CN111365224A - Test equipment of carbon tank cleaning pump - Google Patents

Abstract

The invention relates to the technical field of carbon tank cleaning pump testing, in particular to testing equipment of a carbon tank cleaning pump, which comprises a temperature box with adjustable internal temperature and an external air inlet pipeline arranged outside the temperature box, wherein a testing pipeline, an internal air inlet pipeline, an air outlet pipeline, an internal air inlet valve arranged on the internal air inlet pipeline and an air outlet valve arranged on the air outlet pipeline are arranged in the temperature box, the testing pipeline comprises a testing pipeline and a pump arranged on the testing pipeline, an inlet and an outlet of the testing pipeline are respectively communicated with the internal air inlet pipeline and the air outlet pipeline, the external air inlet pipeline is communicated with an inlet of the testing pipeline, and a heater and an external air inlet valve are arranged on the external air inlet pipeline. The gas temperature of the pump can be changed through the heater, so that the gas temperature is inconsistent with the ambient temperature of the pump in the temperature box, and then the gas temperature of the pump can be tested according to the testing scheme that the gas temperature is consistent or inconsistent with the ambient temperature of the pump through the opening and closing of the air inlet valve in the box and the air inlet valve outside the box, so that the diversity of the testing scheme is realized.

Description

Test equipment of carbon tank cleaning pump

Technical Field

The invention relates to the technical field of carbon tank cleaning pump testing, in particular to testing equipment for a carbon tank cleaning pump.

Background

The carbon tank cleaning pump is used for actively extracting fuel vapor in the carbon tank in an engine fuel evaporation and discharge system without depending on pressure difference between the carbon tank and an inlet of a turbocharger, and can more efficiently prevent the fuel vapor in the carbon tank from diffusing to cause environmental pollution. The durability and longevity of the canister purge pump determine the operational performance and durability of the evaporative emission system of the engine. In the prior art, a test for testing the durability and the service life of a carbon tank cleaning pump is carried out in a temperature box, the ambient temperature around the pump and the temperature of gas pumped by the pump are kept consistent in the test, a test scheme that the ambient temperature around the pump and the temperature of the gas pumped by the pump are inconsistent cannot be realized, and the defect of single achievable test scheme exists.

Disclosure of Invention

The invention aims to provide a test device for a carbon tank cleaning pump, which can meet the requirements of durability and service life test schemes of the carbon tank cleaning pump on diversity and overcome the defects in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a test equipment of carbon tank scavenging pump, including the temperature case with adjustable inside temperature and locate the outside case inlet channel of temperature case, be equipped with the test pipeline in the temperature case, the incasement inlet channel, the pipeline of giving vent to anger, locate the incasement admission valve on the incasement inlet channel and locate the air outlet valve on the pipeline of giving vent to anger, the test pipeline includes the test pipeline and locates the pump on the test pipeline, the entry and the export of test pipeline are linked together with the incasement inlet channel and the pipeline of giving vent to anger respectively, the case outer inlet channel is linked together with the entry of test pipeline, be equipped with warmer and case outer admission valve on the case outer inlet channel.

Preferably, a gas storage tank is arranged in the temperature box, the in-box gas inlet pipeline and the out-box gas inlet pipeline are communicated with a gas inlet of the gas storage tank, and an inlet of the test pipeline is communicated with a gas outlet of the gas storage tank.

Preferably, the gas tank is provided with a gas tank pressure measuring member for detecting the pressure inside the gas tank and a gas tank temperature measuring member for detecting the temperature inside the gas tank.

Preferably, the test line further comprises an inlet valve and an outlet valve provided on the test conduit, the inlet valve and the outlet valve being located on an inlet side and an outlet side of the pump, respectively.

Preferably, the test pipeline further comprises an inlet pressure measuring part and an outlet pressure measuring part for detecting the pressure in the test pipeline, and an inlet temperature measuring part and an outlet temperature measuring part for detecting the temperature in the test pipeline, wherein the inlet pressure measuring part and the outlet pressure measuring part are respectively positioned on the inlet side and the outlet side of the pump; the inlet temperature measuring member and the outlet temperature measuring member are respectively located on an inlet side and an outlet side of the pump.

Preferably, the test line further comprises a regulating valve disposed on the test line.

Preferably, a plurality of test pipelines are arranged and connected in parallel.

Preferably, the in-tank air inlet valve is a three-way air inlet valve, and three ports of the three-way air inlet valve are respectively communicated with the inlet of the test pipeline, the inner space of the temperature box and the outside of the temperature box.

Preferably, the air outlet valve is a three-way air outlet valve, and three interfaces of the three-way air outlet valve are respectively communicated with an outlet of the test pipeline, the inner space of the temperature box and the outside of the temperature box.

Preferably, an outside-tank temperature measuring member for detecting the temperature in the outside-tank air intake duct is provided on the outside-tank air intake duct downstream of the warmer.

Compared with the prior art, the invention has the remarkable progress that:

according to the test equipment for the carbon tank cleaning pump, the outside of the temperature box is additionally provided with the outside air inlet pipeline and the heater, and the temperature of gas pumped by the pump can be changed through the heater to be inconsistent with the ambient temperature around the pump in the temperature box, so that the temperature of the gas pumped by the inside air inlet pipeline in the temperature box can be consistent with the ambient temperature around the pump through the opening or closing of the inside air inlet valve and the outside air inlet valve, and the test scheme that the temperature of the gas pumped by the outside air inlet pipeline in the temperature box is inconsistent with the ambient temperature around the pump can be realized, so that the diversity of the test scheme is realized.

Drawings

Fig. 1 is a schematic structural diagram of a test apparatus for a canister purge pump according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

1. temperature box 2, case outer air inlet pipe

3. Test pipeline 31 and test pipeline

32. Pump 33, inlet valve

34. Outlet valve 35, inlet pressure measuring member

36. Outlet pressure measuring member 37, inlet temperature measuring member

38. Outlet temperature measuring member 39, regulating valve

4. Air inlet pipeline 5 and air outlet pipeline in box

6. Air inlet valve 7 and air outlet valve in box

8. Warmer 9, external air inlet valve

10. Gas tank 11, gas tank pressure measurement spare

12. Gas holder temperature measuring part 13, case outside temperature measuring part

C. Controller P, LIN control module

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

One embodiment of the test apparatus for a canister purge pump of the present invention is shown in fig. 1. The test equipment of the canister purge pump of the present embodiment is used to perform a durability and life test on the pump 32 to be tested.

The test equipment of carbon tank scavenging pump of this embodiment includes temperature case 1 and case outer inlet channel 2, is equipped with test pipeline 3, incasement inlet channel 4, pipeline 5, the incasement admission valve 6 and the air outlet valve 7 of giving vent to anger in the temperature case 1, and test pipeline 3 includes test pipeline 31 and pump 32, and pump 32 sets up on test pipeline 31, and pump 32 is the carbon tank scavenging pump of being tested. The internal temperature of the temperature box 1 is adjustable, the internal temperature of the temperature box 1 is the ambient temperature around the pump 32 in the test pipeline 3, namely the temperature box 1 is used for simulating the ambient temperature of the pump 32, and the temperature box 1 with the adjustable internal temperature can adopt the temperature box in the prior art. In this embodiment, the environmental temperature of the pump 32 is measured in the range of 4 ℃ to 120 ℃, and the temperature inside the temperature box 1 is regulated in the range of-70 ℃ to 180 ℃. In the temperature box 1, an inlet of a test pipeline 31 in the test pipeline 3 is communicated with an in-box air inlet pipeline 4, an in-box air inlet valve 6 is arranged on the in-box air inlet pipeline 4, and the on-off of the in-box air inlet pipeline 4 is controlled by opening or closing the in-box air inlet valve 6; the outlet of the test pipeline 31 is communicated with the air outlet pipeline 5, the air outlet valve 7 is arranged on the air outlet pipeline 5, and the on-off of the air outlet pipeline 5 is controlled by opening or closing the air outlet valve 7. The outside of temperature case 1 is located to case outer admission line 2, and case outer admission line 2 is linked together with test pipeline 31's entry, is equipped with warmer 8 and case outer admission valve 9 on the case outer admission line 2, through opening or closing control case outer admission line 2's break-make of case outer admission line 9, warmer 8 is used for heating the gaseous intensification that gets into case outer admission line 2.

