CN203766872U - Automotive electronic hydraulic power steering system - Google Patents
Automotive electronic hydraulic power steering system Download PDFInfo
- Publication number
- CN203766872U CN203766872U CN201420186401.6U CN201420186401U CN203766872U CN 203766872 U CN203766872 U CN 203766872U CN 201420186401 U CN201420186401 U CN 201420186401U CN 203766872 U CN203766872 U CN 203766872U
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- Prior art keywords
- oil
- storage tank
- push rod
- type pump
- electromagnetic valve
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- 230000006641 stabilisation Effects 0.000 claims description 9
- 238000011105 stabilization Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 239000012530 fluid Substances 0.000 description 19
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model relates to an automotive electronic hydraulic power steering system which comprises a motor, a vane pump connected with the motor, a steering gear assembly and an oil storage tank. The vane pump is connected with the steering gear assembly through an oil outlet pipe and connected with the oil storage tank through an oil inlet pipe, the steering gear assembly conveys oil to the oil storage tank through an oil return pipe, the vane pump is provided with a flow stabilizing overflow valve, and the flow stabilizing overflow valve is connected with the oil storage tank through an overflow pipe. According to the automotive electronic hydraulic power steering system, a circulation loop is arranged between the vane pump and the oil storage tank, the problem that the oil temperature rises rapidly during steering under the working stations that a steering wheel is turned to the limit or the road conditions are poor is solved, and through control over a proportional solenoid valve, output oil amount is reduced with increasing of automobile speed, the steering system formed by the vane pump with the proportional solenoid valve can still maintain assistant power due to mechanical structure even after electronic control loses efficacy, and the safety of the system is improved greatly.
Description
Technical field
The utility model relates to a kind of automobile steering system, is specifically related to a kind of vehicle electronics hydraulic power-assist steering system.
Background technology
When the operating mode that bearing circle fights to the finish or condition of road surface is poor turns to, rotary valve is in closed condition, make by the fluid of deflector almost nil, oil pump does not now quit work, blade-type pump pressure moment increases, in the time reaching the force value of blade-type pump safety valve setting, blade-type pump safety valve is opened, and fluid is realized inner loop in blade-type pump.In this case, hydraulic energy is all converted into heat energy, now blade-type pump pressure is high, and power is large, along with the temperature rise of fluid, it is large that viscosity becomes, fluid cannot pass through external cooling, and the oil liquid temperature that can only circulate in blade-type pump exceeds the use value limit soon, and loses the lubricity of fluid itself, make blade and stator negative camber in blade-type pump become dry friction, accelerated the wearing and tearing to stator negative camber.Under high temperature action, the solids such as the easy carbide precipitate of fluid, can further accelerate the wearing and tearing of stator, like this because the gap of rotor and oil distribution casing is very little, after fluid loses lubricity, be also easy to cause oil distribution casing and rotor end-face to burn and blade-type pump was lost efficacy.In addition, high temperature has also been accelerated the aging of packing element, causes the inefficacy of sealing member and leakage of oil.In a word, existing two oil port structures, service life is short, poor reliability.In addition, present EHPS is electronically controlled steering swivel system, once electronics is out of control, no longer power-assisted, affects traffic safety.
Utility model content
Technical problem to be solved in the utility model is, overcome the shortcoming of prior art, a kind of vehicle electronics hydraulic power-assist steering system is provided, by be provided with circulation loop between blade-type pump and petrol storage tank, can solve the fast problem of fluid temperature rise by actv., and along with the increase of the speed of a motor vehicle, output fluid amount reduces.
In order to solve above technical matters, the utility model provides a kind of vehicle electronics hydraulic power-assist steering system, the blade-type pump, steering assembly and the petrol storage tank that comprise motor, be connected with motor, blade-type pump is provided with oil inlet and oil outlet, blade-type pump oil inlet is connected with petrol storage tank by oil inlet, described blade-type pump oil outlet is connected with steering assembly by oil outlet pipe, steering assembly is transported to oil in petrol storage tank by oil return pipe, described blade-type pump is provided with current stabilization by pass valve, and current stabilization by pass valve is connected with petrol storage tank by overflow pipe.
The technical scheme that the utility model further limits is: described blade-type pump is provided with boss, boss is provided with overflow weir, overflow weir is connected with overflow pipe, overflow weir is connected with petrol storage tank by the overflow pipe that is threaded hole connector, its center tap connects employing insulating material and is furnished with seal ring, between described blade-type pump and oil outlet pipe, be provided with proportion magnetic valve, blade-type pump is connected with proportion magnetic valve by oil outlet, proportion magnetic valve oil outlet is connected with petrol storage tank, proportion magnetic valve is connected with controller, controller is connected with car speed sensor, described proportion magnetic valve comprises electromagnet, valve body, electromagnetic valve push rod and coil, described electromagnetic valve push rod is positioned at valve cavity, coil is on electromagnetic valve push rod head, electromagnet is positioned at the middle part of electromagnetic valve push rod, electromagnetic valve push rod afterbody and restriction are suitable, change the variation of restriction oil mass with respect to the position of restriction by changing electromagnetic valve push rod.
Further, electromagnetic valve push rod afterbody is ring-type taper or ball valve shape, one end that restriction coordinates with electromagnetic valve push rod is ring-type taper, by changing the variation of electromagnetic valve push rod with respect to the space change restriction oil mass between restriction, the movement of electromagnetic valve push rod in the speed of a motor vehicle control ratio electromagnetic valve that controller detects by car speed sensor, reach the increase along with the speed of a motor vehicle, the object that output fluid amount reduces.
The beneficial effects of the utility model are: by be provided with circulation loop between blade-type pump and petrol storage tank, can actv. solution turn to the fast problem of lower fluid temperature rise in the operating mode that bearing circle fights to the finish or condition of road surface is poor, and by control ratio electromagnetic valve, along with the increase of the speed of a motor vehicle, output fluid amount reduces, the steering swivel system forming with the blade-type pump of proportion magnetic valve, even after electron steering lost efficacy, due to physical construction reason, still can keep power-assisted, the safety that has greatly improved native system.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of proportion magnetic valve.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of vehicle electronics hydraulic power-assist steering system that the utility model provides, the blade-type pump 13, steering assembly 15 and the petrol storage tank 20 that comprise motor, be connected with motor, blade-type pump 13 is connected with steering assembly 15 by oil outlet pipe 16, blade-type pump 13 is provided with oil distribution casing and oil inlet 14, oil inlet 18 connects oil inlet 14 and petrol storage tank 20, steering assembly 15 is transported to oil in petrol storage tank 20 by oil return pipe 17, blade-type pump 13 is provided with current stabilization by pass valve 24, and current stabilization by pass valve 24 is connected with petrol storage tank 20 by overflow pipe 19.
In the present embodiment, blade-type pump 13 is provided with boss 23, current stabilization by pass valve 24 is positioned at boss 23, boss 23 is provided with overflow weir 21, overflow weir 21 is connected with overflow pipe 19, left side opening one hole slot of petrol storage tank 20, hole slot is the tapped bore of 10mm, and overflow weir 21 is connected with petrol storage tank 20 with the overflow pipe 19 that is threaded hole, between blade-type pump 13 and oil outlet pipe 16, be provided with proportion magnetic valve, proportion magnetic valve comprises electromagnet 5, valve body 1, electromagnetic valve push rod 3 and coil 2, electromagnetic valve push rod 3 is positioned at valve body 1 cavity, coil 2 is on electromagnetic valve push rod 3 heads, electromagnet 5 is positioned at the middle part of electromagnetic valve push rod 3, electromagnetic valve push rod 3 afterbodys and restriction 12 are suitable, electromagnetic valve push rod 3 is coaxial with restriction 12, electromagnetic valve push rod afterbody 7 is ring-type taper or ball valve shape, the suitable one end of restriction 12 and electromagnetic valve push rod 3 is ring-type taper, thereby change the gap between electromagnetic valve push rod 3 and restriction 12 by changing electromagnetic valve push rod 3 with respect to the position of restriction 12, thereby change the variation of restriction 12 oil masses.
