CN2368762Y - Three channel pressure regulator for hydraulic brake antilocking system of vehicle - Google Patents
Three channel pressure regulator for hydraulic brake antilocking system of vehicle Download PDFInfo
- Publication number
- CN2368762Y CN2368762Y CN 99211302 CN99211302U CN2368762Y CN 2368762 Y CN2368762 Y CN 2368762Y CN 99211302 CN99211302 CN 99211302 CN 99211302 U CN99211302 U CN 99211302U CN 2368762 Y CN2368762 Y CN 2368762Y
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- Prior art keywords
- oil
- valve body
- feed
- valve
- pump
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- Expired - Fee Related
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- 238000004146 energy storage Methods 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 11
- 239000012530 fluid Substances 0.000 description 8
- 230000006837 decompression Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229920001342 Bakelite® Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000004637 bakelite Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
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- Regulating Braking Force (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a three-channel pressure regulator for a hydraulic brake anti-locking system of a vehicle. The utility model comprises normally open electromagnetic valves, normally closed electromagnetic valves, a main valve body, plunger pumps, high-pressure accumulators, low-pressure accumulators, an oil inlet valve, a position switch of a differential pressure motor, etc. The normally open electromagnetic valves and the normally closed electromagnetic valves are two-position, two-channel and are controlled by current. The main valve body is provided with three normally open electromagnetic valves and three normally closed electromagnetic valves, two sets of the high-pressure accumulators, two sets of the low-pressure accumulators, and a set of the plunger pumps. An oil inlet duct is communicated with the normally open electromagnetic valves, the high-pressure accumulators, and the oil pressing cavities of the plunger pumps. An oil outlet duct is communicated with the normally open electromagnetic valves, the normally closed electromagnetic valves, the low-pressure accumulators, and the oil absorbing cavities of the plunger pumps. Each plunger pump comprises a pump core, a pump body, a pump base, and a motor. The oil inlet valve body is provided with the position switch of a differential pressure motor.
Description
The utility model relates to hydraulic vehicle brake system, the triple channel pressure regulator that a kind of specifically skid control system for hygraulic brake uses.
Vehicle is zero with the technical situation of skid control system for hygraulic brake triple channel pressure regulator.
The purpose of this utility model is the triple channel pressure regulator that provides a kind of skid control system for hygraulic brake to use for vehicle.
The purpose of this utility model is achieved in that
A kind of hydraulic vehicle brake antiblock device triple channel pressure regulator comprises that oil-feed electromagnetic valve open in usual, normally closed go out solenoid, main valve body, plunger pump, high-voltage energy storage device, low pressure accumulator, oil-feed valve body, differential motor range switch and by pass valve etc.It is characterized in that:
Normally open type magnetic valve is opened when no power, is closed when energising, and 2/2-way is for using to brake wheel cylinder fuel feeding and pressurize.Normally closed solenoid valve is closed when no power, when energising, opens, and 2/2-way, emptying and pressurize are used when regulating for pressure of wheel cylinder.Three groups of electromagnetic valves are installed on the main valve body, every group by one open in usual and normally closed solenoid valve forms, two cover high-voltage energy storage devices, two overlap the low pressure accumulators, one overlaps plunger pump, three oil outlets is arranged, two fuel feed holes.Main valve body is according to voltage-regulation principle, have oil duct, in these oil ducts, oil inlet passage communicates with normally open type magnetic valve, high-voltage energy storage device and plunger pump pumping cavity, and oil discharge passage communicates with normally open type magnetic valve, normally closed solenoid valve, low pressure accumulator, plunger pump oil sucting cavity.Main valve body can be installed on the appropriate location of vehicle with bolt.Plunger pump mainly is made up of pump core, the pump housing, pump seat, steel ball, retracing spring, plug screw and motor etc.High-voltage energy storage device is made up of housing and pressure regulation rubber, the storage high pressure oil.The low pressure accumulator is made up of piston and compression spring, the storage low pressure oil.The oil circuit of high-voltage energy storage device and low pressure accumulator as described above.Comprise fuel feed hole, by pass valve and differential motor range switch on the oil-feed valve body, differential motor range switch is controlled motor rotation by pressure reduction.
Compared with prior art, the good effect that the utility model had is:
The utility model is applied in the skid control system for hygraulic brake, compare with the motor vehicle braking system of routine, directional balance in the time of can improving automobile brake effectively, especially on the wet and slippery road surface or the both sides adhesion value different to open circuit surface on glancing impact, this effect is more obvious.Can shorten stopping distance in addition.Raising traffic safety that like this can be bigger.It is the comparatively complete pressure regulator of a kind of performance.
The advantage that the utility model had is:
(1) is applied on the lorry, can implement independent control (two trailing wheels are respectively with a passage) to two trailing wheels, two front-wheels are implemented selection high (the shared passage of two front-wheels), can keep directional balance, manipulative capability and the shortening stopping distance of glancing impact so effectively.
(2) be applied on the middle and high shelves car, can implement independent control (two front-wheels are respectively with a passage) to two front-wheels, two trailing wheels are implemented selection-low (the shared passage of two trailing wheels), can keep directional balance, manipulative capability and the shortening stopping distance of glancing impact so effectively.
(3) split with master brake cylinder, servo-unit, can directly be serially connected in the regulated brake oil circuit, less to former brake system change, the vehicle of being convenient to the conventional brake system is realized the repacking of anti-blocking brake system.
(4) for newly-designed vehicle, find suitable position easily, install anti-blocking brake system additional.
(5) machine operation is by the pressure reduction control of three passages, and simple in structure, volume is little, dependable performance.
(6) plunger pump that application structure is simple, volume is little is realized the rapid supercharging and the explosive decompression of brake wheel cylinder easily, has improved the performance of anti-blocking brake system.
The shared fuel feed hole of wheel, a high-voltage energy storage device and a by pass valve of (7) two independent controls, simple in structure, performance also is guaranteed.
Now be illustrated in conjunction with the accompanying drawings with preferred embodiment:
Fig. 1 is a front view of the present utility model, shows three groups of oil-feed electromagnetic valves among the figure and goes out solenoid, the relative position of two fuel feed holes 6 and 70, two low pressure accumulators 62 of 1,2 and 3, two high-voltage energy storage devices of 8, three oil outlets.Shown the installation site 5 of oil-feed valve body on main valve body etc. in addition.
Fig. 2 is a birds-eye view of the present utility model, has shown the relative position of oil-feed valve body 17 and main valve body 4 among the figure, oil-feed electromagnetic valve and the relative position that goes out solenoid.
Fig. 3 is the A-A section-drawing of Fig. 2, the figure illustrates inlet valve, oil-feed electromagnetic valve, goes out solenoid interior oil road deployment scenarios.
Fig. 4 is the B-B section-drawing of Fig. 2, the figure illustrates three the oil duct situations that go out solenoid, low pressure accumulator 62, the inner structure of plunger pump and oil duct situations.
Fig. 5 is the C-C section-drawing of Fig. 2, the figure illustrates the oil duct situation of three oil-feed electromagnetic valves and high-voltage energy storage device 70.
Fig. 6 is the D-D section-drawing of Fig. 2, the figure illustrates concrete structure and their in-to-in oil duct situations of differential travel switch and by pass valve.
Accompanying drawing number:
1 left back (preceding) oil outlet 2 right back (preceding) oil outlet
(back) oil outlet 4 main valve bodies before 3 liang
(back) fuel feed hole before 6 liang of the 5 inlet valve mounting holes
7 pressure regulator assembly installation site 8 left back (preceding) right back (preceding) fuel feed holes
9 electromagnetic valve coil housing mounting hole 10 left back (preceding) oil-feed electromagnetic valve body assembly openings
The fuel-displaced electromagnetic valve body assembly opening of the fuel-displaced electromagnetic valve body assembly openings 12 of 11 left back (preceding) right back (preceding)
(back) fuel-displaced electromagnetic valve body assembly opening before 14 liang of 13 right back (preceding) oil-feed electromagnetic valve body assembly openings
(back) oil-feed electromagnetic valve body assembly opening 16 oil-feed valve bodies two back (preceding) fuel feed holes before 15 liang
17 oil-feed valve bodies, 18 pressure difference signal lead-out terminals
(back) fuel feed hole 20 fuel-displaced electromagnetic valve bodies before the 19 oil-feed valve bodies two
21 O type circles, 22 fuel-displaced solenoid valve seats
23 go out solenoid bar 24 O type circles
Carriage in 25 snap rings, the 26 fuel-displaced electromagnetic valve coils
27 fuel-displaced electromagnetic valve coil external supports 28 go out the solenoid magnet coil
29 retracing springs, 30 O type circles
31 oil-feed solenoid valve seats, 32 carriages
33 O type circles, 34 oil-feed electromagnetic valve bodies
Carriage in 35 retracing springs, the 36 oil-feed electromagnetic valve coils
37 magnet coils, 38 oil-feed electromagnetic valve coil external supports
39 oil-feed electromagnetism valve rods, 40 O type circles
41 oil outlet bodies, 42 inlet nozzles
43 O type circles, 44 oil outlet linings
45 oil-feed valve bodies, 46 right overflow spools
47 retracing springs, 48 O type circles
49 right plunger pump core 50 O type circles
51 right plunges pump body 52 steel balls
53 steel balls, 54 outer retracing springs
55 right plunger valve seat 56 right plunger valve plug screws
57 retracing springs, 58 O type circles
Retracing spring in the 59 O type circles 60
61 outer retracing spring 62 low pressure accumulator pistons
63 motor cams, 64 right plunger pump cores
Retracing spring in the 65 outer retracing springs 66
67 left plunges pump body 68 retracing springs
70 high-voltage energy storage device shells are blocked up in 69 holes
71 pressure regulation rubber, 72 low pressure accumulator pistons
73 left by pass valve plug screw 74 left by pass valve pads
75 rubber pads, 76 left overflow spools
77 compression springs, 78 bakelite sheets
The unidirectional oil sealing of 79 left overflow valve rod 80 right by pass valves
81 retracing springs, 82 right by pass valve plug screws
83 O type circles, 84 right overflow spools
85 O type circles, 86 pressure-difference valve cores
87 O type circles, 88 sliding sleeves
89 O type circles, 90 pressure-difference valve core bakelites
91 rivets
Architectural feature of the present utility model and principle of work are:
After the 1 braking beginning, enter the two ends of pressure-difference valve core 86 through the oil inlet 16 and 19 of oil-feed valve body 17 from the braking liquid of master brake cylinder, by the laggard oil inlet passage of going into main valve body 4 of by pass valve 76 and 84, inlet nozzle 42, flow through oil-feed electromagnetic valve open in usual, oil outlet enters brake wheel cylinder, vehicle begins braking, and the braking liquid that enters main valve body 4 enters high-voltage energy storage device 70 simultaneously.When brake wheel cylinder needs pressurize, make the oil-feed solenoid closure from the signal of electronic control package, at this moment, the fluid of brake wheel cylinder can not advance and can not go out, and realizes pressurize.When brake wheel cylinder need reduce pressure, it was still closed often to drive solenoid into, and normally closedly went out solenoid and open, and brake wheel cylinder is realized decompression to low pressure accumulator 62 drainings.
2 normally open type magnetic valves, 2/2-way is opened during no power, and it can be the space of the pressure oil of coming between carriage 32, valve rod 39, valve seat 31 from inlet nozzle 42, be incorporated in the brake wheel cylinder by oil outlet body 41, oil outlet lining 44, realized function to the brake wheel cylinder fuel feeding.During energising, oil-feed electromagnetic valve coil 37 produces electromagnetic force, upwards is drawn into electromagnetic oil valve rod 39, after electromagnetism valve rod 39 overcomes the spring force of retracing spring 35, closed oil inlet passage has cut off the oil circuit between inlet nozzle 42 and the oil outlet body 41 like this, and brake wheel cylinder can not oil-feed.If be in closure state the normally closed solenoid valve no power this moment, brake wheel cylinder can not oil-feed can not be fuel-displaced, realized the function of brake wheel cylinder pressurize, if the normally closed solenoid valve energising is in open mode, brake wheel cylinder can not oil-feed but can be fuel-displaced, has realized the function of brake wheel cylinder decompression.
The normally closed solenoid valve 2/2-way, closure when no power goes out solenoid bar 23 and is pressed on the valve seat 22, has cut off oil circuit, and can guarantee the oil-feed function and the pressure holding function of oil-feed electromagnetic valve open in usual this moment.In when energising, fuel-displaced electromagnetic valve coil 28 produces electromagnetic forcees, upwards attracts solenoid bar 23, and electromagnetism valve rod 23 moves on overcoming behind the spring force of retracing spring 29, has opened oil discharge passage, has opened solenoid.The annular groove of the pressure oil of brake wheel cylinder between oil outlet body 41 and oil outlet lining 44 and the oil-feed electromagnetic valve solenoid of flowing through out arrives in the annular groove of plunges pump body 51 and 67 oil sucting cavities, enters low pressure accumulator 62 then, has realized the functional oil that unloads of brake wheel cylinder.
3 low pressure accumulators are made up of piston and compression spring, by oil pressure and spring equilibrium of forces storage low pressure oil.The oil sucting cavity and the oil road of its oil circuit and plunger pump communicate.
4 high-voltage energy storage devices are made up of housing 70 and pressure regulation rubber 71, by the distortion storage high pressure oil of rubber 71.The oil circuit of high-voltage energy storage device and the pumping cavity of plunger pump and oil input channel communicate.
5 main valve bodies 4 have pressure regulator installation site 7, are installed on the appropriate location of vehicle with three bolts.
6 O type circles 21 and 24 seal out solenoid, O type circle 30 and 33 is sealed into solenoid, O type circle 40 sealing oil outlet bodies 41, O type circle 43 is sealed into oil nozzle 42, O type circle 48 and the left and right plunges pump body 51 of 59 sealings, the left and right plunger pump core 49 of O type circle 50 sealings, the left and right plunger pump seat 55 of O type circle 58 sealings, O type circle 83 sealing left and right by pass valve plug screws 73 and 82, O type circle 85,87 and 89 is the sealing member on the differential motor range switch spool 86.
7 holes stifled 69 are stifled for auxiliary hole.
8 oil-feed electromagnetic valve bodies 34 and fuel-displaced electromagnetic valve body 20 usefulness snap rings 25 are fixed on the main valve body 4.
9 oil-feed electromagnetic valve coils 37, fuel-displaced electromagnetic valve coil 28 install with interior carriage 36 and 26, external support 39 and 27 respectively, they and electromagnetic valve body 34 and 20 fens body structures, electromagnetic valve coil is screwed on main valve body 4 after covering on electromagnetic valve body 34 and 20.
10 plunger pumps are made up of pump core 49 and 64, the pump housing 51 and 67, pump seat 55, steel ball 52 and 53, interior retracing spring 60, outer retracing spring 61, plug screw 56 and motor cam 63, and simple in structure, volume is little, reliable operation.Its principle of work is: when motor eccentric cam 63 is pressed into the pump housing 51 to plunger pump core 49, steel ball 52 is the oil duct closure of pump core 49 on the pump housing, the oil sucting cavity volume reduces, fluid is pressed into pumping cavity, to the high-voltage energy storage device fuel feeding, the pump housing 51 pushes away pump seat 55 to the right by steel ball 53 simultaneously, and retracing spring 57 is further compressed.When pump core 49 stretches out from the pump housing 51, the pump housing 51 oil sucting cavity volumes increase, pressure reduces, because the spring stiffness of outer retracing spring 61 is big, the spring stiffness of interior retracing spring 60 is little, cause pump core 49 faster, so oil sucting cavity oil suction from the low pressure accumulator gap appears, in the oilhole of steel ball 52 and pump core 51 than steel ball 52 reset speeds.Steel ball 53 has been blocked the oil discharge passage of the pump housing 51 under the recovery of elasticity of the retracing spring 57 of pump seat 55 simultaneously, and the fluid of high-voltage energy storage device and plunger pump pumping cavity thereof can not reflux.Like this along with the rotation of motor, plunger pump core crank motion is constantly pressed to high-voltage energy storage device 70 to 62 fluid in the low pressure accumulator.
Comprise fuel feed hole 16 and 19, by pass valve and differential motor range switch etc. on the 11 oil-feed valve bodies 17.Differential motor range switch is controlled motor rotation by pressure reduction, and its two ends communicate with front-wheel, trailing wheel fuel feed hole 16 and 19 respectively.When pressure at two ends equates, the travel switch contact is positioned at the V-slot of sliding valve core 86, when pressure at two ends is unequal, and pressure reduction is during greater than certain value, spool 86 is to the low side shifting of pressure, this makes the higher lateral pressure of pressure reduce on the one hand, the low lateral pressure of pressure increases, the travel switch contact is positioned at outside the V-slot of sliding valve core 86, produces the pressure reduction status signal, rotate through pressure difference signal lead-out terminal 18 output drive motor, the higher lateral pressure of pressure is reduced rapidly, the low lateral pressure of pressure increases rapidly, has accelerated the oil-feed and the draining speed of brake wheel cylinder, has improved the performance of anti-blocking brake system.
12 right by pass valves are made up of the unidirectional oil sealing 80 of right by pass valve, retracing spring 81, right by pass valve plug screw 82, O type circle 83 and right overflow spool 84 etc.When the wheel cylinder oil-feed, right overflow spool 84 right-hand members are bigger than the pressure of left end, the space occurs between the convex shoulder of spool 84 and the unidirectional oil sealing 80, and braking fluid can enter the oil inlet of main valve body by right overflow spool 84, enter brake wheel cylinder again through the oil-feed electromagnetic valve then, realize braking.When oil-feed electromagnetic valve sudden closure, main valve body oil input channel oil pressure increases suddenly, make right overflow spool 84 move to left, spool 84 left end convex shoulders have withstood unidirectional oil sealing 80, fluid in the main valve body can't flow out, make the fluid in the main valve body oil input channel keep higher pressure,, be convenient to the rapid supercharging of wheel cylinder in case the oil-feed electromagnetic valve is opened.When braking was removed, spool 84 left end pressure ratio right-hand members were much higher, and the left end oil pressure promotes to move to right behind the application force that spool 84 overcomes retracing spring 81, and brake wheel cylinder fluid can flow back to master brake cylinder through oil inlet 19 rapidly.Principle of work and the right of left side by pass valve are similar, difference is: the shared oil inlet of two brake wheel cylinders, when a certain passage oil-feed solenoid closure, the oil input channel oil pressure can not increase suddenly, its reason is can be to another passage oil-feed, but i.e. this two passages internal regulation oil pressure, thereby left by pass valve is not used unidirectional oil sealing.
Claims (2)
1 one kinds of hydraulic vehicle brake antiblock device triple channel pressure regulators, comprise that oil-feed electromagnetic valve open in usual, normally closed go out solenoid, main valve body, plunger pump, high-voltage energy storage device, low pressure accumulator, oil-feed valve body, differential motor range switch and by pass valve etc., is characterized in that:
Open during the normally open type magnetic valve no power, closure during energising, 2/2-way, closure during the normally closed solenoid valve no power, open during energising, 2/2-way, three groups of electromagnetic valves are installed on the main valve body, form by a normally open type magnetic valve and a normally closed solenoid valve for every group, two cover high-voltage energy storage devices, two cover low pressure accumulators, one cover plunger pump, three oil outlets, two fuel feed holes, in the main valve body oil duct, oil inlet passage and normally open type magnetic valve, high-voltage energy storage device and plunger pump pumping cavity communicate, oil discharge passage and normally open type magnetic valve, normally closed solenoid valve, the low pressure accumulator, the plunger pump oil sucting cavity communicates, and main valve body can be installed on the appropriate location of vehicle with bolt; Plunger pump mainly is made up of pump core, the pump housing, pump seat, steel ball, retracing spring, plug screw and motor; High-voltage energy storage device is made up of housing and pressure regulation rubber, and the low pressure accumulator is made up of piston and compression spring, and the oil circuit of high-voltage energy storage device and low pressure accumulator as described above; Comprise fuel feed hole, by pass valve and differential motor range switch etc. on the oil-feed valve body, differential motor range switch ends communicates with front-wheel, trailing wheel fuel feed hole respectively; The oil-feed valve body links to each other with the fuel feed hole of main valve body by inlet nozzle, and is screwed on main valve body; Oil-feed electromagnetic valve coil, fuel-displaced electromagnetic valve coil and electromagnetic valve body are split-type structural, and electromagnetic valve coil covers on the electromagnetic valve body, is screwed on main valve body.
2 beat straight hole as each oil duct that patent requires 1 described oil-feed valve body and main valve body, then auxiliary hole is blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211302 CN2368762Y (en) | 1999-05-27 | 1999-05-27 | Three channel pressure regulator for hydraulic brake antilocking system of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211302 CN2368762Y (en) | 1999-05-27 | 1999-05-27 | Three channel pressure regulator for hydraulic brake antilocking system of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2368762Y true CN2368762Y (en) | 2000-03-15 |
Family
ID=34004282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211302 Expired - Fee Related CN2368762Y (en) | 1999-05-27 | 1999-05-27 | Three channel pressure regulator for hydraulic brake antilocking system of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2368762Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360354C (en) * | 2005-09-16 | 2008-01-09 | 东南大学 | Integrated hydraulic control unit of electronic stabilized programm of anti-locking system for car |
| CN107461537A (en) * | 2017-07-27 | 2017-12-12 | 绍兴上虞尚益德机电有限公司 | Safe and reliable pressure-reducing regulator for compressed natural gas used in vehicle |
| CN107933538A (en) * | 2016-10-12 | 2018-04-20 | 大陆泰密克汽车系统（上海）有限公司 | Pressure adjusting module and ABS three channel system |
| CN115234466A (en) * | 2022-06-10 | 2022-10-25 | 宁波赛福汽车制动有限公司 | ABS hydraulic control module adopting plunger type electromagnetic pump |
| CN107461537B (en) * | 2017-07-27 | 2024-05-31 | 南京槐燕归电子科技有限公司 | Safe and reliable compressed natural gas pressure reducing regulator for automobile |
-
1999
- 1999-05-27 CN CN 99211302 patent/CN2368762Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360354C (en) * | 2005-09-16 | 2008-01-09 | 东南大学 | Integrated hydraulic control unit of electronic stabilized programm of anti-locking system for car |
| CN107933538A (en) * | 2016-10-12 | 2018-04-20 | 大陆泰密克汽车系统（上海）有限公司 | Pressure adjusting module and ABS three channel system |
| CN107461537A (en) * | 2017-07-27 | 2017-12-12 | 绍兴上虞尚益德机电有限公司 | Safe and reliable pressure-reducing regulator for compressed natural gas used in vehicle |
| CN107461537B (en) * | 2017-07-27 | 2024-05-31 | 南京槐燕归电子科技有限公司 | Safe and reliable compressed natural gas pressure reducing regulator for automobile |
| CN115234466A (en) * | 2022-06-10 | 2022-10-25 | 宁波赛福汽车制动有限公司 | ABS hydraulic control module adopting plunger type electromagnetic pump |
| CN115234466B (en) * | 2022-06-10 | 2023-10-27 | 宁波赛福汽车制动有限公司 | ABS hydraulic control module adopting plunger electromagnetic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |