CN203337401U - Electric control EGR (Exhaust Gas Recirculation) valve performance testbed - Google Patents
Electric control EGR (Exhaust Gas Recirculation) valve performance testbed Download PDFInfo
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- CN203337401U CN203337401U CN201320377105XU CN201320377105U CN203337401U CN 203337401 U CN203337401 U CN 203337401U CN 201320377105X U CN201320377105X U CN 201320377105XU CN 201320377105 U CN201320377105 U CN 201320377105U CN 203337401 U CN203337401 U CN 203337401U
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Abstract
Embodiments of the utility model disclose an electric control EGR (Exhaust Gas Recirculation) valve performance testbed. The testbed comprises a detection device and an electric control system. The detection device includes an operation platform, an EGR valve fixing mechanism, an air inlet pipe, an air outlet pipe, a vacuum pump, a pressure sensor, a differential pressure sensor, a flow sensor, a displacement sensor, a horizontal cylinder and a vertical cylinder. An air inlet end of the air inlet pipe is communicated with the atmosphere, and an air outlet end of the air inlet pipe is provided with an air inlet pipe connector. The air inlet pipe connector is connected with an output end of the horizontal cylinder through a horizontal frame, and an air outlet end of the air inlet pipe connector faces the EGR valve fixing mechanism. An air outlet end of the air outlet pipe is provided with an air outlet pipe connector, and the air outlet pipe connector is connected with an outlet end of the vertical cylinder through a vertical frame. According to the technical scheme of the utility model, the performance of the electric control EGR valve is tested by obtaining the suction port pressure, import and export differential pressure, flow, feedback voltage, displacement and rotation angle of the detection device connected to the EGR valve.
Description
Technical field
The utility model relates to the checkout equipment of EGR valve, relates in particular to electric-controlled type EGR valve performance test board.
Background technology
Exhaust gas recirculatioon (Exhaust Gas Recirculation, EGR) part of Exhaust Gas is isolated and imported for petrol and diesel oil Vehicular internal combustion engine (comprising automobile and truck) technology that the air inlet side is burnt it once again after burning, fundamental purpose can improve the rate of fuel consumption rate when reducing oxides of nitrogen (NOx) in Exhaust Gas and sharing sub-load.In the gas that internal combustion engine is discharged afterwards in burning, oxygen level is extremely low or even do not have, this Exhaust Gas reduces with making air-breathing middle oxygen concentration after air-breathing the mixing, therefore can produce following phenomenon: oxygen level (the highest) temperature when burning lower than atmosphere can reduce, and can suppress the generation of oxides of nitrogen (NOx).When temperature of combustion reduces, the heat energy of cylinder and combustion chamber wall surface, piston face is dispersed and can be reduced, and the loss caused because of thermal dissociation in addition also has slightly and reduces.Its sub-load of fuel oil engine is the amount of oxygen (in order to obtain exerting oneself of same axle) for equivalent is provided during for the inherent non-EGR of cylinder, therefore throttle need to be opened greatly, and oil suction when result is air-breathing (throttle) is lost lower, and the rate of fuel consumption rate can improve.When this is oxygen that piston sucks under one stroke and reduces, can be as using little air displacement engine to adopt the effect of lower acceleration while advancing.Be 15% to the maximum under the situation (in inspiratory capacity) of the regurgitation volume of EGR according to the fuel oil engine, can stop during idling and during high capacity.The large-sized diesel car of exerting oneself less with the vehicle weight engine, its engine load is higher, in order to reach the air capacity standard, also often can use the EGR technology.
Therefore, prior art is many is used for controlling by the EGR valve is installed the amount of exhaust gas recirculation that feeds back to gas handling system on gasoline engine.The high temperature oil steam that the EGR valve can produce engine cylinder-body guides to inlet manifold and burns to improve intake air temperature, combustible exhaust gas is burnt, can improve engine operation improved efficiency burning situation, and reduce the engine burden and effectively reduce engine blow-by gas, extend each parts serviceable life.The EGR valve that performance is qualified just can achieve the above object.How guaranteed performance is qualified, equipment Inspection after testing.The EGR valve divides two kinds of mechanical type and electric-controlled types, there is no the checkout equipment for electric-controlled type EGR valve in prior art, and by manual detection, efficiency is low, and error is large.