In use, driven by motor blade-type pump 13 rotates the utility model, and blade is under the effect of centnifugal force, by the process that has rotated and reverse oil suction and force feed of motor.In native system, in the oil return pipe 17 of petrol storage tank 20 and steering assembly 15, be provided with safety valve, can ensure under the magnetic clutch of automobile and the out of control state of electric hydraulic pump, fluid to be got back in petrol storage tank 20, increased greatly the reliability of native system.
Driven by motor blade-type pump 13 rotates, blade-type pump 13 is drawn the oil in petrol storage tank 20 by oil inlet 18, the oil of blade-type pump 13 enters oil distribution casing outlet 11 by oil distribution casing, oil enters into proportion magnetic valve, thereby controller moves axially by adjusting electromagnetic valve push rod 3 gap changing between electromagnetic valve push rod 3 and restriction 12 in valve body 1 cavity, reach the variation that changes restriction 12 oil masses, oil mass enters into oil outlet pipe 16 from the oil outlet 4 of proportion magnetic valve, thereby enter into steering assembly 15, complete and turn to, turn to after end by being back in petrol storage tank 20 by oil return pipe 17, realize once circulation.
In the time that the convertible valve in steering assembly 15 is closed, oil in blade-type pump 13 can not enter into steering assembly 15, but blade-type pump 13 is still in running order, oil suction from petrol storage tank 20, cause the oil pressure in blade-type pump 13 pumps to raise, oil temperature also raises, after the oil pressure in pump is elevated to the pressure of setting of current stabilization by pass valve 24, current stabilization by pass valve 24 is opened, thereby enter into petrol storage tank 20 by boss 23 and overflow pipe 19, fluid is through boss 23 and overflow pipe 19, realize inner-outer circulation, take away heat, reduce the load of motor, also blade-type pump 13 is played a protective role, then fluid enters in blade-type pump 13 by oil inlet 18, realize oil circulation, avoid the too fast situation of fluid temperature rise, due to by pass valve, the structures such as overflow pipe are mechanical component, after electronic control device lost efficacy, blade-type pump 13, steering assembly 15 can normally be worked, still can keep power-assisted, greatly improve the safety of system.
Controller is also connected with car speed sensor, by the road speed of car speed sensor inspection vehicle, in the time that the speed of a motor vehicle increases, controller control ratio electromagnetic valve makes the gap smaller between electromagnetic valve push rod 3 and restriction 12, thereby oil mass reduces, in the time that the speed of a motor vehicle reduces, controller control ratio electromagnetic valve makes the gap between electromagnetic valve push rod 3 and restriction 12 become large, thereby oil mass increases, and reaches the increase along with the speed of a motor vehicle, the object that output fluid amount reduces.
Experimental results show that, be that 10ml/r, pressure are that 10MPa, rotating speed are that 3000r/min, oil outlet are stop continuously 30s in the situation that in discharge capacity, if adopt the utility model scheme, blade-type pump 13 fluid temperature rises are 20-25 DEG C, and under equal conditions, the temperature rise of former scheme blade-type pump 13 fluid is 60-65 DEG C, so the utility model energy actv. avoids oil temperature too high.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1. a vehicle electronics hydraulic power-assist steering system, comprise motor, the blade-type pump (13) being connected with motor, steering assembly (15) and petrol storage tank (20), described blade-type pump (13) is communicated with petrol storage tank (20) by oil inlet (18), blade-type pump (13) is communicated with steering assembly (15) by oil outlet pipe (16), steering assembly (15) is communicated with petrol storage tank (20) by oil return pipe (17), it is characterized in that: described blade-type pump (13) is provided with current stabilization by pass valve (24), current stabilization by pass valve (24) is communicated with petrol storage tank (20) by overflow pipe (19).
2. vehicle electronics hydraulic power-assist steering system according to claim 1, is characterized in that: described blade-type pump (13) is provided with boss (23), and boss (23) is provided with overflow weir (21), and overflow weir (21) is connected with overflow pipe (19).
3. vehicle electronics hydraulic power-assist steering system according to claim 2, is characterized in that: between described blade-type pump (13) and oil outlet pipe (16), be provided with proportion magnetic valve, proportion magnetic valve is connected with controller, and controller is connected with car speed sensor.
4. vehicle electronics hydraulic power-assist steering system according to claim 3, it is characterized in that: described proportion magnetic valve comprises electromagnet (5), valve body (1), electromagnetic valve push rod (3) and coil (2), described electromagnetic valve push rod (3) is positioned at valve body (1) cavity, coil (2) is around electromagnetic valve push rod (3) head, electromagnet (5) is positioned at the middle part of electromagnetic valve push rod (3), electromagnetic valve push rod afterbody (7) is suitable with restriction (12), electromagnetic valve push rod afterbody (7) is ring-type taper or ball valve shape, one end that restriction (12) coordinates with electromagnetic valve push rod (3) is ring-type taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186401.6U CN203766872U (en) | 2014-04-16 | 2014-04-16 | Automotive electronic hydraulic power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186401.6U CN203766872U (en) | 2014-04-16 | 2014-04-16 | Automotive electronic hydraulic power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203766872U true CN203766872U (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420186401.6U Expired - Lifetime CN203766872U (en) | 2014-04-16 | 2014-04-16 | Automotive electronic hydraulic power steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203766872U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890722A (en) * | 2015-05-15 | 2015-09-09 | 郑州宇通客车股份有限公司 | Control method of electro-hydraulic power-assisted steering and system for implementing method |
| CN105539578A (en) * | 2015-12-28 | 2016-05-04 | 全兴精工集团有限公司 | Direct-current brushless electro-hydraulic power steering pump and control method thereof of new energy passenger car |
| CN105644619A (en) * | 2015-12-28 | 2016-06-08 | 全兴精工集团有限公司 | Intelligent hydraulic power steering system and control method thereof |
| CN105667582A (en) * | 2015-12-28 | 2016-06-15 | 全兴精工集团有限公司 | Electric hydraulic power steering pump for new-energy pure electric bus and control method for electric hydraulic power steering pump |
-
2014
- 2014-04-16 CN CN201420186401.6U patent/CN203766872U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890722A (en) * | 2015-05-15 | 2015-09-09 | 郑州宇通客车股份有限公司 | Control method of electro-hydraulic power-assisted steering and system for implementing method |
| CN105539578A (en) * | 2015-12-28 | 2016-05-04 | 全兴精工集团有限公司 | Direct-current brushless electro-hydraulic power steering pump and control method thereof of new energy passenger car |
| CN105644619A (en) * | 2015-12-28 | 2016-06-08 | 全兴精工集团有限公司 | Intelligent hydraulic power steering system and control method thereof |
| CN105667582A (en) * | 2015-12-28 | 2016-06-15 | 全兴精工集团有限公司 | Electric hydraulic power steering pump for new-energy pure electric bus and control method for electric hydraulic power steering pump |
| CN105539578B (en) * | 2015-12-28 | 2017-09-29 | 全兴精工集团有限公司 | A kind of integral new-energy passenger brush DC type electric hydraulic power-assisted steering pump and its control method |
| CN105644619B (en) * | 2015-12-28 | 2017-11-24 | 全兴精工集团有限公司 | Intelligent hydraulic servo steering system and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |