CN110466305A - A kind of ECAS distribution valve assembly - Google Patents
A kind of ECAS distribution valve assembly Download PDFInfo
- Publication number
- CN110466305A CN110466305A CN201910747361.5A CN201910747361A CN110466305A CN 110466305 A CN110466305 A CN 110466305A CN 201910747361 A CN201910747361 A CN 201910747361A CN 110466305 A CN110466305 A CN 110466305A
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- chamber
- control
- distribution
- gas chamber
- driving
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0525—Height adjusting or levelling valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0526—Distributor units, e.g. for retractable wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
- B60G2202/314—The spring being a pneumatic spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/202—Height or leveling valve for air-springs
- B60G2500/2021—Arrangement of valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
- B60G2500/302—Height or ground clearance using distributor valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention relates to automotive fields, specifically disclose a kind of ECAS distribution valve assembly.The ECAS distribution valve assembly includes shell, and at least three groups of distribution modules are equipped in the shell, is equipped in each distribution module and matches pneumatic module and opening/closing component；Described includes the upper chamber being arranged successively in shell, middle gas chamber and lower chamber with pneumatic module；Described further includes valve rod with pneumatic module, and the valve rod is equipped with gas distribution channels；The opening/closing component includes setting in the intracorporal transition gas chamber of shell, and the transition gas chamber is connected to by air flue I with the upper chamber of corresponding distribution module or middle gas chamber or lower chamber, and the opening/closing component further includes opening and closing element；Transition gas chamber between different distribution modules is interconnected.Above-described ECAS distribution valve assembly, the control realized left and right air bag inflation/deflation with single distributing valve, promote axis inflation/deflation and unbalance loading mode, level of integrated system are high.
Description
Technical field
The present invention relates to automotive field more particularly to a kind of ECAS distribution valve assemblies.
Background technique
ECAS, that is, electronically controlled the airsuspension system of car/truck mainly includes electronic control unit, distributing valve, height biography
Components such as sensor, air bag etc. have and support vehicle body, improve the function of seating.
Air bag is the execution unit for controlling suspension, realizes the adjusting to bodywork height by the inflation/deflation of air bag, leads to
Often include the left air bag of rear axle, the right air bag of rear axle, promotes the left air bag of axis, promote axis center sleeve, promote the right air bag of axis.Distributing valve exists
Under the control of electronic control unit, inflation/deflation adjusting is carried out to each air bag.
AIRMATIC Dual Control generally includes following three kinds of operating modes:
Left and right air bag inflation/deflation promotes axis center sleeve at this time and deflates, then to the left air bag of rear axle, the right air bag of rear axle, promotion axis
Left air bag and promotion axis center sleeve are inflated for deflated, to adjust bodywork height；
Axis inflation/deflation is promoted, the left air bag of rear axle, the right air bag of rear axle, the left air bag of promotion axis and the promotion right air bag of axis are put simultaneously at this time
Gas, then to axis center sleeve inflation/deflation is promoted, to adjust bodywork height；
Unbalance loading mode promotes the left air bag of axis, the right air bag of promotion axis, promotion axis center sleeve at this time and is in state of pressure keeping and (exists
Operated during this without inflation/deflation), then according to bodywork height situation, the left air bag of rear axle and the right air bag of rear axle are filled
It deflates and adjusts, to adapt to unbalance loading state.
Conversion and control between above-mentioned three kinds of operating modes need to be completed by distributing valve.In existing AIRMATIC Dual Control
At least need two distributing valves that could complete the control of above-mentioned three kinds of operating modes, the integrated level of structure is not high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ECAS distribution valve assemblies, realize left and right gas with single distributing valve
Capsule inflation/deflation, the control for promoting axis inflation/deflation and unbalance loading mode, level of integrated system are high.