Summary of the invention
The utility model, for deficiency of the prior art, provides the electric-controlled type EGR valve performance that a kind of efficiency is high, error is little test board.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of electric-controlled type EGR valve performance test board, comprise pick-up unit and electric-control system, described pick-up unit comprises operating platform, EGR valve fixed mechanism, draft tube, escape pipe, vacuum pump, pressure transducer, differential pressure pick-up, flow sensor, displacement transducer, lateral cylinder and vertical cylinder; The inlet end of described draft tube communicates with atmosphere, the outlet side of described draft tube is provided with a draft tube joint, described draft tube joint is connected with the output terminal of lateral cylinder by a horizontal support, and drive and do horizontal rectilinear motion by lateral cylinder, the outlet side of described draft tube joint is towards EGR valve fixed mechanism; The inlet end of described escape pipe is provided with an escape pipe joint, and described escape pipe joint is connected with the output terminal of vertical cylinder by a longitudinal carrier, and does the vertical line motion by vertical air cylinder driven, and the inlet end of described escape pipe joint is towards EGR valve fixed mechanism; The outlet side of described escape pipe is connected with the suction end of vacuum pump; Described pressure transducer is located on the escape pipe joint; Be connected with pipe of differential pressure measuring and No. two pipes of differential pressure measuring on described differential pressure pick-up, the inlet end of a pipe of described differential pressure measuring is connected with the draft tube joint, and the inlet end of No. two pipes of described differential pressure measuring is connected with the escape pipe joint; Described flow sensor is located on the tube wall in escape pipe stage casing; Described displacement transducer is located at the inside of escape pipe joint outlet side; Described pressure transducer, differential pressure pick-up, flow sensor, displacement transducer, lateral cylinder and vertical cylinder are connected with electric-control system.
As preferably, described electric-control system comprises EGR valve connection terminal, simulating signal sampling board, multifunctional control board, frequency converter, safe grating controller, the first programmable power supply, the second programmable power supply, industrial computer and display, the end of incoming cables U1 of described frequency converter, V1 is connected the three-phase input power by line respectively with W1, the leading-out terminal U2 of frequency converter, V2 is connected with the terminals of vacuum pump (3) respectively with W2
The IN0 end of described multifunctional control board connects the three-phase input power button of frequency converter by K switch M1, the IN1 end connects manual/auto button by switch S B4, the IN2 end connects scram button by switch S P1, the IN3 end connects the OSSD1 end of safe grating controller, the IN4 end connects the left window shift knob of pick-up unit by switch S B4, IN5 connects the right window shift knob of pick-up unit by switch S B5, RL1+, RL1-connects lateral cylinder, RL2+, RL2-connects lateral cylinder, RL3+, RL3-connects the red display lamp, RL4+, RL4-connects yellow display lamp, RL5+, RL5-connects green display lamp, RL6+, RL6-connects hummer, described multifunctional control board is provided with two power ends and connects respectively 24V DC voltage and 12V alternating voltage,
The first programmable power supply is that the 0-20V direct current is controlled, the second programmable power supply is that the 0-30V direct current is controlled, the 5V lead-out terminal of described the first programmable power supply connects the 2nd terminal of EGR valve connection terminal, the com end of the first programmable power supply connects the 3rd terminal of EGR valve connection terminal and the 22nd terminal of simulating signal sampling board, the 0-24V lead-out terminal of described the second programmable power supply connect the 6th terminal of EGR valve connection terminal and be connected in series the first resistance R 1 and the second resistance R 2 after connect the 9th terminal of simulating signal sampling board, the com end of the first programmable power supply connects the 4th terminal of EGR valve connection terminal and the 9th terminal of simulating signal sampling board, the 1st terminal of described simulating signal sampling board gathers the output signal of negative pressure transducer, the 2nd terminal of described simulating signal sampling board gathers the output signal of differential pressure pick-up, the output signal of the 3rd terminal acquisition stream quantity sensor of described simulating signal sampling board, the 4th terminal of described collection of simulant signal board gathers the output signal of linear displacement transducer, described angular transducer gathers EGR valve coil voltage,
Described multifunctional control board, frequency converter, the first programmable power supply, the second programmable power supply is connected with industrial computer by the RS485 universal serial bus, and the measurement data that described industrial computer obtains is shown by display.
As preferably, described pick-up unit also comprises feedback voltage data acquisition line concentration, and described collection line one end can be connected with the feedback voltage signal line of EGR valve, and the other end is connected with the data acquisition board in electric-control system.
As preferably, described vacuum pump is water-ring vacuum pump, and the exhaust end of described water-ring vacuum pump is connected with a cyclic water tank.
As preferably, two vertical slide bars that described longitudinal carrier comprises two support columns that are fixed in operating platform, the first transverse slat that is fixed in two support columns, be slidably connected with the first transverse slat, with two vertical slide bar lower ends, fix and two longitudinal rods of fixing with fixing the second transverse slat of vertical cylinder output terminal, with the second transverse slat lower surface and the 3rd transverse slat of fixing with two longitudinal rod lower ends, described the 3rd transverse slat is provided with for the fixing mounting hole of escape pipe joint.
As preferably, two horizontal sliding bars that described horizontal support comprises two slide blocks, be slidably connected with two slide blocks, with fixing the first stringer board of horizontal sliding bar front end and with the horizontal sliding bar rear end, fix and with fixing the second stringer board of lateral cylinder output terminal, described the first stringer board is provided with for the fixing mounting hole of draft tube joint.
As preferably, described the second stringer board is fixed with a cross bar towards lateral cylinder one side, and described lateral cylinder is provided with the 3rd stringer board, and described the 3rd stringer board is provided with the slide opening be slidably matched with cross bar.
As preferably, described EGR valve fixed mechanism comprises the base that is fixed in operating platform and is fixed in some support columns of base, and the shape of the height of described each support column and relative position and EGR valve shell adapts.
As preferably, described EGR valve fixed mechanism comprise the base that is fixed in operating platform, be fixed in two pillars of base front portion and be fixed in the base rear portion and with the fixing two triangle stringer board of two pillars, the top of described two pillars is provided with register pin; Described horizontal support and lateral cylinder below are provided with two domatic bearings, described domatic bottom surface of support saddle is fixed in operating platform, it is first domatic and second domatic that end face is provided with, described first is domatic and second form ladder between domatic, two slide blocks of described horizontal support are fixed in the first domatic of two domatic bearings, and the base of described lateral cylinder is fixed in the second domatic of two domatic bearings.
As preferably, described EGR valve fixed mechanism comprises the base that is fixed in operating platform and is fixed in the annular boss of base front portion, and described annular boss upper surface is provided with register pin.
As preferably, described EGR valve fixed mechanism comprises the base that is fixed in operating platform, is fixed in two stringer boards of base front portion and is set up in the L shaped connecting pipe on stringer board, described stringer board top is provided with and the contacted arcwall face of L shaped connecting pipe tube wall, and the rear portion of described base also is provided with angular transducer.
According to the technical solution of the utility model, there is following beneficial effect:
(1) can be by obtaining suction inlet pressure, inlet outlet pressure differential, flow, feedback voltage, displacement and the anglec of rotation of the pick-up unit that is connected into the EGR valve, the properties that can test out electric-controlled type EGR valve is as follows: 1. gas outlet pressure; 2. import and export differential pressure; 3.EGR valve flow; 4. feedback voltage (aperture); 5.EGR the lift of a valve; 6. the anglec of rotation of butterfly valve; 7.EGR valve cut-in voltage; 8.EGR the threshold switch response time; 9.EGR the valve linearity; 10.EGR valve durability test; 11. flow and feedback voltage relation curve; 12. feedback voltage and lift relation curve; 13. flow and differential pressure relation curve; 14. flow and lift relation curve;
(2) this test board can be done above-mentioned performance test to five kinds of dissimilar EGR valves, can manually change frock clamp, and different parameters is set is tested.The parameter preservation of can cutting off the power supply, test data can form examining report, and can preserve correlation graph, and figure is used as further to analyze;
(3) test board is with safety feature: rear safety door/window, the place ahead safe grating.Once there is foreign matter at rear opening of doors and windows or grating place, the place ahead, machine meeting automatic alarm, and show relevant prompting.Thereby guarantee operator's safety;
(4) this test board provides the manual test individual feature, or automatically tests single or multiple functions;
(5) this test board can be located the opening degree of EGR valve valve block accurately, can be positioned any point and carry out the correlated performance test in total lift scope;
(6) the exportable different DC voltage of this test board (0-24) V, and can be manually or the different dutycycle (0-99%) of regulating impulse Voltage-output automatically;
(7) this test board can be regulated different flow values by Frequency Converter Control, forms different differential pressures.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment.
