CN201201584Y - Pressure control valve of buffer air inlet system for automobile - Google Patents
Pressure control valve of buffer air inlet system for automobile Download PDFInfo
- Publication number
- CN201201584Y CN201201584Y CNU2008200328336U CN200820032833U CN201201584Y CN 201201584 Y CN201201584 Y CN 201201584Y CN U2008200328336 U CNU2008200328336 U CN U2008200328336U CN 200820032833 U CN200820032833 U CN 200820032833U CN 201201584 Y CN201201584 Y CN 201201584Y
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- China
- Prior art keywords
- valve
- pressure
- retarder
- electromagnetic switch
- control valve
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- Expired - Fee Related
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Abstract
The utility model discloses a pressure control valve of a vehicle retarder air inlet system, a control unit is connected with an electromagnetic switch valve from an inlet end of the pressure control valve, an outlet end of the electromagnetic switch valve is communicated with an oil groove, the pressure control valve is composed of the electromagnetic switch valve, a proportional electromagnetic valve and a leather bowl, the control unit is connected with the electromagnetic switch valve and the proportional electromagnetic valve respectively from the inlet end, an output end of the proportional electromagnetic valve is communicated with an input end of the leather bowl, the leather bowl outputs air current after communicating with an aeration pipe, the valve body of the proportional electromagnetic valve is a spool slide valve type structure, a fixed spool is internally sleeved with a movable spool, a preloading spring and a return spring are arranged on outer rings of two ends of the movable spool and are placed on the left and right ends of the fixed spool, and a stop block is fixed on the far right end of the movable spool. The utility model has strong capacity of resisting disturbance and short delay time, can increase the dynamic response property and the braking stability of the system.
Description
Technical field
The utility model relates to a kind of automobile-used hydrodynamic retarder, particularly the control cock in its air system.
Background technology
Thereby hydrodynamic retarder is a cover that increases in existing brake system to be acted on the vehicle drive system, based on energy conversion principle, change automobile kinetic energy into a kind of safe complemental brake system that heat energy slows down automobile rapidly.
The hydrodynamic retarder air system is actually a gas, liquid linkage control device, is to be control agent with the pressurized air, utilizes gaseous tension that the mode that fluid is pressed into epitrochoidal chamber is worked.When retarder is worked, pour a certain amount of operating fluid rapidly for the epitrochoidal chamber of retarder, guarantee that retarder produces the braking torque that requires in the specific time scope, brake vehicle slowly; When removing the brake action of retarder, rapidly the operating fluid in the epitrochoidal chamber is discharged at short notice, recover the cruising state of vehicle, reduce unnecessary kinetic energy rejection.
The pressure-gradient control valve of traditional air system is a two position three-way valve, regulates size of gaps according to the size of cylinder and initial tension of spring, and then changes the gaseous tension in the oil groove, reaches to change the purpose that liquid filled ratio is regulated lock torque.But the defective of this pressure-gradient control valve is: response, retarder when (1) provides response that retarder brake activation signal begins to work to retarder, gear change from chaufeur are received the brake off signal and hysteresis phenomenon occurred to the response that retarder withdraws from braking.Can not within its actv. operating range, keep lock torque stably when (2) retarder is worked.
Summary of the invention
The utility model is for overcoming the deficiencies in the prior art, and a kind of faster pressure-gradient control valve of the retarder for vehicles air system of property and stability that has is provided.
The technical solution adopted in the utility model is: control unit connects electromagnetic switch valve from the inlet side of pressure-gradient control valve, the end that goes out of electromagnetic switch valve is communicated with oil groove, pressure-gradient control valve is made up of electromagnetic switch valve, proportion magnetic valve and leather cup, control unit is connected with proportion magnetic valve with electromagnetic switch valve respectively from the inlet side, the output of proportion magnetic valve is communicated with the input of leather cup, output gas flow behind the leather cup connection breather pipe.
The valve body of proportion magnetic valve is the spool slide-valve structure, is with movable valve plug in fixed valve plug, and preloading spring and pull back spring are arranged on the outer ring, two ends of movable valve plug and are positioned at the two ends, the left and right sides of fixed valve plug, and link stopper is fixed on the movable valve plug low order end.
The utility model is owing to adopt the solenoid-operated proportional control cock, and antijamming capability is strong, delay time is short, improves the dynamic response characteristic and the insensitivity of system.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the outside connection diagram of pressure-gradient control valve 2 in the retarder air system;
Fig. 2 is the inner structure composition diagram of pressure-gradient control valve 2 among Fig. 1;
Fig. 3 is the cut-away view of proportion magnetic valve 6 among Fig. 2;
Fig. 4 is the principle of work sketch of leather cup 4 among Fig. 2.
