-10-30 | 2019-10-30 | Hybrid electric vehicle fuel steam emission control system and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109661A (en) * | 2020-08-27 | 2022-03-01 | 比亚迪股份有限公司 | Carbon tank desorption control method and device, storage medium, electronic equipment and vehicle |
| CN114370358A (en) * | 2021-11-30 | 2022-04-19 | 江铃汽车股份有限公司 | Hydrocarbon emission control method and control device for hybrid vehicle |
-
2019
- 2019-10-30 CN CN201921851518.0U patent/CN211202150U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109661A (en) * | 2020-08-27 | 2022-03-01 | 比亚迪股份有限公司 | Carbon tank desorption control method and device, storage medium, electronic equipment and vehicle |
| CN114370358A (en) * | 2021-11-30 | 2022-04-19 | 江铃汽车股份有限公司 | Hydrocarbon emission control method and control device for hybrid vehicle |
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