In order to solve the above technical problem, the present invention provides technical solution it is as follows: a kind of ECAS distribution valve assembly, including
Shell, the shell is interior to be equipped at least three groups of distribution modules, is equipped in each distribution module with pneumatic module and opening and closing
Component；
Described with pneumatic module includes the upper chamber being arranged successively in shell, middle gas chamber and lower chamber, the upper chamber, in
Gas chamber and lower chamber are respectively equipped with distribution interface；Interface channel, the middle gas are equipped between the upper chamber and middle gas chamber
Interface channel is equipped between room and lower chamber；Described further includes sequentially passing through two interface channels and leading to connecting with pneumatic module
The valve rod that road is slidingly sealed, the valve rod are equipped with gas distribution channels；
The opening/closing component includes setting in the intracorporal transition gas chamber of shell, and the transition gas chamber is matched by air flue I with corresponding
The upper chamber of gas module or the connection of middle gas chamber or lower chamber, the opening/closing component further include the opening and closing member for controlling air flue I on-off
Part；
Transition gas chamber between different distribution modules is interconnected.
It is each interior equipped with upper chamber, middle gas chamber and lower chamber, corresponding upper chamber, middle gas chamber and lower chamber point with pneumatic module
Not She You distribution interface, distribution interface is used to connect with air inlet, exhaust and each air bag.Match for three and passes through opening and closing between pneumatic module
Component connection, and on-off is controlled by opening/closing component.By match pneumatic module and opening/closing component cooperation, control each air bag into
Gas and exhaust, thus the control realized left and right air bag inflation/deflation, promote axis inflation/deflation and unbalance loading mode, level of integrated system is high.
Preferably, the opening and closing element includes normally closed valve plate corresponding with air flue I, and opened for controlling normally closed valve plate
The driving spool closed.
Preferably, the driving spool is arranged in transitional gas room；It is additionally provided with exhaust outlet on the shell, wherein
The transition gas chamber of one distribution module is connected to by air flue II with exhaust outlet, and the driving spool in corresponding distribution module controls air flue
The on-off of II.
Preferably, the cavity wall of the driving spool and transition gas chamber is slidingly sealed, and transition gas chamber is divided into upper transition
Gas chamber and lower transition gas chamber, the air flue I and air flue II are connect with lower transition gas chamber respectively；
It further include the first control module, first control module includes and the one-to-one first control group of distribution module
Part, each first control assembly include being arranged in intracorporal first control chamber of shell, and first control chamber is set respectively
There are the first inlet channel, first exhaust passage and the first control channel, the first inlet channel connection control gas source is described
The first control channel be connected to upper transition gas chamber；
The first valve body of control the first inlet channel and first exhaust passage on-off is additionally provided in first control chamber.
Preferably, the gas distribution channels include the groove for being distributed in valve rod side；It is recessed along shaft length direction
The length of slot is greater than the length of interface channel, and is less than or equal to the length of middle gas chamber.
Preferably, described further includes driving unit with pneumatic module, the driving unit driving stem is relative to even
Connect road sliding.
Preferably, the driving unit includes driving gas chamber, fortune synchronous with valve rod is equipped in the driving gas chamber
Dynamic piston body, the side of the piston body are distributed along its length there are two annular groove, are formed between two neighboring sliding slot
Changeover portion；Piston ring, the side wall of the bottom and driving gas chamber of the piston ring and sliding slot are respectively equipped in two annular grooves
It is slidingly sealed respectively；The piston body and piston ring will drive gas chamber to be divided into upper driving chamber and lower driving chamber；The driving gas
The side wall of room is equipped with blocking portion corresponding with piston ring, and the blocking portion is located between two piston rings, the blocking portion
It is not contacted with changeover portion.
There are three types of operating modes for drive module, and being respectively as follows: 1. individually ought be passed through high drive gas source, piston to upper driving chamber
Body moves to limit inferior position under air pressure driving；2. high drive gas source individually ought be passed through to lower driving chamber, piston body is in air pressure
Limes superiors position is moved under driving；3. when simultaneously, driving chamber and upper driving chamber are same as high drive gas source, piston body movement down
To intermediate equilibria position, at this point, two piston rings move to blocking portion position, meanwhile, promotion of the piston body in two piston rings
Under, it is also at middle position.
Three kinds of operating modes of drive module and three kinds of operating modes of distribution module correspond, and piston body passes through driving
Stem movement realizes the switching of three kinds of operating modes of distribution module.
The core of the application drive module is, by the setting of two piston rings and blocking portion, cleverly realizes and removes
The determination of intermediate equilibria position except high-low limit position, and then realize the accurate positionin of three operating modes.