The specific embodiment:
As shown in Figure 1, the hydrodynamic retarder air system is mainly by the operating control of retarder, control unit 1, source of the gas, pressure-gradient control valve 2, the intrinsic epitrochoidal chamber of retarder, compositions such as oil groove 4 and inner flow passage, wherein control unit 1 connects its electromagnetic switch valve 5 from the inlet side of pressure-gradient control valve 2, the effect of pressure-gradient control valve 2 is exactly to enter compressed-air actuated pressure in the oil groove 4 according to the requirement adjustment of controlling, when retarder is worked, the signal that is sent according to control unit 1, under the state of source of the gas air feed, utilize the gas of oil groove top that operating fluid is pressed into the retarder epitrochoidal chamber, implement braking slowly; When the retarder exhaust, receive the signal of control unit 1, make gaseous tension decline in the oil groove 4 by pressure-gradient control valve 2, operating fluid is got back to oil groove 4 by the retarder epitrochoidal chamber, removes slow brake action.
As shown in Figure 2, pressure-gradient control valve 2 is made up of electromagnetic switch valve 5, proportion magnetic valve 6 and the leather cup 7 of two-bit triplet, control unit 1 is connected with proportion magnetic valve 6 with electromagnetic switch valve 5 respectively from the inlet side, the output of proportion magnetic valve 6 is communicated with the input of leather cup 7, and leather cup 7 connects breather pipe 8 back output gas flows.As shown in Figure 3, the structure of proportion magnetic valve 6 is that its valve body is the spool sliding valve structure, be with movable valve plug 9 in fixed valve plug 10, preloading spring 13 and pull back spring 11 are arranged on the outer ring at two ends of movable valve plug 9 and are positioned at the two ends, the left and right sides of fixed valve plug 10, and link stopper 12 is fixed on movable valve plug 9 low order ends.This proportion magnetic valve 6 gives the retarder oil groove 4 inflations as the master air suction valve of retarder; Utilize electromagnetic switch valve 5 to be epitrochoidal chamber pressure changeover valve air feed, and utilize this epitrochoidal chamber to be communicated with the pressure stability that two-position three way pressure changeover valve 3 is regulated oil groove 4 and epitrochoidal chamber.As shown in Figure 4, the similar two-position three-way valve of leather cup 4 utilizes two ends gas differential pressure action, realizes the exhaust and the gear shift conversion of retarder.During work, output gas acts on the link stopper 12 by valve core cavity, forms pressure feedback, makes the valve body delivery pressure stable.Valve body movable valve plug 9 under the electromagnetic force effect is opened, gas output, and pull back spring 11 resets.Proportion magnetic valve 6 spool strokes are adjustable, and range is 3mm.Movable valve plug 9 is opened under the effect of electromagnetic force, and after electromagnetic force on the spool and the spring force balance, the aperture of valve is constant, and when the electromagnetic force on acting on spool changed, the aperture of valve also changed, thereby reaches the purpose of control presssure.
Principle of the present utility model is to make the gear change of the dutycycle of impulse singla according to retarder, and the frequency and the amplitude of pulse are constant.To be added on the proportion magnetic valve 6 after this impulse singla amplification, then proportion magnetic valve 6 is in the pulse duration modulation state.Utilize the method control ratio electromagnetic valve 6,, provide different dutycycles when hydrodynamic retarder during at different gears, the delivery pressure of control valve body, and then control oil groove 4 gaseous tension, guarantee the filling amount of retarder epitrochoidal chamber to make retarder be in the slow braking mode of corresponding gear.Specific as follows: pressure-gradient control valve 2 enters compressed-air actuated pressure in the oil groove 4 according to the requirement adjustment of control, when retarder is worked, the signal that is sent according to control unit 1, under the state of source of the gas air feed, the pressure that adopts control ratio electromagnetic valve 6 output gases is inflation in the retarder oil groove 4, utilize the gas of oil groove 4 tops that operating fluid is pressed into the retarder epitrochoidal chamber, in this process, provide control gaseous by electromagnetic switch valve 5 for the epitrochoidal chamber pressure changeover valve, regulate oil groove 4 and epitrochoidal chamber pressure, make the gaseous tension in the oil groove 4 can keep constant, and then the filling amount in the assurance epitrochoidal chamber, make retarder provide stable lock torque to implement slow braking.When the retarder exhaust, chaufeur is given control unit 1 energizing signal by operating control, control unit 1 carries out release by pressure-gradient control valve 2, proportion magnetic valve 6 quits work, and utilize the pressure official post breather pipe and the stabilivolt at leather cup 7 two ends to communicate this moment, and gas is through the retarder inner chamber, discharge by silencer 14 at last, gaseous tension reduces in the oil groove 4, and operating fluid flows back to oil groove 4, removes the brake action of retarder.When the slow transforming gear of retarder, be to regulate by the gas pressure balancing at leather cup 7 two ends.Its work is the delivery pressure variation by proportion magnetic valve 6 in the pressure-gradient control valve 2, and then changes the pressure reduction at leather cup 7 two ends, and leather cup 7 occurrence positions are changed.Leather cup 7 has two kinds of mode of operations: a kind of is leather cup 7 left side oil groove gaseous tensions during less than right side proportion magnetic valve 6 intake pressure, and gas is exported by stabilivolt by it through behind the proportion magnetic valve 6, gives oil groove 4 air feed of retarder; Another kind is when oil groove 4 gaseous tensions in left side during greater than proportion magnetic valve 6 intake pressure, and its reverse mobile stabilivolt and breather pipe are communicated, and gas is discharged through retarder from breather pipe.
Claims (4)
1. the pressure-gradient control valve of a retarder for vehicles air system, control unit (1) connects electromagnetic switch valve (5) from the inlet side of pressure-gradient control valve (2), the end that goes out of electromagnetic switch valve (5) is communicated with oil groove (4), it is characterized in that: pressure-gradient control valve (2) is made up of electromagnetic switch valve (5), proportion magnetic valve (6) and leather cup (7), control unit (1) is connected with proportion magnetic valve (6) with electromagnetic switch valve (5) respectively from the inlet side, the output of proportion magnetic valve (6) is communicated with the input of leather cup (7), and leather cup (7) connects breather pipe (8) back output gas flow.
2. the pressure-gradient control valve of retarder for vehicles air system according to claim 1, it is characterized in that: the valve body of described proportion magnetic valve (6) is the spool slide-valve structure, in fixed valve plug (10), be with movable valve plug (9), preloading spring (13) and pull back spring (11) are arranged on the outer ring, two ends of movable valve plug (9) and are positioned at the two ends, the left and right sides of fixed valve plug (10), and link stopper (12) is fixed on movable valve plug (9) low order end.
3. the pressure-gradient control valve of retarder for vehicles air system according to claim 2 is characterized in that: the adjustable maximum spool stroke of proportion magnetic valve (6) is 3mm.
4. the pressure-gradient control valve of retarder for vehicles air system according to claim 1 is characterized in that: described leather cup (7) is a kind of two-bit triplet valve arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200328336U CN201201584Y (en) | 2008-03-10 | 2008-03-10 | Pressure control valve of buffer air inlet system for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200328336U CN201201584Y (en) | 2008-03-10 | 2008-03-10 | Pressure control valve of buffer air inlet system for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201201584Y true CN201201584Y (en) | 2009-03-04 |
Family
ID=40423896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200328336U Expired - Fee Related CN201201584Y (en) | 2008-03-10 | 2008-03-10 | Pressure control valve of buffer air inlet system for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201201584Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782289A (en) * | 2014-12-22 | 2016-07-20 | 林会明 | Integrated control valve for hydrodynamic retarder and control method |
| CN108757248A (en) * | 2018-07-09 | 2018-11-06 | 郑州航空工业管理学院 | Variable position adaptively switches the energy saving reciprocal fueller of two-way |
-
2008
- 2008-03-10 CN CNU2008200328336U patent/CN201201584Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782289A (en) * | 2014-12-22 | 2016-07-20 | 林会明 | Integrated control valve for hydrodynamic retarder and control method |
| CN105782289B (en) * | 2014-12-22 | 2018-09-14 | 林会明 | Integrated control valve and control method for Retarder |
| CN108757248A (en) * | 2018-07-09 | 2018-11-06 | 郑州航空工业管理学院 | Variable position adaptively switches the energy saving reciprocal fueller of two-way |
| CN108757248B (en) * | 2018-07-09 | 2023-09-05 | 郑州航空工业管理学院 | Variable position self-adaptive switching double-path energy-saving reciprocating oil supply device |
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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: 20090304 Termination date: 20130310 |