Pump and valve integrated carbon tank pump

Abstract

The utility model provides a pump-valve integrated carbon tank pump, which comprises a shell, a carbon tank pump, a CVS valve and a basic electromagnetic valve are arranged in the shell, the carbon tank pump, the CVS valve and the basic electromagnetic valve are sequentially arranged from top to bottom, the carbon tank pump is communicated with the CVS valve, a carbon tank ACC is arranged on the outer side of the shell, and the carbon tank pump, the carbon tank ACC and the basic electromagnetic valve are sequentially communicated. An air inlet pipeline Y is arranged at the position, corresponding to an air inlet of the CVS valve, of the outer side of the shell, and the air inlet pipeline Y communicates with the air inlet of the CVS valve; an air outlet pipeline A is arranged at the position, corresponding to an air outlet of the basic electromagnetic valve, of the outer side of the shell, and the air outlet pipeline A communicates with the air outlet of the basic electromagnetic valve; the air outlet pipeline A is communicated with the box body, a pressure sensor, a liquid level sensor and a liquid level valve are arranged in the box body, and the liquid level control device has the advantages that the pipeline cost and the wire harness cost are reduced, the number of control loops is small, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon canister pumps, in particular to a carbon canister pump with integrated pump and valve. Background Art

[0002] At present, the carbon canister pumps on the market exist separately. The carbon canister pump is located beside the engine and is greatly affected by high temperature. The CVS valve is beside the fuel tank and the carbon canister, and the basic solenoid valve is beside the fuel tank and the carbon canister. The three are not together, there are many connecting pipelines in the middle, the leakage risk is high, and the pipeline cost is high.

[0003] The carbon canister pump is not beside the carbon canister, and the pipeline is long, which affects the efficiency.

[0004] Due to the long distances among the three devices of the CVS valve, the basic solenoid valve, and the carbon canister pump, the lengths of the wire harnesses are different, making control difficult and increasing the control cost and wire harness cost.

[0005] Chinese Patent CN213838792U discloses an integrated carbon canister, including a carbon canister body. An installation part is provided on the carbon canister body, and an installation member integrating a CVS valve and an ash filter is provided on the installation part. The installation member includes an integrated housing, an ash filter, and a CVS valve are arranged in the integrated housing. The integrated housing includes a first ventilation pipe, a second ventilation pipe, and a communication pipe. The ash filter and the CVS valve are connected by the communication pipe, so that an air passage is formed among the first ventilation pipe, the ash filter, the communication pipe, the CVS valve, and the second ventilation pipe. The second ventilation pipe is connected to the installation part and thus communicates with the inside of the carbon canister body. The carbon canister has an integrated structure, which is convenient for the overall storage and transportation of the carbon canister, and is easy to install and operate.

[0006] Chinese Patent CN213838790U discloses a carbon canister with an integrated structure, including a carbon canister body, an upper cover, a CVS valve, and an ash filter. An installation groove is provided on the carbon canister body, the CVS valve is installed in the installation groove, and the upper cover is buckled on the carbon canister body and closes the installation groove. An installation part is provided on the upper cover, and the ash filter is installed on the installation part and communicates with the installation groove. It adopts a structure in which the carbon canister body and the CVS valve are integrally installed, and at the same time, the ash filter is installed on the carbon canister body to form an integrated structure.

[0007] The above two patents only integrate the carbon canister and the ash filter, and do not involve the structural settings and connection methods of the carbon canister pump.

[0008] Chinese Patent CN216741780U discloses a carbon canister housing integrated with an air filter bracket and a leak diagnosis pump bracket, including a carbon canister housing, on which an air filter bracket and a leak diagnosis pump bracket are integrated. The air filter bracket, the leak diagnosis pump bracket and the carbon canister housing are of an integrally injection-molded structure. To save costs, reduce the layout space and the complexity of the design, in this embodiment, an optimized design of integrating the air filter bracket and the leak diagnosis pump bracket is carried out. The air filter bracket and the leak diagnosis pump bracket are simultaneously integrated on the carbon canister housing, and an integrally injection-molded design structure is adopted. The carbon canister housing can be directly fixed on the vehicle body, reducing the complexity of the system design, saving space and reducing costs at the same time.

