CN105270372A - Regenerative brake hydraulic valve and brake method thereof - Google Patents
Regenerative brake hydraulic valve and brake method thereof Download PDFInfo
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- CN105270372A CN105270372A CN201410359102.2A CN201410359102A CN105270372A CN 105270372 A CN105270372 A CN 105270372A CN 201410359102 A CN201410359102 A CN 201410359102A CN 105270372 A CN105270372 A CN 105270372A
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Abstract
The invention discloses a regenerative brake hydraulic valve and a brake method thereof. The regenerative brake hydraulic valve comprises a valve body, a main valve element, an adjusting assembly and a first elastic piece. A valve cavity is formed in the valve body. The valve body is provided with an inlet and an outlet which communicate with the valve cavity. The main valve element is arranged in the valve cavity. The main valve element moves in the valve cavity in the braking process so as to open or close the inlet and/or the outlet. The adjusting assembly is arranged at the end, away from the inlet, of the valve cavity to limit the movement stroke of the valve element in the valve cavity and is connected with the main valve element to assist in communication of the inlet and the outlet. One end of the first elastic piece abuts against the main valve element, the other end of the first elastic piece abuts against the adjusting assembly, and the main valve element is reset after braking is finished. By means of the regenerative brake hydraulic valve, the pipe pressure can be lowered greatly under the condition that the stroke of a brake pedal is not changed, and superposed brake force is lowered, so that the brake performance and brake feeling are better.
Description
Technical field
The present invention relates to a kind of hydraulic valve, be specifically related to a kind of regenerative brake hydraulic valve and braking method thereof.
Background technology
When carrying out feedback braking research, there is a kind of way to be continue to use former traditional vehicle, adopting vacuum boost system, motor braking power and hydraulic braking force directly being added on the driving shaft, causes the sudden change of original braking force.As shown in Figure 4, because braking force below has interference (if there is ABS to original motor braking power, also can have an impact to ABS), after two kinds of braking force superpositions, total braking force is changed, the change of braking force directly causes brake torque to change, and finally have impact on deceleration and stopping performance and the brake feel of chaufeur when car brakeing of vehicle.And when the braking force needed is less than motor maximum braking force, can not ensures that motor braking power works separately, be unfavorable for that energy reclaims to greatest extent.
Prior art is generally by changing existing braking center valve type master cylinder.General by being master cylinder is set up a central valve to become pair center valve type brake main cylinder assembly at existing central valve.This central valve set up comprises cylinder body, piston, return springs and central valve, and central valve is assemblied in the shoulder cavity that piston head end offers, and it is made up of valve push rod, valve seals, valve return elastic component, locating dowel pin.Central valve moves with piston and opens or close runner, therefore can control the brake fluid pressure of brake chamber.But when the stroke of brake pedal is constant, significantly can not reduce line pressure by this structure, can not leave working space for motor braking, therefore this structure can not meet the transformation requirement of regeneration brake system to former conventional hydraulic brake system.
Summary of the invention
A technical matters to be solved by this invention provides a kind of regenerative brake hydraulic valve, its can reduce greatly when the stroke of brake pedal is constant line pressure, reduce superposition after braking force thus make deceleration and stopping performance and brake feel better.
Technical solution of the present invention is, provides a kind of regenerative brake hydraulic valve with following structure, comprising:
Valve body, is provided with valve pocket in valve body, and valve body is provided with import and outlet, and described import is communicated with valve pocket respectively with outlet;
Main valve plug, is located in valve pocket, and during braking, main valve plug moves thus is communicated with or closes import and/or outlet in valve pocket;
Adjusting part, is located at valve pocket one end away from import, the movement travel of restriction spool in valve pocket, and is connected with main valve plug with auxiliary communication import and outlet;
First elastic component, its one end is against on main valve plug, and the other end is against on adjusting part, makes main valve plug reset upon completion of the braking.
