CN115199674A - Hydraulic retarder controlled by oil pump - Google Patents
Hydraulic retarder controlled by oil pump Download PDFInfo
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- CN115199674A CN115199674A CN202210621009.9A CN202210621009A CN115199674A CN 115199674 A CN115199674 A CN 115199674A CN 202210621009 A CN202210621009 A CN 202210621009A CN 115199674 A CN115199674 A CN 115199674A
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- oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/023—Pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a hydraulic retarder controlled by an oil pump, which comprises a control unit and the hydraulic retarder, wherein the control unit comprises a controller and an electromagnetic valve, the electromagnetic valve comprises an oil inlet, a first oil outlet and a second oil outlet, and the controller controls the electromagnetic valve to switch the communication between the oil inlet and the first oil outlet as well as the communication between the oil inlet and the second oil outlet; the first oil pump of the hydrodynamic retarder is connected with a driving shaft, the driving shaft drives the first oil pump to operate so as to pump oil into a first oil inlet pipeline from an oil tank, the first oil inlet pipeline is connected with an oil inlet of an electromagnetic valve, a first oil outlet of the electromagnetic valve is communicated with an oil working cavity, and a second oil outlet of the electromagnetic valve is communicated with the oil tank through an oil discharge pipeline; under the working state of the hydraulic retarder, the oil inlet is communicated with the first oil outlet, so that oil enters the oil working cavity, and under the non-working state of the hydraulic retarder, the oil inlet is communicated with the second oil outlet, so that the oil returns to the oil tank through the oil unloading pipeline, and therefore better efficiency of the hydraulic retarder can be achieved.
Description
Technical Field
The invention relates to the technical field of vehicle brake control, in particular to a hydraulic retarder controlled by an oil pump.
Background
At present, most of service brakes commonly used on vehicles are disc brakes or drum brakes, and all the service brakes belong to friction plate type braking devices. When the vehicle is frequently or long-time used under the working conditions of long downhill road sections, urban traffic, low-speed driving under load and the like, the brake converts a large amount of kinetic energy into heat energy, so that the temperature of a friction element is overhigh, the friction coefficient is reduced, the braking efficiency is reduced, and the heat fading phenomenon of the braking performance is generated. The heat fading phenomenon causes the braking efficiency of the vehicle to be seriously reduced, and a major accident is easily caused.
The hydrodynamic retarder is a key technology for solving the problem of brake heat fading, wherein the hydrodynamic retarder is important for stability and accuracy of input of working oil, and performance of the hydrodynamic retarder in a braking process is influenced. The control of the braking torque of the hydrodynamic retarder mainly depends on air pressure to push oil to enter the working cavities of the stator and the rotor, and braking resistance is formed by stirring the oil, so that the oil is required to be quickly and accurately controlled to enter the working cavities of the stator and the rotor according to the running condition of a vehicle. In present common hydraulic retarber, utilize compressed air to pour into the mode that promotes fluid in the oil tank and enter stator rotor working chamber into, there is the structure complicacy, the slow problem of control response, and output accuracy is relatively poor, consequently, the mode of replacing atmospheric pressure control fluid with the mode of motor control oil pump oil has been proposed gradually, however such a doing things needs in addition to the motor power supply, and the installation motor can make the whole volume increase of hydraulic retarber, can cause very big inconvenience to installation hydraulic retarber, and the motor oil pump also can have the problem of generating heat or trouble under the condition of long-time work, relatively poor on whole efficiency stability.
Disclosure of Invention
Therefore, the main object of the present invention is to provide a hydrodynamic retarder controlled by an oil pump, wherein the driving shaft is coupled to the oil pump, and no additional motor is required, and the hydrodynamic retarder can precisely control the amount of oil entering the working cavities of the stator and the rotor in combination with a controller and an electromagnetic valve, and can effectively reduce the volume of the hydrodynamic retarder and improve the working stability and performance of the hydrodynamic retarder.
The technical scheme includes that the hydraulic retarder controlled by the oil pump comprises a control unit and the hydraulic retarder, wherein the control unit comprises a controller and an electromagnetic valve, the electromagnetic valve comprises an oil inlet, a first oil outlet and a second oil outlet, the controller is electrically connected with the electromagnetic valve, and the electromagnetic valve is controlled to switch the communication of the oil inlet with the first oil outlet and the second oil outlet; the hydraulic retarder comprises a driving shaft, a first oil pump, an oil tank and an oil working chamber formed by a stator and a rotor, wherein the first oil pump is connected with the driving shaft and drives the first oil pump to operate through the driving shaft; when the hydraulic retarder is in a working state, the oil inlet is communicated with the first oil outlet, so that oil enters the oil working cavity, and when the hydraulic retarder is in a non-working state, the oil inlet is communicated with the second oil outlet, so that the oil returns to the oil tank through the oil discharge pipeline.
Furthermore, the hydrodynamic retarder also comprises a second oil pump, the second oil pump is connected with the driving shaft and drives the second oil pump to operate through the driving shaft, the second oil pump is communicated with the oil tank through a lubricating oil path, and oil is pumped out of the oil tank through the lubricating oil path.
Furthermore, the oil tank is provided with an air inlet and outlet valve which is used for adjusting the air pressure state in the oil tank.
Furthermore, the hydrodynamic retarder also comprises a heat exchanger, the oil working cavity is communicated with the heat exchanger through a first oil return pipeline, the first oil return pipeline is provided with a throttle valve and a one-way valve, and the one-way valve controls the flowing direction of oil to flow from the oil working cavity to the heat exchanger.
Furthermore, the oil cavity on the back of the rotor is also connected with a second oil return pipeline, and the second oil return pipeline is communicated with the heat exchanger after being converged with the first oil return pipeline.
Furthermore, the heat exchanger is connected with a cooling water inlet pipeline and a cooling water outlet pipeline, the cooling water outlet pipeline is provided with a water temperature sensor, and the water temperature sensor is electrically connected with the controller.
Furthermore, the first oil inlet pipeline is connected with an oil pressure sensor for sensing oil pressure of oil in the first oil inlet pipeline, and the oil pressure sensor is electrically connected with the controller.
Furthermore, the second oil return pipeline is connected with an oil temperature sensor for sensing the oil temperature of the oil in the second oil return pipe, and the oil temperature sensor is electrically connected with the controller.
Furthermore, the first oil inlet pipeline is also connected with a safety pipeline, the safety pipeline is communicated with the oil tank through an oil unloading pipeline, a safety valve is arranged on the safety pipeline, and the safety valve controls oil to flow to the oil unloading pipeline from the first oil inlet pipeline.
Furthermore, a cold oil outlet pipeline of the heat exchanger is communicated with the first oil inlet pipeline.
Therefore, the beneficial effects of the invention are as follows:
1. through the first oil pump of drive shaft direct drive, with the first oil pipe way of advancing of fluid pump income in the oil tank, combine controller control solenoid valve, but the oil mass of accurate control entering fluid working chamber.
2. The hydraulic retarder is simple in structure, convenient to integrate and lighten, and convenient to mount a follow-up hydraulic retarder and a vehicle.
3. Through the oil way design, under the condition that the hydraulic retarder does not work, oil still flows in the first oil inlet pipeline, and when the hydraulic retarder needs to work, the oil can be quickly led into the oil working cavity, so that the effect performance of the hydraulic retarder is improved.
Drawings
Fig. 1 is a schematic diagram of a hydraulic retarder controlled by an oil pump according to the invention.
Reference numerals
11. Controller
12. Electromagnetic valve
12-1 oil inlet
12-2 first oil outlet
12-3 second oil outlet
21. Drive shaft
22. First oil pump
23. Second oil pump
24. Oil tank
24-1 air inlet and outlet valve
25. Stator
26. Rotor
27. Oil working chamber
27-1 oil-gas separation device
27-2 float valve
28. First oil inlet pipeline
28-1 oil pressure sensor
29. Oil discharge pipeline
30. Safety pipeline
30-1 safety valve
31. Heat exchanger
32. First oil return pipeline
32-1 throttle valve
32-2 one-way valve
33. Second oil return pipeline
33-1 oil temperature sensor
34. Cold oil outlet pipeline
35. Cooling water outlet pipeline
35-1 water temperature sensor
36. Cooling water inlet pipeline
37. Lubricating oil path
Detailed Description
The specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. The described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive and include the singular, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising a component of ' 8230 ' \8230; ' does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
Wherein in the description of the embodiments of the present application, "/" indicates an inclusive meaning, for example, a/B may indicate a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1, a schematic diagram of a hydraulic retarder controlled by an oil pump according to the present invention is shown. The hydraulic retarder controlled by the oil pump comprises a control unit and a hydraulic retarder, wherein the control unit comprises a controller 11 and an electromagnetic valve 12, the electromagnetic valve 12 comprises an oil inlet 12-1, a first oil outlet 12-2 and a second oil outlet 12-3, the controller 11 is electrically connected with the electromagnetic valve 12, the electromagnetic valve 12 can be controlled by the controller 11 to switch the oil inlet 12-1 to be communicated with the first oil outlet 12-2 or the second oil outlet 12-3, meanwhile, the controller 11 can also control the oil inlet 12-1 of the electromagnetic valve 12, the controller 11 is an electronic module assembly (ECU) in the embodiment, but a Programmable Logic Controller (PLC) can be adopted under the condition of requirement, and the controller is mainly used for receiving and calculating data transmitted by each sensor and controlling the switching and flux of the electromagnetic valve 12.
The hydrodynamic retarder comprises a driving shaft 21, a first oil pump 22, a second oil pump 23, an oil tank 24 and an oil working chamber 27 formed by a stator 25 and a rotor 26, wherein the first oil pump 22 and the second oil pump 23 are both connected with the driving shaft 21, the driving shaft 21 drives the first oil pump 22 and the second oil pump 23 to operate, the first oil pump 22 is communicated with the oil tank 24 and can pump oil in the oil tank 24 into a first oil inlet pipeline 28, the second oil pump 23 is communicated with the oil tank 24 through a lubricating oil passage 37, and the lubricating oil passage 37 can pump the oil out of the oil tank 24 to lubricate an oil seal and a bearing of the hydrodynamic retarder.
The first oil inlet pipeline 28 is connected with an oil inlet 12-1 of the electromagnetic valve 12, the first oil inlet pipeline 28 is further connected with an oil pressure sensor 28-1 for sensing the oil pressure of oil in the first oil inlet pipeline 28, the oil pressure sensor 28-1 is electrically connected with the controller 11, a first oil outlet 12-2 of the electromagnetic valve 12 is communicated with the oil working chamber 27, and a second oil outlet 12-3 of the electromagnetic valve 12 is communicated with the oil tank 24 through an oil discharge pipeline; when the hydrodynamic retarder is in a working state, the controller 11 controls the oil inlet 12-1 to be communicated with the first oil outlet 12-2, so that oil flows through the electromagnetic valve 12 from the first oil inlet pipe and enters the oil working chamber 27, and when the hydrodynamic retarder is in a non-working state, the controller 11 controls the oil inlet 12-1 to be communicated with the second oil outlet 12-3, so that the oil returns to the oil tank 24 through the oil discharging pipeline 29. In addition, the first oil inlet pipeline 28 is also connected with a safety pipeline 30, the safety pipeline 30 is communicated with the oil tank 24 through the oil unloading pipeline 29, a safety valve 30-1 is arranged on the safety pipeline 30, the safety valve 30-1 controls oil to flow from the first oil inlet pipeline 28 to the oil unloading pipeline 29, and when the oil pressure on the first oil inlet pipeline 28 exceeds the resistance of the safety valve 30-1, the oil flows to the oil unloading pipeline 29 through the safety pipeline 30 and then flows back to the oil tank 24.
Furthermore, in order to maintain the air pressure in the oil tank 24 balanced with the external atmospheric pressure, the oil tank 24 is further provided with an air inlet/outlet valve 24-1, which can be used to adjust the air pressure state in the oil tank 24 and prevent external impurities from entering the oil tank 24, when the oil is pumped into the first oil inlet pipeline 28 by the first oil pump 22, air can enter the oil tank 24 through the air inlet/outlet valve 24-1, so that the oil can be smoothly pumped into the first oil inlet pipeline 28, and when the operation of the hydraulic retarder is stopped, the oil flows back into the oil tank 24, and air in the oil tank 24 can be discharged through the air inlet/outlet valve 24-1.
The hydrodynamic retarder also comprises a heat exchanger 31, the oil working cavity 27 is communicated with the heat exchanger 31 through a first oil return pipeline 32, the first oil return pipeline 32 is provided with a throttle valve 32-1 and a one-way valve 32-2, the one-way valve 32-2 controls the flowing direction of oil to flow from the oil working cavity 27 to the heat exchanger 31, the throttle valve 32-1 can play a role in stabilizing pressure and throttling on the oil flowing out of the oil working cavity 27, and the one-way valve 32-2 can play a role in stabilizing flow and damping on the oil flowing through the throttle valve 32-1 to prevent the oil from flowing backwards. The oil cavity on the back of the rotor 26 is further connected with a second oil return pipeline 33, the second oil return pipeline 33 is communicated with the heat exchanger 31 after being converged with the first oil return pipeline 28, the second oil return pipeline 33 is connected with an oil temperature sensor 33-1 for sensing the oil temperature of oil in the second oil return pipeline 33, the oil temperature sensor 33-1 is electrically connected with the controller 11, the heat exchanger 31 is further communicated with a cold oil outlet pipeline 34, a cooling water outlet pipeline 35 and a cooling water inlet pipeline 36, the cold oil outlet pipeline 34 is communicated with the first oil inlet pipeline 28, the cooling water outlet pipeline 35 is provided with a water temperature sensor 35-1, and the water temperature sensor 35-1 is electrically connected with the controller 11.
The oil working chamber 27 is further connected with a ball float valve 27-2 and an oil-gas separation device 27-1, when oil is injected into the oil working chamber 27 through the oil-gas separation device 27-1, air accumulated in the oil working chamber 27 is discharged, the air with oil is separated, meanwhile, after the oil working chamber 27 is gradually filled with oil, a floating ball (not marked) in the ball float valve 27-2 can float upwards under the buoyancy action of the oil and closely contact with a sealing ring (not marked) in the ball float valve 27-2 to form sealing, so that the oil cannot overflow to the oil-gas separation device 27-1 through the ball float valve 27-2, and the oil working chamber 27 is ensured to be filled with the oil.
The working principle of the present invention is that the driving shaft 21 of the hydrodynamic retarder is connected to the transmission shaft of the vehicle, the driving shaft 21 is rotated by the rotation of the transmission shaft of the vehicle, and the driving shaft 21 is connected to the first oil pump 22 and the second oil pump 23, so that the first oil pump 22 and the second oil pump 23 operate under the rotation of the driving shaft 21. Under the working condition of the hydrodynamic retarder, the first oil pump 22 pumps oil out of the oil tank 24 and enters the first oil inlet pipeline 28, the first oil inlet pipeline 28 is connected with an oil pressure sensor 28-1 to monitor oil pressure in the pipeline, the first oil inlet pipeline 28 is communicated with the oil inlet 12-1 of the electromagnetic valve 12, under the working condition of the hydrodynamic retarder, the oil inlet 12-1 of the electromagnetic valve 12 is communicated with the first oil outlet 12-2 of the electromagnetic valve 12, the first oil outlet 12-2 is communicated with an oil working chamber 27 formed by the stator 25 and the rotor 26, so that the oil flows into the oil working chamber 27 through the electromagnetic valve 12, and at the moment, resistance is generated by the rotation stirring of the stator 25 and the rotor 26 in the oil working chamber 27, and the effect of retarding is achieved. Meanwhile, the oil temperature is increased in the oil working chamber 27 due to the stirring of the oil, the high-temperature oil enters the first oil return pipeline 32 from the oil working chamber 27 and flows to the heat exchanger 31 through the first oil return pipeline 32, the cooling water is used for cooling the high-temperature oil in the heat exchanger 31, and the cooled oil flows back to the first oil inlet pipeline 28 through the cold oil outlet pipeline 34 to continue to participate in the work. Meanwhile, the high-temperature oil in the oil cavity at the back of the stator 25 also flows back to the heat exchanger 3132 through the second oil return line 33 to cool down, and an oil temperature sensor 33-1 is installed on the second oil return line 33 to monitor the temperature of the oil flowing out of the oil working cavity 27. When the oil inlet amount is reduced by the controller 11 adjusting the electromagnetic valve 12 according to the vehicle running requirement, the oil pressure in the first oil inlet line 28 is increased, and when the oil pressure exceeds the resistance of the relief valve 30-1, the oil flows back to the oil discharge line 29 through the relief line 30 and then flows back to the oil tank 24 through the oil discharge line 29.
When the hydrodynamic retarder stops working, the first oil pump 22 pumps oil into the first oil inlet pipeline 28, at this time, the controller 11 controls the electromagnetic valve 12 to communicate the oil inlet 12-1 with the second oil outlet 12-3, and the oil flows into the oil discharging pipeline 29 through the second oil outlet 12-3 of the electromagnetic valve 12 and then flows back to the oil tank 24 through the oil discharging pipeline 29.
Meanwhile, since the second oil pump 23 is connected to the driving shaft 21, no matter whether the hydrodynamic retarder is working or not, the driving shaft 21 drives the second oil pump 23 to operate, so that oil is pumped out from the oil tank 24 through the lubrication pipeline 29 to lubricate an oil seal and a bearing in the hydrodynamic retarder.
According to the hydraulic retarder, the first oil inlet pipeline 28 is connected with the oil pressure sensor 28-1, the second oil return pipeline 33 is connected with the oil temperature sensor 33-1, the cooling water outlet pipeline 35 of the heat exchanger 31 is provided with the water temperature sensor 35-1, whether the working state of the hydraulic retarder is normal or not can be judged through the oil pressure, the oil temperature and the water temperature sensed by the sensors, the oil inlet amount of the electromagnetic valve 12 can be adjusted according to the numerical value of the sensors, and therefore the purposes of accurately controlling the oil amount and improving the working efficiency of the hydraulic retarder are achieved.
In addition, due to the oil circuit design of the invention, under the condition that the hydraulic retarder does not work, oil still flows in the first oil inlet pipeline 28, so that the accumulation of air in the oil circuit is reduced, when the hydraulic retarder needs to work, the electromagnetic valve 12 is communicated with the first oil inlet pipeline 28, so that the oil can be quickly led into the oil working cavity 27, and the effect performance of the hydraulic retarder is improved.
The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention; while the foregoing has been described in terms of what is presently considered to be practical and preferred, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. The utility model provides a hydraulic retarber of oil pump control, includes the control unit and hydraulic retarber, its characterized in that:
the control unit comprises a controller and an electromagnetic valve, the electromagnetic valve comprises an oil inlet, a first oil outlet and a second oil outlet, the controller is electrically connected with the electromagnetic valve and controls the electromagnetic valve to switch the communication between the oil inlet and the first oil outlet as well as the communication between the oil inlet and the second oil outlet;
the hydraulic retarder comprises a driving shaft, a first oil pump, an oil tank and an oil working chamber formed by a stator and a rotor, wherein the first oil pump is connected with the driving shaft and is driven by the driving shaft to operate, the first oil pump is communicated with the oil tank and pumps oil in the oil tank into a first oil inlet pipeline, the first oil inlet pipeline is connected with an oil inlet of the electromagnetic valve, a first oil outlet of the electromagnetic valve is communicated with the oil working chamber, and a second oil outlet of the electromagnetic valve is communicated with the oil tank through an oil discharge pipeline; and in a non-working state of the hydrodynamic retarder, the oil inlet is communicated with the second oil outlet, so that the oil returns to the oil tank through the oil discharge pipeline.
2. The oil pump controlled hydrodynamic retarder according to claim 1, characterized in that: the hydrodynamic retarder further comprises a second oil pump, the second oil pump is connected with the driving shaft and driven by the driving shaft to operate, the second oil pump is communicated with the oil tank through a lubricating oil way, and oil is pumped out of the oil tank through the lubricating oil way.
3. The oil pump controlled hydrodynamic retarder according to claim 1, characterized in that: the oil tank is provided with air inlet and outlet valves, and the air inlet and outlet valves are used for adjusting the air pressure state in the oil tank.
4. The oil pump controlled hydrodynamic retarder according to claim 1, characterized in that: the hydraulic retarder further comprises a heat exchanger, the oil working cavity is communicated with the heat exchanger through a first oil return pipeline, the first oil return pipeline is provided with a throttle valve and a one-way valve, and the one-way valve controls the flowing direction of oil to flow from the oil working cavity to the heat exchanger.
5. The oil pump controlled hydrodynamic retarder of claim 2, characterized in that: the oil cavity at the back of the rotor is also connected with a second oil return pipeline, and the second oil return pipeline is communicated with the heat exchanger after being converged with the first oil return pipeline.
6. The oil pump controlled hydrodynamic retarder according to claim 5, characterized in that: the heat exchanger is connected with the cooling water inlet pipeline and the cooling water outlet pipeline, the cooling water outlet pipeline is provided with a water temperature sensor, and the water temperature sensor is electrically connected with the controller.
7. The oil pump controlled hydrodynamic retarder of claim 1, characterized in that: the first oil inlet pipeline is connected with an oil pressure sensor and used for sensing oil pressure in the first oil inlet pipeline, and the oil pressure sensor is electrically connected with the controller.
8. The oil pump controlled hydrodynamic retarder of claim 5, characterized in that: the second oil return pipeline is connected with an oil temperature sensor and used for sensing the oil temperature of oil in the second oil return pipe, and the oil temperature sensor is electrically connected with the controller.
9. The oil pump controlled hydrodynamic retarder according to claim 1, characterized in that: the first oil inlet pipeline is further connected with a safety pipeline, the safety pipeline is communicated with the oil tank through the oil unloading pipeline, a safety valve is arranged on the safety pipeline, and the safety valve controls oil to flow to the oil unloading pipeline from the first oil inlet pipeline.
10. The oil pump controlled hydrodynamic retarder of claim 4, characterized in that: and a cold oil outlet pipeline of the heat exchanger is communicated with the first oil inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210621009.9A CN115199674A (en) | 2022-06-02 | 2022-06-02 | Hydraulic retarder controlled by oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210621009.9A CN115199674A (en) | 2022-06-02 | 2022-06-02 | Hydraulic retarder controlled by oil pump |
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| Publication Number | Publication Date |
|---|---|
| CN115199674A true CN115199674A (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210621009.9A Pending CN115199674A (en) | 2022-06-02 | 2022-06-02 | Hydraulic retarder controlled by oil pump |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300754A (en) * | 2008-12-09 | 2011-12-28 | 伊凡克发展有限公司 | Braking energy recovery system for a vehicle and vehicle equipped with same |
| CN104595387A (en) * | 2015-02-02 | 2015-05-06 | 北京科技大学 | Integrated hydraulic retarder |
| CN111927905A (en) * | 2020-08-27 | 2020-11-13 | 阜新德尔汽车部件股份有限公司 | Hydraulic retarder with controllable internal pressure of oil tank |
| CN111927904A (en) * | 2020-08-27 | 2020-11-13 | 阜新德尔汽车部件股份有限公司 | Constant speed reduction controllable hydraulic retarder |
| CN114033817A (en) * | 2021-11-12 | 2022-02-11 | 北京科技大学 | Self-cooling hydraulic retarder for heavy vehicle |
-
2022
- 2022-06-02 CN CN202210621009.9A patent/CN115199674A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300754A (en) * | 2008-12-09 | 2011-12-28 | 伊凡克发展有限公司 | Braking energy recovery system for a vehicle and vehicle equipped with same |
| CN104595387A (en) * | 2015-02-02 | 2015-05-06 | 北京科技大学 | Integrated hydraulic retarder |
| CN111927905A (en) * | 2020-08-27 | 2020-11-13 | 阜新德尔汽车部件股份有限公司 | Hydraulic retarder with controllable internal pressure of oil tank |
| CN111927904A (en) * | 2020-08-27 | 2020-11-13 | 阜新德尔汽车部件股份有限公司 | Constant speed reduction controllable hydraulic retarder |
| CN114033817A (en) * | 2021-11-12 | 2022-02-11 | 北京科技大学 | Self-cooling hydraulic retarder for heavy vehicle |
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