[0009] By integrally injection-molding the air filter bracket, the leak diagnosis pump bracket and the carbon canister housing, the layout space is reduced, the nylon tube and the pipe joint between the leak diagnosis pump and the carbon canister housing are omitted, which plays a role in cost reduction. The integrated carbon canister housing is directly fixed on the vehicle body, reducing the complexity of the design.

[0010] The above only integrates the carbon canister and the leak diagnosis pump, and does not involve the CVS valve and the basic solenoid valve. Summary of the Utility Model

[0011] The technical problem to be solved by the present utility model is that the existing carbon canister pump is beside the engine and is greatly affected by high temperature, while the CVS valve is beside the fuel tank and the carbon canister and the basic solenoid valve is beside the fuel tank and the carbon canister. The three are not together, there are many connecting pipelines in the middle, the leakage risk is high, the pipeline cost is high and the efficiency is affected. In addition, the three devices of the CVS valve, the basic solenoid valve and the carbon canister pump are far away from each other, the lengths of the wire harnesses are different, the control is not easy, and the control cost and the wire harness cost are increased.

[0012] To solve the above technical problems, a carbon canister pump with integrated pump and valve provided by the present utility model includes a housing. A carbon canister pump, a CVS valve and a basic solenoid valve are arranged in the housing. The carbon canister pump, the CVS valve and the basic solenoid valve are arranged in sequence from top to bottom. The carbon canister pump is communicated with the CVS valve. A carbon canister ACC is arranged on the outer side of the housing. The carbon canister pump, the carbon canister ACC and the basic solenoid valve are communicated in sequence. An intake pipeline Y is arranged at a position corresponding to the intake port of the CVS valve on the outer side of the housing, and the intake pipeline Y is communicated with the intake port of the CVS valve. An outlet pipeline A is arranged at a position corresponding to the exhaust port of the basic solenoid valve on the outer side of the housing, and the outlet pipeline A is communicated with the exhaust port of the basic solenoid valve. The outlet pipeline A is communicated with a box body, and a pressure sensor, a liquid level sensor and a liquid level valve are arranged in the box body.

[0013] Preferably, in an embodiment of the present application, a gray filter is arranged on the carbon canister ACC.

[0014] Preferably, in an embodiment of the present application, the canister pump, the CVS valve, the basic solenoid valve, the pressure sensor, the liquid level sensor, and the liquid level valve are all electrically connected to the controller.

[0015] Preferably, in an embodiment of the present application, the pressure sensor is installed at the top inside the box.

[0016] Preferably, in an embodiment of the present application, the liquid level sensor is installed at the bottom inside the box.

[0017] Preferably, in an embodiment of the present application, the liquid level valve is installed at the top inside the box and communicates with the basic solenoid valve.

[0018] Advantages of the present utility model:

[0019] 1. The pipeline cost and the wiring harness cost are reduced. Since they are integrated together and the controller is also integrated, there are fewer control loops and higher efficiency.

[0020] 2. The integrated device can efficiently adsorb and release fuel vapor, improving the working efficiency of the system.

[0021] 3. Through the integrated control system, precise control of each component is achieved, improving the reliability of the system.

[0022] 4. The integrated device is designed compactly, occupies a small space, and is convenient for installation and maintenance. Description of the drawings

[0023] Figure 1 is a schematic diagram of a canister pump with integrated pump and valve;

[0024] Figure 2 is a current pipeline connection diagram of a canister pump with integrated pump and valve;

[0025] Figure 3 is a working mode diagram of a canister pump with integrated pump and valve;

[0026] As shown in the figure:

[0027] 1. Liquid level valve; 2. Pressure sensor; 3. Basic solenoid valve; 4. Canister ACC; 5. Ash filter; 6. CVS valve; 7. Canister pump; 8. Engine. Specific embodiments

[0028] The following further describes the specific embodiments of the present utility model with reference to the drawings. The same components are denoted by the same reference numerals.

[0029] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0030] To make the content of the present utility model easier to be clearly understood, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model.

