CN113203558A - Device and method for diagnosing related faults of carbon tank electromagnetic valve - Google Patents
Device and method for diagnosing related faults of carbon tank electromagnetic valve Download PDFInfo
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- CN113203558A CN113203558A CN202110486067.0A CN202110486067A CN113203558A CN 113203558 A CN113203558 A CN 113203558A CN 202110486067 A CN202110486067 A CN 202110486067A CN 113203558 A CN113203558 A CN 113203558A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention provides a device and a method for diagnosing related faults of a carbon tank electromagnetic valve, wherein the device comprises the electromagnetic valve, a first fuel oil pipeline, a second fuel oil pipeline and a third fuel oil pipeline; one end of the first fuel pipeline is a first connecting port, and the other end of the first fuel pipeline is a second connecting port; one end of the third fuel pipeline is a third connecting port, and the other end of the third fuel pipeline is a fourth connecting port; the inlet end of the electromagnetic valve is connected with a second connecting port of the first fuel pipeline; the outlet end of the electromagnetic valve is connected with a fourth connecting port of the third fuel pipeline; one end of the second fuel pipeline is connected with the first fuel pipeline through a first three-way valve. The invention has the beneficial effects that: the invention provides a device and a method for fault diagnosis of an automobile carbon tank electromagnetic valve with adjustable leakage.
Description
Technical Field
The invention belongs to the field of vehicle-mounted diagnosis, and particularly relates to a device and a method for diagnosing related faults of a carbon tank electromagnetic valve.
Background
The automobile carbon tank system is an important ring in an evaporative emission control system, and can store oil vapor generated in a fuel tank and introduce the oil vapor into an engine for combustion, so that the utilization rate of gasoline is improved. The carbon tank solenoid valve is the key subassembly of guide oil gas flow in the carbon tank system, and its jamming, reveal and full open fault can lead to vehicle idle unstability, oil consumption increase and hydrocarbon emission scheduling problem not up to standard, therefore on-vehicle diagnosis (OBD) need monitor faults such as carbon tank solenoid valve jamming, reveal and full open.
The existing diagnosis method of the carbon tank electromagnetic valve generally utilizes a BOB junction box to be externally connected with a resistor or an accessory, so as to simulate the full opening and leakage faults of the carbon tank electromagnetic valve; or the carbon tank electromagnetic valve is disconnected firstly, and then a leakage hole is connected between the desorption pipeline and the engine air inlet manifold to cause the carbon tank electromagnetic valve related fault codes. However, the two methods are complex to connect and need more accessories; meanwhile, the simulated oil gas leakage amount is limited, and the clamping stagnation, leakage and full-open fault codes of the carbon tank electromagnetic valve cannot be effectively generated, so that a device and a method which are adjustable in leakage amount, integrated in device and capable of automatically monitoring related faults of the carbon tank electromagnetic valve are needed to be designed.
Disclosure of Invention
In view of this, the present invention is directed to a device and a method for diagnosing related faults of a carbon canister solenoid valve, in which a fault simulation device and a fault processing system are packaged in the same device, and by changing the oil-gas flow in a fuel pipeline, the functions of simulating and monitoring the faults of carbon canister solenoid valve such as jamming, leakage, and normally open are realized.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in a first aspect, the scheme discloses a device for diagnosing related faults of a carbon tank electromagnetic valve, which comprises an electromagnetic valve, a first fuel oil pipeline, a second fuel oil pipeline and a third fuel oil pipeline;
one end of the first fuel pipeline is a first connecting port, and the other end of the first fuel pipeline is a second connecting port;
one end of the third fuel pipeline is a third connecting port, and the other end of the third fuel pipeline is a fourth connecting port;
the inlet end of the electromagnetic valve is connected with a second connecting port of the first fuel pipeline;
the outlet end of the electromagnetic valve is connected with a fourth connecting port of the third fuel pipeline;
one end of the second fuel pipeline is connected with the first fuel pipeline through a first three-way valve, and the other end of the second fuel pipeline is connected with the third fuel pipeline through a second three-way valve;
the first three-way valve is arranged between the first connecting port and the second connecting port;
the second three-way valve is arranged between the third connecting port and the fourth connecting port;
the second fuel pipeline is provided with a leakage unit, the leakage unit comprises a leakage adjusting unit arranged on the second fuel pipeline, and the leakage adjusting unit is used for adjusting the leakage amount.