Preferably, forming adapter cavity between two piston rings, the adapter cavity is connected to exhaust outlet.For
During piston body and piston ring move, the air pressure of adapter cavity is balanced.
Preferably, further including the second control module, second control module controls three in pneumatic module respectively
The air pressure of upper driving chamber and lower driving chamber.
Preferably, second control module includes two group of second control assembly, each second control group
Part includes being arranged in intracorporal second control chamber of shell, and second control chamber is respectively equipped with the second inlet channel, second exhaust
Channel and the second control channel, the second inlet channel connection control gas source；Control is additionally provided in first control chamber
Make the second valve body of the second inlet channel and second exhaust channel on-off；Each upper driving chamber with pneumatic module and wherein one
The control channel connection of the second control assembly of group, lower driving chamber are connected to the control channel of another group of the second control assembly.
Detailed description of the invention
Fig. 1 is the main view of the present embodiment ECAS distribution valve assembly；
Fig. 2 is the side view of the present embodiment ECAS distribution valve assembly；
Fig. 3 is A-A view in Fig. 1；
Fig. 4 is B-B view in Fig. 1；
Fig. 5 is C-C view in Fig. 1；
Fig. 6 is D-D view in Fig. 2；
Fig. 7 is E-E view in Fig. 2；
Fig. 8 be the present embodiment ECAS distribution valve assembly in opening/closing component structural schematic diagram, which includes with the opening/closing component
Corresponding first control assembly；
Fig. 9 is the structural schematic diagram of the second control module in the present embodiment ECAS distribution valve assembly；
Figure 10 is the structural schematic diagram of driving unit in the present embodiment ECAS distribution valve assembly；
Figure 11 is the partial schematic diagram for matching pneumatic module in the present embodiment ECAS distribution valve assembly；
Figure 12 is the status diagram of driving assembly under different working modes.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment
As shown in Fig. 1-Fig. 7, a kind of ECAS distribution valve assembly, including shell, the shell is interior to be equipped with three groups of distribution moulds
Block 6, respectively distribution module I 6a, distribution module ii 6b and distribution module ii I 6c, the distribution module I 6a include matching
Pneumatic module I 8a and opening/closing component I 7a, the distribution module ii 6b include matching pneumatic module II 8b and opening/closing component II
7b, the distribution module ii I 6c include matching pneumatic module III 8c and opening/closing component III 7c.
As shown in Fig. 1 and Figure 11, it is each it is described with pneumatic module 8 include the upper chamber 87 being arranged successively in shell, in
Gas chamber 86 and lower chamber 85, the upper chamber 87, middle gas chamber 86 and lower chamber 85 are respectively equipped with distribution interface 2, the distribution
The distribution of interface is as shown in figure 1 shown in 2a ~ 2g.Distribution interface 2a and external air source wherein with upper chamber 87 in pneumatic module I 8a connect
It connects, the distribution interface 2b with middle gas chamber 86 in pneumatic module I 8a is connect with axis center sleeve is promoted；With gas upper in pneumatic module II 8b
The distribution interface 2c of room 87 is connect with the left air bag of rear axle, the distribution interface 2d with middle gas chamber 86 in pneumatic module II 8b and promotion axis
Left air bag connection；Distribution interface 2e with upper chamber 87 in pneumatic module III 8c is connect with the right air bag of rear axle, matches pneumatic module III
The distribution interface 2f of middle gas chamber 86 is connect with the right air bag of axis is promoted in 8c；With pneumatic module I 8a, match pneumatic module II 8b and distribution group
The distribution interface 2g of lower chamber 85 is interconnected and connect with pressure limiting valve in part III 8c.
As shown in figure 11, each to match between upper chamber 87 and middle gas chamber 86 described in pneumatic module 8 equipped with interface channel, institute
Interface channel is equipped between the middle gas chamber 86 stated and lower chamber 85.Described further includes sequentially passing through two connections with pneumatic module 8
Channel and the valve rod 83 being slidingly sealed with interface channel, the valve rod 83 are equipped with gas distribution channels 84.The gas distribution channels
84 include the groove for being distributed in 83 side of valve rod；Along 83 length direction of valve rod, the length of groove is greater than the length of interface channel
Degree, and it is less than or equal to the length of middle gas chamber 86.
As shown in figure 8, each opening/closing component 7 includes being arranged in the intracorporal transition gas chamber 76 of shell, different distribution moulds
Transition gas chamber 76 between block 6 is interconnected.The transition gas chamber 76 by air flue I 75 and corresponding distribution module 6 with it is upper
Gas chamber 87 is connected to (being connected to remaining gas chamber can also realize, but need to reasonably adjust the component in each distribution interface external world), described
Opening/closing component 7 further include control 75 on-off of air flue I opening and closing element 73.The opening and closing element 73 includes and air flue I 75
Corresponding normally closed valve plate 731, and the driving spool 72 being opened and closed for controlling normally closed valve plate 731.
As shown in figure 3, being additionally provided with exhaust outlet 5 on the shell, the transition gas chamber 76 of opening/closing component I 7a passes through air flue
II 74 is connected to exhaust outlet 5, and the driving spool 72 in corresponding distribution module 6 controls the on-off of air flue II 74.
As shown in figures 3 and 8, the driving spool 72 is arranged in corresponding transition gas chamber 76, the driving spool
72 are slidingly sealed with the cavity wall of transition gas chamber 76, and transition gas chamber 76 is divided into upper transition gas chamber 76 and lower transition gas chamber 76.Institute
The air flue I 75 and air flue II 74 stated is connect with lower transition gas chamber 76 respectively.
As shown in Figure 10, each pneumatic module 8 of matching further includes driving unit 82, and the driving unit 82 drives valve
Bar 83 is slided relative to interface channel.The driving unit 82 includes driving gas chamber, is equipped in the driving gas chamber and valve
The piston body 821 that bar 83 moves synchronously, the side of the piston body 821 are distributed along its length there are two annular groove 822, phase
Changeover portion 827 is formed between adjacent two sliding slots；Piston ring 825, the piston ring are respectively equipped in two annular grooves 822
825 are slidingly sealed respectively with the bottom of annular groove 822 and the side wall of driving gas chamber；The piston body 821 and piston ring 825
Driving gas chamber is divided into upper driving chamber 828 and lower driving chamber 824；The side wall of the driving gas chamber is equipped with corresponding with piston ring 825
Blocking portion 826, the blocking portion 826 is located between two piston rings 825, and the blocking portion 826 and changeover portion 827 are not
Contact.Adapter cavity 823 is formed between two piston rings 825, the adapter cavity 823 is connected to exhaust outlet 5.For in work
During cock body 821 and piston ring 825 move, the air pressure of adapter cavity 823 is balanced.
It as shown in Figure 6 and Figure 8, further include the first control module, first control module includes and distribution module 6 one
One corresponding first control assembly 3, respectively the first control assembly I 3a, the first control assembly II 3b and the first control assembly
III 3c, the first control assembly I 3a is corresponding with opening/closing component I 7a, the first control assembly II 3b and opening/closing component II
7b is corresponding, and the first control assembly III 3c is corresponding with opening/closing component III 7c.
As shown in figure 8, each first control assembly 3 includes setting in intracorporal first control chamber of shell, it is described
First control chamber is respectively equipped with the first inlet channel 32, first exhaust passage 31 and the first control channel 33, described first into
The connection of gas channel 32 control gas source, first control channel 33 are connected to upper adapter cavity 823；In first control chamber
It is additionally provided with the first valve body 34 of control the first inlet channel 32 and 31 on-off of first exhaust passage.
It as shown in figures 7 and 9, further include the second control module, second control module includes two group of second control
Component 4, respectively the second control assembly I 4a and the second control assembly II 4b.
As shown in figure 9, each second control assembly 4 includes setting in intracorporal second control chamber of shell, it is described
Second control chamber is respectively equipped with the second inlet channel 44, second exhaust channel 42 and the second control channel 45, described second into
The connection of gas channel 44 control gas source.The second inlet channel 44 of control and second exhaust channel are additionally provided in first control chamber
Second valve body 43 of 42 on-off.The structure and control principle of first control assembly 3 and the second control assembly 4 are essentially identical.