Compared with prior art, regenerative brake hydraulic valve of the present invention has the following advantages: when braking, by the booster action of adjusting part, import and outlet, make not only have loss of travel to also have Pressure Drop through this braking liquid pressure valve, this braking liquid pressure valve is connected on the pipeline of master brake cylinder, can realizes reducing line pressure greatly when the stroke of brake pedal is constant.Owing to reducing line pressure, the braking force that after reducing superposition, chaufeur is experienced, braking distance is also restricted simultaneously, deceleration and stopping performance can be made better, feeling braking force change during chaufeur braking, difference is very little compared with braking force before does not even have difference, and brake feel or braking are experienced better.
One as regenerative brake hydraulic valve of the present invention is improved, described main valve plug comprises the center cavity being located at middle part and the snout cavity be located near entrance point, described center cavity and the passage be provided with between snout cavity for being communicated with, be provided with the center spool coordinated with passage to open and close passage in described snout cavity.When center spool movable passageway is opened, center cavity is communicated with snout cavity, and a part of hydraulic oil wherein entered from import flows out from outlet.Flow out mineralization pressure through center cavity from outlet to fall, namely in center cavity, hydraulic oil does not do work, but has formation loss, makes reduce line pressure when the stroke of brake pedal is constant.
Another kind as regenerative brake hydraulic valve of the present invention improves, and is provided with the second elastic component in described snout cavity, and one end of described second elastic component is against on the spool of center, and the other end is against snout cavity inwall.After center spool is opened under force, after the pressure in center cavity reduces, the elastic force effect of the second elastic component makes center valve core reset block passage between center cavity and snout cavity.
One as regenerative brake hydraulic valve of the present invention is preferred, and described main valve plug leaves pressure chamber near between one end and valve body of import, and pressure chamber is communicated with by the intake vent vertical with the axis direction of valve body with center cavity.When braking, the high pressure liquid force feed of import is backed down main valve plug and is entered pressure chamber, and enters center cavity through passage.
The one that also has as regenerative brake hydraulic valve of the present invention is improved, described adjusting part comprises pipe regulating screw nut and stroke adjustment screw rod, pipe regulating screw nut is located at valve pocket one end away from import, and stroke adjustment screw rod is flexibly connected with main valve plug through pipe regulating screw nut; Described first elastic component is socketed on stroke adjustment screw rod, and its one end is against on pipe regulating screw nut, and the other end is against on main valve plug.By the pressure of the adjustable output of setting nut, can be controlled the stroke of main valve plug by pipe regulating screw nut and stroke adjustment screw rod, the adjustment of adjusting part can make regenerative brake hydraulic valve and master brake cylinder one work to reach desirable braking effect.
Another kind as regenerative brake hydraulic valve of the present invention is preferred, described center spool and stroke adjustment screw coaxial line, the shaft length of described center spool is greater than the length of passage, during braking, center spool moves to pipe regulating screw nut with main valve plug, when valve rod to center spool is against stroke adjustment screw rod, main valve plug continues towards pipe regulating screw nut motion, and stroke adjustment screw rod backs down central valve core, and snout cavity is communicated with center cavity.By the opening and closing of stroke adjustment screw rod control center spool, the movement of main valve plug and Stroke Control are coupled together.
Preferably a kind of as also having of regenerative brake hydraulic valve of the present invention, the side in described main valve plug mineralization pressure chamber is fixedly connected with for the first sealing member to the inwall of valve body and the First shoulder seal of main valve plug, and the side of described main valve plug formation center cavity is fixedly connected with the second sealing member for sealing the second shoulder of valve body and main valve plug.First sealing member and the second sealing member are followed together with main valve plug and are moved, and play better sealing function.
A technical matters to be solved by this invention provides a kind of braking effect better regenerative braking method.
The technical solution adopted for this technical matters is, provides a kind of regenerative braking method, and it adopts regenerative brake hydraulic valve of the present invention, and comprises the following steps:
1) this braking liquid pressure valve is connected on the pipeline of master brake cylinder;
2) during braking, entrance point pressure is large, and hydraulic oil enters pressure chamber, and promote main valve plug and move to pipe regulating screw nut, now center spool closing passage, center cavity is not communicated with snout cavity;
When main valve plug moves to certain position, stroke adjustment screw rod backs down central valve core, and center cavity is communicated with snout cavity, and outlet has output, the difference of pressure of entrance point and exit end gradually reduces and finally reaches balance, and main valve plug continues to pipe regulating screw nut motion and is finally against on pipe regulating screw nut;
3) stop braking, the pressure of entrance point reduces, and under the elastic force effect of the first elastic component, main valve plug resets to import campaign.
By this braking method, regenerative brake hydraulic valve can be made to be combined well with original master brake cylinder, reduce line pressure when the stroke of brake pedal is constant greatly and reach better braking effect and braking experience.
Preferably a kind of as regenerative braking method of the present invention, according to different delivery pressure demands, adjust the pipe regulating screw nut of this braking liquid pressure valve to export different pressure.By regulating pipe regulating screw nut, the power that primary spools is subject to when pipe regulating screw nut moves is different, thus exports different pressure.
Accompanying drawing explanation
It is a kind of specific embodiment of regenerative brake hydraulic valve of the present invention shown in Fig. 1.
Shown in Fig. 2 be adopt hydraulic line pressure and former hydraulic line pressure after regenerative brake hydraulic valve of the present invention contrast figure.
Adopt the graph of a relation between regenerative brake hydraulic valve back step angle of the present invention and brake torque shown in Fig. 3.
It is the graph of a relation between the pedal angle of prior art and brake torque shown in Fig. 4.
Shown in figure: 1, valve body, 1.1, import, 1.2, outlet, 1.3, valve pocket, 1.4, pressure chamber, 2, main valve plug, 2.1, center cavity, 2.2, snout cavity, 2.3, passage, 2.4, center spool, the 2.5, second elastic component, 2.6, intake vent, the 2.7, first shoulder, the 2.8, second shoulder, 3, adjusting part, 3.1, pipe regulating screw nut, 3.2, stroke adjustment screw rod, 4, the first elastic component, the 5, first sealing member, the 6, second sealing member.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Be illustrated in figure 1 a kind of specific embodiment of regenerative brake hydraulic valve of the present invention.In this embodiment, this regenerative brake hydraulic valve comprises:
Valve body 1, is provided with valve pocket 1.3 in valve body 1, valve body 1 is provided with import 1.1 and outlet 1.2, and described import 1.1 is communicated with valve pocket 1.3 respectively with outlet 1.2;
Main valve plug 2, is located in valve pocket 1.3, and during braking, main valve plug 2 moves thus is communicated with or closes import 1.1 and/or outlet 1.2 in valve pocket 1.3;
Comprise the adjusting part 3 of pipe regulating screw nut 3.1 and stroke adjustment screw rod 3.2, pipe regulating screw nut 3.1 and stroke adjustment screw rod 3.2 are located at valve pocket 1.3 one end away from import 1.1, and stroke adjustment screw rod 3.2 is flexibly connected with main valve plug 2 through pipe regulating screw nut 3.1; Pipe regulating screw nut 3.1 and stroke adjustment screw rod 3.2 1 work the movement travel of inhibitor valve core 2 in valve pocket 1.3, and stroke adjustment screw rod 3.2 is flexibly connected with auxiliary communication import 1.1 and outlet 1.2 with main valve plug 2;
First elastic component 4, described first elastic component 4 is socketed on stroke adjustment screw rod 3.2, and its one end is against on pipe regulating screw nut 4, and the other end is against on main valve plug 2.1, makes main valve plug 2 reset upon completion of the braking.
In one embodiment of the invention, described main valve plug 2 comprises the center cavity 2.1 being located at middle part and the snout cavity 2.2 be located near import 1.1 end, described center cavity 2.1 and the passage 2.3 be provided with between snout cavity 2.2 for being communicated with, be provided with the center spool 2.4 coordinating to open and close passage 2.3 with passage 2.3 in described snout cavity 2.2.
In one embodiment, be provided with the second elastic component 2.5 in described snout cavity 2.2, one end of described second elastic component 2.5 is against on center spool 2.4, and the other end is against snout cavity 2.2 inwall.When main valve plug 2 resets, at effect Xia Shi center spool 2.4 closing passage 2.3 of the elastic force of the second elastic component 2.5.