The electromagnetic valve comprises a carbon tank electromagnetic valve;
the system also comprises a fault handling system, and the fault handling system is used for detecting related faults of the carbon tank solenoid valve.
The fault processing system comprises a power supply module, a processor, a power supply input interface, a display module, a pressure signal input module, an electric signal converter and a signal converter;
the power supply input interface is connected with an external power supply and the power supply module, and the power supply module acquires power supply voltage through the power supply input interface and provides power supply for the processor, the display module and other devices;
the pressure signal input module receives the pressure signal converted by the electric signal converter and inputs the pressure signal into the processor for analysis;
the processor receives switching signals of the carbon tank electromagnetic valve and the ventilation valve through the signal processor;
the processor processes the input pressure signal and the signal processor parameter, judges whether the carbon tank electromagnetic valve fault occurs or not and transmits the result to the connected display module;
and the display module is connected with the processor and the display screen and is used for displaying the fault judgment result of the carbon tank electromagnetic valve.
The first connecting port of the first fuel pipeline is connected with the desorption port of the carbon tank, and the third connecting port of the third fuel pipeline is connected with the air inlet manifold of the engine.
The testing box is of a box body structure with an opening at the upper part, and a first top cover and a second top cover are arranged at the opening part above the box body interface;
the box structure is characterized by further comprising a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft, wherein one side of the first top cover is movably connected with the box structure through the first rotating shaft and the second rotating shaft, and one side of the second top cover is movably connected with the box structure through the third rotating shaft and the fourth rotating shaft.
The opening edge position of test box top upwards extends and forms the arch, and the opening of test box top forms the holding tank structure that is used for holding first top cap and second top cap.
The test box is also internally provided with a fixing groove for placing the electromagnetic valve.
One end of a first connecting port of the first fuel pipeline extends out of the test box, and one end of a third connecting port of the third fuel pipeline extends out of the test box.
The leakage adjusting unit comprises a butterfly valve, and the butterfly valve comprises an adjusting handle, a dial, a valve rod, a valve body, a flange hole, a valve seat, a butterfly plate and a fixed seat;
the adjusting handle is arranged at the top end of the butterfly valve, the dial is connected below the adjusting handle, the dial is provided with multiple gears, and the opening degree of the butterfly plate is controlled by rotating the adjusting handle and the valve rod, so that the continuous adjustment of the oil-gas leakage amount is realized;
the valve body is made of stainless steel and is connected with the fault simulation device through a flange hole in the valve body, and a fixing seat is arranged at the bottom end of the butterfly valve.
In a third aspect, the scheme discloses a method for diagnosing faults related to a carbon tank electromagnetic valve, which comprises the following steps:
s1, keeping the fuel liquid level of the test vehicle between 15% and 85%, and fully heating the vehicle;
s2, connecting a leakage-adjustable butterfly valve, a fault simulation device and other devices, detaching a carbon tank electromagnetic valve of a test vehicle, installing the carbon tank electromagnetic valve and an original vehicle wiring harness on the fault simulation device, completing communication between a processor and an Electronic Control Unit (ECU) and confirming that the vehicle has no fault currently;
s3, soaking the vehicle to be tested for 8 hours at the temperature of 10-35 ℃;
s4, electrifying after the vehicle immersion, reading ECU vehicle data by using a processor, controlling an adjusting handle to a small opening degree when the temperature difference between the engine coolant and the environment temperature measured by the vehicle is less than 7 ℃ and the temperature is required to meet the requirement by continuing immersion if the difference is large, starting the engine and idling for 1min, and observing whether a carbon tank electromagnetic valve leakage fault code is generated by the processor;
s5, if the fault code is not generated, increasing the leakage gear, re-soaking the vehicle and continuing the test until the fault code is generated;
and S6, if the leakage quantity is not generated, repeating the step five to the generation of fault codes, and recording the leakage quantity gear of the adjusting handle.
