CN113309747A - Hydraulic valve block temperature control simulation system and test method for hydraulic automatic transmission - Google Patents
Hydraulic valve block temperature control simulation system and test method for hydraulic automatic transmission Download PDFInfo
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- CN113309747A CN113309747A CN202110706423.5A CN202110706423A CN113309747A CN 113309747 A CN113309747 A CN 113309747A CN 202110706423 A CN202110706423 A CN 202110706423A CN 113309747 A CN113309747 A CN 113309747A
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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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0427—Heating
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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
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
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- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a hydraulic valve block temperature control simulation system and a test method of a hydraulic automatic transmission. The system can directly test the hydraulic valve block, the torque converter simulation device, the valve block cooling and lubricating simulation device and the like of the hydraulic unit to confirm the states of the hydraulic unit at different temperatures, reduce the hydraulic automatic transmission faults caused by uncertainty of the working state of the hydraulic unit under large temperature difference at various regions in China, and improve the test efficiency.
Description
Technical Field
The invention belongs to the technical field of transmissions, and particularly relates to a temperature control simulation system and a test method for a hydraulic valve block of a hydraulic automatic transmission.
Background
The oil temperature of the hydraulic automatic transmission has important influence on the characteristic curve, the response speed, the working state, the reliability and the use cost of a hydraulic valve block. Therefore, the influence of the oil temperature of the hydraulic automatic transmission in different states on the hydraulic valve block needs to be researched, and at present, domestic research on a special test bench for testing the working state of the hydraulic valve block at different temperatures is less. Most of the hydraulic valve block working state tests are conducted by indirectly measuring the working state of the hydraulic valve block at different temperatures, the characteristics such as performance curves and the like cannot be directly expressed, the hydraulic valve block is difficult to directly control, errors exist, and the measurement result is not in accordance with the actual measurement result.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a temperature control simulation system and a test method for a hydraulic valve block of a hydraulic automatic transmission, so as to solve the problems that in the prior art, the hydraulic valve block is tested in working states at different temperatures, the characteristics such as performance curves and the like are difficult to visually express, the hydraulic valve block is difficult to directly control, errors exist, and the measurement result is not in accordance with the actual result.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a hydraulic valve block temperature control simulation system of a hydraulic automatic transmission comprises an oil pool, wherein the oil pool is communicated to a selection valve, the output end of the selection valve is simultaneously connected to a heating device and a cooling device, the output end of the heating device and the output end of the cooling device are simultaneously connected to an oil return switch valve, the oil return switch valve is connected to a temperature control module oil pool selection valve, and the temperature control simulation oil pool selection valve is communicated to the oil pool;
the oil pool is connected to an oil supply module safety device, and the oil supply module safety device is connected to an oil supply module pressure regulating valve;
the output end of the oil supply module regulating valve is divided into two paths, one path is connected to the simulation module safety device, the other path is communicated to the simulation module secondary pressure regulating valve, and the simulation module secondary pressure regulating valve is communicated to the simulation module oil supply control valve;
the simulation module safety device is communicated to a simulation module control valve, and the simulation module control valve is communicated to a simulation module selection valve and a cooling and lubricating simulation unit;
the simulation module oil supply control valve is communicated to a simulation module selection valve, the simulation module selection valve is communicated to a hydraulic torque converter simulation unit, the hydraulic torque converter simulation unit is communicated to a cooling and lubricating simulation unit, and the cooling and lubricating simulation unit is connected to an oil pool.
The invention is further improved in that:
preferably, the oil inlet end of the selector valve is provided with a first temperature sensor, and the oil inlet end of the oil return switch valve is provided with a second temperature sensor.
Preferably, the oil pool comprises an oil pool I, an oil pool II and an oil pool III; the first oil pool is communicated to an oil pump, and the oil pump is communicated with a selector valve; and the temperature control module oil pool selection valve is communicated to the oil pool II and the oil pool III.
Preferably, the oil pool II and the oil pool III are both communicated to an oil pool selection valve of the oil supply module, and the oil pool selection valve of the oil supply module is communicated to a safety device of the oil supply module.
Preferably, the second oil pool and the third oil pool are communicated to an oil return pipeline, and the oil return pipeline is communicated to the first oil pool.
Preferably, a branch is arranged on a connecting pipeline between the oil pump and the selector valve and communicated to the temperature control module safety device.
Preferably, an oil pump II is arranged between the oil pool and the oil supply module safety device, a branch is arranged on a connecting pipeline of the oil pump II and the oil supply module safety device, and the branch is connected to the oil supply module bypass device.
Preferably, a third temperature sensor is arranged on a connecting pipeline between the second oil pump and the oil supply module safety device, and the third temperature sensor is arranged in front of the branch.
Preferably, a branch is arranged on a connecting pipeline of the oil supply module safety device and the pressure regulating valve of the oil supply module and is connected to the energy storage device of the oil supply module.
According to the temperature of oil in an oil pool, a selection valve selects the oil to pass through a heating device or a cooling device, and the oil enters the oil pool after the temperature of the oil meets the requirement;
the oil in the oil pool enters a pressure regulating valve of the oil supply module for pressure regulation after being stabilized by a safety device of the oil supply module, the oil after pressure regulation is divided into two paths, one path of the oil enters a control valve of the analog module after passing through the safety device of the analog module, and the other path of the oil enters a control valve of the analog module after being subjected to secondary pressure regulation by a secondary pressure regulating valve of the analog module; after the simulation module control valve and the simulation module oil supply control valve are opened, the simulation module selector valve is opened, and oil enters the hydraulic torque converter simulation unit to test the working condition of the torque converter and the locking working condition of the torque converter;
when the control valve of the simulation module is closed and the oil supply control valve of the simulation module is opened, oil enters the hydraulic torque converter simulation unit and the cooling and lubricating simulation unit from the selection valve of the simulation module, and the torque converter reverse torque conversion test, the torque converter reverse locking working condition test, the cooling and lubricating simulation test and the cooling and lubricating torque converter disturbance test are carried out.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a hydraulic valve block temperature control simulation system of a hydraulic automatic transmission, which is used for firstly carrying out temperature adjustment treatment on oil through a heating device and a cooling device, and enabling the oil with the temperature meeting the requirement to enter a simulation module for simulation after pressure stabilization and pressure adjustment. The system can directly test the hydraulic valve block, the torque converter simulation device, the valve block cooling and lubricating simulation device and the like of the hydraulic unit to confirm the states of the hydraulic unit at different temperatures, reduce the hydraulic automatic transmission faults caused by uncertainty of the working state of the hydraulic unit under large temperature difference at various regions in China, and improve the test efficiency. The system controls the oil temperature to be in a range of minus 30 ℃ to 160 ℃, and the hydraulic valve blocks in the system are independently tested, so that the performance of the valve blocks such as the working state, the response time and the characteristic curve of the valve blocks under different oil temperatures can be directly observed. Finishing the confirmation of the working states of the hydraulic valve block at different temperatures; completing the test of the characteristic curves of the hydraulic valve block at different temperatures; completing the response time test of the hydraulic valve block at different temperatures; and completing the calibration of the hydraulic valve block.
The invention also discloses a test method based on the hydraulic valve block temperature control simulation system of the hydraulic automatic transmission, which can directly test the hydraulic valve block, a torque converter simulation device, a valve block cooling and lubricating simulation device and the like of the hydraulic unit to confirm the states of the hydraulic unit at different temperatures, reduce the faults of the hydraulic automatic transmission caused by uncertain working states of the hydraulic unit under large temperature difference at various regions in China, and improve the test efficiency.
Drawings
FIG. 1 is a diagram of a simulation system of the present invention;
the reference numbers in the figure are shown in the following table 1:
table 1 parts number table
| Numbering | Name (R) | Numbering | Name (R) |
| 1 | Oil pump 1 | 15 | Oil supply |
| 2 | Temperature sensor 1 | 16 | Safety device for |
| 3 | |
17 | Oil supply module energy storage device |
| 4 | Safety device for |
18 | Pressure regulating valve of |
| 5 | |
19 | Analog module oil supply control valve |
| 6 | |
20 | Analog module two-stage pressure regulating valve |
| 7 | |
21 | Analog |
| 8 | Oil pump II | 22 | Analog module selector valve |
| 9 | Temperature sensor III | 23 | Hydraulic torque |
| 10 | Oil |
24 | Cooling and |
| 11 | Oil pump III | 25 | Analog |
| 12 | Temperature control module oil |
26 | Oil pool 1 |
| 13 | Oil pool selection valve of |
27 | |
| 14 | Oil pool three |
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, both fixed and removable connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a test bench for hydraulic valve blocks aiming at products containing the hydraulic valve blocks, such as a hydraulic automatic gearbox, and the like, and meets the requirements of performance tests and interference tests of the hydraulic valve blocks at different temperatures. The test system can simulate the real working state of the hydraulic valve block in the hydraulic automatic transmission assembly, and can realize the simulation of the torque converter torque conversion working condition and the locking working condition of the hydraulic valve block and the simulation of the cooling and lubricating loop under different temperature environments. The system comprises an oil temperature control module: the oil supply simulation system is driven by the driving motor, parameters such as pressure, temperature and the like in the oil supply loop are monitored, the heating loop or the cooling loop is selected by the system by comparing the difference between the input temperature and the actual temperature, the loop is stabilized by the pressure reducing valve, and the oil-gas separation device and the fine filter ensure the cleanliness of oil liquid; the simulation of the cooling and lubricating device of the hydraulic automatic transmission is realized through a hydraulic valve block and a reversing valve; an oil supply system module: the oil pump is driven by a controllable motor to supply oil, the rotating speed of the motor is determined by calculating the oil pressure and flow requirements input into the system and performing feedback regulation on parameters such as pressure and flow measured in a loop, the oil pressure is stabilized by feedback control and an energy accumulator, a temperature control system is ensured to provide oil with required temperature by measuring parameters of temperature, and when the oil temperature is not in accordance with expectation, the oil enters an oil pool through a regulating valve and goes to an oil temperature control module; hydraulic valve piece simulation module: the oil liquid sent by the oil supply system module is subjected to blending distribution; the hydraulic torque converter simulation module: the locking working condition and the torque conversion working condition simulation of the hydraulic torque converter are realized through electromagnetic valve adjustment, parameters such as pressure, flow, temperature and the like of each module are monitored, and each module is provided with a safety device (such as a pressure release valve, a one-way throttle valve, an overflow valve and the like) to ensure the normal work of each module, so that the basic structure and the working principle of the hydraulic automatic transmission hydraulic valve block temperature control simulation system are described above.
Fig. 1 is a schematic diagram of a hydraulic valve block temperature control simulation system of a hydraulic automatic transmission, and the test system mainly comprises an oil temperature control module, a cooling and lubricating module, an oil supply system module, a hydraulic valve block simulation module and a hydraulic torque converter simulation module.
A cooling and lubricating module: the simulation of the cooling and lubricating device of the hydraulic automatic transmission is realized through a hydraulic valve block and a reversing valve;
an oil supply system module: the controllable motor drives the oil pump to supply oil, and the hydraulic torque converter simulation module comprises: the locking working condition and the torque conversion working condition simulation of the hydraulic torque converter are realized through the adjustment of the electromagnetic valve, parameters such as pressure, flow, temperature and the like of each module are monitored, and each module is provided with a safety device (such as a pressure release valve, a one-way throttle valve, an overflow valve and the like) to ensure that each module works normally.
Oil temperature control module
The outlet end of the first oil pool 26 is connected to the first oil pump 1, the outlet end of the first oil pump 1 is connected to the selector valve 3, a first temperature sensor 2 is arranged between the first oil pump 1 and the selector valve 3, and a pipeline between the outlet end of the first oil pump 1 and the first temperature sensor 2 is communicated with a safety device 4 connected to the temperature control module. The selector valve 3 is connected to the heating device 5 and the cooling device 6 at the same time, the outlet ends of the heating device 5 and the cooling device 6 are connected to the oil return switch valve 10 at the same time, the inlet end of the oil return switch valve 10 is provided with a second temperature sensor 7, the outlet end of the oil return switch valve 10 is connected to the temperature control module oil pool selector valve 12, and the outlet end of the temperature control module oil pool selector valve 12 is communicated with a second oil pool 27 or a third oil pool 14. One way of the oil tank II 27 and one way of the oil tank III 14 are respectively communicated to an oil return pipeline 28, the oil return pipeline 28 is provided with an oil pump III 11, and the oil return pipeline 28 leads to the oil tank I11. The temperature control module safety device 4 is a pilot electromagnetic overflow valve, the heating device 5 is a heater, and the cooling device 6 is a heat exchanger.
The working principle of the oil temperature control module is as follows: the oil filtered by the crude oil filter in the oil pool I26 enters the oil temperature control system through the oil pump I1, the entering oil is separated by the separator from micro impurities, gases and the like mixed in the oil, so that the oil meets the cleanliness requirement, if the temperature of the purified oil does not meet the use requirement, the oil reaching the use requirement is subjected to temperature test by the temperature sensor I2 through the bypass by the temperature control module safety device 4, the tested oil is distributed to the heating device 5 or the cooling device 6 by the selector valve 3, and the discharged oil is qualified after the temperature test, the oil return switch valve 10 distributes the oil to the temperature control module oil pool selection valve 12, the oil is distributed by the temperature control module oil pool selection valve 12 and then goes to different oil tanks, an oil pool II 27 or an oil pool III 14, the oil liquid which does not reach the rated temperature, and re-enters the oil temperature control module through an oil return pipeline 28 to circulate until the rated temperature is reached.
Oil supply system module
The oil outlet end of the oil pool II 27 or the oil pool III 14 is communicated to the oil pool selection valve 13 of the oil supply module, the outlet end of the oil pool selection valve 13 of the oil supply module is communicated to the safety device 16 of the oil supply module, an oil pump II 8 is arranged between the oil pool selection valve 13 of the oil supply module and the safety device 16 of the oil supply module, a branch is arranged on an oil supply pipeline between the oil pump II 8 and the safety device 16 of the oil supply module and communicated to the bypass device 15 of the oil supply module, and a temperature sensor III 9 is arranged in front of the branch on the oil supply pipeline. The outlet end of the oil supply module safety device 16 is communicated to a communication pipeline between the oil supply module safety device 16 and the oil supply module pressure regulating valve 18, and an oil supply module energy storage device 17 is arranged on the communication pipeline. One end of the oil supply module bypass device 15 is communicated with the first oil pool 26, and when the pressure is too high or the flow is too high, the device is opened to guide the oil (the excess pressure or the excess flow corresponds to the oil) into the first oil pool 26. The oil supply module bypass device 15 is a pilot overflow valve, the oil supply module safety device 16 is an overflow valve, and the oil supply module energy storage device 17 is an energy accumulator.
The working principle of the oil supply system module is as follows: the oil supply module oil pool selection valve 13 determines which oil pool is used for supplying oil, oil is supplied by the motor driven oil pump II 8, the rotating speed of the motor is calculated through oil pressure and flow requirements input into the system and is determined through feedback adjustment of parameters such as pressure and flow measured in a loop, meanwhile, the outlet pressure of the oil pump II 8 is stabilized through feedback control and an oil supply module bypass device 15, the temperature of the oil is confirmed by a temperature sensor III 9, if the temperature of the oil in the oil supply loop is unqualified, the oil supply module bypass device 15 is opened, and the oil flows back to the oil pool I26 oil temperature control module oil tank. The oil hydraulic pressure in the loop is stabilized through the oil supply module safety device 16 and the oil supply module energy storage device 17, and the oil regulated by the pressure regulating valve 18 of the oil supply module is input into the hydraulic valve block simulation module.
Hydraulic valve piece simulation module: the output end of the oil supply module regulating valve 18 is divided into two paths, one path is communicated with the simulation module safety device 25, the other path is communicated with the simulation module secondary pressure regulating valve 20, the output end of the simulation module safety device 25 is communicated to the simulation module control valve 21, and the output end of the simulation module secondary pressure regulating valve 20 is communicated to the simulation module oil supply control valve 19.
According to the working principle of the hydraulic valve block simulation module, oil fed into the hydraulic valve block simulation module is divided into two paths, one path of oil passes through the simulation module safety device 25 and then is fed into the simulation module control valve 21 simulation module selection valve to perform switching valve selection on a converter simulation module loop and a cooling lubrication simulation module loop, and the other path of oil is fed into the simulation module control valve 20 simulation module secondary pressure regulating valve to perform secondary pressure regulation on the converter simulation module loop and the cooling lubrication simulation module by the simulation module oil supply control valve 19 simulation module oil supply control valve.
Torque-converting working condition and locking working condition simulation and cooling lubrication loop simulation module of hydraulic torque converter
The output end of the analog module control valve 21 and the analog are divided into two paths, one path is communicated with the analog module selection valve 22, and the other path is communicated with the cooling and lubricating analog unit 24. The output end of the simulation module oil supply control valve 19 is communicated with the torque converter simulation unit 23, the output end of the torque converter simulation unit 23 is communicated with the cooling and lubricating simulation unit 24, and the output end of the cooling and lubricating simulation unit 24 is communicated with an oil tank of the oil temperature control module.
The opened simulation module control valve 21 opens the control valves of the simulation module selector valve 22 and the cooling and lubricating simulation unit 24 for the output oil, at this time, the oil output by the simulation module oil supply control valve 19 enters the hydraulic torque converter simulation unit 23 to simulate the torque converter torque conversion working condition and the locking working condition, the oil output by the hydraulic torque converter simulation unit 23 returns to the oil temperature control module oil tank through the control valve of the cooling and lubricating simulation unit 24, when the simulation module control valve 21 is closed, no oil is input into the control valves of the simulation module selector valve 22 and the cooling and lubricating simulation unit 24, and the oil input by the simulation module oil supply control valve 19 respectively enters the hydraulic torque converter simulation unit 23 and the cooling and lubricating simulation unit 24 to simulate the torque converter locking working condition and the cooling and lubricating. The torque converter simulation unit 23 is a torque converter simulation valve, the cooling and lubrication simulation unit 24 is a cooling and lubrication simulation valve, and the simulation module safety device 25 is a pressure reducing valve.
The working process of the module is as follows:
the test method for simulating the constant temperature comprises the following steps: the oil filtered through the crude oil in the oil tank enters the oil temperature control system through the oil pump I1, the entering oil is subjected to separation of tiny magazines, gas and the like mixed in the oil through the separator, the oil meets the cleanliness requirement, if the purified oil does not meet the use requirement, bypass is carried out through the temperature control module safety device 4, the oil meeting the use requirement can be subjected to temperature test through the temperature sensor I2, the selector valve 3 distributes the oil to the heating device 5 to heat when the temperature is lower than the set temperature, the selector valve 3 distributes the oil to the cooling device 6 to cool when the temperature is higher than the set temperature, the heated/cooled oil is subjected to temperature detection through the temperature sensor II 7, and the oil is distributed to the oil pool III 14 through the oil return switch valve 10 and the temperature control module oil pool selector valve 12 after the set temperature is met. The oil in the oil pool III 14 is supplied by the motor-driven oil pump II 8, the rotating speed of the motor is calculated through the oil pressure and flow requirements input into the system and is determined through feedback adjustment of parameters such as pressure and flow measured in a loop, meanwhile, the outlet pressure of the oil pump II 8 is stabilized through feedback control and an oil supply module bypass device 15, the temperature of the oil is confirmed by a temperature sensor III 9, and if the temperature of the oil in the oil supply loop is unqualified, the oil supply module bypass device 15 opens the oil and returns the oil to the oil pool I26. The oil hydraulic pressure in the circuit is stabilized by the oil module safety device 16 and the oil module energy storage device 17. The oil liquid regulated by the pressure regulating valve 18 of the oil supply module is divided into two paths, one path of the oil liquid enters the control valve 21 of the analog module after passing through the safety device 25 of the analog module, the other path of the oil liquid enters the oil supply control valve 19 of the analog module after passing through the secondary pressure regulating valve 20 of the analog module for secondary pressure regulation, when the control valve 21 of the analog module and the oil supply control valve 19 of the analog module are opened, the selection valve 22 of the analog module is opened, the oil liquid enters the simulation unit 23 of the hydraulic torque converter, and the torque conversion working condition and the locking working condition test of the torque converter under different flow rates can be realized by controlling the oil supply control valve 19 of the analog module and the simulation unit 23 of the hydraulic torque converter; when the simulation module control valve 21 is closed and the simulation module oil supply control valve 19 is opened, oil enters the hydraulic torque converter simulation unit 23 and the cooling and lubricating simulation unit 24 from the simulation module selection valve 22, and the torque converter reverse torque conversion test, the torque converter reverse locking working condition test, the cooling and lubricating simulation test and the torque converter disturbance test of cooling and lubricating under certain temperature, different pressures and different flow rates can be completed by adjusting the simulation module oil supply control valve 19 and the oil supply module pressure regulating valve 18.
Test method for simulating dynamically changing temperature (cold and hot shock): setting two temperatures, enabling oil in an oil pool I26 to enter an oil temperature control system through an oil pump I1, enabling the entered oil to be separated from micro impurities, gas and the like mixed in the oil through a separator to enable the oil to meet the cleanliness requirement, bypassing the temperature control module safety device 4 if the purified oil does not meet the use requirement, carrying out temperature test on the oil meeting the use requirement through a temperature sensor I2, distributing the oil to a heating device 5 by a selector valve 3 to heat when the temperature is lower than the lower temperature of the two set temperatures, distributing the oil to a cooling device 6 by the selector valve 3 to cool when the temperature is higher than the lower temperature of the two set temperatures, carrying out temperature detection on the heated/cooled oil through a temperature sensor II 7, and distributing the oil to an oil pool II 27 through an oil return switch valve 10 and a temperature control module oil pool selector valve 12 after the set temperatures are met, after the oil in the oil pool II 27 reaches the set liquid level, the oil can be subjected to temperature testing through the temperature sensor I2, the selector valve 3 distributes the oil to the heating device 5 to be heated when the temperature is lower than the higher temperature of the two set temperatures, the selector valve 3 distributes the oil to the cooling device 6 to be cooled when the temperature is higher than the lower temperature of the two set temperatures, the heated/cooled oil is subjected to temperature detection through the temperature sensor II 7, and the heated/cooled oil is distributed to the oil pool III 14 through the oil return switch valve 10 and the temperature control module oil pool selector valve 12 after the set temperature is met. At this time, the oil tank selection valve 13 of the oil supply module is controlled to enable the second oil pump 8 driven by the motor to extract oil from the second oil tank 27 and the third oil tank 14 according to requirements, the rotating speed of the motor is calculated through the oil pressure and flow requirements input into the system and is determined through feedback adjustment of parameters such as pressure and flow measured in a loop, meanwhile, the outlet pressure of the second oil pump 8 is stabilized through feedback control and the bypass device 15 of the oil supply module, the temperature of the oil is confirmed by the third temperature sensor 9, and if the temperature of the oil in the oil supply loop is unqualified, the bypass device 15 of the oil supply module opens the oil to return to the first oil tank 26. The oil hydraulic pressure in the circuit is stabilized by the oil module safety device 16 and the oil module energy storage device 17. The oil liquid regulated by the pressure regulating valve 18 of the oil supply module is divided into two paths, one path of the oil liquid enters a control valve of a control valve 21 of the analog module after passing through a safety device 25 of the analog module, the other path of the oil liquid enters an oil supply control valve 19 of the analog module after passing through a secondary pressure regulating valve 20 of the analog module after secondary pressure regulation, when the control valve 21 of the analog module and the oil supply control valve 19 of the analog module are opened, a selection valve 22 of the analog module is opened, the oil liquid enters a hydraulic torque converter simulation unit 23, and the torque converter torque conversion working condition and locking working condition test under different flow rates can be realized by controlling the oil supply control valve 19 of the analog module and the hydraulic torque converter simulation unit 23; when the simulation module control valve 21 is closed and the simulation module oil supply control valve 19 is opened, oil enters the hydraulic torque converter simulation unit 23 and the cooling and lubricating simulation unit 24 from the simulation module selection valve 22, and the simulation module oil supply control valve 19 is adjusted to complete torque converter reverse torque conversion testing, torque converter reverse locking working condition testing, cooling and lubricating simulation testing and torque converter disturbance testing of cooling and lubricating under different flow rates.
The test method for simulating the temperature control of the hydraulic valve block of the hydraulic automatic transmission is formed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The hydraulic valve block temperature control simulation system of the hydraulic automatic transmission is characterized by comprising an oil pool, wherein the oil pool is communicated to a selection valve (3), the output end of the selection valve (3) is simultaneously connected to a heating device (5) and a cooling device (6), the output end of the heating device (5) and the output end of the cooling device (6) are simultaneously connected to an oil return switch valve (10), the oil return switch valve (10) is connected to a temperature control module oil pool selection valve (12), and the temperature control simulation oil pool selection valve (12) is communicated to the oil pool;
the oil pool is connected to an oil supply module safety device (16), and the oil supply module safety device (16) is connected to an oil supply module pressure regulating valve (18);
the output end of the oil supply module regulating valve (18) is divided into two paths, one path is connected to the simulation module safety device (25), the other path is communicated to the simulation module secondary pressure regulating valve (20), and the simulation module secondary pressure regulating valve (20) is communicated to the simulation module oil supply control valve (19);
the simulation module safety device (25) is communicated to a simulation module control valve (21), and the simulation module control valve (21) is communicated to a simulation module selection valve (22) and a cooling and lubricating simulation unit (24);
the simulation module oil supply control valve (19) is communicated to a simulation module selection valve (22), the simulation module selection valve (22) is communicated to a hydraulic torque converter simulation unit (23), the hydraulic torque converter simulation unit (23) is communicated to a cooling and lubricating simulation unit (24), and the cooling and lubricating simulation unit (24) is connected to an oil pool.
2. The hydraulic valve block temperature control simulation system of the automatic hydraulic transmission according to claim 1, wherein a first temperature sensor (1) is arranged at an oil inlet end of the selector valve (3), and a second temperature sensor (7) is arranged at an oil inlet end of the oil return switch valve (10).
3. The hydraulic valve block temperature control simulation system of the hydraulic automatic transmission according to claim 1, wherein the oil pool comprises a first oil pool (26), a second oil pool (27) and a third oil pool (14); the first oil pool (26) is communicated to the oil pump (1), and the oil pump (1) is communicated with the selector valve (3); and the temperature control module oil pool selection valve (12) is communicated to the oil pool II (27) and the oil pool III (14).
4. The hydraulic valve block temperature control simulation system of the hydraulic automatic transmission according to claim 3, wherein the oil pool II (27) and the oil pool III (14) are both communicated to an oil supply module oil pool selection valve (13), and the oil supply module oil pool selection valve (13) is communicated to an oil supply module safety device (16).
5. The hydraulic valve block temperature control simulation system of the automatic hydraulic transmission according to claim 3, wherein the oil pool II (27) and the oil pool III (14) are both communicated to the oil return pipeline (28), and the oil return pipeline (28) is communicated to the oil pool I (26).
6. The hydraulic valve block temperature control simulation system of the hydraulic automatic transmission as recited in claim 2, characterized in that a connecting pipeline between the oil pump (1) and the selector valve (3) is provided with a branch to a temperature control module safety device (4).
7. The temperature control simulation system for the hydraulic valve block of the hydraulic automatic transmission as recited in claim 1, wherein a second oil pump (8) is arranged between the oil pool and the oil supply module safety device (16), and a branch is arranged on a connecting pipeline of the second oil pump (8) and the oil supply module safety device (16), and is connected to the oil supply module bypass device (15).
8. The temperature control simulation system for the hydraulic valve block of the hydraulic automatic transmission as recited in claim 7, wherein a third temperature sensor (9) is arranged on a connecting pipeline between the second oil pump (8) and the oil supply module safety device (16), and the third temperature sensor (9) is arranged in front of the branch.
9. The system according to claim 1, wherein a branch connection to the oil supply module energy storage device (17) is provided on a connection line between the oil supply module safety device (16) and the oil supply module pressure regulating valve (18).
10. A test method of the hydraulic valve block temperature control simulation system of the hydraulic automatic transmission is based on the claim 1, and is characterized in that according to the temperature of oil in an oil pool, the selection valve (3) selects the oil to pass through a heating device (5) or a cooling device (6), and the oil enters the oil pool after the temperature of the oil meets the requirement;
the oil in the oil pool enters a pressure regulating valve (18) of the oil supply module after being stabilized by a safety device (16) of the oil supply module for pressure regulation, the oil after pressure regulation is divided into two paths, one path of the oil enters a control valve (21) of the analog module after passing through a safety device (25) of the analog module, and the other path of the oil enters a control valve (19) of the oil supply module after being subjected to secondary pressure regulation by a secondary pressure regulating valve (20) of the analog module; after the simulation module control valve (21) and the simulation module oil supply control valve (19) are opened, the simulation module selection valve (22) is opened, and oil enters a hydraulic torque converter simulation unit (23) to test the working condition of the torque converter and the locking working condition of the torque converter;
when the analog module control valve (21) is closed and the analog module oil supply control valve (19) is opened, oil enters the hydraulic torque converter analog unit (23) and the cooling and lubricating analog unit (24) from the analog module selection valve (22) to perform torque converter reverse torque conversion testing, torque converter reverse locking working condition testing, cooling and lubricating analog testing and cooling and lubricating disturbance testing on the torque converter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110706423.5A CN113309747A (en) | 2021-06-24 | 2021-06-24 | Hydraulic valve block temperature control simulation system and test method for hydraulic automatic transmission |
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| CN202110706423.5A CN113309747A (en) | 2021-06-24 | 2021-06-24 | Hydraulic valve block temperature control simulation system and test method for hydraulic automatic transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414239A (en) * | 2021-12-21 | 2022-04-29 | 陕西法士特齿轮有限责任公司 | Gearbox rack calibration method, system, device, terminal equipment and storage medium |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414239A (en) * | 2021-12-21 | 2022-04-29 | 陕西法士特齿轮有限责任公司 | Gearbox rack calibration method, system, device, terminal equipment and storage medium |
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