In one embodiment, described main valve plug 2 leaves pressure chamber 1.4 near between one end of import 1.1 and valve body 1, main valve plug 2 is located at several intake vents vertical with the axis direction of valve body 1 2.6 on the side face of one end of import 1.1, and pressure chamber 1.4 is communicated with through intake vent 2.6 with center cavity 2.1.
In one embodiment of the invention, described center spool 2.2 and stroke adjustment screw rod 3.2 coaxial line, the shaft length of described center spool 2.4 is greater than the length of passage 2.3, namely when passage 2.3 is closed, valve rod gives prominence to the end face that passage 2.3 is positioned at center cavity 2.1, during braking, center spool 2.4 moves to pipe regulating screw nut 3.1 with main valve plug 2, stop before pipe regulating screw nut 3.1 motion at main valve plug 2, when the valve rod of center spool 2.4 is first against stroke adjustment screw rod 3.2, when main valve plug 2 continues to move towards pipe regulating screw nut 3.1, stroke adjustment screw rod 3.2 backs down center spool 2.4, snout cavity 2.2 is communicated with center cavity 2.1.
In a preferred embodiment, the side in described main valve plug 2 mineralization pressure chamber 1.4 is fixedly connected with the first sealing member 5 for sealing the inwall of valve body 1 and the first shoulder 2.7 of main valve plug 2, and the side that described main valve plug 2 forms center cavity 2.1 is fixedly connected with the second sealing member 2.8 for sealing the second shoulder 2.8 of valve body 1 and main valve plug 2.
The invention also discloses a kind of regenerative braking method, it adopts regenerative brake hydraulic valve of the present invention, and comprises the following steps:
1) this braking liquid pressure valve is connected on the pipeline of master brake cylinder;
2) during braking, import 1.1 terminal pressure is large, and hydraulic oil enters pressure chamber 1.4, and promote main valve plug 2 and move to pipe regulating screw nut 3.1, now center spool 2.4 closing passage 2.3, center cavity 2.1 is not communicated with snout cavity 2.2;
When main valve plug 2 moves to certain position, stroke adjustment screw rod 3.2 backs down center spool 2.4, center cavity 2.1 is communicated with snout cavity 2.2, outlet 1.2 has output, import 1.1 end gradually reduces with the difference of pressure of outlet 1.2 ends and finally reaches balance, and main valve plug 2 continues move to pipe regulating screw nut 3.1 and be finally against on pipe regulating screw nut 3.1;
3) stop braking, the pressure of import 1.1 end reduces, and under the elastic force effect of the first elastic component 4, main valve plug 2 moves to import 1.1 and resets.
And according to different delivery pressure demands, adjust the pipe regulating screw nut 3.1 of this braking liquid pressure valve to export different pressure.
Hydraulic line pressure after adopting change corresponding after regenerative brake hydraulic valve of the present invention as shown in Figure 2 with former hydraulic line pressure contrast figure, as can be seen from the figure, Output pressure was not had before certain point (in figure, corresponding point are 2), now motor power compensated stage, be linear convergent rate after having crossed this point, but compared with former hydraulic tubing, pressure obviously reduces.That is, line pressure can be reduced when the stroke of brake pedal is constant greatly, reduce the braking force after superposing.
Adopt the graph of a relation between regenerative brake hydraulic valve back step angle of the present invention and brake torque as shown in Figure 3.And the graph of a relation between the pedal angle of Fig. 4 prior art and brake torque.Contrast Fig. 3 and Fig. 4 can find, in Fig. 4, corresponding point such as total brake torque former when pedal angle is 9 ° is about 250N.m, in Fig. 3, corresponding point such as brake torque total when pedal angle is 9 ° is about 220N.m, and total brake torque is from 0, with an original brake torque braked closer to.
Although invention has been described in conjunction with specific embodiments, but be appreciated that without departing from the scope of the invention, various improvement or replacement can be carried out to it.Especially, only otherwise there is structural conflict, the feature in each embodiment all can be combined with each other, and the compound type feature formed still is within the scope of the present invention.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (9)
1. a regenerative brake hydraulic valve, comprising:
Valve body (1), valve pocket (1.3) is provided with in valve body (1), valve body (1) is provided with import (1.1) and outlet (1.2), and described import (1.1) is communicated with valve pocket (1.3) respectively with outlet (1.2);
Main valve plug (2), is located in valve pocket (1.3), and during braking, main valve plug (2) moves thus is communicated with or closes import (1.1) and/or outlet (1.2) in valve pocket (1.3);
Adjusting part (3), be located at valve pocket (1.3) one end away from import, restriction spool (2) movement travel in valve pocket (1.3), and be connected with auxiliary communication import (1.1) and outlet (1.2) with main valve plug (2); With
First elastic component (4), its one end is against on main valve plug (2), and the other end is against on adjusting part (3), makes main valve plug (2) reset upon completion of the braking.
2. regenerative brake hydraulic valve according to claim 1, it is characterized in that, described main valve plug (2) comprises the center cavity (2.1) in the middle part of being located at and is located at the snout cavity (2.2) held near import (1.1), being provided with the passage (2.3) for being communicated with between described center cavity (2.1) with snout cavity (2.2), in described snout cavity (2.2), being provided with the center spool (2.4) coordinated with passage (2.3) to open and close passage (2.3).
3. regenerative brake hydraulic valve according to claim 2, it is characterized in that, the second elastic component (2.5) is provided with in described snout cavity (2.2), one end of described second elastic component (2.5) is against on center spool (2.4), and the other end is against snout cavity (2.2) inwall.
4. regenerative brake hydraulic valve according to claim 3, it is characterized in that, described main valve plug (2) leaves pressure chamber (1.4) near between one end and valve body (1) of import (1.1), and pressure chamber (1.4) is communicated with by the intake vent (2.6) vertical with the axis direction of valve body (1) with center cavity (2.1).
5. the regenerative brake hydraulic valve according to any one of Claims 1 to 4, it is characterized in that, described adjusting part (3) comprises pipe regulating screw nut (3.1) and stroke adjustment screw rod (3.2), pipe regulating screw nut (3.1) is located at valve pocket (1.3) one end away from import (1.1), and stroke adjustment screw rod (3.2) is flexibly connected with main valve plug (2) through pipe regulating screw nut (3.1); Described first elastic component (4) is socketed on stroke adjustment screw rod (3.2), and its one end is against on pipe regulating screw nut (4), and the other end is against on main valve plug (2.1).
6. regenerative brake hydraulic valve according to claim 5, it is characterized in that, described center spool (2.2) and stroke adjustment screw rod (3.2) coaxial line, the shaft length at described center spool (2.4) is greater than the length of passage (2.3), during braking, center spool (2.4) moves to pipe regulating screw nut (3.1) with main valve plug (2), when valve rod to center spool (2.4) is against stroke adjustment screw rod (3.2), main valve plug (2) continues to move towards pipe regulating screw nut (3.1), stroke adjustment screw rod (3.2) backs down center spool (2.4), snout cavity (2.2) is communicated with center cavity (2.1).
7. regenerative brake hydraulic valve according to claim 4, it is characterized in that, the side in described main valve plug (2) mineralization pressure chamber (1.4) is fixedly connected with the first sealing member (5) for sealing the inwall of valve body (1) and first shoulder (2.7) of main valve plug (2), and the side of described main valve plug (2) formation center cavity (2.1) is fixedly connected with the second sealing member (2.8) for sealing with second shoulder (2.8) of main valve plug (2) valve body (1).
8. a regenerative braking method, is characterized in that, adopts regenerative brake hydraulic valve according to claim 6, and comprises the following steps:
1) this braking liquid pressure valve is connected on the pipeline of master brake cylinder;
2) during braking, import (1.1) terminal pressure is large, hydraulic oil enters pressure chamber (1.4), promote main valve plug (2) to move to pipe regulating screw nut (3.1), now center spool (2.4) closing passage (2.3), center cavity (2.1) is not communicated with snout cavity (2.2);
When main valve plug (2) moves to certain position, stroke adjustment screw rod (3.2) backs down center spool (2.4), center cavity (2.1) is communicated with snout cavity (2.2), outlet (1.2) has output, the difference of pressure that import (1.1) end and outlet (1.2) are held gradually reduces and finally reaches balance, and main valve plug (2) continues to pipe regulating screw nut (3.1) motion and is finally against on pipe regulating screw nut (3.1);
3) stop braking, the pressure that import (1.1) is held reduces, and under the elastic force effect of the first elastic component (4), main valve plug (2) resets to import (1.1) motion.
9. regenerative braking method according to claim 8, is characterized in that, according to different delivery pressure demands, adjusts the pipe regulating screw nut (3.1) of this braking liquid pressure valve to export different pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359102.2A CN105270372B (en) | 2014-07-25 | 2014-07-25 | Regenerative braking hydraulic valve and its braking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359102.2A CN105270372B (en) | 2014-07-25 | 2014-07-25 | Regenerative braking hydraulic valve and its braking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105270372A true CN105270372A (en) | 2016-01-27 |
| CN105270372B CN105270372B (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410359102.2A Active CN105270372B (en) | 2014-07-25 | 2014-07-25 | Regenerative braking hydraulic valve and its braking method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3290882A (en) * | 1963-10-25 | 1966-12-13 | Teves Kg Alfred | Brake-force control valve and system incorporating same |
| GB2137320A (en) * | 1983-03-31 | 1984-10-03 | Graubremse Gmbh | Pressure-limiting valve |
| JPH08253125A (en) * | 1995-03-20 | 1996-10-01 | Daikin Ind Ltd | Direct acting pressure reducing valve |
| CN1686741A (en) * | 2005-04-26 | 2005-10-26 | 温州市东启汽车零部件制造有限公司 | Brake main cylinder having regulatable ratio valve |
| CN1803503A (en) * | 2006-01-24 | 2006-07-19 | 重庆特锐格科技有限公司 | Hydraulic pressure adjusting device |
-
2014
- 2014-07-25 CN CN201410359102.2A patent/CN105270372B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3290882A (en) * | 1963-10-25 | 1966-12-13 | Teves Kg Alfred | Brake-force control valve and system incorporating same |
| GB2137320A (en) * | 1983-03-31 | 1984-10-03 | Graubremse Gmbh | Pressure-limiting valve |
| JPH08253125A (en) * | 1995-03-20 | 1996-10-01 | Daikin Ind Ltd | Direct acting pressure reducing valve |
| CN1686741A (en) * | 2005-04-26 | 2005-10-26 | 温州市东启汽车零部件制造有限公司 | Brake main cylinder having regulatable ratio valve |
| CN1803503A (en) * | 2006-01-24 | 2006-07-19 | 重庆特锐格科技有限公司 | Hydraulic pressure adjusting device |
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| CN105270372B (en) | 2018-09-04 |
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Address after: 450016 Zhengzhou economic and Technological Development Zone, Henan Road, No. 1689 Applicant after: Hippocampus Motor Co., Ltd. Applicant after: Hippocampal New Energy Automobile Co., Ltd. Address before: 450016 Zhengzhou economic and Technological Development Zone, Henan Road, No. 1689 Applicant before: Hippocampus Motor Co., Ltd. Applicant before: Haima Business Automobile Co., Ltd. |
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Effective date of registration: 20220107 Address after: 450000 No. 1689, hanghai East Road, Zhengzhou Economic and Technological Development Zone, Zhengzhou, Henan Province Patentee after: HAIMA MOTOR Corp. Patentee after: HAIMA NEW ENERGY VEHICLE Co.,Ltd. Patentee after: Hainan Haima Automobile Co.,Ltd. Address before: 450016 Haihai East Road 1689, Zhengzhou Economic and Technological Development Zone, Henan Province Patentee before: HAIMA MOTOR Corp. Patentee before: HAIMA NEW ENERGY VEHICLE Co.,Ltd. |
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