CN203268119U - Power steering system - Google Patents
Power steering system Download PDFInfo
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- CN203268119U CN203268119U CN 201320344517 CN201320344517U CN203268119U CN 203268119 U CN203268119 U CN 203268119U CN 201320344517 CN201320344517 CN 201320344517 CN 201320344517 U CN201320344517 U CN 201320344517U CN 203268119 U CN203268119 U CN 203268119U
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- oil pump
- valve
- deflector
- outlet
- oil
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Abstract
The embodiment of the utility model provides a power steering system which can solve the problem that steering power is not provided aiming at multiple working conditions in the prior art. The system is applied to a hybrid electric vehicle, and comprises an oil tank (1), a first three-way joint body (2), a primary oil pump (4), a secondary oil pump (3), a combined change-over valve (5), a second three-way joint body (6), a steering gear (7) and a control module (8). According to the power steering system, after a locomotive is started, pressure oil exists in any working condition, so that steering power is realized, and the steering power is always reliable and effective.
Description
Technical field
The utility model relates to oil (gas)-electricity mixed power electronlmobil, relates in particular to the steering boost system that a kind of mixed power electric car is used.
Background technology
Conventional gasoline, diesel oil, gas engine vehicle or pure electric vehicle, it turns to the oil pump that adopts single power to drive that auxiliary power is provided, then drive successively steering box, pitman arm, steering track rod, track arm etc., thereby make steeraxle (axle) turn to, but for oil (gas)-electricity mixed power electronlmobil, because it has multiple driving cycle, be engine operating condition, motor working condition and associating operating mode, in the prior art, also less than the steering boost system for above-mentioned various working.
The utility model content
Embodiment of the present utility model provides a kind of steering boost system, can solve prior art the problem of power steering is not provided for the various working situation.
Embodiment of the present utility model provides a kind of steering boost system, is applied to hybrid electric vehicle, comprising: oil tank, the first T-pipe joint body, main oil pump, auxiliary oil pump, Combination conversion valve, the second T-pipe joint body, deflector; Oil tank is communicated to respectively main oil pump and auxiliary oil pump by the first T-pipe joint body, to main oil pump and auxiliary oil pump fuel feeding; Main oil pump and auxiliary oil pump are communicated to deflector by combined directional valve, and provide power-assisted oil to deflector; Deflector and Combination conversion valve are communicated to oil tank by the second T-pipe joint body; Main oil pump is connected with driving engine, provides power by driving engine, and auxiliary oil pump is connected with steer motor, provides power by steer motor.
Described system also comprises control module, and it is connected with steer motor, in order to carry out following operation;
When engine operating condition only, make the main oil pump work that is connected in driving engine, so that main oil pump provides pressure oil to deflector;
When motor working condition only, make the auxiliary oil pump work that connects steer motor, so that auxiliary oil pump provides pressure oil to deflector;
When driving engine and electrical motor associating operating mode, control by control module and make the main oil pump work that is connected in driving engine, so that main oil pump provides pressure oil to deflector.
Described Combination conversion valve specifically comprises a two-position four way change valve and a bi-bit bi-pass change-over valve;
Described two-position four way change valve has upper inlet, lower inlet, the first outlet, the second outlet and one to be controlled mouthful, lower inlet and control mouth and be connected with main oil pump, and upper inlet is connected with auxiliary oil pump; The first outlet is connected with the import of bi-bit bi-pass change-over valve, the second outlet is connected with deflector, with the downstream of controlling a pipeline that mouth is connected and also be communicated to the second outlet, this pipeline with form the first joint to the pipeline of controlling mouthful, and second is exported to pipeline formation the second joint between deflector;
The outlet of described bi-bit bi-pass change-over valve is communicated to oil tank by the second T-pipe joint body.
Described Combination conversion valve also comprises: by pass valve, it is connected on the pressure oil pipeline in the second joint downstream, is used for when the pressure of pressure oil surpasses predetermined value, for overflowing partial pressure oil.
Described Combination conversion valve also comprises: two check valves, and before one of them is arranged on the second joint, after the second outlet, before another is arranged on the second joint, after the first joint.
According to the utility model, after locomotive starts, no matter which kind of operating mode has pressure oil, thereby realized power steering, guaranteed that power steering is effectively reliable all the time.
Description of drawings
Fig. 1 shows the steering boost system schematic diagram of the utility model embodiment.
The specific embodiment
Understand and realize the utility model for the ease of persons skilled in the art, now describing by reference to the accompanying drawings embodiment of the present utility model.
The utility model provides a kind of steering boost system, is applied to hybrid electric vehicle, and typically, hybrid electric vehicle comprises petrol power and electrodynamic combination, diesel and electrodynamic combination or gas power and electrodynamic combination, etc.
As shown in Figure 1, steering boost system of the present utility model comprises: oil tank 1, the first T-pipe joint body 2, main oil pump 4, auxiliary oil pump 3, Combination conversion valve 5, the second T-pipe joint body 6, deflector 7, control module 8.
Oil tank 1 is communicated to respectively main oil pump 4 and auxiliary oil pump 3 by the first T-pipe joint body 2, in order to shunt backward main oil pump 4 and auxiliary oil pump 3 fuel feeding by the oil outlet S of oil tank 1 through the first T-pipe joint body 2; Main oil pump 4 and auxiliary oil pump 3 are communicated to deflector 7 by Combination conversion valve 5, and the pressure oil of (13-15MPa) in working pressure range is provided to deflector 7; Deflector 7 and Combination conversion valve 5 are communicated to oil tank 1 by the second T-pipe joint body 6.
Main oil pump 4 is installed on driving engine one side and is connected with driving engine, provides power by driving engine.
Auxiliary oil pump 3 is installed on vehicle other position, as, position between chassis two longerons below bottom plate of driving cab, fore-and-aft direction is between driving engine and radiator, be connected and provide power by this motor with definite-purpose motor independently, as being connected with the steer motor (not shown), provide power by steer motor.
The inside of Combination conversion valve 5 is integrated two-position four way change valve, bi-bit bi-pass change-over valve, check valve, votage control switch, wherein, two-position four way change valve has upper inlet, lower inlet, the first outlet, the second outlet and a control mouth, lower inlet is connected with main oil pump with the control mouth, and upper inlet is connected with auxiliary oil pump; The first outlet is connected with the import of bi-bit bi-pass change-over valve, the second outlet is connected with deflector, with the downstream of controlling a pipeline that mouth is connected and also be communicated to the second outlet, this pipeline with form the first joint C to the pipeline of controlling mouthful, and second is exported to pipeline formation the second joint B between deflector; The oil inlet of Combination conversion valve 5 has 2 mouth P1, P2, specifically, is exactly two of lower inlet, the upper inlets of graphic two-position four way change valve, is connected to respectively the oil outlet P of main oil pump 4 and the oil outlet P of auxiliary oil pump 3.Through after graphic hydraulic circuit, form two outlets, one is high-pressure outlet A, another is low tension outlet T, A mouth wherein is connected to the oil inlet A of deflector 7 after out again, and T mouth wherein also is referred to as oil return inlet T, out again with the return opening C of deflector 7 through the second T-pipe joint body 6 interflow after, oil return is to the oil return inlet T of oil tank 1.
The outlet of bi-bit bi-pass change-over valve is communicated to oil tank 1 by the second T-pipe joint body 6.
Combination conversion valve 5 also comprises: by pass valve, it is connected on the pressure oil pipeline in the second joint B downstream, is used for when the pressure of pressure oil surpasses predetermined value, for overflowing partial pressure oil.
Combination conversion valve 5 also comprises: two check valves, and before one of them is arranged on the second joint B, after the second outlet, before another is arranged on the second joint B, after the first joint C.
When engine operating condition only, make main oil pump 4 work that are connected in driving engine, the pressure oil that main oil pump 4 pumps through the P1 of Combination conversion valve 5 mouth enter, the A mouth goes out, to deflector 7, thereby provide pressure oil to deflector 7, and then drive pitman arm, steering track rod, track arm, steeraxle (axle), realize turning to.In detail, after main oil pump 4 will pressurize from the oil of oil tank 1, be connected to the import P1 mouth of Combination conversion valve 5 by pipeline, the pressure oil of this mouthful has three flow directions, one, first via pressure oil enters the control mouth of the two-position four way change valve of hydraulically-controlled type, after the pressed home spring, make the control position of two-position four way change valve be in the mode of lower frame, namely, the station of " the second outlet that lower inlet P1 mouth is connected with upper one-way valve is connected, and the import of upper inlet P2 mouth and bi-bit bi-pass change-over valve is connected "; Its two, the second road pressure oil flows directly to the import of bottom check valve, then flows out from the outlet of this bottom check valve, after the by pass valve 51 of this Combination conversion valve 5, arrives the high-pressure outlet A of this Combination conversion valve 5; They are three years old, under the station that first via pressure oil has been determined, this place's pressure oil enters the import of two-position four way change valve, then flow out from the outlet of this two-position four way change valve, then enter successively " import of upper one-way valve ", flow out from this check valve outlet, after confluxing with the second road pressure oil, its downstream is connected with by pass valve 51, after the inside of this Combination conversion valve 5 by pass valve 51, arrives the high-pressure outlet A of this Combination conversion valve 5.
Then, high pressure oil through graphic pipeline, enters into the high-pressure inlet A of deflector 7 after flowing out from Combination conversion valve 5, and the internal combination mechanism by deflector then, thereby driving pitman arm, steering track rod, track arm, steeraxle (axle) realize turning to.Pressure oil after acting is pressure decreased subsequently, and the outlet C outflow from deflector is back to oil tank 1 through second " T-pipe joint body 6 ".
On the other hand, in auxiliary oil pump 3 mode of operations switch to the handoff procedure of main oil pump 4 mode of operations, residual pressure oil through auxiliary oil pump 3 is connected to the import P2 mouth of Combination conversion valve 5 by pipeline, then enter into the upper inlet of two-position four way change valve, the determined station of first via oil circuit according to the import P1 of combinations thereof change-over valve 5, flow out from the outlet of two-position four way change valve, enter into the import of bi-bit bi-pass change-over valve, flow out from its outlet again, arrive the low tension outlet T of this Combination conversion valve 5, finally be back to the oil return inlet T of oil tank 1.If the pressure of residual pressure oil is greater than predetermined threshold, can know by the votage control switch that is arranged on bi-bit bi-pass change-over valve exit, then according to knowing that result processes, as reporting to the police, by measures such as manual interventions to stop auxiliary oil pump 3 work.
When motor working condition only, make auxiliary oil pump 3 work that connect steer motor, the pressure oil that pumps through the P2 of Combination conversion valve 5 mouth enter, the A mouth goes out, to deflector 7, thereby provide pressure oil to deflector 7, and then drive pitman arm, steering track rod, track arm, steeraxle (axle), realize turning to.In detail, after auxiliary oil pump 3 will pressurize from the oil of oil tank 1, deliver to the import P2 mouth of Combination conversion valve 5 by pipeline, the whereabouts of this mouth pressure oil only has one the road to flow to, namely, upper inlet from the two-position four way change valve that enters into this valve 5 inside, flow out from the lower outlet of its two-position four way change valve, then enter the import of upper one-way valve, then flow out from the outlet of this upper one-way valve, after the by pass valve 51 of this Combination conversion valve 5, arrive the high-pressure outlet A of this Combination conversion valve 5; High pressure oil enters the high-pressure inlet of deflector after flowing out from the high-pressure outlet A of Combination conversion valve 5, then by internal combination mechanism driving pitman arm, steering track rod, track arm, the steeraxle (axle) of deflector, realizes turning to.Pressure oil after acting is pressure decreased subsequently, and the outlet C outflow from deflector is back to oil tank 1 through second " T-pipe joint body 6 " successively.What need explanation is a bit, the whereabouts of this place (P2 mouth) pressure oil why with above-mentioned " engine operating condition " under inconsistent, because do not have " effect of its P1 oral fluid governor pressure oil " to force the station of its two-position four way change valve and aforementioned identical, thus at the effect down conversion of the retracing spring of two-position four way change valve station.
According to the utility model, be provided with by pass valve 51 in Combination conversion valve 5, the oil inlet of this by pass valve 51 and oil outlet are connected in the pressure oil path, and the return opening of by pass valve 51 is connected in the low pressure oil path.Like this, if in case the pressure of pressure oil surpasses predetermined threshold, and the high pressure oil of the by pass valve 51 of flowing through will some release, that is, this partial pressure oil flow to the low tension outlet T of this Combination conversion valve 5, finally flow back into the oil return inlet T of oil tank 1.Thereby can protect each components and parts safe operation of hydraulic circuit, make system stable operation.
More annotated is that under motor working condition, the effect of the bottom check valve of Combination conversion valve 5 can be protected main oil pump 4, makes system works normal.Because, can't oppositely pass through the bottom check valve by two-position four way change valve high pressure oil out wherein, enter main oil pump 4.
When driving engine and electrical motor associating operating mode, because driving engine and main drive motor all turn round, control by control module 8 and make main oil pump 4 work that are connected in driving engine, and provide pressure oil to deflector 7.Close steer motor by control module 8 according to preset program, auxiliary oil pump 3 is not worked.
Preferably, the range of pressure of pressure oil is 13-15MPa.
Therefore, according to the utility model, after locomotive starts, no matter which kind of operating mode has pressure oil, thereby realized power steering, guaranteed that power steering is effectively reliable all the time.
Although described the utility model by embodiment, but those of ordinary skills know, in the situation that do not break away from spirit of the present utility model and essence, just can make the utility model that many distortion and variation are arranged, scope of the present utility model is limited to the appended claims.
Claims (5)
1. a steering boost system, be applied to hybrid electric vehicle, it is characterized in that, comprising:
Oil tank (1), the first T-pipe joint body (2), main oil pump (4), auxiliary oil pump (3), Combination conversion valve (5), the second T-pipe joint body (6), deflector (7);
Oil tank (1) is communicated to respectively main oil pump (4) and auxiliary oil pump (3) by the first T-pipe joint body (2), to main oil pump (4) and auxiliary oil pump (3) fuel feeding; Main oil pump (4) and auxiliary oil pump (3) are communicated to deflector (7) by combined directional valve (5), and provide power-assisted oil to deflector (7); Deflector (7) and Combination conversion valve (5) are communicated to oil tank (1) by the second T-pipe joint body (6);
Main oil pump (4) is connected with driving engine, provides power by driving engine, and auxiliary oil pump (3) is connected with steer motor, provides power by steer motor.
2. steering boost system according to claim 1, is characterized in that, described system also comprises control module (8), and it is connected with steer motor, in order to carry out following operation;
When engine operating condition only, make main oil pump (4) work that is connected in driving engine, so that main oil pump (4) provides pressure oil to deflector (7);
When motor working condition only, make auxiliary oil pump (3) work that connects steer motor, so that auxiliary oil pump (3) provides pressure oil to deflector (7);
When driving engine and electrical motor associating operating mode, control by control module (8) and make main oil pump (4) work that is connected in driving engine, so that main oil pump (4) provides pressure oil to deflector (7).
3. steering boost system according to claim 1, is characterized in that, described Combination conversion valve (5) specifically comprises a two-position four way change valve and a bi-bit bi-pass change-over valve;
Described two-position four way change valve has upper inlet, lower inlet, the first outlet, the second outlet and one to be controlled mouthful, lower inlet and control mouth and be connected with main oil pump, and upper inlet is connected with auxiliary oil pump; The first outlet is connected with the import of bi-bit bi-pass change-over valve, the second outlet is connected with deflector, a pipeline that is connected with the control mouth also is communicated to the downstream of the second outlet, this pipeline with form the first joint (C) to the pipeline of controlling mouthful, and second is exported to that between deflector, pipeline forms the second joint (B);
The outlet of described bi-bit bi-pass change-over valve is communicated to oil tank (1) by the second T-pipe joint body (6).
4. steering boost system according to claim 3, it is characterized in that, described Combination conversion valve (5) also comprises: by pass valve, it is connected on the pressure oil pipeline in the second joint (B) downstream, is used for overflowing partial pressure oil when the pressure of pressure oil surpasses predetermined value.
5. steering boost system according to claim 3, it is characterized in that, described Combination conversion valve (5) also comprises: two check valves, one of them be arranged on the second joint (B) before, second the outlet after, another be arranged on the second joint (B) before, the first joint (C) afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320344517 CN203268119U (en) | 2013-06-14 | 2013-06-14 | Power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320344517 CN203268119U (en) | 2013-06-14 | 2013-06-14 | Power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203268119U true CN203268119U (en) | 2013-11-06 |
Family
ID=49498580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320344517 Expired - Fee Related CN203268119U (en) | 2013-06-14 | 2013-06-14 | Power steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203268119U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3187394A3 (en) * | 2015-12-29 | 2017-12-20 | Nuctech Company Limited | Power-assisted steering system and mobile inspection device |
| CN108313121A (en) * | 2017-01-18 | 2018-07-24 | 郑州宇通客车股份有限公司 | A kind of compound accessories apparatus of integrated form and the electric vehicle using the device |
-
2013
- 2013-06-14 CN CN 201320344517 patent/CN203268119U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3187394A3 (en) * | 2015-12-29 | 2017-12-20 | Nuctech Company Limited | Power-assisted steering system and mobile inspection device |
| US10093353B2 (en) * | 2015-12-29 | 2018-10-09 | Nuctech Company Limited | Power-assisted steering system and mobile inspection device |
| CN108313121A (en) * | 2017-01-18 | 2018-07-24 | 郑州宇通客车股份有限公司 | A kind of compound accessories apparatus of integrated form and the electric vehicle using the device |
| CN108313121B (en) * | 2017-01-18 | 2023-12-15 | 宇通客车股份有限公司 | Integrated composite accessory device and electric automobile using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20180614 |