The test equipment of carbon tank scavenging pump of this embodiment, add case outside admission line 2 and warmer 8 in temperature case 1 outside, can change the gas temperature that pump 32 extracted through warmer 8, make it inconsistent with the ambient temperature around pump 32 in temperature case 1, consequently, through opening or closing of incasement admission valve 6 and case outside admission valve 9, both can admit air by incasement admission line 4 in temperature case 1 and carry out the unanimous test scheme of the gas temperature that pump 32 extracted and the ambient temperature around pump 32, also can admit air by case outside admission line 2 and carry out the inconsistent test scheme of the gas temperature that pump 32 extracted and the ambient temperature around pump 32, thereby realize the variety of test scheme. Specifically, when the durability and service life test of the pump 32 is performed by using the test equipment of the carbon canister cleaning pump of the embodiment, the in-tank air inlet valve 6 and the air outlet valve 7 can be opened, the out-tank air inlet valve 9 can be closed, under the suction effect of the pump 31, the gas in the temperature box 1 can sequentially flow through the in-tank air inlet valve 6 on the in-tank air inlet pipeline 4, the pump 32 on the test pipeline 31 and the air outlet valve 7 on the air outlet pipeline 5 and then be discharged into the temperature box 1, and a circulation loop is formed in the temperature box 1, at this time, the temperature of the gas pumped by the pump 32 is consistent with the ambient temperature around the pump 32, so that a test scheme that the temperature of the gas pumped by the pump 32 is consistent with the ambient temperature around the pump 32; the external inlet valve 9 and the outlet valve 7 can be opened, the internal inlet valve 6 can be closed, under the pumping action of the pump 31, the gas outside the temperature box 1 enters the external inlet pipeline 2, is heated by the heater 8, flows through the pump 32 on the test pipeline 31 and the outlet valve 7 on the outlet pipeline 5, and is discharged outside the temperature box 1, at the moment, the gas pumped by the pump 32 is the gas heated by the heater 8, the temperature of the gas is adjusted and controlled by the working efficiency of the heater 8, the heated gas with the specified temperature can be input into the test pipeline 31, the temperature of the gas pumped by the pump 32 is independent of the ambient temperature around the pump 32 in the temperature box 1, and therefore, the test scheme that the temperature of the gas pumped by the pump 32 is inconsistent with the ambient temperature around the pump 32 can be carried out.

In this embodiment, preferably, an air storage tank 10 is arranged in the temperature box 1, the in-box air inlet pipeline 4 and the out-box air inlet pipeline 2 are both communicated with an air inlet of the air storage tank 10, and an inlet of the test pipeline 31 is communicated with an air outlet of the air storage tank 10. When the in-box air inlet valve 6 or the out-box air inlet valve 9 is opened, the gas input from the in-box air inlet pipeline 4 or the out-box air inlet pipeline 2 firstly enters the gas storage tank 10, and then is output from the gas outlet of the gas storage tank 10 to enter the test pipeline 31. The gas pumped by the pump 32 can be stabilized and stored by the gas tank 10. Preferably, the air storage tank 10 may be provided with two air inlets, which are respectively connected to the in-tank air inlet pipeline 4 and the out-tank air inlet pipeline 2.

Further, the gas storage tank 10 may be provided with a gas storage tank pressure measuring part 11 and a gas storage tank temperature measuring part 12, the gas storage tank pressure measuring part 11 is used for detecting the pressure inside the gas storage tank 10, and the gas storage tank temperature measuring part 12 is used for detecting the temperature inside the gas storage tank 10, so that the detection and monitoring of the pressure and the temperature of the gas inside the gas storage tank 10 can be realized. Preferably, the tank pressure measuring device 11 may employ a pressure sensor, and the tank temperature measuring device 12 may employ a temperature sensor.