Compared with the prior art, the device and the method for diagnosing the relevant faults of the carbon tank solenoid valve have the following beneficial effects:
the invention provides a device and a method for fault diagnosis of an automobile carbon tank electromagnetic valve with adjustable leakage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an overall frame diagram of a failure diagnosis apparatus according to the present invention;
fig. 2 is a schematic diagram of the internal arrangement of the fault diagnosis device according to the present invention;
FIG. 3 is a diagram of a butterfly valve for regulating leakage according to the present invention;
FIG. 4 is a schematic diagram of a fault handling system according to the present invention;
FIG. 5 is a schematic diagram of the present invention relating to the use of a fuel tank vacuum fault diagnostic;
FIG. 6 is a flow chart of a method of diagnosing a carbon canister solenoid valve related fault of the present invention;
FIG. 7 is a schematic view of the structure of the top cover according to the present invention;
fig. 8 is a front view of the device according to the invention.
Description of reference numerals:
201-a first top cover; 202-a second top cover; 203-a first rotating shaft; 204-a second rotating shaft; 205-a third shaft; 206-a fourth shaft; 301-canister solenoid valve; 303-a first three-way valve; 304-a leakage adjustment unit; 305-a second three-way valve; 308-a fixed slot; 309-quick plug end; 310-a first fuel line; 311-a second fuel line; 312-a third fuel line; 317-original vehicle wiring harness; 401-adjusting handle; 402-a dial; 403-a valve stem; 404-a valve body; 405-flange hole; 406-a valve seat; 407-butterfly plate; 408-fixed seat.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention will now be described in further detail with reference to the accompanying drawings and specific examples, which are given by way of illustration only and are not intended to limit the invention. In order to solve the technical problem, the invention provides a device and a method for achieving leakage fault of an automobile carbon tank electromagnetic valve 301 with adjustable leakage amount.
Fig. 1 is a block diagram of the entire fault diagnosis apparatus. The fault diagnosis device is divided into a fault simulation device and a fault processing system, and two ends of the fault diagnosis device are respectively connected with a carbon tank desorption pipeline and an air inlet manifold of the engine.
Fig. 2 is a schematic diagram of the internal layout of the fault diagnosis apparatus. The fault diagnosis device encapsulates the fault simulation device and the fault processing system in a rectangular box body, and the length, the width and the height of the rectangular box body are 350mm, 200mm and 100mm respectively. The fault simulation device comprises a first fuel vacuum pipeline, a second fuel vacuum pipeline, a third fuel vacuum pipeline, a pressure sensor, two flange plates, two three-way valves, a plurality of pipeline joints and a fuel pipe quick joint. Carbon tank desorption pipeline and solenoid valve pipeline interface are connected respectively to first fuel pipeline 310 both ends, and first fuel pipeline 310 joint end sees through the round hole of packaging box side and links to each other with carbon tank desorption pipeline, and quick plug end 309 connects solenoid valve pipeline interface, pressure sensor is located fault simulation device's first fuel pipeline 310, the signal of telecommunication converter among the fault processing system is connected to pressure sensor. The two ends of the third fuel pipeline 312 are respectively connected with an air inlet manifold and a solenoid valve quick plug of the engine, the quick plug end 309 of the third fuel pipeline 312 is connected with the air inlet manifold of the engine through a round hole on the side surface of the packaging box body, and the joint end of the pipeline is connected with the solenoid valve quick plug. The carbon tank electromagnetic valve 301 is connected with the first fuel pipeline 310 and the third fuel pipeline 312 through a quick plug and a pipeline connector, and the carbon tank electromagnetic valve 301 is connected with an electromagnetic valve original vehicle wiring harness 317 through a round hole in the side face of the box body. The two ends of the second fuel pipeline 311 are connected with the first and second fuel pipelines 311 through the first and second three-way valves 305, the middle of the second fuel pipeline 311 is disconnected, and the disconnected part is connected with a butterfly valve for adjusting leakage amount through a flange. The quick plug specification of the fuel pipeline is phi 12mm multiplied by 11.8mm, and the diameter of the pipeline is 11.8 mm.
Please refer to fig. 3 for a structure diagram of a butterfly valve for adjusting leakage. The butterfly valve comprises an adjusting handle 401, a dial 402, a valve rod 403, a valve body 404, a flange hole 405, a valve seat 406, a butterfly plate 407, a fixed seat 408 and the like, as shown in fig. 3. The adjusting handle 401 is arranged at the top end of the butterfly valve, the dial 402 is connected below the adjusting handle 401, the dial 402 is provided with multi-gear adjusting control, the opening degree of the butterfly plate 407 is controlled through the adjusting handle 401 and the valve rod 403, and continuous adjustment of oil-gas leakage amount can be achieved. The valve body 404 is made of stainless steel and is connected to a fault simulation device through a flange hole 405, the inner diameter of the valve seat 406 and the outer diameter of the butterfly plate 407 are 11.8mm and are the same as the diameter of a fuel pipeline, and a fixing seat 408 is arranged at the bottom end of the butterfly valve.
Fig. 4 is a schematic diagram of a fault handling system. The fault processing system comprises a power supply module, a processor, a power supply input interface, a display module, a pressure signal input module, an electric signal converter, a signal processor and the like. The power input interface is connected with the power module and an external power supply, wherein the external power supply is a direct current power supply, the voltage range is 9-36V, and the power can be obtained from external power supply equipment. The power supply module obtains power supply voltage through the power supply input interface and provides power supply for the processor, the display module and other devices. The pressure signal input module receives the pressure signal converted by the electric signal converter and inputs the pressure signal into the processor for analysis. The processor receives the on-off signals of the carbon tank electromagnetic valve 301 and the ventilation valve through the signal processor. The processor processes the input pressure signal and the signal processor parameters, determines whether a failure occurs in the canister solenoid valve 301, and transmits the result to the connected display module. The display module is connected with the processor and the display screen and used for displaying the fault judgment result of the carbon tank electromagnetic valve 301, and fig. 5 is a schematic diagram of fault diagnosis of the carbon tank electromagnetic valve 301.
Fig. 6 is a flow chart of a method for diagnosing faults related to the carbon canister solenoid valve 301, and the method for detecting the OBD by using the device comprises the following steps:
s1, keeping the fuel liquid level of the test vehicle between 15% and 85%, and fully heating the vehicle;
s2, connecting a leakage-adjustable butterfly valve, a fault simulation device and other devices, detaching a carbon tank electromagnetic valve of a test vehicle, installing the carbon tank electromagnetic valve and an original vehicle wiring harness on the fault simulation device, completing communication between a processor and an Electronic Control Unit (ECU) and confirming that the vehicle has no fault currently;
s3, soaking the vehicle to be tested for 8 hours at the temperature of 10-35 ℃;
s4, electrifying after the vehicle immersion, reading ECU vehicle data by using a processor, controlling an adjusting handle to a small opening degree when the temperature difference between the engine coolant and the environment temperature measured by the vehicle is less than 7 ℃ and the temperature is required to meet the requirement by continuing immersion if the difference is large, starting the engine and idling for 1min, and observing whether a carbon tank electromagnetic valve leakage fault code is generated by the processor;
s5, if the fault code is not generated, increasing the leakage gear, re-soaking the vehicle and continuing the test until the fault code is generated;
and S6, if the leakage quantity is not generated, repeating the step five to the generation of fault codes, and recording the leakage quantity gear of the adjusting handle. It should be noted that the test principle of the present solution is as follows: under idle speed or steady state operating mode, ECU control carbon tank breather valve closes with the solenoid valve simultaneously, receives the oil tank pressure sensor signal of test vehicle through ECU, and then judges whether evaporation line appears revealing and show relevant fault code through the treater. If the system is normal, the pressure of the oil tank is a constant value, and if the carbon tank electromagnetic valve 301 leaks, the vacuum degree in the oil tank is greatly increased due to the negative pressure of the intake manifold, and the ECU judges that a fault occurs.
In a first aspect, the present disclosure discloses an apparatus for diagnosing a fault associated with a canister solenoid valve 301, which includes a solenoid valve, a first fuel line 310, a second fuel line 311, and a third fuel line 312;
one end of the first fuel pipeline 310 is a first connecting port, and the other end of the first fuel pipeline is a second connecting port;
one end of the third fuel pipeline 312 is a third connecting port, and the other end is a fourth connecting port;
the inlet end of the electromagnetic valve is connected with the second connecting port of the first fuel pipeline 310;
the outlet end of the solenoid valve is connected with a fourth connecting port of the third fuel pipeline 312;
one end of the second fuel line 311 is connected to the first fuel line 310 through the first three-way valve 303,
the other end of the second fuel pipeline 311 is connected with a third fuel pipeline 312 through a second three-way valve 305;
the first three-way valve 303 is disposed between the first connection port and the second connection port;
the second three-way valve 305 is provided between the third connection port and the fourth connection port;
the second fuel line 311 is provided with a leakage unit comprising a leakage adjustment unit 304 arranged on the second fuel line 311, said leakage adjustment unit 304 being used to adjust the amount of leakage.
The solenoid valve comprises a carbon canister solenoid valve 301.
A fault handling system is also included for detecting a fault associated with canister solenoid valve 301.
The fault processing system comprises a power supply module, a processor, a power supply input interface, a display module, a pressure signal input module, an electric signal converter and a signal converter;
the power supply input interface is connected with an external power supply and the power supply module, and the power supply module acquires power supply voltage through the power supply input interface and provides power supply for the processor, the display module and other devices;
the pressure signal input module receives the pressure signal converted by the electric signal converter and inputs the pressure signal into the processor for analysis;
the processor receives switching signals of the carbon tank electromagnetic valve 301 and the ventilation valve through the signal processor;
the processor processes the input pressure signal and the signal processor parameter, judges whether the carbon tank electromagnetic valve 301 has a fault or not and transmits the result to the connected display module;
and the display module is connected with the processor and the display screen and is used for displaying the fault judgment result of the carbon tank electromagnetic valve 301.
The first connection port of the first fuel line 310 is connected to the purge port of the canister, and the third connection port of the third fuel line 312 is connected to the intake manifold of the engine.
The testing box is of a box body structure with an opening at the upper part, and a first top cover 201 and a second top cover 202 are arranged at the opening part above the box body interface;
the box structure is characterized by further comprising a first rotating shaft 203, a second rotating shaft 204, a third rotating shaft 205 and a fourth rotating shaft 206, wherein one side of the first top cover 201 is movably connected with the box structure through the first rotating shaft 203 and the second rotating shaft 204, and one side of the second top cover 202 is movably connected with the box structure through the third rotating shaft 205 and the fourth rotating shaft 206.
The edge part of the opening above the test box extends upwards to form a bulge, and the opening above the test box forms a containing groove structure for containing the first top cover 201 and the second top cover 202.
The test box is also internally provided with a fixing groove 308, and the fixing groove 308 is used for placing the electromagnetic valve.
The first connection port of the first fuel line 310 extends out of the test box and the third connection port of the third fuel line 312 extends out of the test box.
The leakage adjusting unit 304 includes a butterfly valve including an adjusting handle 401, a dial 402, a stem 403, a valve body 404, a flange hole 405, a valve seat 406, a butterfly plate 407, and a fixing seat 408;
the adjusting handle 401 is arranged at the top end of the butterfly valve, the dial 402 is connected below the adjusting handle 401, the dial 402 is provided with multiple gears, and the opening degree of the butterfly plate 407 is controlled through rotation of the adjusting handle 401 and the valve rod 403, so that continuous adjustment of oil gas leakage is realized;
the valve body 404 is made of stainless steel and is connected with a fault simulation device through a flange hole 405 on the valve body 404, and a fixing seat 408 is arranged at the bottom end of the butterfly valve.
A method for diagnosing a fault associated with a canister solenoid valve 301, comprising the steps of:
s1, keeping the fuel liquid level of the test vehicle between 15% and 85%, and fully heating the vehicle;
s2, connecting a leakage-adjustable butterfly valve, a fault simulation device and other devices, detaching a carbon tank electromagnetic valve of a test vehicle, installing the carbon tank electromagnetic valve and an original vehicle wiring harness on the fault simulation device, completing communication between a processor and an Electronic Control Unit (ECU) and confirming that the vehicle has no fault currently;
s3, soaking the vehicle to be tested for 8 hours at the temperature of 10-35 ℃;
s4, electrifying after the vehicle immersion, reading ECU vehicle data by using a processor, controlling an adjusting handle to a small opening degree when the temperature difference between the engine coolant and the environment temperature measured by the vehicle is less than 7 ℃ and the temperature is required to meet the requirement by continuing immersion if the difference is large, starting the engine and idling for 1min, and observing whether a carbon tank electromagnetic valve leakage fault code is generated by the processor;
s5, if the fault code is not generated, increasing the leakage gear, re-soaking the vehicle and continuing the test until the fault code is generated;
and S6, if the leakage quantity is not generated, repeating the step five to the generation of fault codes, and recording the leakage quantity gear of the adjusting handle. Those of ordinary skill in the art will appreciate that the elements and method steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of clearly illustrating the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed method and system may be implemented in other ways. For example, the above described division of elements is merely a logical division, and other divisions may be realized, for example, multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not executed. The units may or may not be physically separate, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. An apparatus for diagnosing a carbon canister solenoid valve related fault, characterized by: comprises a carbon tank electromagnetic valve, a first fuel pipeline (310), a second fuel pipeline (311) and a third fuel pipeline (312);
one end of the first fuel pipeline (310) is a first connecting port, and the other end of the first fuel pipeline is a second connecting port;
one end of the third fuel pipeline (312) is a third connecting port, and the other end of the third fuel pipeline is a fourth connecting port;
the inlet end of the carbon tank electromagnetic valve is connected with a second connecting port of the first fuel pipeline (310);
the outlet end of the carbon tank electromagnetic valve is connected with a fourth connecting port of a third fuel pipeline (312);
one end of the second fuel pipeline (311) is connected with the first fuel pipeline (310) through a first three-way valve (303), and the other end of the second fuel pipeline (311) is connected with the third fuel pipeline (312) through a second three-way valve (305);
the first three-way valve (303) is arranged between the first connecting port and the second connecting port;
a second three-way valve (305) is provided between the third connection port and the fourth connection port;
the second fuel pipeline (311) is provided with a leakage unit, the leakage unit comprises a leakage adjusting unit (304) arranged on the second fuel pipeline (311), and the leakage adjusting unit (304) is used for adjusting the leakage amount;
the system also comprises a fault handling system, and the fault handling system is used for detecting related faults of the carbon tank solenoid valve.
2. The apparatus for diagnosing a carbon canister solenoid valve related fault as recited in claim 1, wherein: the fault processing system comprises a power supply module, a processor, a power supply input interface, a display module, a pressure signal input module, an electric signal converter and a signal converter;
the power supply input interface is connected with an external power supply and the power supply module, and the power supply module acquires power supply voltage through the power supply input interface and provides power supply for the processor, the display module and other devices;
the pressure signal input module receives the pressure signal converted by the electric signal converter and inputs the pressure signal into the processor for analysis;
the processor receives switching signals of the carbon tank electromagnetic valve and the ventilation valve through the signal processor;
the processor processes the input pressure signal and the signal processor parameter, judges whether the carbon tank electromagnetic valve fault occurs or not and transmits the result to the connected display module;
and the display module is connected with the processor and the display screen and is used for displaying the fault judgment result of the carbon tank electromagnetic valve.
3. The apparatus for diagnosing a carbon canister solenoid valve related fault as recited in claim 1, wherein: the first connecting port of the first fuel pipeline (310) is connected with the desorption port of the carbon tank, and the third connecting port of the third fuel pipeline (312) is connected with the air inlet manifold of the engine.
4. The apparatus for diagnosing a carbon canister solenoid valve related fault as recited in claim 1, wherein: the testing box is of a box body structure with an opening at the upper part, and a first top cover (201) and a second top cover (202) are arranged at the opening part above the box body interface;
the box structure is characterized by further comprising a first rotating shaft (203), a second rotating shaft (204), a third rotating shaft (205) and a fourth rotating shaft (206), wherein one side of the first top cover (201) is movably connected with the box structure through the first rotating shaft (203) and the second rotating shaft (204), and one side of the second top cover (202) is movably connected with the box structure through the third rotating shaft (205) and the fourth rotating shaft (206).
5. An apparatus for diagnosing a carbon canister solenoid valve related fault as defined in claim 4 wherein: the edge part of the opening above the test box extends upwards to form a bulge, and the opening above the test box forms a containing groove structure for containing the first top cover (201) and the second top cover (202).
6. An apparatus for diagnosing a carbon canister solenoid valve related fault as defined in claim 4 wherein: the test box is also internally provided with a fixing groove (308), and the fixing groove (308) is used for placing the electromagnetic valve.
7. An apparatus for diagnosing a carbon canister solenoid valve related fault as defined in claim 4 wherein: one end of the first connecting port of the first fuel pipeline (310) extends out of the test box, and one end of the third connecting port of the third fuel pipeline (312) extends out of the test box.
8. An apparatus for diagnosing a carbon canister solenoid valve related fault as defined in claim 4 wherein: the leakage adjusting unit (304) comprises a butterfly valve, and the butterfly valve comprises an adjusting handle (401), a dial (402), a valve rod (403), a valve body (404), a flange hole (405), a valve seat (406), a butterfly plate (407) and a fixed seat (408);
the adjusting handle (401) is arranged at the top end of the butterfly valve, the dial (402) is connected below the adjusting handle, the dial (402) is provided with multiple gears, and the opening degree of the butterfly plate (407) is controlled through rotation of the adjusting handle (401) and the valve rod (403), so that continuous adjustment of oil-gas leakage amount is realized;
the valve body (404) is made of stainless steel and is connected with the fault simulation device through a flange hole (405) in the valve body (404), and a fixing seat (408) is arranged at the bottom end of the butterfly valve.
9. The method for diagnosing the malfunction relating to the canister solenoid valve as recited in any one of claims 1 to 8, comprising the steps of:
s1, keeping the fuel liquid level of the test vehicle between 15% and 85%, and fully heating the vehicle;
s2, connecting a leakage-adjustable butterfly valve, a fault simulation device and other devices, detaching a carbon tank electromagnetic valve of a test vehicle, installing the carbon tank electromagnetic valve and an original vehicle wiring harness on the fault simulation device, completing communication between a processor and an Electronic Control Unit (ECU) and confirming that the vehicle has no fault currently;
s3, soaking the vehicle to be tested for 8 hours at the temperature of 10-35 ℃;
s4, electrifying after the vehicle immersion, reading ECU vehicle data by using a processor, controlling an adjusting handle to a small opening degree when the temperature difference between the engine coolant and the environment temperature measured by the vehicle is less than 7 ℃ and the temperature is required to meet the requirement by continuing immersion if the difference is large, starting the engine and idling for 1min, and observing whether a carbon tank electromagnetic valve leakage fault code is generated by the processor;
s5, if the fault code is not generated, increasing the leakage gear, re-soaking the vehicle and continuing the test until the fault code is generated;
and S6, if the leakage quantity is not generated, repeating the step five to the generation of fault codes, and recording the leakage quantity gear of the adjusting handle.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550836A (en) * | 2021-08-13 | 2021-10-26 | 安徽江淮汽车集团股份有限公司 | Carbon tank electromagnetic valve leakage diagnosis method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6308119B1 (en) * | 1999-11-10 | 2001-10-23 | Delphi Technologies, Inc. | Preset diagnostic leak detection method for an automotive evaporative emission system |
| US6378505B1 (en) * | 2000-08-15 | 2002-04-30 | Ford Global Technologies, Inc. | Fuel tank pressure control system |
| US7350512B1 (en) * | 2007-04-30 | 2008-04-01 | Delphi Technologies, Inc. | Method of validating a diagnostic purge valve leak detection test |
| CN106769104A (en) * | 2017-02-15 | 2017-05-31 | 中国汽车技术研究中心 | Fuel system canister is desorbed nominal data acquisition system |
| CN210770286U (en) * | 2019-09-25 | 2020-06-16 | 常州市三佑塑业有限公司 | Novel handle butterfly valve |
| CN111946477A (en) * | 2020-07-23 | 2020-11-17 | 东风汽车集团有限公司 | Method for monitoring leakage of carbon tank cleaning electromagnetic valve |
| CN112394282A (en) * | 2020-11-26 | 2021-02-23 | 安徽江淮汽车集团股份有限公司 | Carbon tank electromagnetic valve diagnosis method, device, equipment and storage medium |
-
2021
- 2021-04-30 CN CN202110486067.0A patent/CN113203558B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6308119B1 (en) * | 1999-11-10 | 2001-10-23 | Delphi Technologies, Inc. | Preset diagnostic leak detection method for an automotive evaporative emission system |
| US6378505B1 (en) * | 2000-08-15 | 2002-04-30 | Ford Global Technologies, Inc. | Fuel tank pressure control system |
| US7350512B1 (en) * | 2007-04-30 | 2008-04-01 | Delphi Technologies, Inc. | Method of validating a diagnostic purge valve leak detection test |
| CN106769104A (en) * | 2017-02-15 | 2017-05-31 | 中国汽车技术研究中心 | Fuel system canister is desorbed nominal data acquisition system |
| CN210770286U (en) * | 2019-09-25 | 2020-06-16 | 常州市三佑塑业有限公司 | Novel handle butterfly valve |
| CN111946477A (en) * | 2020-07-23 | 2020-11-17 | 东风汽车集团有限公司 | Method for monitoring leakage of carbon tank cleaning electromagnetic valve |
| CN112394282A (en) * | 2020-11-26 | 2021-02-23 | 安徽江淮汽车集团股份有限公司 | Carbon tank electromagnetic valve diagnosis method, device, equipment and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 中国汽车技术研究中心标准化研究所: "6.1.2 测试箱结构", 《汽车标准汇编 1991》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550836A (en) * | 2021-08-13 | 2021-10-26 | 安徽江淮汽车集团股份有限公司 | Carbon tank electromagnetic valve leakage diagnosis method |
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