CN107091227A - A kind of steering pump, hydraulic power-assist steering system and automobile - Google Patents
A kind of steering pump, hydraulic power-assist steering system and automobile Download PDFInfo
- Publication number
- CN107091227A CN107091227A CN201710350946.4A CN201710350946A CN107091227A CN 107091227 A CN107091227 A CN 107091227A CN 201710350946 A CN201710350946 A CN 201710350946A CN 107091227 A CN107091227 A CN 107091227A
- Authority
- CN
- China
- Prior art keywords
- oil
- pump shaft
- housing
- distribution casing
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
Abstract
The disclosure is directed to a kind of steering pump, hydraulic power-assist steering system and automobile, belong to automobile technical field.The steering pump includes bonnet, housing, pump shaft, oil sealing, oil distribution casing and rotor, wherein：Bonnet is fixedly connected with the casing, and is internally formed cavity；The two ends of pump shaft are arranged on bonnet and housing by bearing respectively；Oil distribution casing and rotor are respectively positioned in the inside of cavity, on pump shaft；On pump shaft, at the bearing between pump shaft and housing, oil sealing is installed；Oil suction chamber is provided with housing；Spill port is provided with housing between oil suction chamber and oil sealing；Pod apertures are provided with oil distribution casing, the first end of pod apertures is located at end face of the oil distribution casing close to rotor, and the second end of pod apertures is located at the inwall that oil distribution casing is contacted with pump shaft.Using the disclosure, the contact position between oil sealing and pump shaft can be solved and occurred as caused by hard impurity the problem of oil leakage phenomenon.
Description
Technical field
The disclosure is directed to automobile technical field, especially with respect to a kind of steering pump, hydraulic power-assist steering system and automobile.
Background technology
The hydraulic power-assist steering system of automobile be automobile frequently with steering boost system, mainly including steering pump, turn to
Machine and oil tank etc..Steering pump includes bonnet, housing, pump shaft, oil distribution casing, rotor and stator again, wherein, bonnet is fixed with housing to be connected
The shell of composition steering pump is connect, pump shaft, oil distribution casing, rotor and stator are arranged on the inside of shell.Specifically, as shown in figure 1, turning
Son is located in stator, and rotor can be rotated in the stator；Stator is located at housing close to the end of bonnet；Oil distribution casing position
In end face of the stator away from bonnet；The shape of oil distribution casing, rotor and stator is annular, and pump shaft passes through oil distribution casing and stator, makees
The inside of steering pump case is arranged on for the drive shaft of steering pump.
In force, when rotor is rotated in the stator, the fluid in oil tank is sucked into steering pump, and fluid is in steering pump
It is changed into high-voltage oil liquid, is then pressed into steering machine, provides rotation power-assisted.Need to keep vacuum to produce in steering pump
High-voltage oil liquid, so the inside of steering pump must keep sealing state.Carried out between the bonnet and housing of steering pump by sealing ring
Sealing, and have relative rotation between pump shaft and housing, therefore sealed between pump shaft and housing by the oil sealing of annular.Wherein,
Fluid in oil sealing is the low pressure fluid in steering pump, gap, oil distribution casing and pump shaft of the low pressure fluid between rotor and pump shaft
Between gap and housing and pump shaft between gap in flow, subsequently into the oil-feed in oil sealing, eventually flowed into housing
In chamber.
During the disclosure is realized, inventor has found at least there is problems with：
The contact position of oil sealing and pump shaft easily accumulates hard impurity (such as metal dust), and in pump shaft rotation, hard is miscellaneous
Matter can wear and tear oil sealing and pump shaft, oil sealing or pump shaft is produced cut or pitting in contact position, cause contact position oil leak occur.
The content of the invention
In order to overcome the contact position of oil sealing present in correlation technique and pump shaft Leakage occur, present disclose provides one
Plant steering pump, hydraulic power-assist steering system and automobile.The technical scheme is as follows：
According to the first aspect of the embodiment of the present disclosure there is provided a kind of steering pump, the steering pump includes bonnet, housing, pump
Axle, oil sealing, oil distribution casing and rotor, wherein：
The bonnet is fixedly connected with the housing, is internally formed cavity；
The two ends of the pump shaft are arranged on the bonnet and the housing by bearing respectively；
The oil distribution casing and the rotor are respectively positioned in the inside of the cavity, on the pump shaft；
On the pump shaft, at the bearing between the pump shaft and the housing, the oil sealing is installed；
Oil suction chamber is provided with the housing；
Spill port is provided with the housing between the oil suction chamber and the oil sealing；
Pod apertures are provided with the oil distribution casing, the first end of the pod apertures is located at the oil distribution casing close to the rotor
End face, the second end of the pod apertures is located at the inwall that the oil distribution casing is contacted with the pump shaft.
Optionally, the pod apertures are made up of transverse holes and longitudinal hole；
The end of the transverse holes is located at end face of the oil distribution casing close to the rotor；
The longitudinal hole is located at the inwall that the oil distribution casing is contacted with the pump shaft.
Optionally, the first end of the pod apertures is located at the low pressure oil area of the oil distribution casing.
Optionally, a diameter of default value of the pod apertures.
Optionally, the default value is 2 millimeters.
Optionally, it is provided with sealing ring between the bonnet and the housing.
According to the second aspect of the embodiment of the present disclosure, there is provided a kind of hydraulic power-assist steering system, the hydraulic power-assisted steering
System includes the steering pump described in first aspect
According to the third aspect of the embodiment of the present disclosure there is provided a kind of automobile, the automobile includes the liquid described in second aspect
Press servo steering system.
The technical scheme provided by this disclosed embodiment can include the following benefits：
In the embodiment of the present disclosure, the low pressure oil area of oil distribution casing is provided with pod apertures, can increase low pressure fluid in oil sealing
Mobility, it is thus possible to avoid hard impurity from being deposited in oil sealing, make to wear and tear between oil sealing and pump shaft.It is this with
Pod apertures are set up on food tray, the oil leakage phenomenon as caused by hard impurity occurs in the contact position that can be solved between oil sealing and pump shaft
Problem.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.In the accompanying drawings：
Fig. 1 is the structural representation according to a kind of steering pump for implementing to exemplify；
Fig. 2 is the structural representation according to a kind of steering pump for implementing to exemplify；
Fig. 3 is the structural representation of part A in Fig. 1；
Fig. 4 is the structural representation according to a kind of oil distribution casing for implementing to exemplify；
Fig. 5 is the profile shown in Fig. 4；
Fig. 6 is the structural representation according to a kind of steering pump for implementing to exemplify；
Fig. 7 is the structural representation of part B in Fig. 6.
Marginal data
1st, bonnet 2, housing
3rd, pump shaft 4, oil sealing
5th, oil distribution casing 6, rotor
7th, stator 8, sealing ring
21st, oil suction chamber 22, spill port
23rd, oil duct 51, pod apertures
61st, blade 62, blade groove
511st, transverse holes 512, longitudinal hole
Pass through above-mentioned accompanying drawing, it has been shown that the clear and definite embodiment of the disclosure, will hereinafter be described in more detail.These accompanying drawings
It is not intended to limit the scope that the disclosure is conceived by any mode with word description, but is by reference to specific embodiment
Those skilled in the art illustrate the concept of the disclosure.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the disclosure.
Embodiment one
Present embodiment discloses a kind of steering pump, as shown in figure 1, the steering pump includes bonnet 1, housing 2, pump shaft 3, oil sealing
4th, oil distribution casing 5 and rotor 6, wherein：Bonnet 1 is fixedly connected with housing 2, is internally formed cavity；The two ends of pump shaft 3 pass through axle respectively
Hold on bonnet 1 and housing 2；Oil distribution casing 5 and rotor 6 are respectively positioned in the inside of cavity, on pump shaft 3；In pump shaft 3
On, at the bearing between pump shaft 3 and housing 2, oil sealing 4 is installed；Oil suction chamber 21 is provided with housing 2；Oil suction chamber 21 with
Spill port 22 is provided with housing 2 between oil sealing 4；Pod apertures 51 are provided with oil distribution casing 5, the first end of pod apertures 51 is located at
Oil distribution casing 5 is close to the end face of rotor 6, and the second end of pod apertures 51 is located at the inwall that oil distribution casing 5 is contacted with pump shaft 3.
Wherein, steering pump is the power source of the hydraulic power-assist steering system of automobile.As shown in Fig. 2 arrow represents to turn in figure
Oil suction and oil extraction process to pump, in hydraulic power-assist steering system, one end of steering pump is connected by oil pipe with oil tank, another
End is connected by oil pipe with turning to machine.Steering pump oil suction from oil tank, fluid is changed into after high-voltage oil liquid, by high-voltage oil liquid
It is discharged in steering machine, for turning to.
The first end of pod apertures 51 refers to one end close to the low pressure oil area of oil distribution casing 5, that is to say, low pressure fluid is being led
The upstream end of discharge orifice 51.
In force, as shown in figure 1, bonnet 1 is bolted to connection with housing 2, the shell of the steering pump is formed.Turn
Son 6 is shaped as annular, on pump shaft 3, positioned at housing 2 close to the end of bonnet 1.Steering pump also includes stator 7, such as schemes
Shown in 2, the cross sectional shape of stator 7 is ellipse, wherein, the internal diameter of short axle is equal to the external diameter of rotor 6, and the internal diameter of major axis is more than rotor
6 external diameter.Stator 7 is enclosed on the outside of rotor 6, in housing 2, and rotor 6 can be rotated in stator 7.
Usual steering pump has vane type steering pump, gear type steering pump etc., and their course of work is all similar, is first to inhale
Fluid in oil tank, is then compressed into high-voltage oil liquid by fluid, and high-voltage oil liquid finally is discharged into steering machine.Turned to for gear type
Pump, the rotor 6 is a pair of pitch wheels, for vane type pump shaft, and the rotor 6 also includes multiple blades.The present embodiment
In be described in detail with vane type steering pump, as shown in Fig. 2 multiple blades 61 of rotor 6 are placed on the blade groove 62 of rotor 6
In, when 6 high-speed rotation of rotor, under the influence of centrifugal force, its end is close on the inner surface of stator 7 blade 61.
As shown in figure 1, the oil distribution casing 5 of steering pump is located at end of the stator 6 away from bonnet 1, it is close to rotor 6 and stator
7 end face.So, rotor 6 is when telling rotation, rotor 6, two blades 61, stator 7 and the formation cavity of oil distribution casing 5, due to fixed
The cross sectional shape of son 7 is ellipse, and during rotor 6 is rotated, the volume of the cavity can change.When the volume of cavity changes from small to big
During, steering pump oil suction liquid from oil tank, when cavity volume from large to small when, fluid is compressed into high-voltage oil liquid, turn
High-voltage oil liquid will be pressed into steering machine to pump, to provide rotation power-assisted.
Above-mentioned oil suction and oil extraction process is required to steering pump and is in vacuum state, so needing to seal steering pump.
As shown in figure 1, being sealed between bonnet 1 and housing 2 by the sealing ring 8 (also referred to as O-ring) of annular.Because pump shaft 3 exists
Rotated in housing 2, so being sealed between pump shaft 3 and housing 2 with oil sealing 4.As shown in figure 1, the shape of oil sealing 4 is also
Annular, is linear contact lay in housing 2, between oil sealing 4 and pump shaft 3.Oil in oil sealing 4 is yesterday from the low pressure in above-mentioned cavity
Fluid, the low pressure fluid is flowed into the gap between rotor 6 and pump shaft 3, again passes through the gap between oil distribution casing 5 and pump shaft 3,
Enter in oil sealing 4.
Fluid is circulated between oil tank, steering pump and steering machine.Specifically, as shown in figure 1, the housing 2 of steering pump
On be provided with oil suction chamber 21, oil suction chamber 21 is connected by oil pipe with oil tank.Set on housing 2 between oil suction chamber 21 and oil sealing 4
There is spill port 22, oil duct 23 is provided with the housing 2 between oil suction chamber 21 and stator 7.So, the fluid in oil tank enter into
In oil pocket 21, then the inside (cavity described above) of stator 7 is entered through oil channel, compress fluid in the rotation of rotor 6
Into high-voltage oil liquid, it is discharged in steering machine, oil pipe is also equipped between steering machine and oil tank, so that high-voltage oil liquid is back to oil tank
In.Also un-compressed low pressure fluid is had in above-mentioned cavity, the low pressure fluid passes through the gap between rotor 6 and pump shaft 3, matched somebody with somebody
Gap between food tray 5 and pump shaft 3 is flowed in oil sealing 4, as shown in figure 3, flowing to oil suction chamber 21 by spill port 22 by oil sealing 4 again
In, eventually flow in oil tank, so that, fluid is circulated between oil tank, steering pump and steering machine.
In order to accelerate mobility of the low pressure fluid in oil sealing 4, as shown in figure 4, pod apertures can be set on oil distribution casing 5
51, as shown in figure 5, pod apertures 51 include transverse holes 511 and longitudinal hole 512.Match somebody with somebody as shown in fig. 6, the end of transverse holes 511 is located at
Food tray 5 is on the end face of rotor 6, and longitudinal hole 512 is located on the inwall of oil distribution casing 5.So, as shown in fig. 7, rotor 6 is with determining
Fluid between son 7 can be entered in the gap between oil distribution casing 5 and pump shaft 3 by pod apertures 51, it is thus possible to accelerate oil
Mobility of the liquid in oil sealing 4.
So, rotate in pump work, the low pressure fluid part in the cavity that rotor 6, stator 7 are formed with oil distribution casing 5 is straight
Connect in the gap being flowed between rotor 6 and pump shaft 3, another part low pressure fluid enters oil distribution casing 5 and pump by pod apertures 51
In gap between axle 3, this two parts low pressure fluid is flowed in oil sealing 4, increases the low pressure oil liquid measure in oil sealing 4, can be with
Accelerate mobility of the low pressure fluid in oil sealing 4, as shown in figure 3, the low pressure fluid in oil sealing 4 is entered by return port 22 again
In oil suction chamber 21.When there is hard impurity (such as metal dust) in oil sealing 4, low pressure fluid can be quickly by hard impurity
It is discharged in oil suction chamber 21 (screen pack in oil suction chamber 21 with impurity screening), it is thus possible to avoid hard impurity from being deposited in oil
Feng Zhong, makes to wear and tear between oil sealing 4 and pump shaft 3.It is this that pod apertures 51 are set up on oil distribution casing 5, oil sealing 4 and pump can be solved
Contact position between axle 3 occurs as caused by hard impurity the problem of oil leakage phenomenon.
Optionally, the fluid in oil sealing 4 is applied in oil sealing 4, makes to rotate between oil sealing 4 and pump shaft 3, so
Fluid is that low pressure fluid can be met, accordingly, as shown in Figures 4 and 5, and the first end of pod apertures 51 is located at the low pressure of oil distribution casing 5
Oily area.Above-mentioned first end that is to say the end of transverse holes 511.
Optionally, a diameter of default value of pod apertures 51.
In force, if the diameter of pod apertures 51 is too big, the oil that steering pump can be made to be inhaled from oil tank is most of from water conservancy diversion
Flowed out in hole 51, cause hydraulic oil liquid measure less, cause hydraulic power-assist steering system to provide preferable power-assisted effect.If
The diameter of pod apertures 51 is too small, then can not effectively increase the low pressure oil liquid measure in oil sealing 4, can make the mesolow fluid of oil sealing 4
Mobility is poor, and the time for making hard impurity be retained in oil sealing 4 is longer, and abrasion is produced to the contact position of oil sealing 4 and pump shaft 3,
The phenomenon of oil leak occurs for the contact position that can equally produce oil sealing 4 and pump shaft 3.In summary, the diameter of pod apertures 51 can be set
Default value is set to, but according to repetition test and practical experience, above-mentioned default value can be 2 millimeters.
In the embodiment of the present disclosure, the low pressure oil area of oil distribution casing is provided with pod apertures, can increase low pressure fluid in oil sealing
Mobility, it is thus possible to avoid hard impurity from being deposited in oil sealing, make to wear and tear between oil sealing and pump shaft.It is this with
Pod apertures are set up on food tray, the oil leakage phenomenon as caused by hard impurity occurs in the contact position that can be solved between oil sealing and pump shaft
Problem.
Embodiment two
The disclosure additionally provides a kind of hydraulic power-assist steering system, and the hydraulic power-assist steering system is included described in embodiment one
Steering pump, as described in embodiment one, the low pressure oil area of the oil distribution casing of the steering pump is provided with pod apertures, can increase low pressure oil
Mobility of the liquid in oil sealing, it is thus possible to avoid hard impurity from being deposited in oil sealing, makes to grind between oil sealing and pump shaft
Damage.It is this that pod apertures are set up on oil distribution casing, the contact position between oil sealing and pump shaft can be solved and occur being caused by hard impurity
Oil leakage phenomenon the problem of.
Embodiment three
The disclosure additionally provides a kind of automobile, and the automobile includes the hydraulic power-assist steering system described in embodiment two, strictly according to the facts
Apply described in example two, the hydraulic power-assist steering system includes the steering pump described in embodiment one, as described in embodiment one, the steering
The low pressure oil area of the oil distribution casing of pump is provided with pod apertures, can increase mobility of the low pressure fluid in oil sealing, it is thus possible to keep away
Exempt from hard impurity to be deposited in oil sealing, make to wear and tear between oil sealing and pump shaft.It is this that pod apertures are set up on oil distribution casing, can be with
The contact position between oil sealing and pump shaft is solved to occur as caused by hard impurity the problem of oil leakage phenomenon.
Those skilled in the art will readily occur to its of the disclosure after considering specification and putting into practice disclosure disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by following
Claim is pointed out.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.
Claims (8)
1. a kind of steering pump, it is characterised in that the steering pump includes bonnet, housing, pump shaft, oil sealing, oil distribution casing and rotor, its
In：
The bonnet is fixedly connected with the housing, is internally formed cavity；
The two ends of the pump shaft are arranged on the bonnet and the housing by bearing respectively；
The oil distribution casing and the rotor are respectively positioned in the inside of the cavity, on the pump shaft；
On the pump shaft, at the bearing between the pump shaft and the housing, the oil sealing is installed；
Oil suction chamber is provided with the housing；
Spill port is provided with the housing between the oil suction chamber and the oil sealing；
Pod apertures are provided with the oil distribution casing, the first end of the pod apertures is located at the oil distribution casing close to the end of the rotor
Face, the second end of the pod apertures is located at the inwall that the oil distribution casing is contacted with the pump shaft.
2. steering pump according to claim 1, it is characterised in that the pod apertures are made up of transverse holes and longitudinal hole；
The end of the transverse holes is located at end face of the oil distribution casing close to the rotor；
The longitudinal hole is located at the inwall that the oil distribution casing is contacted with the pump shaft.
3. steering pump according to claim 1, it is characterised in that the first end of the pod apertures is located at the oil distribution casing
Low pressure oil area.
4. steering pump according to claim 1, it is characterised in that a diameter of default value of the pod apertures.
5. steering pump according to claim 4, it is characterised in that the default value is 2 millimeters.
6. steering pump according to claim 1, it is characterised in that sealing is provided between the bonnet and the housing
Circle.
7. a kind of hydraulic power-assist steering system, it is characterised in that it is any that the hydraulic power-assist steering system includes claim 1-6
Steering pump described in.
8. a kind of automobile, it is characterised in that the automobile includes the hydraulic power-assist steering system described in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350946.4A CN107091227A (en) | 2017-05-17 | 2017-05-17 | A kind of steering pump, hydraulic power-assist steering system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350946.4A CN107091227A (en) | 2017-05-17 | 2017-05-17 | A kind of steering pump, hydraulic power-assist steering system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091227A true CN107091227A (en) | 2017-08-25 |
Family
ID=59637661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710350946.4A Pending CN107091227A (en) | 2017-05-17 | 2017-05-17 | A kind of steering pump, hydraulic power-assist steering system and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649485A (en) * | 2019-01-15 | 2019-04-19 | 烟台利通液压技术有限公司 | A kind of Vehicular electric hydraulic power-assisted steering pump assembly |
| CN110056505A (en) * | 2018-01-18 | 2019-07-26 | 江苏德尔森汽车有限公司 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971525A (en) * | 1988-08-30 | 1990-11-20 | Aisin Seiki Kabushiki Kaisha | Hydraulic pump for hydraulically driven fan system |
| US6048185A (en) * | 1997-06-24 | 2000-04-11 | Unisia Jecs Corporation | Hydraulic pumps |
| JP2003097455A (en) * | 2001-09-25 | 2003-04-03 | Kayaba Ind Co Ltd | Vane pump |
| JP2008274778A (en) * | 2007-04-25 | 2008-11-13 | Showa Corp | Variable displacement pump |
| CN103147979A (en) * | 2013-02-28 | 2013-06-12 | 奇瑞汽车股份有限公司 | Power steering pump |
-
2017
- 2017-05-17 CN CN201710350946.4A patent/CN107091227A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971525A (en) * | 1988-08-30 | 1990-11-20 | Aisin Seiki Kabushiki Kaisha | Hydraulic pump for hydraulically driven fan system |
| US6048185A (en) * | 1997-06-24 | 2000-04-11 | Unisia Jecs Corporation | Hydraulic pumps |
| JP2003097455A (en) * | 2001-09-25 | 2003-04-03 | Kayaba Ind Co Ltd | Vane pump |
| JP2008274778A (en) * | 2007-04-25 | 2008-11-13 | Showa Corp | Variable displacement pump |
| CN103147979A (en) * | 2013-02-28 | 2013-06-12 | 奇瑞汽车股份有限公司 | Power steering pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056505A (en) * | 2018-01-18 | 2019-07-26 | 江苏德尔森汽车有限公司 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
| CN109649485A (en) * | 2019-01-15 | 2019-04-19 | 烟台利通液压技术有限公司 | A kind of Vehicular electric hydraulic power-assisted steering pump assembly |
| CN109649485B (en) * | 2019-01-15 | 2024-04-09 | 烟台利通液压技术有限公司 | Electric hydraulic power-assisted steering pump assembly for vehicle |
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Application publication date: 20170825 |
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