CN201236755Y - Continuous rotary valve used for EGR valve hot gas periodic impact fatigue endurance test - Google Patents
Continuous rotary valve used for EGR valve hot gas periodic impact fatigue endurance test Download PDFInfo
- Publication number
- CN201236755Y CN201236755Y CNU2008201625560U CN200820162556U CN201236755Y CN 201236755 Y CN201236755 Y CN 201236755Y CN U2008201625560 U CNU2008201625560 U CN U2008201625560U CN 200820162556 U CN200820162556 U CN 200820162556U CN 201236755 Y CN201236755 Y CN 201236755Y
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- 230000000737 periodic effect Effects 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 44
- 230000035939 shock Effects 0.000 claims description 17
- 239000002912 waste gas Substances 0.000 claims description 12
- 238000009661 fatigue test Methods 0.000 abstract description 4
- 238000009863 impact test Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000013022 venting Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 241000486406 Trachea Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a continuous rotary valve used in EGR valve high-temperature exhaust gas periodic impact fatigue durability tests. Connecting pipes, grooves and through holes are respectively arranged on the two sides of a casing; a rotor is arranged in the casing; a through hole and a groove are formed on the rotor; a gear is arranged at one end of the rotor; a left support plate, a gasket and a close cover which are used for mounting the casing body are arranged at one end of the casing; a through hole is formed on the wall surface of the other end of the casing; a front baffle and a back baffle are respectively arranged in the two grooves of the casing wall; toothed racks are respectively arranged on the front and the back baffles; another gear is arranged between the front toothed rack and the back toothed rack; a third gear which is coaxial with the gear arranged between the two toothed racks is arranged at one end of a shaft; and the gear which is arranged on the rotor is connected with a DC motor. The continuous rotary valve has the advantages that continuous steady air supply can be transformed to pulsed gas with adjustable pulse frequency and pulse width; and the air supply can be automatically restored to original state after being impacted by each impulse, therefore, the continuous rotary valve can be used in not only EGR valve thermal fatigue tests, but also the repeated impact tests of other similar gases.
Description
Technical field
The utility model relates to adjustable rotary valve, relates in particular to a kind of continuous rotary valve of the EGR of being used for valve high-temp waste gas periodic shock fatigue durability test.
Background technique
The continuous rotary valve that is used for the test of EGR valve high-temp waste gas periodic shock fatigue durability.In reducing the every technology of motor vehicle exhaust emission, the EGR technology is because its every advantage, just admitted and adopt by more and more people, its main EGR of actuator valve also so annual output rapidly rise.Every test of meanwhile domestic EGR valve also progressively launches, and wherein the thermal fatigue reliability performance of EGR valve directly influences EGR behaviour in service and life-span, and this need carry out the thermal shock fatigue test to the EGR valve with regard to requisite.Therefore invent a kind of simple in structurely, cost of investment is low, and the initialized pulse gas transducer of state after can changing pulse frequency, pulse width and carrying out each pulse shock is that using value is arranged very much.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of continuous rotary valve of the EGR of being used for valve high-temp waste gas periodic shock fatigue durability test is provided.
It comprises rotor, housing, first takes over, second takes over, front screen, sheet under the backboard, backboard last slice, preceding tooth bar, back tooth bar, left supported plate, the bottom right support plate, upper right support plate, top cover, pad, capping, first gear, second gear, the 3rd gear, axle, back shroud, front shroud, first through hole, first groove, second groove, preceding through hole, back through hole, the 3rd groove, the 4th groove, second through hole, base, the EGR valve, continuous rotary valve, the high temperature source of the gas, the housing both sides are provided with first and take over, second takes over, the 3rd groove, the 4th groove, preceding through hole, back through hole, be provided with rotor in the housing, rotor is provided with first through hole, first groove, second groove, housing one end is provided with the left supported plate that is used to lay housing, pad, capping, one end of rotor is provided with first gear, the other end wall of housing is provided with second through hole, be provided with the bottom right support plate that is used to lay housing, the upper end of bottom right support plate is provided with upper right support plate; Be provided with front screen in the 3rd groove, front screen is provided with preceding tooth bar, is provided with sheet under the backstop in the 4th groove, sheet connects backboard last slice under the backboard, and backboard last slice is provided with the back tooth bar, is provided with second gear in the middle of preceding tooth bar and the back tooth bar, be provided with axle in second gear, an end of axle is provided with the 3rd gear; What connect left and right sides support plate has front shroud, back shroud, a top cover; Left and right sides support plate and front and rear cover plate are placed on the base, and first gear is connected with direct current generator, and the 3rd gear is connected with stepper motor.
The beneficial effect that the utility model compared with prior art has:
1) the rotor left end in the utility model connects direct current generator, can change motor speed, thereby can change the pulse gas generated frequency, adapts to different thermal shock test requirements;
2) can change the depth of section of turnover pipe in the utility model by the position of adjusting lower pedal, thereby change the lasting angle that radial direction through hole is taken over first on the rotor, second adapter is connected, obtain the pulse gas of required different pulse widths then;
3) utilize moving up and down of rotation of stepper motor driven gear axle and adjustment baffle plate in the utility model, regulating and controlling is convenient, and control accurately;
4) the utility model device, rotor rotate a circle and can generate pulse gas twice;
5) in the utility model by making that state is able to initialization after each pulse shock having opened four through holes on the housing and opened two elongated slots on the rotor.When rotor turns over several angle, when making the through hole of epitrochanterian elongated slot and shell wall side relative, promptly gas is by two tracheaes, two elongated slots of flowing through, and the through hole by shell wall side flows to atmosphere again, reaches the initialization effect;
6) the utility model can be used for EGR valve thermal fatigue test research, also can be used to other gas percussion fatigue tests simultaneously, can directly use as the pulse gas maker again.
Description of drawings
Fig. 1 is a surface structure schematic representation of the present utility model;
Fig. 2 is that each component of the present utility model split schematic representation;
Fig. 3 is housing and baffle plate erection drawing;
Fig. 4 (a) is the 4th groove 28 cross sectional illustration figure on the shell wall;
Fig. 4 (b) is that shell is kept away the 3rd groove, the 4th groove location explanation;
Fig. 4 (c) is the 3rd groove 27 cross sectional illustration figure on the shell wall;
Fig. 5 (a) is that baffle plate is adjusted to the maximum pulse width view;
Fig. 5 (b) is that baffle plate is adjusted to maximum pulse width state sectional view;
Fig. 6 (a) is the rotor shell wall partial sectional view (part in enlarged view 5 circles) of first proper phase under the maximum pulse width state;
Fig. 6 (b) is the rotor shell wall partial sectional view of second proper phase under the maximum pulse width state;
Fig. 6 (c) is the rotor shell wall partial sectional view of the 3rd proper phase under the maximum pulse width state;
Fig. 6 (d) is the rotor shell wall partial sectional view of the 4th proper phase under the maximum pulse width state;
Accompanying drawing 7 (a) is that baffle plate is adjusted to the intermediateness schematic representation;
Accompanying drawing 7 (b) is that baffle plate is adjusted to the intermediateness sectional view;
Fig. 8 (a) is the rotor shell wall partial sectional view (part in enlarged view 7 circles) that baffle plate is adjusted to first proper phase under the intermediateness;
Fig. 8 (b) is the rotor shell wall partial sectional view that baffle plate is adjusted to second proper phase under the intermediateness;
Fig. 8 (c) is the rotor shell wall partial sectional view that baffle plate is adjusted to the 3rd proper phase under the intermediateness;
Fig. 8 (d) is the rotor shell wall partial sectional view that baffle plate is adjusted to the 4th proper phase under the intermediateness;
Fig. 9 is an EGR thermal shock test partial devices schematic representation;
Among the figure: rotor 1, housing 2, first takes over 3, second takes over 4, front screen 5, sheet 6 under the backboard, backboard last slice 7, preceding tooth bar 8, back tooth bar 9, left supported plate 10, bottom right support plate 11, upper right support plate 12, top cover 13, pad 14, capping 15, first gear 16, second gear 17, the 3rd gear 18, axle 19, back shroud 20, front shroud 21, first through hole 22, first groove 23, second groove 24, preceding through hole 25, back through hole 26, the 3rd groove 27, the 4th groove 28, second through hole 29, base 30, EGR valve 31, continuous rotary valve 32, high temperature source of the gas 33.
Embodiment
As Fig. 1,2, shown in 3, the continuous rotary valve that is used for the test of EGR valve high-temp waste gas periodic shock fatigue durability, it is characterized in that comprising rotor 1, housing 2, first takes over 3, second takes over 4, front screen 5, sheet 6 under the backboard, backboard last slice 7, preceding tooth bar 8, back tooth bar 9, left supported plate 10, bottom right support plate 11, upper right support plate 12, top cover 13, pad 14, capping 15, first gear 16, second gear 17, the 3rd gear 18, axle 19, back shroud 20, front shroud 21, first through hole 22, first groove 23, second groove 24, preceding through hole 25, back through hole 26, the 3rd groove 27, the 4th groove 28, second through hole 29, base 30, EGR valve 31, continuous rotary valve 32, high temperature source of the gas 33, housing 2 both sides are provided with first and take over 3, second takes over 4, the 3rd groove 27, the 4th groove 28, preceding through hole 25, back through hole 26, be provided with rotor 1 in the housing 2, rotor 1 is provided with first through hole 22, first groove 23, second groove 24, housing 2 one ends are provided with the left supported plate 10 that is used to lay housing, pad 14, capping 15, one end of rotor 2 is provided with first gear 16, the other end wall of housing 2 is provided with second through hole 29, be provided with the bottom right support plate 11 that is used to lay housing, the upper end of bottom right support plate 11 is provided with upper right support plate 12; Be provided with front screen 5 in the 3rd groove 27, front screen 5 is provided with preceding tooth bar 8, be provided with sheet 6 under the backstop in the 4th groove 28, sheet 6 connects backboard last slice 7 under the backboard, backboard last slice 7 is provided with back tooth bar 9, before are provided with in the middle of tooth bar 8 and the back tooth bar 9 and are provided with axle 19 in second gear, 17, the second gears, an end of axle 19 is provided with the 3rd gear 18; What connect left and right sides support plate has front shroud 21, back shroud 22, a top cover 13; Left and right sides support plate and front and rear cover plate are placed on the base 30, and first gear 16 is connected with direct current generator.Described the 3rd gear 18 is connected with stepper motor.
The continuous rotary valve that is used for the test of EGR valve high-temp waste gas periodic shock fatigue durability, in rotary course, when through hole on the rotor is taken over first, second contacted when relative, epitrochanterian two elongated slots not four through holes with shell wall side are relative, and guaranteeing to form smoothly, pulse gas flows out second adapter.Change first adapter, second depth of section of taking over by the upper-lower position of adjusting baffle plate, thereby radial direction through hole is taken over the lasting angle that is connected with first adapter, second on the change rotor, obtains the pulse gas of required different pulse widths then.
The continuous rotary valve that is used for the test of EGR valve high-temp waste gas periodic shock fatigue durability, in rotary course, when epitrochanterian two elongated slots with two pairs of through-hole alignments of shell wall side the time, epitrochanterian through hole is illogical with any hole, can reach state initialization effect so that source of the gas and EGR valve gas and atmosphere communicate smoothly.The rotating speed that is used for the continuous rotary valve rotor of EGR valve high-temp waste gas periodic shock fatigue durability test has determined the generated frequency of pulse gas, the rotor rotation is by a direct current driven by motor, can be by regulating the rotating speed of direct current generator, thereby regulate the rotating speed of rotor, the frequency of also just having regulated pulse gas.
Be used for the continuous rotary valve of EGR valve high-temp waste gas periodic shock fatigue durability test, with controllable register position and rotor the concrete generative process of pulse gas be described, pulse width variability process and state initialization procedure.
Be adjusted under the maximum pulse width state at baffle plate, just baffle plate is in initial position, the valid circulation area maximum, this moment, pulse gas generated working procedure: Fig. 6 (a) to 6 (d), four width of cloth figure are the rotor diverse location figure that turns clockwise, and need not adjust front and rear baffle when the needs pulse width is maximum, and rotor is during to Fig. 6 (a) position, epitrochanterian radial hole (first through hole 22) beginning and first is taken over and is contacted with second, begins to form valid circulation area; Gas is taken over to flow through by epitrochanterian radial hole by first again and second is taken over the EGR valve, after continuing to remain unchanged after valid circulation area increases earlier gradually in the rotary course several angle again, rotor is gradually reduced to Fig. 6 (b) position, valid circulation area vanishing this moment, pulse gas generated and finished this moment.This has just finished a pulse gas generative process, and corresponding pulsewidth is α
1Angle.
Be adjusted under the maximum pulse width state at baffle plate, state initial work engineering: when rotor passes through the position of Fig. 6 (b), pulse gas generates and finishes, continue to rotate to 6 (c) to the position, commentaries on classics begins respectively to contact with two pairs of through holes on the shell wall from two last elongated slots, begin to form valid circulation area, this moment source of the gas by the first elongated slot place that takes over rotor, through hole flows to atmosphere on the wall of flowing through again; And opposite side, EGR valve and second is taken over mesohigh gas, backflow by the elongated slot of rotor opposite side, again through shell wall back two through hole to atmosphere, the init state process begins, and continues rotor to Fig. 6 (d) position, venting finishes, the venting angle of correspondence is γ
1, the init state process finishes.Continuing rotor can be so that begins to generate the position again to 6 (b) to Fig. 6 (a) pulse gas again, 6 (c), and 6 (d) so repeatedly, form consecutive pulses gas.
Under baffle plate up-down adjustment diverse location state, the effective flow area of the position change of baffle plate just, thereby obtain the pulse gas of distinct pulse widths, here for convenience of description, baffle plate is adjusted to the neutral position, production burst this moment gas working procedure: Fig. 8 (a) is to 8 (d), four width of cloth figure are that rotor rotates diverse location figure clockwise continuously, rotor is during to Fig. 8 (a) position, epitrochanterian radial hole begin with first take over rotor between baffle plate contact relative, begin to form valid circulation area, make gas take over to flow through again and second take over the EGR valve by epitrochanterian radial hole by first, after continuing to remain unchanged after valid circulation area increases earlier gradually in the rotary course several angle again, rotor is gradually reduced to Fig. 8 (b) position, valid circulation area vanishing this moment, and pulse gas generated and finished this moment.This has just finished a pulse gas generative process, and corresponding pulsewidth is α
2Angle.
Baffle plate is adjusted to the neutral position, this moment state initial work engineering: rotor is during through the position of Fig. 8 (b), pulse gas generates and finishes, continue to rotate to 8 (c) to the position, epitrochanterian two elongated slots begin respectively with second take over rotor between backboard contact, begin to form valid circulation area, this moment source of the gas by the first elongated slot place that takes over rotor, through hole flows to atmosphere on the wall of flowing through again; And opposite side, EGR valve and second is taken over mesohigh gas, backflow by the elongated slot of rotor opposite side, again through shell wall back two through hole to atmosphere, the init state process begins, and continues rotor to Fig. 8 (d) position, venting finishes, the venting angle of correspondence is γ
2, the init state process finishes.Continuing rotor can be so that begins to generate the position again to 8 (b) to Fig. 8 (a) pulse gas again, 8 (c), and 8 (d) so repeatedly, form consecutive pulses gas.
Regulating impulse width process: by default, baffle plate does not cover the effective flow area between front and rear baffle and the rotor, the pulse width maximum of this moment, and corresponding angle is for being forwarded to the differential seat angle of 6 (b) position, i.e. α by Fig. 6 (a) position
1In case and baffle plate moves, and has changed the start angle of the correspondence of air inlet so, the initial pulse gas difference that generates corresponding angle has just been brought the difference of pulse width like this, and the neutral position time, pulsewidth is just by original α as baffle plate
1Be reduced to α
2, it is zero that effective flow area area is taken in first adapter, second that the continuation moving stop can make, and does not form the gas passageway, pulsewidth is zero; Concrete baffle plate is to be regulated by following method: rotated by a stepper motor driven gear axle, and the bonding tooth bar that makes of gear on the gear shaft and tooth bar can move up and down, make front and rear baffle also move up and down thereupon, front screen move down seal the cross section, top in, corresponding backboard up lifts seals lower section.
Regulating impulse frequency process: the rotating speed of rotor has determined the generated frequency of pulse gas, and rotor rotates by a direct current driven by motor, can pass through to regulate the rotating speed of direct current generator, thereby regulates the rotating speed of rotor, the frequency of also just having regulated pulse gas simultaneously.
Claims (3)
1. one kind is used for the continuous rotary valve that EGR valve high-temp waste gas periodic shock fatigue durability is tested, it is characterized in that comprising rotor (1), housing (2), first takes over (3), second takes over (4), front screen (5), sheet under the backboard (6), backboard last slice (7), preceding tooth bar (8), back tooth bar (9), left supported plate (10), bottom right support plate (11), upper right support plate (12), top cover (13), pad (14), capping (15), first gear (16), second gear (17), the 3rd gear (18), axle (19), back shroud (20), front shroud (21), first through hole (22), first groove (23), second groove (24), preceding through hole (25), back through hole (26), the 3rd groove (27), the 4th groove (28), second through hole (29), base (30), EGR valve (31), continuous rotary valve (32), high temperature source of the gas (33), housing (2) both sides are provided with first and take over (3), second takes over (4), the 3rd groove (27), the 4th groove (28), preceding through hole (25), back, back through hole 26), be provided with rotor (1) in the housing (2), rotor (1) is provided with first through hole (22), first groove (23), second groove (24), housing (2) one ends are provided with the left supported plate (10) that is used to lay housing, pad (14), capping (15), one end of rotor (2) is provided with first gear (16), the other end wall of housing (2) is provided with second through hole (29), be provided with the bottom right support plate (11) that is used to lay housing, the upper end of bottom right support plate (11) is provided with upper right support plate (12); Be provided with front screen (5) in the 3rd groove (27), front screen (5) is provided with preceding tooth bar (8), be provided with sheet under the backstop (6) in the 4th groove (28), sheet under the backboard (6) connects backboard last slice (7), backboard last slice (7) is provided with back tooth bar (9), be provided with second gear (17) in the middle of preceding tooth bar (8) and the back tooth bar (9), be provided with axle (19) in second gear, an end of axle (19) is provided with the 3rd gear (18); What connect left and right sides support plate has front shroud (21), back shroud (22), a top cover (13); Left and right sides support plate and front and rear cover plate are placed on the base (30).
2. a kind of continuous rotary valve that is used for the test of EGR valve high-temp waste gas periodic shock fatigue durability according to claim 1 is characterized in that described first gear (16) is connected with direct current generator.
3. a kind of continuous rotary valve that is used for the test of EGR valve high-temp waste gas periodic shock fatigue durability according to claim 1 is characterized in that described the 3rd gear (18) is connected with stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201625560U CN201236755Y (en) | 2008-08-05 | 2008-08-05 | Continuous rotary valve used for EGR valve hot gas periodic impact fatigue endurance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201625560U CN201236755Y (en) | 2008-08-05 | 2008-08-05 | Continuous rotary valve used for EGR valve hot gas periodic impact fatigue endurance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236755Y true CN201236755Y (en) | 2009-05-13 |
Family
ID=40649495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201625560U Expired - Fee Related CN201236755Y (en) | 2008-08-05 | 2008-08-05 | Continuous rotary valve used for EGR valve hot gas periodic impact fatigue endurance test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236755Y (en) |
-
2008
- 2008-08-05 CN CNU2008201625560U patent/CN201236755Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20100805 |