[0031] Combined with the attached Figures 1-3 As shown, a carbon canister pump integrated with a pump valve includes a housing. A carbon canister pump 7, a CVS valve 6, and a basic solenoid valve 3 are provided in the housing. The carbon canister pump 7, the CVS valve 6, and the basic solenoid valve 3 are arranged in sequence from top to bottom. The carbon canister pump 7 is communicated with the CVS valve 6. A carbon canister ACC4 is provided outside the housing. The carbon canister pump 7, the carbon canister ACC4, and the basic solenoid valve 3 are communicated in sequence;

[0032] The carbon canister pump 7 is used to extract fuel vapor from the fuel system and send it into the carbon canister for adsorption to reduce the emission of fuel vapor;

[0033] The carbon canister pump 7 can efficiently adsorb fuel vapor into the carbon canister and reduce environmental pollution. Since fuel vapor is corrosive, the carbon canister pump 7 needs to have good corrosion resistance. Corrosion-resistant materials such as stainless steel or polymer materials are selected to enable the pump to work stably for a long time;

[0034] The CVS valve 6 is used to control the passage between the carbon canister and the atmosphere and adjust the pressure in the carbon canister to enable the normal adsorption and release of fuel vapor;

[0035] The CVS valve 6 can accurately control the pressure in the carbon canister to enable the stable operation of the system;

[0036] The CVS valve 6 has a fast response ability and can timely adjust the pressure change in the carbon canister;

[0037] Among them, materials such as special alloys or polymer materials with high temperature resistance and corrosion resistance are selected; high-precision processing technology is adopted to ensure the sealing performance and response speed of the valve; high-quality electromagnetic coils are used to enable the valve to respond quickly and operate stably;

[0038] The pressure in the carbon canister is stable, improving the reliability of the system; fast response enables the normal adsorption and release of fuel vapor; regularly check the working state of the electromagnetic coil to prevent failures; regularly check the sealing performance of the valve to prevent leaks;

[0039] The basic solenoid valve 3 is used to control the flow path of fuel vapor to enable the fuel vapor to smoothly enter the carbon canister for adsorption;

[0040] The basic solenoid valve 3 needs to have high reliability to enable the normal flow of fuel vapor; since the temperature of fuel vapor is relatively high, the solenoid valve needs to have good high-temperature resistance;

[0041] Among them, materials that are heat-resistant and corrosion-resistant are selected, such as stainless steel or polymer materials; high-precision processing technology is adopted to ensure the sealing performance and response speed of the valve; high-quality electromagnetic coils are used to enable the valve to respond quickly and operate stably;

[0042] Enable the normal flow of fuel vapor and improve the reliability of the system; respond quickly to enable the normal adsorption and release of fuel vapor;

[0043] During use, regularly check the working status of the electromagnetic coil to prevent failures; regularly check the sealing performance of the valve to prevent leakage;

[0044] Integrate the carbon canister pump 7, CVS valve 6, and basic solenoid valve 3 in one device for control to achieve efficient adsorption and release of fuel vapor;

[0045] At a position corresponding to the air inlet of the CVS valve 6 on the outer side of the housing, an air inlet pipe Y is provided, and the air inlet pipe Y is communicated with the air inlet of the CVS valve 6; at a position corresponding to the exhaust port of the basic solenoid valve 3 on the outer side of the housing, an exhaust pipe A is provided, and the exhaust pipe A is communicated with the exhaust port of the basic solenoid valve 3;

[0046] Through reasonable pipeline design, the integrated device can improve the working efficiency and convenience of the system;

[0047] Specifically, in an embodiment of the present application, the exhaust pipe A is communicated with the box body; a pressure sensor 2, a liquid level sensor, and a liquid level valve 1 are provided in the box body.

[0048] Specifically, in an embodiment of the present application, a gray filter 5 is provided on the carbon canister ACC4;

[0049] The gray filter 5 is used to filter impurities and particles in the fuel vapor, make the fuel vapor entering the carbon canister pure, and avoid damage to the carbon canister and other components;

[0050] The gray filter 5 can efficiently filter impurities and particles in the fuel vapor and protect other components of the system; due to the corrosiveness of the fuel vapor, the gray filter 5 needs to have good corrosion resistance;

[0051] Therefore, corrosion-resistant filter materials are selected, such as stainless steel mesh or polymer materials; precision processing technology is adopted to make the pore diameter of the filter uniform and improve the filtration efficiency; advanced encapsulation technology is adopted to ensure the sealing performance and durability of the filter.

[0052] Specifically, in an embodiment of the present application, the carbon canister pump 7, CVS valve 6, basic solenoid valve 3, pressure sensor 2, liquid level sensor, and liquid level valve 1 are all electrically connected to the controller;

[0053] The pressure sensor 2 is installed at the top inside the box body;

[0054] The pressure sensor 2 is used to monitor the pressure inside the carbon canister, enabling the system to operate within a safe range and providing real-time data for controlling the system adjustment;

[0055] The pressure sensor 2 needs to have high precision, be able to accurately measure the pressure change inside the carbon canister; select high-temperature and corrosion-resistant materials, such as special alloys or polymer materials; adopt high-precision processing technology to ensure the measurement accuracy and response speed of the sensor;

[0056] Integrate the pressure sensor 2 with an integrated circuit to achieve real-time data acquisition and transmission;

[0057] The pressure sensor 2 has the following advantages in this utility model:

[0058] Safety: Monitor the pressure inside the carbon canister in real time, enabling the system to operate within a safe range;

[0059] High efficiency: Respond quickly, timely feedback the pressure change, and improve the control accuracy of the system;

[0060] The liquid level sensor is installed at the bottom inside the box;

[0061] The liquid level sensor is used to monitor the liquid level inside the carbon canister, enabling the normal adsorption and release of fuel vapor and providing real-time data for controlling the system adjustment;

[0062] The liquid level sensor needs to have high precision, be able to accurately measure the liquid level change inside the carbon canister; therefore, the liquid level sensor needs to have good corrosion resistance to adapt to the fuel environment;

[0063] Select corrosion-resistant materials, such as stainless steel or polymer materials; adopt high-precision processing technology to ensure the measurement accuracy and response speed of the sensor;

[0064] Integrate the liquid level sensor with an integrated circuit to achieve real-time data acquisition and transmission;

[0065] The liquid level sensor has the following advantages in this utility model:

[0066] Real-time monitoring: Monitor the liquid level inside the carbon canister in real time, enabling the system to operate normally;

[0067] High efficiency: High-precision measurement, improving the control accuracy of the system.

[0068] Specifically, in an embodiment of the present application, the liquid level valve 1 is installed at the top inside the box and communicated with the basic solenoid valve 3;

[0069] The liquid level valve 1 is used to control the liquid level inside the carbon canister, enabling the normal adsorption and release of fuel vapor and preventing liquid fuel from entering the carbon canister;

[0070] The liquid level valve 1 can accurately control the liquid level in the carbon canister, enabling the system to operate stably; the liquid level valve 1 has a fast response ability and can adjust the liquid level change in a timely manner;

[0071] Therefore, materials with high temperature resistance and corrosion resistance are selected, such as special alloys or polymer materials; high-precision machining technology is adopted to ensure the sealing performance and response speed of the valve;

[0072] The electromagnetic coil uses a high-quality electromagnetic coil to enable the valve to respond quickly and operate stably.

[0073] Specifically, in an embodiment of the present application, the liquid level valve 1 has the following advantages in the present utility model:

[0074] Stability: It stabilizes the liquid level in the carbon canister and improves the reliability of the system;

[0075] High efficiency: It responds quickly to enable the normal adsorption and release of fuel vapor;

[0076] The working mode of the present utility model is divided into:

[0077] Pre-injection pressure relief mode: The basic valve is opened, and the pressure sensor 2 is opened;

[0078] Filling volume mode: When the liquid level does not reach the set value, the basic electric control valve remains open and the system is fully open; when the liquid level has reached the set value, the basic electric control valve is switched to the closed state and the system is closed;

[0079] Fuel system OBD mode: After pressurizing the system, maintain the pressure (3 - 5 kPa or -5 - -3 kPa), and judge the system leakage level through the attenuation of pressure (CVS is normally open and closed during OBD detection);

[0080] Desorption mode: The engine 8 sucks fresh air from the CVS using vacuum, cleans the HC in the carbon canister and transfers it to the engine 8;

[0081] The processing conditions in the above modes:

[0082] Processing medium: oil and gas (mixture of oil and gas and air), air;

[0083] Temperature condition: -40°C to +85°C.