In this embodiment, the test pipeline 3 preferably further includes an inlet valve 33 and an outlet valve 34 disposed on the test pipeline 31, the inlet valve 33 and the outlet valve 34 are respectively disposed on the inlet side and the outlet side of the pump 32, and the opening and closing of the test pipeline 31 is controlled by the opening and closing of the inlet valve 33 and the outlet valve 34. Preferably, the inlet valve 33 and the outlet valve 34 may be both hand valves.

In this embodiment, the test line 3 preferably further includes an inlet pressure measuring part 35 and an outlet pressure measuring part 36 for detecting the pressure in the test pipe 31, and an inlet temperature measuring part 37 and an outlet temperature measuring part 38 for detecting the temperature in the test pipe 31. An inlet pressure measuring part 35 and an outlet pressure measuring part 36 are respectively located on the inlet side and the outlet side of the pump 32, and are used for respectively detecting the inlet side pressure and the outlet side pressure of the pump 32; the inlet temperature measuring unit 37 and the outlet temperature measuring unit 38 are respectively disposed on the inlet side and the outlet side of the pump 32 for respectively detecting the temperature on the inlet side and the outlet side of the pump 32, thereby allowing the detection and monitoring of the operating pressure and the temperature of the pump 32. Preferably, the inlet pressure measuring part 35 and the outlet pressure measuring part 36 may each employ a pressure sensor, and the inlet temperature measuring part 37 and the outlet temperature measuring part 38 may each employ a temperature sensor.

In this embodiment, the test pipeline 3 preferably further includes an adjusting valve 39 disposed on the test pipeline 31, and the flow rate of the test pipeline 31, that is, the flow rate of the pump 32, can be adjusted by controlling the opening of the adjusting valve 39. Preferably, the regulating valve 39 may be a Pulse Width Modulation (PWM) proportional valve.

In this embodiment, preferably, the plurality of test pipelines 3 may be provided, and the plurality of test pipelines 3 are connected in parallel, so that a test on the plurality of pumps 32 can be performed simultaneously, and the test efficiency is improved. The number of the test pipelines 3 is not limited, and may be designed according to actual needs, for example, in the present embodiment, eight test pipelines 3 are connected in parallel, and each test pipeline 3 includes a test pipeline 31, and an inlet valve 33, an inlet pressure measuring part 35, an inlet temperature measuring part 37, a pump 32, an outlet temperature measuring part 38, an outlet pressure measuring part 36, an outlet valve 34, and a regulating valve 39 which are sequentially connected in series on the test pipeline 31. Correspondingly, the gas storage tank 10 is provided with eight gas outlets which are respectively communicated with inlets of the test pipelines 31 in the eight test pipelines 3, outlets of the test pipelines 31 in the eight test pipelines 3 are respectively communicated with the gas outlet pipeline 5, and all the test pipelines 31 are positioned at the upstream of the gas outlet valve 7 on the gas outlet pipeline 5, so that gas in all the test pipelines 31 is firstly converged into the gas outlet pipeline 5 and then is discharged through the gas outlet valve 7.

In this embodiment, the in-tank air intake valve 6 is preferably a three-way air intake valve, and three ports of the three-way air intake valve respectively open to the inlet of the test pipe 31, the internal space of the temperature tank 1, and the outside of the temperature tank 1. The inlet of the test pipeline 31 can be communicated or blocked with the inner space of the temperature box 1 and the inlet of the test pipeline 3 can be communicated or blocked with the outer part of the temperature box 1 by adjusting the working state of the three-way air inlet valve, so that different air flow routes can be selected according to the requirements of test schemes.

In this embodiment, preferably, the air outlet valve 7 is a three-way air outlet valve 7, and three ports of the three-way air outlet valve 7 are respectively connected to the outlet of the test pipeline 31, the internal space of the temperature box 1 and the outside of the temperature box 1. The outlet of the test pipeline 31 can be communicated or blocked with the inner space of the temperature box 1 and the outlet of the test pipeline 31 can be communicated or blocked with the outer part of the temperature box 1 by adjusting the working state of the three-way outlet valve 7, so that different air flow routes can be selected according to the requirements of test schemes.

In this embodiment, the outside air intake valve 9 on the outside air intake duct 2 may preferably be a proportional valve with an adjustable opening, such as a Pulse Width Modulation (PWM) proportional valve, and the flow rate of the outside air intake duct 2 may be controlled by adjusting the opening of the outside air intake valve 9. Preferably, the outside air intake valve 9 is disposed downstream of the heater 8, and the gas heated by the heater 8 enters the gas storage tank 10 through the outside air intake valve 9.

In this embodiment, preferably, the outside-tank temperature measuring device 13 for detecting the temperature inside the outside-tank air inlet duct 2 is disposed on the outside-tank air inlet duct 2, and the outside-tank temperature measuring device 13 is disposed at the downstream of the heater 8 and is used for detecting the outlet temperature of the heater 8, that is, the temperature of the gas heated by the heater 8 inside the outside-tank air inlet duct 2 is detected, so that the temperature of the gas heated by the heater 8 inside the outside-tank air inlet duct 2 can be detected and monitored. Preferably, the outside temperature measuring unit 13 may employ a temperature sensor.

In this embodiment, the pump 32 to be tested is driven by a power supply, which may be a programmable power supply, and may input different voltages and currents to the pump 32 according to the requirements of the test scheme.

The testing equipment of the carbon tank cleaning pump of the embodiment can also comprise a control system, the pump 32, a power supply for driving the pump 32, the temperature box 1, the heater 8, the in-box air inlet valve 6, the out-box air inlet valve 9, the regulating valve 39, the air outlet valve 7, the air storage tank pressure measuring part 11, the air storage tank temperature measuring part 12, the inlet pressure measuring part 35, the outlet pressure measuring part 36, the inlet temperature measuring part 37, the outlet temperature measuring part 38 and the out-box temperature measuring part 13 are all connected with the control system, the control system collects the detection information of the measuring parts and adjusts and controls the working states of the equipment parts according to the requirements of a testing scheme, and therefore automatic control of the testing process of the testing equipment can be achieved. Specifically, the control system edits a corresponding temperature curve of the temperature box 1 according to the test scheme, and controls the temperature in the temperature box 1 in real time according to the temperature curve; the control system controls the heating temperature of the warmer 8 according to the test scheme to realize the specified temperature of the gas pumped by the pump 32; the control system collects the running state information of the pump 32 in real time, wherein the running state information comprises voltage and current information, rotating speed information and the like of the pump 32, monitors the running state of the pump 32, and controls the voltage input from the power supply to the pump 32 and the rotating speed of the pump 32 according to the collected running state information, so that the running state of the pump 32 meets the requirements of a test scheme; the control system controls the opening and closing states of the in-box air inlet valve 6, the out-box air inlet valve 9, the regulating valve 39 and the air outlet valve 7 according to the test scheme to realize a required air flow path; the control system collects the pressure information in the air storage tank 10 detected by the air storage tank pressure measuring device 11, the temperature information in the air storage tank 10 detected by the air storage tank temperature measuring device 12, the pressure information at the inlet side of the pump 32 detected by the inlet pressure measuring device 35, the pressure information at the outlet side of the pump 32 detected by the outlet pressure measuring device 36, the temperature information at the inlet side of the pump 32 detected by the inlet temperature measuring device 37, the temperature information at the outlet side of the pump 32 detected by the outlet temperature measuring device 38 and the gas temperature information heated by the warmer 8 in the air inlet pipeline 2 outside the box detected by the air temperature measuring device 13 in real time, controls the heating temperature of the warmer 8 in the temperature box 1 according to the collected temperature information to ensure that the temperature of the collection point of each temperature measuring device meets the requirement of a test scheme, and controls the opening degree of the regulating valve 39 and the air inlet valve 9 outside the box according to the collected pressure information, and the pressure of the collection point where each pressure measuring piece is positioned meets the requirements of the test scheme.

Further, referring to fig. 1, the control system may include a controller C and a LIN control module P, which are independent from each other. The temperature box 1, the warmer 8, the in-box air inlet valve 6, the out-box air inlet valve 9, the regulating valve 39, the air outlet valve 7, the air storage tank pressure measuring part 11, the air storage tank temperature measuring part 12, the inlet pressure measuring part 35, the outlet pressure measuring part 36, the inlet temperature measuring part 37, the outlet temperature measuring part 38 and the out-box temperature measuring part 13 are all connected with the controller C, the controller C collects detection information of the measuring parts, and the working states of the temperature box 1, the warmer 8, the in-box air inlet valve 6, the out-box air inlet valve 9, the regulating valve 39 and the air outlet valve 7 are regulated and controlled. The form of the controller C is not limited, and an existing controller, such as a PLC controller or a single chip microcomputer, may be used. The pump 32 and the power supply for driving the pump 32 are connected to the LIN control module P, and the LIN control module P collects the operation state information of the pump 32 and adjusts and controls the operation state of the pump 32. The LIN control module P is prior art and will not be described herein.

Taking a specific testing scheme as an example, the durability and life test of the pump 32 by using the testing apparatus of the canister purge pump of the present embodiment may sequentially include the following steps:

firstly, an inlet valve 33 and an outlet valve 34 are both opened, a controller C controls the temperature in a temperature box 1 to be 20 ℃, an air inlet valve 9 outside the temperature box is closed, a warmer 8 is closed, an air inlet valve 6 inside the temperature box is opened, an air inlet of an air storage tank 10 is communicated with the inner space of the temperature box 1, an adjusting valve 39 is opened, an air outlet valve 7 is opened, an air outlet pipeline 5 is communicated with the inner space of the temperature box 1, therefore, an in-box airflow loop of the pump 32 for pumping the gas in the temperature box 1 is formed, and a LIN control module P controls the pump 32 to be in a sleep mode.

And step two, on the basis of the step one, the controller C controls the temperature in the temperature box 1 to be reduced from 20 ℃ to 4 ℃.

And step three, on the basis of the step two, the controller C controls the temperature in the temperature box 1 to be increased to 40 ℃ from 4 ℃, and the LIN control module P controls the pump 32 to be switched to the running mode from the sleep mode.

And step four, on the basis of the step three, the controller C controls the temperature in the temperature box 1 to rise from 40 ℃ to 41 ℃, the air inlet valve 6 in the box is closed, the air inlet valve 9 outside the box is opened, the warmer 8 is opened, the gas entering the air inlet pipeline 2 outside the box is heated to 73 ℃, and the air outlet valve 7 is switched to enable the air outlet pipeline 5 to be communicated with the outside of the temperature box 1, so that an airflow loop for pumping the warmer 8 outside the temperature box 1 to heat the heated gas by the pump 32 is formed.

And step five, on the basis of the step four, the controller C controls the temperature in the temperature box 1 to be increased from 41 ℃ to 80 ℃.

And step six, on the basis of the step five, the controller C controls the temperature in the temperature box 1 to be increased from 80 ℃ to 90 ℃, and the heater 8 heats the gas entering the gas inlet pipeline 2 outside the box to 83 ℃.

And step seven, on the basis of the step six, the controller C controls the temperature in the temperature box 1 to be increased from 90 ℃ to 105 ℃.

And step eight, on the basis of the step seven, the controller C controls the temperature in the temperature box 1 to be reduced from 105 ℃ to 60 ℃, the heater 8 is closed, the gas entering the gas inlet pipeline 2 outside the box is stopped being heated, and the temperature of the gas pumped by the pump 32 is gradually reduced.

Step nine, on the basis of the step eight, the controller C controls the temperature in the temperature box 1 to be reduced from 60 ℃ to 20 ℃, the temperature of the gas pumped by the pump 32 is gradually reduced to the room temperature, and the LIN control module P controls the pump 32 to be switched from the running mode to the sleep mode.

And step ten, repeating the steps from the first step to the ninth step.

Therefore, the durability and service life test of the pump 32 by using the test equipment of the carbon tank cleaning pump of the embodiment can be completed.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. A test device for a carbon tank cleaning pump is characterized by comprising a temperature box (1) with adjustable internal temperature and an air inlet pipeline (2) arranged outside the temperature box (1), a test pipeline (3), an in-box air inlet pipeline (4), an air outlet pipeline (5), an in-box air inlet valve (6) arranged on the in-box air inlet pipeline (4) and an air outlet valve (7) arranged on the air outlet pipeline (5) are arranged in the temperature box (1), the test pipeline (3) comprises a test pipeline (31) and a pump (32) arranged on the test pipeline (31), the inlet and the outlet of the test pipeline (31) are respectively communicated with the air inlet pipeline (4) and the air outlet pipeline (5) in the box, the out-of-box air inlet duct (2) is communicated with the inlet of the test duct (31), and a warmer (8) and an external air inlet valve (9) are arranged on the external air inlet pipeline (2).

2. The testing equipment of the carbon tank cleaning pump according to claim 1, characterized in that a gas storage tank (10) is arranged in the temperature box (1), the in-box gas inlet pipeline (4) and the out-box gas inlet pipeline (2) are both communicated with a gas inlet of the gas storage tank (10), and an inlet of the testing pipeline (31) is communicated with a gas outlet of the gas storage tank (10).

3. The testing apparatus for a canister purge pump according to claim 2, wherein a canister pressure measuring part (11) for detecting the pressure inside the canister (10) and a canister temperature measuring part (12) for detecting the temperature inside the canister (10) are provided on the canister (10).

4. The test equipment of the canister purge pump according to claim 1, characterized in that the test line (3) further comprises an inlet valve (33) and an outlet valve (34) provided on the test pipe (31), the inlet valve (33) and the outlet valve (34) being located at an inlet side and an outlet side of the pump (32), respectively.

5. The test equipment of the canister purge pump according to claim 1, characterized in that the test line (3) further comprises an inlet pressure measuring piece (35) and an outlet pressure measuring piece (36) for detecting the pressure in the test pipe (31) and an inlet temperature measuring piece (37) and an outlet temperature measuring piece (38) for detecting the temperature in the test pipe (31), the inlet pressure measuring piece (35) and the outlet pressure measuring piece (36) being located at the inlet side and the outlet side of the pump (32), respectively; the inlet temperature measuring member (37) and the outlet temperature measuring member (38) are respectively located on an inlet side and an outlet side of the pump (32).

6. Testing device of a canister purge pump according to claim 1, characterized in that the test line (3) further comprises a regulating valve (39) provided on the test conduit (31).

7. The test equipment of the canister purge pump according to claim 1, wherein the test piping (3) is provided in plurality, and a plurality of the test piping (3) are connected in parallel.

8. Testing device of a canister purge pump according to claim 1, characterized in that the in-tank inlet valve (6) is a three-way inlet valve, the three ports of which open into the inlet of the test conduit (31), the internal space of the temperature tank (1) and the outside of the temperature tank (1), respectively.

9. The test equipment of the canister purge pump according to claim 1, characterized in that the outlet valve (7) is a three-way outlet valve (7), and three ports of the three-way outlet valve (7) are respectively open to the outlet of the test pipe (31), the inner space of the temperature tank (1), and the outside of the temperature tank (1).

10. The canister purge pump test apparatus according to claim 1, wherein an outside-tank temperature measuring piece (13) for detecting the temperature inside the outside-tank intake duct (2) is provided on the outside-tank intake duct (2) downstream of the warmer (8).

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