As shown in figure 9, the second control channel 45 of the second control assembly I 4a and the lower driving for matching pneumatic module I 8a
Chamber 824 is connected to, and is connected to simultaneously with the upper driving chamber 828 with pneumatic module II 8b and with pneumatic module III 8c.Second control
The second control channel 45 of component II 4b is connected to the upper driving chamber 828 with pneumatic module I 8a, and simultaneously and with pneumatic module II
8b is connected to the lower driving chamber 824 with pneumatic module III 8c.
First below by taking one of distribution module as an example, illustrate the working principle with pneumatic module and opening/closing component:
As shown in figure 8, the first inlet channel 32 as the first control assembly I 3a is opened, first exhaust passage 31 is closed, external
Gas source reaches upper adapter cavity 823 from the first control channel 33, pushes driving spool 72 to move to normally closed valve plate 731, finally and often
Valve closing plate 731, which contacts and overcomes, opens normally closed valve plate 731, and then opens air flue I 75.When the first of the first control assembly I 3a
Inlet channel 32 is closed, and first exhaust passage 31 is opened, and the air pressure of upper adapter cavity 823 is discharged from first exhaust passage 31, normally closed
Valve plate 731, which resets, closes air flue I 75, while driving spool 72 being pushed to reset.
When the second inlet channel 44 of the second control assembly II 4b is opened, second exhaust channel 42 is closed, and the second control
The second inlet channel 44 of component I 4a processed is closed, and second exhaust channel 42 is opened, and external gas source passes through the second control assembly II
The second control channel 45 of 4b enters upper driving chamber 828, with the second exhaust of driving chamber 824 and the second control assembly I 4a at present
Channel 42 is connected to.The air pressure of upper driving chamber 828 is greater than the air pressure of lower driving chamber 824 at this time, under air pressure promotion, piston body 821
Limit inferior position is moved downwardly to piston ring 825.Limit inferior position with the corresponding piston ring 825 of upper driving chamber 828 to contact
Blocking portion 826, and subject to piston ring 825 contacts with the upper cell wall of corresponding sliding slot.Since valve body and piston body 821 move synchronously,
Valve body also moves into limit inferior position, as indicated in fig. 12 c state, and middle gas chamber 86 is connected to lower chamber 85 at this time.
When the second inlet channel 44 of the second control assembly II 4b is closed, second exhaust channel 42 is opened, and the second control
The second inlet channel 44 of component I 4a processed is opened, and second exhaust channel 42 is closed, and external gas source passes through the second control assembly I
The second control channel 45 of 4a enters lower driving chamber 824, the second exhaust channel of upper driving chamber 828 and the second control channel 45 2
42 connections.This at present driving chamber 824 air pressure be greater than lower driving chamber 824 air pressure, under the promotion of air pressure, 821 He of piston body
Piston ring 825 moves up to limes superiors position.Limes superiors position contacts blocking portion with piston ring 825 corresponding with lower driving chamber 824
826, and subject to piston ring 825 contacts with the lower cell wall of corresponding sliding slot.Since valve body and piston body 821 move synchronously, valve body
Limes superiors position is moved to, as illustrated in fig. 12 state, upper chamber 87 is connected to middle gas chamber 86 at this time.
When the second inlet channel 44 of the second control assembly I 4a and the second control assembly II 4b are opened simultaneously, second row
Gas channel 42 simultaneously closes off,
Upper driving chamber 828 and lower driving chamber 824 are connected to external gas source at this time.Two piston rings 825 are analyzed, due to
The air pressure of upper driving chamber 828 and lower driving chamber 824 is all larger than adapter cavity 823, so two piston rings 825 are in the promotion of air pressure
It is lower to be slided to blocking portion 826.Independent analysis is carried out to piston body 821, draught head and piston ring 825 and changeover portion 827 at both ends
Thrust after contact pushes lower movement jointly, and it is corresponding with blocking portion 826 to move to changeover portion 827, at least one of which piston ring
825 with blocking portion 826 contact when, can reach mechanical balance state.At this point, since valve body and piston body 821 move synchronously, valve body
Intermediate equilibria position is also moved into, two gas distribution channels 84 are turned off at this time, and upper chamber 87, middle gas chamber 86 and lower chamber 85 are uniformly distributed
Connection, i.e., state as shown in Figure 12 B.
By taking attached drawing 12B state as an example, the stress condition of equilibrium state lower piston body 821 is illustrated, due to piston body 821
End corresponding with lower driving chamber 824 is connect with valve rod 83, so the upper end compression area of piston body 821 is greater than the compression of lower end
The resultant force of area, both ends air pressure is downward, has the trend moved downward.Two piston rings 825 all have piston body 821 at this time
Upward active force (frictional force or the thrust transmitted by changeover portion 827) is formed to balance because of compression area difference
Resultant force downwards, is finally reached equilibrium state.
Below with reference to the specific structure of ECAS distribution valve assembly, the working principle of AIRMATIC Dual Control is described in detail:
1. the left air bag of rear axle, the right air bag of rear axle promote the left air bag of axis, promote the right air bag inflation of axis
Original state is that the valve rod 83 with pneumatic module I 8a is located at limit inferior position, with pneumatic module II 8b and matches pneumatic module III 8c
Valve rod 83 be located at limes superiors position (state can by open the second control assembly II 4b realize), namely promoted axis among gas
Capsule is connected to pressure limiting valve, promotes the left air bag of axis is connected to the left air bag of rear axle, promotes the right air bag of axis is connected to the right air bag of rear axle.At this time
It is in a deflated state to promote axis center sleeve.
The first control assembly I 3a, the first control assembly II 3b, the first control assembly III 3c are opened, the first control is made
The first inlet channel 32 and the first control channel of component I 3a, the first control assembly II 3b and the first control assembly III 3c
33 connections, and further the corresponding driving spool 72 of driving moves downward, and opens normally closed valve plate 731, opens air flue I 75, simultaneously
Driving spool 72 in opening/closing component I closes air flue II 74.
External gas source enters from the upper chamber 87 with pneumatic module I 8a at this time, passes through the air flue I 75 in opening/closing component I 8a
Into lower adapter cavity 823, and is entered by the air flue I 75 in opening/closing component II 7b and opening/closing component III 7c and match pneumatic module II
8b and upper chamber 87 and middle gas chamber 86 with pneumatic module III 8c, to the left air bag of rear axle, the right air bag of rear axle, promoted the left air bag of axis,
Promote the right air bag inflation of axis.After first control assembly I 3a, the first control assembly II 3b, the first control assembly III 3c are closed,
State remains unchanged.
2. the left air bag of rear axle, the right air bag of rear axle promote the left air bag of axis, promote right air bag deflation
Under the premise of rear axle or so air bag, promoting the inflation of axis or so air bag, the first control assembly I 3a is closed, opens the first control
Component II 3b processed, the first control assembly III 3c.At this point, the air flue I 75 in opening/closing component I 7a is closed by normally closed valve plate 731
It closes, while air flue II 74 is opened；Air flue I 75 in opening/closing component II 7b and opening/closing component III 7c is opened.
Since the air flue I 75 in opening/closing component I 7a is closed, external gas source cannot be introduced into pneumatic module II 8b and match
Pneumatic module III 8c.Simultaneously because air flue II 74, the air flue I 75 in opening/closing component II 7b, the gas in opening/closing component III 7c
Road I 75 is opened, and the left air bag of rear axle, the right air bag of rear axle promote the left air bag of axis, promote the air pressure of right air bag from 74 row of air flue II
Out, the left air bag of rear axle, the right air bag of rear axle, the left air bag of promotion axis, the right air bag of promotion are deflated.First control assembly II 3b, the first control
State remains unchanged after component III 3c processed is closed.
3. promoting the inflation of axis center sleeve
Original state is the left air bag of rear axle, the right air bag of rear axle, the left air bag of promotion axis, the right air bag of promotion are deflated.
Open the second control assembly I 4a, second tri- the first control assemblies of control assembly II 4b(of closing are in closing
State), the inlet channel in the second control assembly I 4a is connected to control channel, and with the lower driving chamber of matching pneumatic module I 8a
824 connections, the valve rod 83 with pneumatic module I 8a moves to limes superiors position in the case where the air pressure of lower driving chamber 824 pushes, external at this time
Gas source is connected to axis center sleeve is promoted, and is inflated to axis center sleeve is promoted.State remains unchanged after power-off.
4. promoting axis center sleeve to deflate
In the case where promoting axis center sleeve inflated condition, opens the second control assembly II 4b, closes the second control assembly I 4a(tri-
A first control assembly is in closed state), the inlet channel in the second control assembly II 4b is connected to control channel, and
It is connected to the lower driving chamber 824 with pneumatic module II 8b, the valve rod 83 with pneumatic module I 8a is pushed in the air pressure of upper driving chamber 828
Under move to limit inferior position, at this time promoted axis center sleeve be connected to pressure limiting valve, promotion axis center sleeve in high-pressure air source from
Pressure limiting valve discharge is completed to promote the deflation of axis center sleeve.State remains unchanged after power-off.
5. unbalance loading state
Original state is the left air bag of rear axle, the right air bag of rear axle, promotes the left air bag of axis, promotes the right air bag inflation of axis, is promoted among axis
Air bag is deflated.
The second control assembly I 4a and the second control assembly II 4b are opened simultaneously, and three equal with the valve rod 83 in pneumatic module 4
In intermediate state (specific implementation principle is as detailed above), at this point, three upper chamber 87, the middle gas chambers matched in pneumatic module 4
It is not connected between 86 and lower chamber 85.Then according to the loaded situation of vehicle body, pass through opening for three the first control assemblies 3 of control
It closes, inflation/deflation operation is carried out to the left air bag of rear axle and the right air bag of rear axle, to adapt to the unbalance loading state of vehicle body.
In short, the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all in the present invention
Spirit and principle within made any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of ECAS distribution valve assembly, it is characterised in that: including shell, at least three groups of distribution modules are equipped in the shell
(6a, 6b, 6c), be equipped in each distribution module (6a, 6b, 6c) with pneumatic module (8a, 8b, 8c) and opening/closing component (7a,
7b, 7c)；
Described includes the upper chamber (87) being arranged successively in shell, middle gas chamber (86) He Xiaqi with pneumatic module (8a, 8b, 8c)
Room (85), the upper chamber (87), middle gas chamber (86) and lower chamber (85) be respectively equipped with distribution interface (2a, 2b, 2c, 2d,
2e, 2f, 2g)；Interface channel, described middle gas chamber (86) He Xiaqi are equipped between the upper chamber (87) and middle gas chamber (86)
Interface channel is equipped between room (85)；It is described with pneumatic module (8a, 8b, 8c) further include sequentially pass through two interface channels and with
The valve rod (83) that interface channel is slidingly sealed, the valve rod (83) are equipped with gas distribution channels (84)；
The opening/closing component (7a, 7b, 7c) includes being arranged in the intracorporal transition gas chamber (76) of shell, the transition gas chamber (76)
Connected by air flue I(75) with the upper chamber (87) of corresponding distribution module (6a, 6b, 6c) or middle gas chamber (86) or lower chamber (85)
Logical, the opening/closing component (7a, 7b, 7c) further includes controlling air flue I(75) the opening and closing element (73) of on-off；
Transition gas chamber (76) between different distribution modules (6a, 6b, 6c) is interconnected.
2. ECAS distribution valve assembly according to claim 1, it is characterised in that: the opening and closing element (73) includes and gas
Road I(75) corresponding normally closed valve plate (731), and the driving spool (72) for controlling normally closed valve plate opening and closing.
3. ECAS distribution valve assembly according to claim 2, it is characterised in that: the driving spool (72) is arranged in mistake
It crosses in gas chamber (76)；It is additionally provided on the shell exhaust outlet (5), the transition gas chamber of one of distribution module (6a, 6b, 6c)
(76) pass through air flue II(74) it is connected to exhaust outlet (5), driving spool (72) control in corresponding distribution module (6a, 6b, 6c)
Air flue II(74) on-off.
4. ECAS distribution valve assembly according to claim 3, it is characterised in that:
Driving spool (72) and the cavity wall of transition gas chamber (76) are slidingly sealed, and transition gas chamber (76) is divided into upper transitional gas
Room (78) and lower transition gas chamber (76), the air flue I(75) and air flue II(74) connect respectively with lower transition gas chamber (76)；
It further include the first control module, first control module includes and distribution module (6a, 6b, 6c) one-to-one
One control assembly (3a, 3b, 3c), each first control assembly (3a, 3b, 3c) include setting in intracorporal first control of shell
Chamber processed, first control chamber are respectively equipped with the first inlet channel (32), first exhaust passage (31) and the first control channel
(33), first inlet channel (32) connection control gas source, first control channel (33) and upper transition gas chamber
(78) it is connected to；
The first of control the first inlet channel (32) and first exhaust passage (31) on-off is additionally provided in first control chamber
Valve body (34).
5. ECAS distribution valve assembly according to claim 1, it is characterised in that: the gas distribution channels (84) include distribution
Groove in valve rod (83) side；Along valve rod (83) length direction, the length of groove is greater than the length of interface channel, and small
In or be equal to middle gas chamber (86) length.
6. ECAS distribution valve assembly according to any one of claims 1-5, it is characterised in that: described matches pneumatic module
(8a, 8b, 8c) further includes driving unit (82), and the driving unit (82) driving stem (83) is sliding relative to interface channel
It is dynamic.
7. ECAS distribution valve assembly according to claim 6, it is characterised in that: the driving unit (82) includes driving
Gas chamber, the driving gas chamber is interior to be equipped with the piston body (821) moved synchronously with valve rod (83), the side of the piston body (821)
Face is distributed along its length there are two annular groove (822), forms changeover portion (827) between two neighboring sliding slot；Two annulars
It is respectively equipped with piston ring (825) in sliding slot (822), the side wall of the bottom and driving gas chamber of the piston ring (825) and sliding slot
It is slidingly sealed respectively；
The piston body (821) and piston ring (825) will drive gas chamber to be divided into upper driving chamber (828) and lower driving chamber (824)；
The side wall of the driving gas chamber is equipped with blocking portion (826) corresponding with piston ring (825), the blocking portion (826) position
Between two piston rings (825), the blocking portion (826) is not contacted with changeover portion (827).
8. ECAS distribution valve assembly according to claim 7, it is characterised in that: shape between two piston rings (825)
At adapter cavity (823), the adapter cavity (823) is connected to exhaust outlet (5).
9. ECAS distribution valve assembly according to claim 7, it is characterised in that: it further include the second control module, it is described
Second control module controls three gas with driving chamber (828) and lower driving chamber (824) upper in pneumatic module (8a, 8b, 8c) respectively
Pressure.
10. ECAS distribution valve assembly according to claim 9, it is characterised in that: second control module includes two
Group the second control assembly (4a, 4b),
Each second control assembly (4a, 4b) includes setting in intracorporal second control chamber of shell, second control
Chamber is respectively equipped with the second inlet channel (44), second exhaust channel (42) and the second control channel (45), second air inlet
Channel (44) connection control gas source；It is additionally provided with control the second inlet channel (44) in first control chamber and second exhaust is logical
Second valve body (43) of road (42) on-off；
Each upper driving chamber (828) with pneumatic module (8a, 8b, 8c) and wherein one group of second control assembly (4a, 4b)
The control channel of control channel connection, lower driving chamber (824) and another group of the second control assembly (4a, 4b) is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747361.5A CN110466305B (en) | 2019-08-14 | 2019-08-14 | ECAS distributing valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747361.5A CN110466305B (en) | 2019-08-14 | 2019-08-14 | ECAS distributing valve assembly |
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| Publication Number | Publication Date |
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| CN110466305A true CN110466305A (en) | 2019-11-19 |
| CN110466305B CN110466305B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910747361.5A Active CN110466305B (en) | 2019-08-14 | 2019-08-14 | ECAS distributing valve assembly |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046330A (en) * | 2021-09-23 | 2022-02-15 | 东科克诺尔商用车制动技术有限公司 | Automobile air suspension electromagnetic control valve |
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| Publication number | Publication date |
|---|---|
| CN110466305B (en) | 2022-11-25 |
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