[0084] Specifically, in an embodiment of the present application, the intake process of the present utility model:

[0085] The intake pipeline Y intakes, the CVS valve 6 is opened, passes through the inlet of the carbon canister pump 7, rotates through the impeller to the outlet of the carbon canister pump 7, is connected to the basic solenoid valve 3 through a hose at the outlet of the carbon canister pump 7, the basic solenoid valve 3 is connected to the basic valve through a hose, the basic valve is opened, and reaches the outlet pipeline A.

[0086] The present utility model aims to solve the following problems: The integrated carbon canister pump device integrates the carbon canister pump, CVS valve, and basic solenoid valve in one device, achieving efficient adsorption and release of fuel vapor; during the manufacturing process, attention should be paid to material selection, precision machining, and anti-corrosion treatment to ensure the efficiency and reliability of the system; through reasonable pipeline design and intelligent control system, the integrated device can improve the working efficiency and convenience of the system;

[0087] Further improvements in the above technical equipment are as follows: improving the integration and modular design of the device to make it more compact, easier to maintain, and more expandable;

[0088] Through modular design: Designing each functional module (such as pumps, valves, sensors) as independent modules for easy replacement and maintenance;

[0089] Integrated circuit: Adopting a highly integrated circuit design to reduce connection lines and interfaces and improve the reliability of the system;

[0090] Compact layout: Optimizing the layout design of each component to reduce the volume and weight of the device;

[0091] Through the above improvements, the following advantages are achieved:

[0092] Easy to maintain: The modular design facilitates the replacement and maintenance of each component;

[0093] Strong expandability: Functional modules can be flexibly added or replaced according to requirements;

[0094] High reliability: The integrated circuit design reduces the failure points and improves the reliability of the system.

[0095] Specifically, in an embodiment of the present application, the technical control is further improved by introducing intelligent and automated technologies to improve the automation degree and intelligent level of the system;

[0096] Through the intelligent control system: Developing an intelligent control system to achieve automatic control and real-time monitoring of each component;

[0097] Data analysis: Introducing data analysis and machine learning technologies to analyze and optimize the operation data to improve the efficiency and reliability of the system;

[0098] Remote monitoring: Through Internet of Things technology, remote monitoring and management of the device are achieved;

[0099] Through the above improvements, the following advantages are achieved:

[0100] High automation degree: Reducing manual intervention and improving the automation degree of the system;

[0101] High intelligent level: Through data analysis and machine learning technologies, intelligent optimization and predictive maintenance are achieved;

[0102] Remote management: Facilitates remote monitoring and management, improving management efficiency;

[0103] Further improvement in the above technical materials and processes, adopting more advanced materials and manufacturing processes to improve the durability and performance of the device;

[0104] Through new materials: Adopting new materials with high temperature resistance and corrosion resistance, such as special alloys and polymer materials, to improve the durability and performance of the device;

[0105] Process: Adopting advanced manufacturing processes, such as 3D printing and laser cutting, to improve manufacturing precision and efficiency;

[0106] Surface treatment: Conducting surface treatment on key components, such as coating and anti-corrosion treatment, to improve their durability and performance;

[0107] The above improvements have the following advantages:

[0108] High durability: New materials and advanced processes improve the durability and performance of the device;

[0109] High manufacturing precision: Advanced processes improve manufacturing precision, reducing errors and failures;

[0110] Superior performance: Surface treatment improves the durability and performance of key components;

[0111] Further improvements include:

[0112] I. Adopting electrochemical adsorption technology

[0113] Adopting electrochemical adsorption technology to replace the traditional carbon canister adsorption technology to improve adsorption efficiency and environmental protection performance;