The structural representation that Fig. 2 is longitudinal carrier in the utility model embodiment.
The structural representation that Fig. 3 is horizontal support in the utility model embodiment.
The structural representation that Fig. 4 is EGR valve fixed mechanism in the utility model embodiment 1.
The structural representation that Fig. 5 is EGR valve fixed mechanism in the utility model embodiment 2.
The structural representation that Fig. 6 is domatic bearing in the utility model embodiment 2.
The structural representation that Fig. 7 is EGR valve fixed mechanism in the utility model embodiment 3.
The structural representation that Fig. 8 is EGR valve fixed mechanism in the utility model embodiment 4.
The electrical control system structure schematic diagram that Fig. 9 is the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
A kind of electric-controlled type EGR valve performance test board, as Figure 1-4, comprise pick-up unit and electric-control system, described pick-up unit comprises operating platform, EGR valve fixed mechanism, draft tube 1, escape pipe 2, vacuum pump 3, pressure transducer 4, differential pressure pick-up 5, flow sensor 6, displacement transducer, lateral cylinder 7, vertical cylinder 8 and feedback voltage data acquisition line concentration; The inlet end of described draft tube 1 communicates with atmosphere, the outlet side of described draft tube is provided with a draft tube joint 11, described draft tube joint 11 is connected with the output terminal of lateral cylinder 7 by a horizontal support, and drive and do horizontal rectilinear motion by lateral cylinder, the outlet side of described draft tube joint is towards EGR valve fixed mechanism; The inlet end of described escape pipe 2 is provided with an escape pipe joint 21, described escape pipe joint 21 is connected with the output terminal of vertical cylinder 8 by a longitudinal carrier, and do the vertical line motion by vertical air cylinder driven, the inlet end of described escape pipe joint is towards EGR valve fixed mechanism; The outlet side of described escape pipe is connected with the suction end of vacuum pump 3; Described pressure transducer 4 is located on escape pipe joint 21; Be connected with pipe 51 of differential pressure measuring and No. two pipes 52 of differential pressure measuring on described differential pressure pick-up 5, the inlet end of a pipe 51 of described differential pressure measuring is connected with draft tube joint 11, and the inlet end of No. two pipes 52 of described differential pressure measuring is connected with escape pipe joint 21; Described flow sensor 6 is located on the tube wall in escape pipe stage casing; Described displacement transducer is located at the inside of escape pipe joint 21 outlet sides; Described pressure transducer 4, differential pressure pick-up (5), flow sensor 6, displacement transducer, lateral cylinder 7 and vertical cylinder 8 are connected with electric-control system; Described collection line one end can be connected with the feedback voltage signal line of EGR valve, and the other end is connected with the data acquisition board in electric-control system; Described vacuum pump 3 is water-ring vacuum pump, and the exhaust end of described water-ring vacuum pump is connected with a cyclic water tank.
Two vertical slide bars 83 that described longitudinal carrier comprises two support columns 81 that are fixed in operating platform, the first transverse slat 82 that is fixed in two support columns, be slidably connected with the first transverse slat, with two vertical slide bar lower ends, fix and two longitudinal rods 85 of fixing with fixing the second transverse slat 84 of vertical cylinder output terminal, with the second transverse slat lower surface and the 3rd transverse slat 86 of fixing with two longitudinal rod lower ends, described the 3rd transverse slat 86 is provided with for the fixing mounting hole of escape pipe joint 21.
Two horizontal sliding bars 72 that described horizontal support comprises two slide blocks 71, be slidably connected with two slide blocks, with fixing the first stringer board 73 of horizontal sliding bar front end and with the horizontal sliding bar rear end, fix and with fixing the second stringer board 74 of lateral cylinder 7 output terminals, described the first stringer board 73 is provided with for the fixing mounting hole of draft tube joint 11.Described the second stringer board 74 is fixed with a cross bar 75 towards lateral cylinder one side, and described lateral cylinder 7 is provided with the 3rd stringer board 76, and described the 3rd stringer board 76 is provided with the slide opening be slidably matched with cross bar 75.
EGR valve fixed mechanism comprises the base 91 that is fixed in operating platform and the annular boss 96 that is fixed in the base front portion, and described annular boss upper surface is provided with register pin.
With reference to figure 9, wherein electric-control system comprises EGR valve connection terminal, simulating signal sampling board, multifunctional control board, frequency converter, the safe grating controller, the first programmable power supply, the second programmable power supply, industrial computer and display, the end of incoming cables U1 of frequency converter, V1 is connected the three-phase input power by line respectively with W1, the leading-out terminal U2 of frequency converter, V2 is connected with the terminals of vacuum pump 3 respectively with W2, the IN0 end of multifunctional control board connects the three-phase input power button of frequency converter by K switch M1, the IN1 end connects manual/auto button by switch S B4, the IN2 end connects scram button by switch S P1, the IN3 end connects the OSSD1 end of safe grating controller, the IN4 end connects the left window shift knob of pick-up unit by switch S B4, IN5 connects the right window shift knob of pick-up unit by switch S B5, RL1+, RL1-connects lateral cylinder, RL2+, RL2-connects lateral cylinder, RL3+, RL3-connects the red display lamp, RL4+, RL4-connects yellow display lamp, RL5+, RL5-connects green display lamp, RL6+, RL6-connects hummer, multifunctional control board is provided with two power ends and connects respectively 24V DC voltage and 12V alternating voltage, the first programmable power supply is that the 0-20V direct current is controlled, the second programmable power supply is that the 0-30V direct current is controlled, the 5V lead-out terminal of the first programmable power supply connects the 2nd terminal of EGR valve connection terminal, the com end of the first programmable power supply connects the 3rd terminal of EGR valve connection terminal and the 22nd terminal of simulating signal sampling board, the 0-24V lead-out terminal of the second programmable power supply connect the 6th terminal of EGR valve connection terminal and be connected in series the first resistance R 1 and the second resistance R 2 after connect the 9th terminal of simulating signal sampling board, the com end of the first programmable power supply connects the 4th terminal of EGR valve connection terminal and the 9th terminal of simulating signal sampling board, the 1st terminal of simulating signal sampling board gathers the output signal of negative pressure transducer, the 2nd terminal of simulating signal sampling board gathers the output signal of differential pressure pick-up, the output signal of the 3rd terminal acquisition stream quantity sensor of simulating signal sampling board, the 4th terminal of collection of simulant signal board gathers the output signal of linear displacement transducer, angular transducer gathers EGR valve coil voltage, multifunctional control board, and frequency converter, the first programmable power supply, the second programmable power supply is connected with industrial computer by the RS485 universal serial bus, and the measurement data that industrial computer obtains is shown by display.
During use, electric-controlled type EGR valve clamping, on the annular boss 96 of EGR valve fixed mechanism, and is connected the feedback voltage signal line of electric-controlled type EGR valve with feedback voltage data acquisition line concentration; Open again lateral cylinder 7 and vertical cylinder 8, draft tube joint 11 is connected with electric-controlled type EGR valve with escape pipe joint 21; Open again vacuum pump, form gas circuit; Open again each sensor, can obtain suction inlet pressure, inlet outlet pressure differential, flow, feedback voltage and displacement, thereby test out the performance of electric-controlled type EGR valve.
By the electric-controlled type EGR valve performance test platform of above embodiment, be applicable to the detection (comprising gasoline and diesel engine) of various types of EGR valves of automatically controlled EGR series.Can simulate the ruuning situation of EGR valve in waste gas circulation, artificial most performances of automatic or manual test EGR valve, as: 1. gas outlet pressure; 2. import and export differential pressure; 3.EGR valve flow; 4. feedback voltage (aperture); 5.EGR the lift of a valve; 6. the anglec of rotation of butterfly valve; 7.EGR valve cut-in voltage; 8.EGR the threshold switch response time; 9.EGR the valve linearity; 10.EGR valve durability test; 11. flow and feedback voltage relation curve; 12. feedback voltage and lift relation curve; 13. flow and differential pressure relation curve; 14. flow and lift relation curve.Can do above-mentioned performance test to five kinds of dissimilar EGR valves, can manually change frock clamp, and different parameters is set is tested.The parameter preservation of can cutting off the power supply, test data can form examining report, and can preserve correlation graph, and figure is used as further to analyze.Test board is with safety feature: rear safety door/window, the place ahead safe grating.Once there is foreign matter at rear opening of doors and windows or grating place, the place ahead, machine meeting automatic alarm, and show relevant prompting.Thereby guarantee operator's safety.This test board provides the manual test individual feature, or automatically tests single or multiple functions.This test board can be located the opening degree of EGR valve valve block accurately, can be positioned any point and carry out the correlated performance test in total lift scope.The exportable different DC voltage of this test board (0-24) V, and can be manually or the different dutycycle (0-99%) of regulating impulse Voltage-output automatically.This test board can be regulated different flow values by frequency-variable controller, forms different differential pressures.
embodiment 2
On the basis of embodiment 1, the fixed mechanism of EGR valve is replaced with to following structure.
As shown in Figure 5,6, EGR valve fixed mechanism comprise the base 91 that is fixed in operating platform, be fixed in two pillars 93 of base front portion and be fixed in the base rear portion and with the fixing two triangle stringer board 94 of two pillars, the top of described two pillars 93 is provided with register pin; Described horizontal support and lateral cylinder below are provided with two domatic bearings, described domatic bottom surface of support saddle is fixed in operating platform, end face is provided with first domatic 951 and second domatic 952, described first is domatic and second form ladder between domatic, two slide blocks 71 of described horizontal support are fixed in the first domatic 951 of two domatic bearings, and the base of described lateral cylinder 7 is fixed in second domatic 952 of two domatic bearings.
On the basis of embodiment 1, the fixed mechanism of EGR valve is replaced with to following structure.
As shown in Figure 7, EGR valve fixed mechanism comprises the base 91 that is fixed in operating platform and the some support columns 92 that are fixed in base, and the shape of the height of described each support column and relative position and EGR valve shell adapts.
embodiment 4
On the basis of embodiment 1, the fixed mechanism of EGR valve is replaced with to following structure.
As shown in Figure 8, EGR valve fixed mechanism comprises base (91), two stringer boards (97) that are fixed in the base front portion that are fixed in operating platform and is set up in the L shaped connecting pipe (98) on stringer board, described stringer board (97) top is provided with and the contacted arcwall face of L shaped connecting pipe tube wall, and the rear portion of described base (91) also is provided with angular transducer (99).
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (10)
1. an electric-controlled type EGR valve performance test board, comprise pick-up unit and electric-control system, it is characterized in that: described pick-up unit comprises operating platform, EGR valve fixed mechanism, draft tube (1), escape pipe (2), vacuum pump (3), pressure transducer (4), differential pressure pick-up (5), flow sensor (6), displacement transducer, lateral cylinder (7) and vertical cylinder (8); The inlet end of described draft tube (1) communicates with atmosphere, the outlet side of described draft tube is provided with a draft tube joint (11), described draft tube joint (11) is connected with the output terminal of lateral cylinder (7) by a horizontal support, and drive and do horizontal rectilinear motion by lateral cylinder, the outlet side of described draft tube joint is towards EGR valve fixed mechanism; The inlet end of described escape pipe (2) is provided with an escape pipe joint (21), described escape pipe joint (21) is connected with the output terminal of vertical cylinder (8) by a longitudinal carrier, and do the vertical line motion by vertical air cylinder driven, the inlet end of described escape pipe joint is towards EGR valve fixed mechanism; The outlet side of described escape pipe is connected with the suction end of vacuum pump (3); Described pressure transducer (4) is located on escape pipe joint (21); Be connected with No. two pipes of a pipe of differential pressure measuring (51) and differential pressure measuring (52) on described differential pressure pick-up (5), the inlet end of a pipe of described differential pressure measuring (51) is connected with draft tube joint (11), and the inlet end of No. two pipes of described differential pressure measuring (52) is connected with escape pipe joint (21); Described flow sensor (6) is located on the tube wall in escape pipe stage casing; Described displacement transducer is located at the inside of escape pipe joint (21) outlet side; Described pressure transducer (4), differential pressure pick-up (5), flow sensor (6), displacement transducer, lateral cylinder (7) and vertical cylinder (8) are connected with electric-control system.
2. a kind of electric-controlled type EGR valve performance test board according to claim 1, it is characterized in that: described pick-up unit also comprises feedback voltage data acquisition line concentration, described feedback voltage data acquisition line concentration one end can be connected with the feedback voltage signal line of EGR valve, and the other end is connected with the data acquisition board in electric-control system.
3. a kind of electric-controlled type EGR valve performance test board according to claim 1, it is characterized in that: described vacuum pump (3) is water-ring vacuum pump, and the exhaust end of described water-ring vacuum pump is connected with a cyclic water tank.
4. according to claim 1 or 2 or 3 described a kind of electric-controlled type EGR valve performance test boards, it is characterized in that, described electric-control system comprises EGR valve connection terminal, simulating signal sampling board, multifunctional control board, frequency converter, the safe grating controller, the first programmable power supply, the second programmable power supply, industrial computer and display, the end of incoming cables U1 of described frequency converter, V1 is connected the three-phase input power by line respectively with W1, the leading-out terminal U2 of frequency converter, V2 is connected with the terminals of vacuum pump (3) respectively with W2
The IN0 end of described multifunctional control board connects the three-phase input power button of frequency converter by K switch M1, the IN1 end connects manual/auto button by switch S B4, the IN2 end connects scram button by switch S P1, the IN3 end connects the OSSD1 end of safe grating controller, the IN4 end connects the left window shift knob of pick-up unit by switch S B4, IN5 connects the right window shift knob of pick-up unit by switch S B5, RL1+, RL1-connects lateral cylinder, RL2+, RL2-connects lateral cylinder, RL3+, RL3-connects the red display lamp, RL4+, RL4-connects yellow display lamp, RL5+, RL5-connects green display lamp, RL6+, RL6-connects hummer, described multifunctional control board is provided with two power ends and connects respectively 24V DC voltage and 12V alternating voltage,
The first programmable power supply is that the 0-20V direct current is controlled, the second programmable power supply is that the 0-30V direct current is controlled, the 5V lead-out terminal of described the first programmable power supply connects the 2nd terminal of EGR valve connection terminal, the com end of the first programmable power supply connects the 3rd terminal of EGR valve connection terminal and the 22nd terminal of simulating signal sampling board, the 0-24V lead-out terminal of described the second programmable power supply connect the 6th terminal of EGR valve connection terminal and be connected in series the first resistance R 1 and the second resistance R 2 after connect the 9th terminal of simulating signal sampling board, the com end of the first programmable power supply connects the 4th terminal of EGR valve connection terminal and the 9th terminal of simulating signal sampling board, the 1st terminal of described simulating signal sampling board gathers the output signal of negative pressure transducer, the 2nd terminal of described simulating signal sampling board gathers the output signal of differential pressure pick-up, the output signal of the 3rd terminal acquisition stream quantity sensor of described simulating signal sampling board, the 4th terminal of described collection of simulant signal board gathers the output signal of linear displacement transducer, described angular transducer gathers EGR valve coil voltage,
Described multifunctional control board, frequency converter, the first programmable power supply, the second programmable power supply is connected with industrial computer by the RS485 universal serial bus, and the measurement data that described industrial computer obtains is shown by display.
5. according to claim 1 or 2 or 3 described a kind of electric-controlled type EGR valve performance test boards, it is characterized in that: described longitudinal carrier comprises two support columns (81) that are fixed in operating platform, be fixed in first transverse slat (82) of two support columns, the two vertical slide bars (83) that are slidably connected with the first transverse slat, with two vertical slide bar lower ends, fix and with fixing the second transverse slat (84) of vertical cylinder output terminal, with fixing two longitudinal rods (85) of the second transverse slat lower surface and with fixing the 3rd transverse slat (86) in two longitudinal rod lower ends, described the 3rd transverse slat (86) is provided with for the fixing mounting hole of escape pipe joint (21).
6. a kind of electric-controlled type EGR valve performance test board according to claim 5, it is characterized in that: described horizontal support comprises two slide blocks (71), two horizontal sliding bars (72) that are slidably connected with two slide blocks, with fixing the first stringer board (73) of horizontal sliding bar front end and with the horizontal sliding bar rear end, fix and with fixing the second stringer board (74) of lateral cylinder (7) output terminal, described the first stringer board (73) is provided with for the fixing mounting hole of draft tube joint (11), described the second stringer board (74) is fixed with a cross bar (75) towards lateral cylinder one side, described lateral cylinder (7) is provided with the 3rd stringer board (76), described the 3rd stringer board (76) is provided with the slide opening be slidably matched with cross bar (75).
7. a kind of electric-controlled type EGR valve performance test board according to claim 6, it is characterized in that: described EGR valve fixed mechanism comprises the base (91) that is fixed in operating platform and the some support columns (92) that are fixed in base, and the shape of the height of described each support column and relative position and EGR valve shell adapts.
8. a kind of electric-controlled type EGR valve performance test board according to claim 6, it is characterized in that: described EGR valve fixed mechanism comprises the base (91) that is fixed in operating platform, be fixed in two pillars (93) of base front portion and be fixed in the base rear portion and with the fixing two triangle stringer board (94) of two pillars, the top of described two pillars (93) is provided with register pin, described horizontal support and lateral cylinder below are provided with two domatic bearings, described domatic bottom surface of support saddle is fixed in operating platform, end face is provided with first domatic (951) and second domatic (952), described first is domatic and second form ladder between domatic, two slide blocks (71) of described horizontal support are fixed in first domatic (951) of two domatic bearings, the base of described lateral cylinder (7) is fixed in second domatic (952) of two domatic bearings.
9. a kind of electric-controlled type EGR valve performance test board according to claim 6, it is characterized in that: described EGR valve fixed mechanism comprises the base (91) that is fixed in operating platform and the annular boss (96) that is fixed in the base front portion, and described annular boss upper surface is provided with register pin.
10. a kind of electric-controlled type EGR valve performance test board according to claim 6, it is characterized in that: described EGR valve fixed mechanism comprises base (91), two stringer boards (97) that are fixed in the base front portion that are fixed in operating platform and is set up in the L shaped connecting pipe (98) on stringer board, described stringer board (97) top is provided with and the contacted arcwall face of L shaped connecting pipe tube wall, and the rear portion of described base (91) also is provided with angular transducer (99).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320377105XU CN203337401U (en) | 2013-06-27 | 2013-06-27 | Electric control EGR (Exhaust Gas Recirculation) valve performance testbed |
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| CN201320377105XU CN203337401U (en) | 2013-06-27 | 2013-06-27 | Electric control EGR (Exhaust Gas Recirculation) valve performance testbed |
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| CN201320377105XU Withdrawn - After Issue CN203337401U (en) | 2013-06-27 | 2013-06-27 | Electric control EGR (Exhaust Gas Recirculation) valve performance testbed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335859A (en) * | 2013-06-27 | 2013-10-02 | 新昌县瑞宏自动化设备有限公司 | Electrical control type EGR valve performance testing table |
| CN106197885A (en) * | 2016-06-27 | 2016-12-07 | 泰州市金鹰精密铸造有限公司 | A kind of EGR parts air tightness test platform and method of testing |
-
2013
- 2013-06-27 CN CN201320377105XU patent/CN203337401U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335859A (en) * | 2013-06-27 | 2013-10-02 | 新昌县瑞宏自动化设备有限公司 | Electrical control type EGR valve performance testing table |
| CN103335859B (en) * | 2013-06-27 | 2016-04-20 | 新昌县瑞宏自动化设备有限公司 | Electric-controlled type EGR valve is performance test bed |
| CN106197885A (en) * | 2016-06-27 | 2016-12-07 | 泰州市金鹰精密铸造有限公司 | A kind of EGR parts air tightness test platform and method of testing |
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