CN114382626A - Common rail valve test equipment - Google Patents

Common rail valve test equipment Download PDF

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Publication number
CN114382626A
CN114382626A CN202210166672.4A CN202210166672A CN114382626A CN 114382626 A CN114382626 A CN 114382626A CN 202210166672 A CN202210166672 A CN 202210166672A CN 114382626 A CN114382626 A CN 114382626A
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CN
China
Prior art keywords
common rail
valve
oil
rail valve
pipe
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CN202210166672.4A
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Chinese (zh)
Inventor
刘星宇
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China Shipbuilding Power Engineering Institute Co Ltd
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China Shipbuilding Power Engineering Institute Co Ltd
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Priority to CN202210166672.4A priority Critical patent/CN114382626A/en
Publication of CN114382626A publication Critical patent/CN114382626A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • 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
    • G01M13/003—Machine valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention belongs to the technical field of common rail valve detection, and discloses common rail valve test equipment which comprises a rack, and a test board, an oil delivery system, an oil supply system, a control system and detection equipment which are arranged on the rack, wherein the test board is used for installing a common rail valve, the oil delivery system comprises an oil inlet pipe, a bypass pipe and an oil return pipe which are communicated with an oil tank, the oil inlet pipe and the oil return pipe can be communicated when the common rail valve is opened, the oil inlet pipe and the bypass pipe can be communicated when the common rail valve is closed, the oil supply system can deliver oil to the oil inlet pipe, the control system comprises a valve control module for controlling the opening and closing of the common rail valve and an acquisition and calculation module for acquiring various detection signals of the common rail valve during the opening and closing, the acquisition and calculation module can generate test data, and the display equipment can receive and display the test data. The common rail valve testing equipment provided by the invention can integrate the tooling, control, signal acquisition, data measurement and calculation of the common rail valve and the result display, and further improves the detection efficiency of the common rail valve.

Description

Common rail valve test equipment
Technical Field
The invention relates to the technical field of common rail valve detection, in particular to a common rail valve testing device.
Background
The common rail valve is an important component on an engine, and important performance parameters such as opening and closing response time and opening and closing time of the common rail valve can influence the service performance of the whole engine. In the testing process of the common rail valve, external devices such as various oil pipelines, control devices for controlling the common rail valve to work, devices for detecting performance parameters of the common rail valve such as various sensors and measuring and calculating devices for calculating data of the measured performance parameters are needed, the testing device for the common rail valve in the prior art is poor in integration, and common rail valve testing devices integrating tooling, control, signal acquisition and data calculation are not provided, so that the equipment handling, equipment installation and detection operation processes of operators become more complicated, the detection efficiency is influenced, and the consumption of manpower and material resources is increased.
Disclosure of Invention
The invention aims to provide common rail valve testing equipment to solve the problems of poor integration and low testing efficiency of the common rail valve testing equipment in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a common rail valve testing apparatus comprising:
the device comprises a rack, a driving device and a control device, wherein the rack is provided with a test board for installing a common rail valve;
the common rail valve is communicated with the oil inlet pipe and the oil return pipe when the common rail valve is opened, and the common rail valve is communicated with the oil inlet pipe and the bypass pipe when the common rail valve is closed;
the oil supply system is arranged on the rack, is communicated with the oil tank and can convey oil to the oil inlet pipe;
the control system is arranged on the rack and comprises a valve control module and an acquisition and calculation module, the valve control module is in communication connection with the common rail valve and can control the common rail valve to be opened and closed, the acquisition and calculation module is in communication connection with the common rail valve and the valve control module respectively, and the acquisition and calculation module can acquire various detection signals of the common rail valve in the switching process between the opening and the closing and calculate and generate test data according to the detection signals;
and the display equipment is arranged on the rack and is in communication connection with the acquisition and calculation module, and the display equipment can receive and display the test data.
Optionally, a mounting rack is arranged on the test board, the common rail valve is arranged on the mounting rack, a mounting hole is formed in the common rail valve, a connecting hole is correspondingly formed in the mounting rack, and the mounting hole is connected with the connecting hole through a connecting piece.
Optionally, the connecting hole is provided with an internal thread, the connecting piece is correspondingly provided with an external thread, and the connecting piece is screwed with the connecting hole after penetrating through the mounting hole.
Optionally, still be provided with the diverter valve in the frame, return oil pipe's both ends and connect respectively the common rail valve with the diverter valve, the diverter valve is connected with first oil pipe and second oil pipe, first oil pipe with the second oil pipe all with the oil tank intercommunication, be provided with the back pressure valve on the second oil pipe, the diverter valve can switch between first state and second state, works as the diverter valve is located when the first state, the diverter valve intercommunication return oil pipe with first oil pipe, works as the diverter valve is located when the second state, the diverter valve intercommunication return oil pipe with the second goes out oil pipe.
Optionally, the oil return back pressure of the back pressure valve is set to 25 bar.
Optionally, the collecting and calculating module includes a pressure collecting and calculating module, and the pressure collecting and calculating module is capable of collecting a pressure signal of the oil return pipe during switching of the common rail valve between opening and closing, and calculating and generating a response time and a completion time of switching of the common rail valve between opening and closing according to the pressure signal.
Optionally, the acquisition and calculation module includes a current acquisition and calculation module, and the current acquisition and calculation module is capable of acquiring a driving current signal during switching of the common rail valve between opening and closing, and calculating and generating a response time and a completion time of switching of the common rail valve between opening and closing according to the driving current signal.
Optionally, the collecting and calculating module includes a voltage collecting and calculating module, and the voltage collecting and calculating module is capable of collecting a driving voltage signal during switching of the common rail valve between opening and closing, and calculating and generating a response time and a completion time of switching of the common rail valve between opening and closing according to the driving voltage signal.
Optionally, a cooling system is further disposed on the rack, and the cooling system can cool the oil in the oil inlet pipe, the bypass pipe, and the oil return pipe. Optionally, the display device further includes a printing module, and the printing module is capable of printing the test data.
Has the advantages that:
the invention provides common rail valve installation equipment, wherein a rack is provided with a test board for installing a common rail valve, and is also provided with an oil delivery system, an oil supply system, a control system and display equipment, the common rail valve is installed on the test board through the oil delivery system, an oil inlet pipe, a bypass pipe and an oil return pipe are respectively connected with the common rail valve, the common rail valve can simulate the installation environment on an engine, the common rail valve has two working states of opening and closing, when the common rail valve is in the closing state, the common rail valve is communicated with the oil inlet pipe and the bypass pipe, oil in an oil tank is delivered to the oil inlet pipe through the oil supply system and then returned to the oil tank through the bypass pipe, namely the oil does not flow through the common rail valve, when the common rail valve is in the opening state, the common rail valve is communicated with the oil inlet pipe and the oil return pipe, the oil in the oil tank is delivered to the oil inlet pipe through the oil supply system and then returned to the oil tank through the oil return pipe, namely the oil returns to the oil tank after flowing through the common rail valve, the control system comprises a valve control module and an acquisition and calculation module, wherein the valve control module can control the opening and closing of the common rail valve to control the working state of the common rail valve, the acquisition and calculation module can acquire various detection signals of the common rail valve in the opening and closing switching process and generate test data, the display device is in communication connection with the acquisition and calculation module to receive the test data and display the test data, the final test result is informed to an operator, the whole detection process can be integrated with equipment tools of the common rail valve, the working condition is switched, the signal is acquired, the data is measured and calculated and the result is displayed integrally, the test device is highly integrated, the operation process is more convenient, and the detection efficiency of the common rail valve is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a common rail valve testing apparatus of the present invention;
FIG. 2 is a schematic diagram of the common rail valve testing apparatus of the present invention from another perspective;
FIG. 3 is a schematic structural diagram of the test bed and the switching valve of the present invention;
FIG. 4 is a schematic structural diagram of a testing table according to the present invention.
In the figure:
100. a frame; 110. an oil inlet pipe; 120. a bypass pipe; 130. an oil return pipe; 140. a test bench; 141. an oil inlet; 142. a bypass port; 143. an oil outlet; 144. a mounting frame; 1441. connecting holes; 150. a connecting member;
200. a common rail valve; 300. an oil supply system; 400. a control system; 500. a display device;
600. a switching valve; 610. a first oil outlet pipe; 620. a second oil outlet pipe; 630. a back pressure valve;
700. a cooling system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a common rail valve testing device, referring to fig. 1 to 4, the common rail valve testing device includes a rack 100, a testing platform 140 for installing a common rail valve 200 is disposed on the rack 100, an oil delivery system, an oil supply system 300, a control system 400 and a display device 500 are further disposed on the rack 100, the oil delivery system includes an oil inlet pipe 110, a bypass pipe 120 and an oil return pipe 130 sequentially communicated with an oil tank (the oil tank is not identified in the figures), the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130 can all be connected with the common rail valve 200, when the common rail valve 200 is opened, the common rail valve 200 communicates the oil inlet pipe 110 and the oil return pipe 130, and when the common rail valve 200 is closed, the common rail valve 200 communicates the oil inlet pipe 110 and the bypass pipe 120; the oil supply system 300 is communicated with an oil tank and can deliver oil to the oil inlet pipe 110; the control system 400 comprises a valve control module, an acquisition and calculation module, wherein the valve control module is in communication connection with the common rail valve 200 and can control the opening and closing of the common rail valve 200, the acquisition and calculation module is in communication connection with the common rail valve 200 and the valve control module respectively, and the acquisition and calculation module can acquire various detection signals in the switching process of the common rail valve 200 between the opening and the closing and calculate and generate test data according to the detection signals; the display device 500 is disposed on the rack 100 and is in communication with the collection and calculation module, and the display device 500 can receive and display the test data.
In this embodiment, by providing an oil delivery system, after the common rail valve 200 is installed on the test platform 140, the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130 are respectively connected to the common rail valve 200, so as to simulate an installation environment on an engine for the common rail valve 200, the common rail valve 200 has two working states of opening and closing, when the common rail valve 200 is closed, the common rail valve 200 communicates the oil inlet pipe 110 and the bypass pipe 120, oil in the oil tank is delivered to the oil inlet pipe 110 through the oil supply system 300 and then returns to the oil tank through the bypass pipe 120, that is, the oil does not flow through the common rail valve 200, when the common rail valve 200 is in the opening state, the common rail valve 200 communicates the oil inlet pipe 110 and the oil return pipe 130, and oil in the oil tank is delivered to the oil inlet pipe 110 through the oil supply system 300 and then returns to the oil tank through the oil return pipe 130, that is, and then returns to the oil tank after flowing through the common rail valve 200; the control system 400 comprises a valve control module and an acquisition and calculation module, wherein the valve control module can control the opening and closing of the common rail valve 200 and further control the action state of the common rail valve 200, the acquisition and calculation module can acquire various detection signals of the common rail valve 200 in the opening and closing switching process and generate test data, and the display device 500 is in communication connection with the acquisition and calculation module to receive the test data and display the test data so as to inform an operator of a final test result and further complete a completed test process. Whole testing process can collect equipment frock, the operating mode of common rail valve 200 and switch, signal acquisition, data are calculated and the result shows in an organic whole, makes test equipment highly integrated, makes the operation process more convenient, also further promotes common rail valve 200's detection efficiency.
In this embodiment, the oil supply system 300 may be an oil pump or other oil supply equipment, and is not limited herein. In addition, the control principle and process of the valve control module for controlling the opening and closing of the common rail valve 200 are the prior art, and are not described herein in detail.
Specifically, referring to fig. 3 to 4, the test bench 140 is respectively provided with an oil inlet 141, a bypass port 142 and an oil outlet 143, and when the common rail valve 200 is installed on the test bench 140, the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130 are respectively correspondingly provided with the oil inlet 141, the bypass port 142 and the oil outlet 143 and then connected to the common rail valve 200. Further, the test platform 140 is provided with a mounting frame 144, the common rail valve 200 is arranged on the mounting frame 144, the common rail valve 200 is provided with a mounting hole, the mounting frame 144 is correspondingly provided with a connecting hole 1441, and the mounting hole and the connecting hole 1441 are connected through the connecting member 150. In this embodiment, the installation space is provided for the common rail valve 200 by the installation of the installation frame 144, the common rail valve 200 is placed on the installation frame 144, the installation hole on the common rail valve 200 and the connection hole 1441 on the installation frame 144 can be correspondingly arranged, and then the connection member 150 is reliably connected with the connection hole 1441 after penetrating through the installation hole, so that the common rail valve 200 is simply and reliably installed on the installation frame 144. Preferably, the connection hole 1441 is provided with an internal thread, the connection member 150 is correspondingly provided with an external thread, the connection member 150 is screwed with the connection hole 1441 after penetrating through the installation hole, in this embodiment, the connection member 150 may be a bolt adapted to the aperture specification of the connection hole 1441, so as to realize reliable connection between the common rail valve 200 and the installation frame 144. The present embodiment is not limited thereto, and the common rail valve 200 may be securely mounted with the mounting bracket 144 in other manners, which are not limited herein.