[0114] Through the electrochemical adsorption device: Designing and developing an electrochemical adsorption device to adsorb and decompose fuel vapor through electrochemical reactions;

[0115] Intelligent control system: Developing an intelligent control system to achieve automatic control and real-time monitoring of the electrochemical adsorption device;

[0116] Data analysis: Introducing data analysis and machine learning technologies to analyze and optimize the operation data to improve the efficiency and reliability of the system;

[0117] The above improvements have the following advantages:

[0118] High adsorption efficiency: Electrochemical adsorption technology has higher adsorption efficiency and processing capacity;

[0119] Good environmental protection performance: Electrochemical adsorption technology can decompose harmful substances and reduce pollution;

[0120] High level of intelligence: Through intelligent control systems and data analysis technologies, intelligent optimization and predictive maintenance are achieved;

[0121] II. Adoption of nanomaterials and technologies

[0122] Adoption of nanomaterials and technologies to improve the adsorption performance and durability of the device;

[0123] Nanomaterials: Nanomaterials such as carbon nanotubes and nanofibers are adopted to improve the adsorption performance and durability;

[0124] Nanocoatings: Key components are treated with nanocoatings to improve their durability and performance;

[0125] Advanced manufacturing processes: Advanced manufacturing processes such as nanolithography and nanocoating are adopted to improve manufacturing precision and efficiency;

[0126] The following advantages are achieved through the above improvements:

[0127] Superior adsorption performance: Nanomaterials have higher adsorption performance and treatment capacity;

[0128] High durability: Nanomaterials and nanocoatings improve the durability and performance of the device;

[0129] High manufacturing precision: Advanced manufacturing processes improve manufacturing precision, reducing errors and failures;

[0130] By increasing integration and modular design, introducing intelligent and automated technologies, and adopting more advanced materials and manufacturing processes, the integrated canister pump device can further improve its efficiency, reliability, and environmental performance; in addition, the adoption of electrochemical adsorption technology and nanomaterial technology is also a better choice in the future, which can significantly enhance the adsorption performance and durability of the device; through these improvements and choices, the integrated canister pump device will be able to better meet future requirements and promote technological progress and application development.

[0131] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the mature bolt, rivet, welding and other conventional means in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art. Plus, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0132] The above description is about the present utility model and its implementation modes. Such description is not restrictive. What is shown in the drawings is only one of the implementation modes of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural modes and embodiments similar to the technical solution without departing from the purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A carbon canister pump integrated with a pump valve, comprising a housing, characterized in that: A carbon canister pump, a CVS valve, and a basic solenoid valve are provided inside the housing. The carbon canister pump, the CVS valve, and the basic solenoid valve are arranged in sequence from top to bottom. The carbon canister pump is communicated with the CVS valve. A carbon canister ACC is provided outside the housing. The carbon canister pump, the carbon canister ACC, and the basic solenoid valve are communicated in sequence; An intake pipe Y is provided at a position corresponding to the intake port of the CVS valve on the outside of the housing, and the intake pipe Y is communicated with the intake port of the CVS valve; An outlet pipe A is provided at a position corresponding to the exhaust port of the basic solenoid valve on the outside of the housing, and the outlet pipe A is communicated with the exhaust port of the basic solenoid valve; The outlet pipe A is communicated with a box body. A pressure sensor, a liquid level sensor, and a liquid level valve are provided inside the box body.

2. The carbon canister pump integrated with a pump valve according to claim 1, wherein: A gray filter is provided on the carbon canister ACC.

3. The carbon canister pump integrated with a pump valve according to claim 1, wherein: The carbon canister pump, the CVS valve, the basic solenoid valve, the pressure sensor, the liquid level sensor, and the liquid level valve are all electrically connected to a controller.

4. The canister pump integrated with a pump valve according to claim 1 or 3, characterized in that: The pressure sensor is installed at the top inside the box body.

5. The carbon canister pump integrated with a pump valve according to claim 1 or 3, characterized in that: The liquid level sensor is installed at the bottom inside the box body.

6. The canister pump integrated with a pump valve according to claim 1 or 3, characterized in that: The liquid level valve is installed at the top inside the box body and is communicated with the basic solenoid valve.

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