CN107628103A - Method of testing, system and the vehicle of double loop hydraulic booster steering - Google Patents
Method of testing, system and the vehicle of double loop hydraulic booster steering Download PDFInfo
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- CN107628103A CN107628103A CN201710706496.8A CN201710706496A CN107628103A CN 107628103 A CN107628103 A CN 107628103A CN 201710706496 A CN201710706496 A CN 201710706496A CN 107628103 A CN107628103 A CN 107628103A
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Abstract
The invention discloses a kind of method of testing, system and the vehicle of double loop hydraulic booster steering, double loop hydraulic booster steering includes：First oil tank connects steering gear by main steering pump, emergent switching valve and forms the first loop, second oil tank connects steering gear by emergent steering pump, emergent switching valve and forms second servo loop, the first end of switching valve is connected with main steering pump, second end of switching valve is connected with emergent switching valve, 3rd end of switching valve is connected with the first oil tank, and method includes：When testing main steering pump unusual service condition, switching switching valve is so that the first end of switching valve is connected with the 3rd end of switching valve, so that the flow of main steering pump flows back to the first oil tank；Test the changes in flow rate and steering wheel torque data in the first loop and second servo loop.The present invention is easy to tester directly to test the different operating modes of steering, solves and make it that the test data time is short and the big problem of data analysis difficulty because engine stops working suddenly.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of method of testing of double loop hydraulic booster steering,
System and vehicle.
Background technology
The method of testing of emergent steering domestic at present is that driver drives vehicle and kept in the circle that radius is 20 meters
Speed travels in 10Km/h, makes engine stop working suddenly, measurement direction disk torque and steering wheel actuation time.However, this survey
Method for testing causes time of vehicle operation too short because speed is smaller after engine is flame-out suddenly and heavier loads, during measurement data
Between it is shorter, data analysis difficulty is larger, in addition, this method of testing is difficult to analyze when the situation of main steering pump underfed
Under, steering major loop and emergency loop changes in flow rate.
The content of the invention
It is contemplated that at least solves one of technical problem in above-mentioned correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of method of testing of double loop hydraulic booster steering.Should
The method of testing of double loop hydraulic booster steering changes the flow direction of the flow of main reversing pump, can simulate master by reversal valve
Steering pump descends the fuel feeding situation of two way circuit hydraulic power-assist steering system extremely, is easy to tester can be to the difference of steering
Operating mode is directly tested, and is solved and make it that the test data time is short and data analysis difficulty is big because engine stops working suddenly
Problem.
It is another object of the present invention to propose a kind of double loop hydraulic booster steering.
Another object of the present invention is to propose a kind of vehicle.
To achieve these goals, an aspect of of the present present invention discloses a kind of test of double loop hydraulic booster steering
Method, the double loop hydraulic booster steering include：First oil tank, the second oil tank, main steering pump, emergent steering pump, turn
To valve, emergent switching valve, steering gear, first oil tank is connected the steering gear and formed by main steering pump, emergent switching valve
First loop, second oil tank connect the steering gear by the emergent steering pump, emergent switching valve and form second servo loop,
The first end of the switching valve is connected with the main steering pump, and the second end of the switching valve is connected with the emergent switching valve,
3rd end of the switching valve is connected with first oil tank, and methods described includes：Testing the main steering pump unusual service condition
When, switch the switching valve so that the first end of switching valve is connected with the 3rd end of switching valve, so that the traffic flow of main steering pump
Return the first oil tank and realize the main steering pump total failure mode of simulation；Test the changes in flow rate of first loop and second servo loop with
And steering wheel torque data.
According to the method for testing of the double loop hydraulic booster steering of the present invention, by reversal valve, change main reversing pump
Flow flow direction, the fuel feeding situation that main steering pump descends two way circuit hydraulic power-assist steering system extremely can be simulated, be easy to test
Personnel can be directly tested the different operating modes of steering, are avoided and are caused test data because engine stops working suddenly
Time is short and data analysis difficulty is big.
In addition, the method for testing of double loop hydraulic booster steering according to the above embodiment of the present invention can also have
Additional technical characteristic as follows：
Further, including：When testing the main steering pump underfed operating mode, switching switching valve is so that switching valve
First end is connected with the second end of switching valve, so that low discharge steering pump flows to the steering gear with predetermined amount of flow；Described in test
First loop and the changes in flow rate and steering wheel torque data of second servo loop.
Further, including：Test it is main steering pump discharge nominal situation when, switching switching valve so that switching valve first
End is connected with the second end of switching valve, so that steering gear described in the flux and flow direction of main steering pump；Test first loop and
The changes in flow rate and steering wheel torque data of secondary circuit.
Further, in addition to：When testing main steering pump unusual service condition and testing main steering pump underfed operating mode
Shi Jinhang is prompted.
Another aspect of the present invention discloses a kind of double loop hydraulic booster steering, including：First oil tank, the second oil
Tank, main steering pump, steering pump of meeting an urgent need, switching valve of meeting an urgent need, steering gear, first oil tank pass through main steering pump, emergent switching valve
Connect the steering gear and form the first loop, second oil tank passes through described in the emergent steering pump, emergent switching valve connection
Steering gear forms second servo loop；Switching valve, the first end of the switching valve are connected with the main steering pump, and the of the switching valve
Two ends are connected with the emergent switching valve, and the 3rd end of the switching valve is connected with first oil tank；Controller, the control
Device is used for according to different measurement conditions, switches the switching valve to control the flow direction of the flow of the main steering pump, to determine
State the changes in flow rate and steering wheel torque data in the first loop and second servo loop.
According to the double loop hydraulic booster steering of the present invention, by reversal valve, change the stream of the flow of main reversing pump
To, the fuel feeding situation that main steering pump descends two way circuit hydraulic power-assist steering system extremely can be simulated, be easy to tester can to turn
Directly tested to the different operating modes of system, avoid and make it that the test data time is short and counts because engine stops working suddenly
It is big according to analysis difficulty.
In addition, double loop hydraulic booster steering according to the above embodiment of the present invention can also have what is added as follows
Technical characteristic：
Further, the controller is specifically used for when testing the main steering pump unusual service condition, switches the steering
Valve is so that the first end of the switching valve is connected with the 3rd end of the switching valve, so that the flow of the main steering pump flows back to institute
State the first oil tank and realize the main steering pump total failure mode of simulation, to determine to test the flow of first loop and second servo loop
Change and steering wheel torque data.
Further, the controller is specifically used for when testing the main steering pump underfed operating mode, described in switching
Switching valve is so that the first end of the switching valve is connected with the second end of the switching valve, so that low discharge steering pump is with pre- constant current
Amount flows to the steering gear, to determine to test the changes in flow rate and steering wheel torque number of first loop and second servo loop
According to.
Further, the controller is specifically used for when testing the main steering pump discharge nominal situation, described in switching
Switching valve is so that the first end of the switching valve is connected with the second end of the switching valve, so that the traffic flow of the main steering pump
To the steering gear, to determine to test the changes in flow rate and steering wheel torque data of first loop and second servo loop.
Further, in addition to：Emergent reminding turning device, the emergent reminding turning device are used for different in the main steering pump of test
Prompted during normal operating mode and when testing main steering pump underfed operating mode.
The third aspect of the present invention discloses a kind of vehicle, including the double loop according to any one above-mentioned embodiment
Hydraulic power-assist steering system.The vehicle changes the flow direction of the flow of main reversing pump, it is abnormal to simulate main steering pump by reversal valve
The fuel feeding situation of lower two way circuit hydraulic power-assist steering system, it is easy to tester directly to enter to the different operating modes of steering
Row test, avoid and make it that the test data time is short and data analysis difficulty is big because engine stops working suddenly.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the method for testing of double loop hydraulic booster steering according to an embodiment of the invention；
Fig. 2 is the structure chart of double loop hydraulic booster steering according to an embodiment of the invention；
Fig. 3 is the schematic diagram of double loop hydraulic booster steering according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
The method of testing of double loop hydraulic booster steering according to embodiments of the present invention is described below in conjunction with accompanying drawing, is
System and vehicle.
Fig. 1 is the flow chart of the method for testing of double loop hydraulic booster steering according to an embodiment of the invention.
As shown in figure 1, the method for testing of double loop hydraulic booster steering according to an embodiment of the invention, bag
Include：
Before method is introduced, two way circuit hydraulic booster is introduced first, and with reference to shown in Fig. 2, double loop hydraulic booster turns
Include to system：First oil tank 1, the second oil tank 7, main steering pump 2, emergent steering pump 3, switching valve 4, emergent switching valve 5, steering
Device 6, servo-cylinder 7, first oil tank 1 connect steering gear 6 by main steering pump 2, emergent switching valve 4 and form the first loop, i.e.
First loop is the oil stream of main steering pump 2 to the P1 mouths of emergent switching valve 5, and steering gear 6 is flowed to from the A mouths of emergent switching valve 5,
Two oil tanks 7 connect steering gear 6 by emergent steering pump 3, emergent switching valve 5 and form second servo loop, and second servo loop is emergent steering
Pump meets an urgent need flux and flow direction switching valve P2 mouths, and steering gear 6 is flowed to from the A mouths of emergent switching valve 5.Wherein, switching valve 4 is arranged on
On primary Ioops, the first end 11 of switching valve is connected with main steering pump 2, and the second end 12 of switching valve is connected with emergent switching valve 5, turns
It is connected to the 3rd end 13 of valve with the first oil tank 1.Wherein, switching valve 4 can be electromagnetic steering valve.
Wherein, when under normal circumstances, the first loop is to the fuel feeding of steering gear 6, and in second servo loop, the stream for steering pump 3 of meeting an urgent need
The emergent switching valve P2 mouths of amount flow direction, are flowed back in the second oil tank 7 from the T mouths of emergent switching valve 5, i.e. in normal fuel injection, the first loop
Fuel feeding, second servo loop not fuel feeding.When main steering pump 2 is abnormal, the first loop, steering gear 6 is flowed to from the A mouths of emergent switching valve 5
There is no flow or seldom be not enough to use for steering gear 6, at this moment, start second servo loop fuel feeding, with reference to shown in Fig. 3, answer racing
To the emergent switching valve P2 mouths of flux and flow direction of pump 3, steering gear 6 is flowed to from the A mouths of emergent switching valve 5.
S110：When testing main steering pump unusual service condition, switching switching valve is so that the first end and switching valve of switching valve
3rd end is connected, so that the flow of main steering pump, which flows back to the first oil tank, realizes the main steering pump total failure mode of simulation.
Specifically, simulate the abnormal operating mode of main steering pump 2, be i.e. flow out pole from the T mouths of emergent switching valve 5 in the first loop
Few oil uses for steering gear 6, from the oil of second servo loop supply steering gear 6.If testing this unusual service condition of main steering pump 2,
The P1 mouths from the oil stream of main steering pump 2 to emergent switching valve 5 must be prevented, so, switching valve 4 will be switched so that switching valve the
One end 11 is connected with the 3rd end 13 of switching valve, so that the flow of main steering pump 2 flows back to the first oil tank 1, prevents to turn from main
To the oil stream of pump 2 to the P1 mouths of emergent switching valve 5, at this moment second servo loop fuel feeding.
S120：Test the changes in flow rate and steering wheel torque data in the first loop and second servo loop.
Specifically, the changes in flow rate tested in the first loop, the flow direction change tested in second servo loop, test only exist
In the case of second servo loop fuel feeding, steering wheel torque data, i.e. the situation that driver turn steering wheel is exerted oneself can be detected.
According to the method for testing of the double loop hydraulic booster steering of the present invention, by reversal valve, change main reversing pump
Flow flow direction, the fuel feeding situation that main steering pump descends double loop hydraulic booster steering extremely can be simulated, be easy to tester
Member the different operating modes of steering can directly be tested, solve due to engine suddenly stop working and cause test data when
Between the short and big problem of data analysis difficulty.
In certain embodiments, when testing main 2 underfed operating mode of steering pump, switching switching valve 4 is so that switching valve
First end 11 is connected with the second end 12 of switching valve, so that low discharge steering pump flows to steering gear 6, test first with predetermined amount of flow
Loop and the changes in flow rate and steering wheel torque data of second servo loop.Wherein, the main underfed operating mode of steering pump 2 is being tested
When, i.e. main steering pump 2 has flow, but seldom, at this moment we can be turned using a low discharge steering pump to substitute main flow
Flowed to pump 2 with predetermined amount of flow in steering gear 6.
Specifically, it is desirable to when testing main 2 underfed operating mode of steering pump, the first loop is normally to the fuel feeding of steering gear 6, and
Secondary circuit not to the fuel feeding of steering gear 6, at this moment the situation of the first loop and second servo loop fuel feeding with it is normal when it is identical, i.e. switching turns
To valve 4 so that the first end 11 of switching valve is connected with the second end 12 of switching valve, main steering pump 2 is simply controlled to switch to pre- constant current
The steering pump of amount, predetermined amount of flow is used for steering gear 6, test the first loop at this moment and second servo loop changes in flow rate and
Steering wheel torque data, wherein, predetermined amount of flow is less than 7L/min.
In certain embodiments, when testing main 2 flow nominal situation of steering pump, switching switching valve 4 is so that switching valve
First end 11 is connected with the second end 12 of switching valve so that the flux and flow direction steering gear 6 of main steering pump 2, the first loop of test and
The changes in flow rate and steering wheel torque data of second servo loop.
At this moment, the first loop supply steering gear 6, emergent steering pump 3 in second servo loop meet an urgent need flux and flow direction switching valve
P2 mouths, flowed back to from the T mouths of emergent switching valve 5 in the second oil tank 7.
In certain embodiments, in addition to：When testing main steering pump unusual service condition and testing main steering pump discharge not
Prompted during sufficient operating mode.It can so prompt driver or tester's vehicle that main steering pump is abnormal or main steering carrying out
In the test of pump discharge deficiency operating mode.Wherein, prompting can install emergent steering trouble light in instrument board, when in main turn of test
To during pump unusual service condition and when testing main steering pump underfed operating mode, trouble light is bright, when main steering pump 2 is normal, failure
Lamp does not work.
Fig. 2 is the structure chart of double loop hydraulic booster steering according to an embodiment of the invention.
As shown in Fig. 2 the double loop hydraulic booster steering of one embodiment of the invention, including：First oil tank 1, the
Two oil tanks 7, main steering pump 2, steering pump 3 of meeting an urgent need, switching valve 4, switching valve 5 of meeting an urgent need, steering gear 6, controller 8.
Wherein, the first oil tank 1 connects steering gear 6 by main steering pump 2, emergent switching valve 5 and forms the first loop, the second oil
Tank 7 connects steering gear 6 by emergent steering pump 3, emergent switching valve 5 and forms second servo loop；The first end 11 of switching valve turns with main
It is connected to pump 2, the second end 12 of switching valve is connected with emergent switching valve 5, and the 3rd end 13 of switching valve is connected with the first oil tank 1；
Controller 8 is used for according to different measurement conditions, and switching switching valve 4 is to control the flow direction of the flow of main steering pump 2, to determine first
Loop and the changes in flow rate and steering wheel torque data of second servo loop.In addition, controller 8 can be controlled using electromagnetism,
And it is disposed in driver's cabin.
Wherein, when under normal condition operating mode, the first loop is to the fuel feeding of steering gear 6, and in second servo loop, steering pump 3 of meeting an urgent need
Flux and flow direction meet an urgent need switching valve P2 mouths, flowed back to from the T mouths of emergent switching valve 5 in the second oil tank 7, i.e. in normal fuel injection, first
Loop fuel feeding, second servo loop not fuel feeding.When main steering pump 2 is abnormal, the first loop, turned to from the A mouths flow direction of emergent switching valve 5
6 no flow of device seldom is not enough to use for steering gear 6, at this moment, starts second servo loop fuel feeding, with reference to shown in Fig. 3, meets an urgent need
The emergent switching valve P2 mouths of the flux and flow direction of steering pump 3, steering gear 6 is flowed to from the A mouths of emergent switching valve 5.In addition, by switching valve 4
Set in the first loop, control switching switching valve 4 to make driving to control the flow direction of the flow of main steering pump 2 by controller 8
Member or tester etc. can switch the steering of different conditions directly in driver's cabin, be tested.
Particularly, the first oil tank 1 and the second oil tank 7 can be same oil tank.
According to the double loop hydraulic booster steering of the present invention, by reversal valve, change the stream of the flow of main reversing pump
To, can simulate under main steering pump exception, the fuel feeding situation of double loop hydraulic booster steering, be easy to tester can to turn to
The different operating modes of system are directly tested, and are solved and make it that the test data time is short and data because engine stops working suddenly
Analyze the big problem of difficulty.
In certain embodiments, controller 8 be specifically used for when test main 2 unusual service condition of steering pump, switch switching valve 4 with
The first end 11 of switching valve is set to be connected with the 3rd end 13 of switching valve, so that the flow of main steering pump 2 flows back to the first oil tank 1, with
It is determined that the changes in flow rate and steering wheel torque data of the first loop of test and second servo loop.
In certain embodiments, controller 8 is specifically used for when testing main 2 underfed operating mode of steering pump, and switching turns to
Valve 4 is so that the first end 11 of switching valve is connected with the second end 12 of switching valve, so that main steering pump 2 flows to steering with predetermined amount of flow
Device 6, to determine the changes in flow rate and steering wheel torque data in the first loop of test and second servo loop.
In certain embodiments, controller 8 is specifically used for when testing main 2 flow nominal situation of steering pump, and switching turns to
Valve 4 is so that the first end 11 of switching valve is connected with the second end 12 of the switching valve, so that the flux and flow direction of main steering pump 2 turns to
Device 6, to determine the changes in flow rate and steering wheel torque data in the first loop of test and second servo loop.
In certain embodiments, in addition to：Emergent reminding turning device, reminding turning device of meeting an urgent need are used to test main steering pump
Prompted during unusual service condition and when testing main steering pump underfed operating mode.
Further, embodiment of the invention discloses that a kind of vehicle, the vehicle are provided with any one above-mentioned embodiment
Described double loop hydraulic booster steering.The vehicle is changed the flow direction of the flow of main reversing pump, can simulated by reversal valve
Main steering pump descends the fuel feeding situation of double loop hydraulic booster steering extremely, is easy to tester can be to the difference of steering
Operating mode is directly tested, and is solved and make it that the test data time is short and data analysis difficulty is big because engine stops working suddenly
Problem.
Particularly, the vehicle can be heavy-duty commercial vehicle.
In addition, other compositions of vehicle according to embodiments of the present invention and effect are for one of ordinary skill in the art
For be all known, in order to reduce redundancy, do not repeat.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of method of testing of double loop hydraulic booster steering, it is characterised in that the double loop hydraulic booster turns to
System includes：First oil tank, the second oil tank, main steering pump, emergent steering pump, switching valve, emergent switching valve, steering gear, it is described
First oil tank connects the steering gear by main steering pump, emergent switching valve and forms the first loop, and second oil tank passes through institute
State emergent steering pump, emergent switching valve connects the steering gear and forms second servo loop, the first end of the switching valve and the master
Steering pump is connected, and the second end of the switching valve is connected with the emergent switching valve, the 3rd end of the switching valve and described the
One oil tank is connected, and methods described includes：
When testing the main steering pump unusual service condition, switch the switching valve so that switching valve first end and switching valve
Three ends are connected, so that the flow of main steering pump, which flows back to the first oil tank, realizes the main steering pump total failure mode of simulation；
Test the changes in flow rate and steering wheel torque data of first loop and second servo loop.
2. the method for testing of double loop hydraulic booster steering according to claim 1, it is characterised in that including：
When testing the main steering pump underfed operating mode, switching switching valve so that switching valve first end and switching valve the
Two ends are connected, so that low discharge steering pump flows to the steering gear with predetermined amount of flow；
Test the changes in flow rate and steering wheel torque data of first loop and second servo loop.
3. the method for testing of double loop hydraulic booster steering according to claim 1, it is characterised in that including：
When testing main steering pump discharge nominal situation, switching switching valve is so that the first end of switching valve and the second end of switching valve
It is connected, so that steering gear described in the flux and flow direction of main steering pump；
Test the changes in flow rate and steering wheel torque data of first loop and second servo loop.
4. the method for testing of the double loop hydraulic booster steering according to Claims 2 or 3, it is characterised in that also wrap
Include：
Prompted when testing main steering pump unusual service condition and when testing main steering pump underfed operating mode.
A kind of 5. double loop hydraulic booster steering, it is characterised in that including：
First oil tank, the second oil tank, main steering pump, steering pump of meeting an urgent need, switching valve of meeting an urgent need, steering gear, first oil tank pass through
Main steering pump, emergent switching valve connect the steering gear and form the first loop, second oil tank by the emergent steering pump,
Emergent switching valve connects the steering gear and forms second servo loop；
Switching valve, the first end of the switching valve are connected with the main steering pump, and the second end of the switching valve is met an urgent need with described
Switching valve is connected, and the 3rd end of the switching valve is connected with first oil tank；
Controller, the controller are used for according to different measurement conditions, switch the switching valve to control the main steering pump
The flow direction of flow, to determine the changes in flow rate in first loop and second servo loop and steering wheel torque data.
6. double loop hydraulic booster steering according to claim 5, it is characterised in that the controller is specifically used for
When testing the main steering pump unusual service condition, switch the switching valve so that the first end of the switching valve and the switching valve
The 3rd end be connected realize so that the flow of the main steering pump flows back to first oil tank and simulate the main entirely ineffective shape of steering pump
State, to determine to test the changes in flow rate and steering wheel torque data of first loop and second servo loop.
7. double loop hydraulic booster steering according to claim 5, it is characterised in that the controller is specifically used for
When testing the main steering pump underfed operating mode, switch the switching valve so that the first end of the switching valve and described turn
It is connected to the second end of valve, so that the low discharge steering pump flows to the steering gear with predetermined amount of flow, to determine described in test
First loop and the changes in flow rate and steering wheel torque data of second servo loop.
8. double loop hydraulic booster steering according to claim 5, it is characterised in that the controller is specifically used for
When testing the main steering pump discharge nominal situation, switch the switching valve so that the first end of the switching valve and described turn
It is connected to the second end of valve, so that steering gear described in the flux and flow direction of the main steering pump, to determine to test first loop
With the changes in flow rate and steering wheel torque data of second servo loop.
9. double loop hydraulic booster steering according to claim 5, it is characterised in that also include：
Emergent reminding turning device, the emergent reminding turning device are used for when testing main steering pump unusual service condition and in main turn of test
Prompted during to pump discharge deficiency operating mode.
A kind of 10. vehicle, it is characterised in that including：Double loop hydraulic booster according to claim any one of 5-9 turns to
System.
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| CN201710706496.8A CN107628103B (en) | 2017-08-17 | 2017-08-17 | Test method, system and the vehicle of double loop hydraulic booster steering system |
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| CN201710706496.8A CN107628103B (en) | 2017-08-17 | 2017-08-17 | Test method, system and the vehicle of double loop hydraulic booster steering system |
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| CN107628103B CN107628103B (en) | 2019-10-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450851A (en) * | 2019-08-28 | 2019-11-15 | 南京越博动力系统股份有限公司 | A kind of electric hydraulic power-assisted steering pump controller detection system |
| CN113237675A (en) * | 2021-05-21 | 2021-08-10 | 际络科技(上海)有限公司 | Hydraulic failure testing system, method and device for automatic driving |
| CN113942569A (en) * | 2021-11-30 | 2022-01-18 | 东风商用车有限公司 | Emergency power-assisted steering system and method |
| CN114802431A (en) * | 2022-05-30 | 2022-07-29 | 中汽北消(北京)应急装备科技有限公司 | Composite steering system of large transport vehicle |
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| US20080271941A1 (en) * | 2007-05-03 | 2008-11-06 | Jcb Landpower Limited | Vehicle |
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| CN203427875U (en) * | 2013-07-22 | 2014-02-12 | 上汽依维柯红岩商用车有限公司 | Steering system of heavy commercial automobile |
| US20150198507A1 (en) * | 2014-01-15 | 2015-07-16 | Caterpillar, Inc. | Increased Pressure for Emergency Steering Pump Startup Test |
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| CN205890975U (en) * | 2016-08-18 | 2017-01-18 | 陕西同力重工股份有限公司 | Two return circuits of emergent formula turn to device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110450851A (en) * | 2019-08-28 | 2019-11-15 | 南京越博动力系统股份有限公司 | A kind of electric hydraulic power-assisted steering pump controller detection system |
| CN113237675A (en) * | 2021-05-21 | 2021-08-10 | 际络科技(上海)有限公司 | Hydraulic failure testing system, method and device for automatic driving |
| CN113942569A (en) * | 2021-11-30 | 2022-01-18 | 东风商用车有限公司 | Emergency power-assisted steering system and method |
| CN114802431A (en) * | 2022-05-30 | 2022-07-29 | 中汽北消(北京)应急装备科技有限公司 | Composite steering system of large transport vehicle |
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