In this embodiment, as shown in fig. 1 to 3, a switching valve 600 is further disposed on the frame 100, the common rail valve 200 and the switching valve 600 are respectively connected to two ends of the oil return pipe 130, the switching valve 600 is connected to a first oil outlet pipe 610 and a second oil outlet pipe 620, both the first oil outlet pipe 610 and the second oil outlet pipe 620 are communicated with the oil tank, a back pressure valve 630 is disposed on the second oil outlet pipe 620, the switching valve 600 can be switched between a first state and a second state, when the switching valve 600 is in the first state, the switching valve 600 communicates the oil return pipe 130 with the first oil outlet pipe 610, and when the switching valve 600 is in the second state, the oil return pipe 130 communicates with the second oil outlet pipe 620.
The common rail valve 200 mainly includes two types, namely a monostable valve and a bistable valve, and the common rail valve testing device provided by the embodiment can be suitable for testing both the monostable valve and the bistable valve. Specifically, when the device is used for testing a monostable valve, the monostable valve is mounted on the mounting frame 144, then the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130 are respectively connected with the monostable valve, an operator controls the switching valve 600 to switch the switching valve 600 into a first state, the switching valve 600 is communicated with the oil return pipe 130 and the first oil outlet pipe 610 in the first state, when the monostable valve is opened and the switching valve 600 is in the first state, oil in the oil tank is delivered to the oil inlet pipe 110 through the oil supply system 300 and then flows through the oil return pipe 130 and the first oil outlet pipe 610 to return to the oil tank, and under the arrangement, the return back pressure of the part of oil way of the first oil outlet pipe 610 can be kept at 0bar, so that the testing requirement on the monostable valve is met; when the testing device is used for testing the bistable valve, the bistable valve is installed on the installation frame 144, then the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130 are respectively connected with the bistable valve, an operator controls the switching valve 600 to switch the switching valve 600 into the second state, the switching valve 600 is communicated with the oil return pipe 130 and the second oil outlet pipe 620 in the second state, when the bistable valve is opened and the switching valve 600 is in the second state, oil in the oil tank is conveyed to the oil inlet pipe 110 through the oil supply system 300 and then flows through the oil return pipe 130 and the second oil outlet pipe 620 to return to the oil tank, and through the arrangement of the back pressure valve 630, the back pressure valve 630 can set the oil return back pressure of the part of oil circuit of the second oil outlet pipe 620 to be a fixed value meeting the testing requirements, so that the testing requirements on the bistable valve are met.
Further, the oil return back pressure of the back pressure valve 630 is preferably set to 25bar, so that the test requirements for the bistable valve can be further satisfied.
In this embodiment, the collecting and calculating module includes a pressure collecting and calculating module, and the pressure collecting and calculating module is capable of collecting a pressure signal of the oil return pipe 130 during the switching process of the common rail valve 200 between the opening and the closing, and calculating and generating a response time and a completion time of the switching process of the common rail valve 200 between the opening and the closing according to the pressure signal.
In this embodiment, the pressure signal of the oil return pipe is one of the detection signals that need to be collected during the switching process of the common rail valve 200 between opening and closing, and the response time and the completion time of the switching process of the common rail valve 200 between opening and closing are correspondingly calculated according to the change of the pressure signal of the oil return pipe 130 during the switching process of the common rail valve 200 between opening and closing.
Specifically, the response time includes a valve-opening response time and a valve-closing response time of the common rail valve 200, and the completion time includes a valve-opening completion time and a valve-closing completion time of the common rail valve 200. The connecting part of the oil return pipe 130 and the common rail valve 200 is provided with a pressure sensor which is in communication connection with a pressure acquisition and calculation module, the pressure sensor can acquire a pressure signal at the connecting part of the oil return pipe 130 and the common rail valve 200 and send the pressure signal to the pressure acquisition and calculation module in real time, a built-in program in the pressure acquisition and calculation module records two pressure values, one of the pressure values is P1Another pressure value is P corresponding to the valve-opening response node of the common rail valve 2002Corresponding to the valve opening completion node of the common rail valve 200.
When the common rail valve 200 is in a closed state, the common rail valve 200 communicates the oil inlet pipe 110 and the bypass pipe 120, that is, an oil path between the oil inlet pipe 110 and the bypass pipe 120 is conducted, no oil passes through the oil return pipe 130, and a pressure signal value measured by the pressure sensor is 0. When the valve control module sends a valve opening signal to the common rail valve 200, the pressure acquisition and calculation module can record the time node T of the valve control module sending the valve opening signal0The common rail valve 200 switches the operation state after receiving the valve opening signal, that is, switches the state of controlling the communication between the oil inlet pipe 110 and the bypass pipe 120 to the state of communicating between the oil inlet pipe 110 and the oil return pipe 130. Along with the process that the common rail valve 200 is gradually opened, as the oil inlet pipe 110 is gradually communicated with the oil return pipe 130, the pressure at the oil return pipe 130 is gradually increased, and in the process, the pressure sensor also sends a pressure signal to the pressure acquisition and calculation module in real time, and when the value of the pressure signal measured by the pressure sensor is increased from 0 to P1In time, the pressure acquisition and calculation module can record the pressure signal value reaching P1Time node T of1And according to time node T0And time node T1The time interval therebetween calculates the valve opening response time of the common rail valve 200. With the common rail valve 200 continuing to open, the pressure at the oil return pipe 130 also continues to rise, and when the pressure signal measured by the pressure sensor rises to P2In time, the pressure acquisition and calculation module can record the pressure signal value reaching P2Time node T of2And according to time node T0And time node T2The time interval therebetween calculates the valve opening completion time of the common rail valve 200.
The built-in program in the pressure acquisition and calculation module also records a pressure value P1Corresponding to the closing valve response node of the common rail valve 200. When the common rail valve 200 is in an open state, the common rail valve 200 communicates the oil inlet pipe 110 and the oil return pipe 130, and the value of the pressure signal measured by the pressure sensor is P2. When the valve control module sends a valve closing signal to the common rail valve 200, the pressure acquisition and calculation module can record the time node T when the valve control module sends the valve closing signal0The common rail valve 200 is switched in operation state, that is, in a state where the communication between the inlet pipe 110 and the return pipe 130 is controlled, to a state where the inlet pipe 110 and the bypass pipe 120 are communicated, upon receiving the valve closing signal. Along with the gradual closing of the common rail valve 200, the oil inlet pipe 110 and the oil return pipe 130 are gradually cut off, the pressure at the oil return pipe 130 is gradually reduced, the pressure sensor also sends a pressure signal to the pressure acquisition and calculation module in real time in the process, and when the pressure signal value measured by the pressure sensor is P2Down to P1At time, the pressure acquisition calculation module can record the pressure signal value reaching P1Time node T of1And according to time node T0' and time node T1The time interval between' ″ calculates the valve closing response time of the common rail valve 200. The pressure at the oil return pipe 130 continuously decreases with the continuous closing of the common rail valve 200, and when the pressure signal value measured by the pressure sensor decreases to 0, the pressure acquisition and calculation module can record the time node T when the pressure signal value reaches 02And according to time node T0' and time node T2The time interval between' ″ calculates the closing completion time of the common rail valve 200.
The valve opening response time, the valve opening completion time, the valve closing response time, and the valve closing completion time are test data required in several items of the common rail valve 200 test, and can effectively reflect the usability of the common rail valve 200. Preferably, in the present embodiment, P1Is preferably set to a value of 10bar, P2Is preferably set to a value of 200bar, P1The value of' ″ is preferably set to 180 bar.
Further, the acquisition and calculation module comprises a current acquisition and calculation module, and the current acquisition and calculation module can acquire a driving current signal during the switching process of the common rail valve 200 between opening and closing, and calculate and generate the response time and the completion time of the switching process of the common rail valve 200 between opening and closing according to the driving current signal.
Specifically, the driving current signal is also one of the detection signals that need to be collected during the switching process of the common rail valve 200 between opening and closing, and the response time and the completion time of the switching process of the common rail valve 200 are correspondingly calculated according to the change of the driving current signal during the switching process of the common rail valve 200 between opening and closing.
The common rail valve 200 is provided with a current sensor in communication connection with the current acquisition and calculation module, the current sensor can acquire a driving current signal of the common rail valve 200 and send the driving current signal to the current acquisition and calculation module in real time, a built-in program in the current acquisition and calculation module records three current values, and one current value is I1Corresponding to the valve-opening response node of the common rail valve 200; a current value of I2A valve opening completion node corresponding to the common rail valve 200; a current value of I1Corresponding to the closing valve response node of the common rail valve 200.
When the common rail valve 200 is in the closed state, no oil passes through the oil return pipe 130, and the value of the driving current signal measured by the current sensor is 0. When the valve control module sends a valve opening signal to the common rail valve 200, the current collection and calculation module can record the time node T of the valve control module sending the valve opening signalA0When the common rail valve 200 receives the valve opening signal and then switches the working state, the oil inlet pipe 110 and the oil return pipe 130 are gradually communicated, the driving current of the common rail valve 200 is gradually increased, and when the value of the driving current signal measured by the current sensor is increased from 0 to I1In time, the current acquisition and calculation module can record the value of the driving current signal reaching I1Time node T ofA1And according to time node TA0And time node TA1The time interval therebetween calculates the valve opening response time of the common rail valve 200. When the value of the pressure signal measured by the pressure sensor increases to I as the common rail valve 200 continues to open2In time, the current acquisition and calculation module can record the value of the driving current signal reaching I2Time node T ofA2And according to time node TA0And time node TA2The time interval therebetween calculates the valve opening completion time of the common rail valve 200; when the common rail valve 200 is in an open state, the common rail valve 200 is connected to the oil inlet pipe 110 and the oil return pipe 130, and the value of the driving current signal measured by the current sensor is I2. When the valve control module sends a valve closing signal to the common rail valve 200, the current collection and calculation module can record the time node T of the valve control module sending the valve closing signalA0The common rail valve 200 performs the switching of the operation state after receiving the valve closing signal, the common rail valve 200 is gradually closed, the oil inlet pipe 110 and the oil return pipe 130 are gradually cut off, the driving current of the common rail valve 200 is also gradually reduced, and when the value of the driving current signal measured by the current sensor is I2Is reduced to I1At time, the current collection calculation module can record the value of the drive current signal as reaching I1Time node T ofA1And according to time node TA0' and time node TA1The time interval between' ″ calculates the valve closing response time of the common rail valve 200. With the continuous closing of the common rail valve 200, the driving current is continuously reduced, and when the driving current signal value measured by the current sensor is reduced to 0, the current acquisition and calculation module can record the time node T when the driving current signal value reaches 0A2And according to time node TA0' and time node TA2The time interval between' ″ calculates the closing completion time of the common rail valve 200.
Further, the collecting and calculating module comprises a voltage collecting and calculating module, and the voltage collecting and calculating module can collect a driving voltage signal during the switching process of the common rail valve 200 between the opening and the closing, and calculate and generate the response time and the completion time of the switching process of the common rail valve 200 between the opening and the closing according to the driving voltage signal.
Specifically, the driving voltage signal is also one of the detection signals that need to be collected during the switching process of the common rail valve 200 between opening and closing, and the response time and the completion time of the switching process of the common rail valve 200 are correspondingly calculated according to the change of the driving voltage signal during the switching process of the common rail valve 200 between opening and closing.
Be provided with the voltage sensor who is connected with voltage acquisition computing module communication on the common rail valve 200, voltage sensor can gather the driving voltage signal of common rail valve 200 to send driving voltage signal to voltage acquisition computing module in real time, the built-in procedure in the voltage acquisition computing module has recorded three voltage value, and a voltage value is U1Corresponding to the valve-opening response node of the common rail valve 200; a voltage value of U2A valve opening completion node corresponding to the common rail valve 200; a voltage value of U1Corresponding to the closing valve response node of the common rail valve 200.
When the common rail valve 200 is in the closed state, no oil passes through the oil return pipe 130, and the value of the driving voltage signal measured by the voltage sensor is 0. When the valve control module sends a valve opening signal to the common rail valve 200, the voltage acquisition and calculation module can record the time node T of the valve control module sending the valve opening signalB0When the common rail valve 200 receives the valve opening signal and then switches the working state, the oil inlet pipe 110 and the oil return pipe 130 are gradually communicated, the driving voltage of the common rail valve 200 is gradually increased, and when the value of the driving voltage signal measured by the voltage sensor is increased from 0 to U1In time, the voltage acquisition and calculation module can record the value of the driving voltage signal reaching U1Time node T ofB1And according to time node TB0And time node TB1The time interval therebetween calculates the valve opening response time of the common rail valve 200. When the value of the pressure signal measured by the pressure sensor increases to U as the common rail valve 200 continues to open2In time, the voltage acquisition and calculation module can record the value of the driving voltage signal reaching U2Time node T ofB2And according to time node TB0And time node TB2The time interval therebetween calculates the valve opening completion time of the common rail valve 200; when the common rail valve 200 is in the open state, the common rail valve 200The oil inlet pipe 110 and the oil return pipe 130 are communicated, and the value of the driving voltage signal measured by the voltage sensor is U2. When the valve control module sends a valve closing signal to the common rail valve 200, the voltage acquisition and calculation module can record the time node T of the valve control module sending the valve closing signalB0After receiving the valve closing signal, the common rail valve 200 switches its operating state, and as the common rail valve 200 is gradually closed, the oil inlet pipe 110 and the oil return pipe 130 are gradually cut off, and the driving voltage of the common rail valve 200 is gradually decreased, and when the value of the driving voltage signal measured by the voltage sensor is changed from U2Down to U1At time, the voltage acquisition calculation module can record that the value of the driving voltage signal reaches U1Time node T ofB1And according to time node TB0' and time node TB1The time interval between' ″ calculates the valve closing response time of the common rail valve 200. With the continuous closing of the common rail valve 200, the driving voltage is continuously reduced, and when the driving voltage signal value measured by the voltage sensor is reduced to 0, the voltage acquisition and calculation module can record the time node T when the driving voltage signal value reaches 0B2And according to time node TB0' and time node TB2The time interval between' ″ calculates the closing completion time of the common rail valve 200.
In this embodiment, the display device 500 is in communication connection with the collecting and calculating module, the display device 500 includes a display screen, the display screen can display the received test data, and the test data such as the valve opening response time, the valve opening completion time, the valve closing response time, and the valve closing completion time calculated and generated in the collecting and calculating module can be sent to the display device 500 and displayed on the display screen for the operator to observe. Further, the display device 500 further includes a printing module, and the printing module can print the test data. Through setting up print module, print module can print test data such as open valve response time, open valve finish time, closed valve response time and closed valve finish time with the generation experiment report to supply operating personnel to use. The printing principle and the printing process of the printing module are the prior art, and are not described herein in any greater detail.
Preferably, as shown in fig. 1 to 2, the lower end of the rack 100 is provided with a plurality of casters, and the casters are arranged to facilitate an operator to move the common rail valve testing apparatus as a whole.
Further, a cooling system 700 is disposed on the rack 100, and the cooling system 700 can cool the oil in the oil inlet pipe 110, the bypass pipe 120, and the oil return pipe 130. In the testing process of the common rail valve 200, a certain requirement is required for the temperature of oil, by arranging the cooling system 700, the cooling system 700 preferably comprises a plurality of cooling pipelines which are respectively and correspondingly arranged beside the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130, cooling liquid is arranged in the cooling pipelines, and the cooling liquid can exchange heat with the oil in the oil inlet pipe 110, the bypass pipe 120 and the oil return pipe 130 correspondingly in the testing process, so that the overhigh temperature of the oil is avoided, and the stable performance of the testing process is ensured.
Further, an oil heating device is further arranged on the machine frame 100, and when the common rail valve testing device is just started, the temperature of oil in the oil tank is low, and the testing condition of the common rail valve 200 is not met. Through setting up fluid heating device, can heat up the fluid in the oil tank to test temperature fast after the common rail valve test equipment starts, and then can guarantee going on of test work.
It is worth mentioning that in the present embodiment, the working temperature of the oil during the test of the common rail valve 200 is preferably controlled within a range of 17 ℃ to 25 ℃.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A common rail valve testing apparatus, comprising:
a frame (100) provided with a test bench (140) for mounting a common rail valve (200);
the oil conveying system is arranged on the rack (100) and comprises an oil inlet pipe (110), a bypass pipe (120) and an oil return pipe (130) which are sequentially communicated with an oil tank, the oil inlet pipe (110), the bypass pipe (120) and the oil return pipe (130) can be connected with the common rail valve (200), when the common rail valve (200) is opened, the common rail valve (200) is communicated with the oil inlet pipe (110) and the oil return pipe (130), and when the common rail valve (200) is closed, the common rail valve (200) is communicated with the oil inlet pipe (110) and the bypass pipe (120);
the oil supply system (300) is arranged on the rack (100), is communicated with the oil tank and can convey oil to the oil inlet pipe (110);
the control system (400) is arranged on the rack (100), the control system (400) comprises a valve control module and an acquisition and calculation module, the valve control module is in communication connection with the common rail valve (200) and can control the common rail valve (200) to be opened and closed, the acquisition and calculation module is in communication connection with the common rail valve (200) and the valve control module respectively, and the acquisition and calculation module can acquire various detection signals of the common rail valve (200) in the switching process between the opening and the closing and calculate and generate test data according to the detection signals;
the display device (500) is arranged on the rack (100) and is in communication connection with the acquisition and calculation module, and the display device (500) can receive and display the test data.
2. The common rail valve testing equipment according to claim 1, wherein a mounting frame (144) is arranged on the testing platform (140), the common rail valve (200) is arranged on the mounting frame (144), a mounting hole is formed in the common rail valve (200), a connecting hole (1441) is correspondingly formed in the mounting frame (144), and the mounting hole and the connecting hole (1441) are connected through a connecting piece (150).
3. The common rail valve testing apparatus according to claim 2, wherein the connection hole (1441) is provided with an internal thread, the connection member (150) is correspondingly provided with an external thread, and the connection member (150) is threaded through the mounting hole and then is screwed with the connection hole (1441).
4. Common rail valve testing device according to claim 1, characterized in that a switching valve (600) is further provided on the frame (100), two ends of the oil return pipe (130) are respectively connected with the common rail valve (200) and the switching valve (600), the switching valve (600) is connected with a first oil outlet pipe (610) and a second oil outlet pipe (620), the first oil outlet pipe (610) and the second oil outlet pipe (620) are communicated with the oil tank, a back pressure valve (630) is arranged on the second oil outlet pipe (620), the switching valve (600) can be switched between a first state and a second state, when the switching valve (600) is in the first state, the switching valve (600) communicates the oil return pipe (130) with the first oil outlet pipe (610), when the switching valve (600) is in the second state, the switching valve (600) is communicated with the oil return pipe (130) and the second oil outlet pipe (620).
5. Common rail valve testing arrangement according to claim 4, characterized in that the oil return back pressure of the back pressure valve (630) is set to 25 bar.
6. The common rail valve testing apparatus according to claim 1, wherein the collecting and calculating module comprises a pressure collecting and calculating module, and the pressure collecting and calculating module is capable of collecting a pressure signal of the oil return pipe (130) during switching of the common rail valve (200) between opening and closing, and calculating and generating a response time and a completion time of switching of the common rail valve (200) between opening and closing according to the pressure signal.
7. Common rail valve testing apparatus according to claim 1, characterized in that said acquisition computation module comprises a current acquisition computation module capable of acquiring a drive current signal during switching of said common rail valve (200) between open and closed and computing and generating a response time and a completion time of switching of said common rail valve (200) between open and closed from said drive current signal.
8. The common rail valve testing apparatus of claim 1, wherein the collection and calculation module comprises a voltage collection and calculation module capable of collecting a driving voltage signal during switching of the common rail valve (200) between opening and closing, and calculating and generating a response time and a completion time for switching of the common rail valve (200) between opening and closing based on the driving voltage signal.
9. The common rail valve testing apparatus according to claim 1, wherein a cooling system (700) is further disposed on the frame (100), and the cooling system (700) is capable of cooling the oil in the oil inlet pipe (110), the bypass pipe (120) and the oil return pipe (130).
10. Common rail valve testing device according to claim 1, characterized in that the display device (500) further comprises a printing module, the printing module being capable of printing the test data.
CN202210166672.4A 2022-02-23 2022-02-23 Common rail valve test equipment Pending CN114382626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210166672.4A CN114382626A (en) 2022-02-23 2022-02-23 Common rail valve test equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210166672.4A CN114382626A (en) 2022-02-23 2022-02-23 Common rail valve test equipment

Publications (1)

Publication Number Publication Date
CN114382626A true CN114382626A (en) 2022-04-22

Family

ID=81205609

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210166672.4A Pending CN114382626A (en) 2022-02-23 2022-02-23 Common rail valve test equipment

Country Status (1)

Country Link
CN (1) CN114382626A (en)

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