CN116296380A - Device and method for testing energy consumption of hub bearing unit based on CLTC-P working condition - Google Patents
Device and method for testing energy consumption of hub bearing unit based on CLTC-P working condition Download PDFInfo
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- CN116296380A CN116296380A CN202310111221.5A CN202310111221A CN116296380A CN 116296380 A CN116296380 A CN 116296380A CN 202310111221 A CN202310111221 A CN 202310111221A CN 116296380 A CN116296380 A CN 116296380A
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- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
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Abstract
The invention relates to detection of a hub bearing unit of a vehicle wheel, and discloses an energy consumption testing device and method of the hub bearing unit under the working condition of CLTC-P, wherein the energy consumption testing device comprises a driving motor, a rotating speed sensor, a transmission assembly and a loading device, the loading device is used for applying radial load or axial load to a bearing to be tested, the driving motor drives the transmission assembly to rotate, and the rotating speed sensor and the loading device are both arranged on the transmission assembly; the device also comprises an environment bin and a high-low temperature box, wherein the high-low temperature box is connected with the environment bin and controls the temperature in the environment bin, a first clamp for clamping one end of the bearing to be tested is arranged in the environment bin, the transmission assembly comprises a transmission disc for fixing the other end of the bearing to be tested, and the other end of the first clamp is provided with a hydrostatic bearing. The hub bearing unit is tested by the testing device to obtain a result, and the device and the method can conveniently and continuously test and quantify the hub bearing unit, thereby being beneficial to the research and development of the low-torque hub bearing unit.
Description
Technical Field
The invention relates to detection of a hub bearing unit of a vehicle wheel, in particular to a device and a method for testing energy consumption of the hub bearing unit under a CLTC-P working condition.
Background
The whole world environmental awareness is improved, and the petroleum power energy consumption is continuously improved along with the popularization of automobiles. How to reduce the oil consumption and the electricity consumption of the train rabbet is continuously improved. The civil passenger car endurance and oil consumption are mainly tested by using a CLTC road spectrum, and the official endurance mileage and hundred kilometers oil consumption are obtained.
The light passenger car has two methods of common road test and standard road spectrum test in the whole car performance environmental bin. However, no matter which method is used, the energy consumption of the whole vehicle under a specific working condition can be only tested. The whole vehicle energy consumption comprises consumption of batteries, motors, drive axles, wheel ends, wind resistance of the vehicle body and the like, the test is long in time consumption and high in cost, and the final result is unfavorable for optimizing the fine energy consumption of the whole vehicle. If the single component can be tested by the testing machine to obtain the result, the hub bearing unit can be conveniently and continuously tested and quantified by the method, and low torque is facilitated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a device and a method for testing the energy consumption of a hub bearing unit under the working condition based on CLTC-P.
In order to solve the technical problems, the invention is solved by the following technical scheme:
the energy consumption testing device for the hub bearing unit under the CLTC-P working condition comprises a driving motor, a rotating speed sensor, a transmission assembly and a loading device, wherein the loading device is used for applying radial load or axial load to a bearing to be tested, the driving motor drives the transmission assembly to rotate, and the rotating speed sensor and the loading device are both arranged on the transmission assembly; the device also comprises an environment bin and a high-low temperature box, wherein the high-low temperature box is connected with the environment bin and controls the temperature in the environment bin, a first clamp for clamping one end of the bearing to be tested is arranged in the environment bin, the transmission assembly comprises a transmission disc for fixing the other end of the bearing to be tested, and the other end of the first clamp is provided with a hydrostatic bearing.
Preferably, the transmission assembly comprises a first transmission shaft, a coupler and a second transmission shaft, the output end of the driving motor is connected with the first transmission shaft, the rotating speed sensor is arranged on the first transmission shaft, the coupler is arranged between the first transmission shaft and the second transmission shaft, the transmission disc is fixedly connected with the other end of the second transmission shaft, and the loading device is arranged on the second transmission shaft through a bearing.
Preferably, the device further comprises a second clamp for clamping the bearing to be tested, the second clamp is fastened on the transmission disc through bolts, and the second clamp is arranged in the environment bin. The second clamp can enable the hub bearing unit to be more stable and firm on the testing device.
Preferably, the first clamp is fixed with an oil bearing mandrel flange through bolts, and the hydrostatic bearing is arranged on the oil bearing mandrel flange.
Preferably, the oil bearing mandrel further comprises a torque sensor, wherein the torque sensor is mounted on the oil bearing mandrel flange.
Based on the energy consumption test method of the hub bearing unit under the working condition of CLTC-P,
s1: pre-run
The hub bearing unit to be tested is arranged in a hub bearing unit energy consumption testing device under the working condition based on CLTC-P;
the temperature of the environmental bin is controlled to be 18-22 ℃ through a high-low temperature box;
starting a driving motor and controlling the rotating speed of the driving motor to be 300-700 rpm, wherein the running time of the driving motor is 1-3 h;
s2: hub bearing unit cold treatment
The temperature of the environmental bin is controlled to be 18-22 ℃ through a high-low temperature box;
stopping the testing device, and cooling the hub bearing unit to room temperature;
s3: hub bearing unit friction detection at low temperature
The temperature of the environmental bin is controlled to be between-20 ℃ and 0 ℃ through a high-low temperature box;
the controller controls the driving motor to operate according to the CLTC-P working condition, the operating time of the driving motor is 1 h-5 h, the loading device applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s4: hub bearing unit friction detection at normal temperature
The temperature of the environmental bin is controlled to be 18-22 ℃ through a high-low temperature box;
the controller controls the driving motor to operate according to the CLTC-P working condition, the operating time of the driving motor is 1 h-5 h, the loading device applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s5: hub bearing unit friction detection at high temperature
The temperature of the environmental bin is controlled to be 40-60 ℃ through a high-low temperature box;
the controller controls the driving motor to operate according to the CLTC-P working condition, the operating time of the driving motor is 1 h-5 h, the loading device applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
Preferably, the friction work of the hub bearing units under S3, S4 and S5 is calculated by a formula,
friction power: p (P) F (t)＝τ F (t)×n WB (t)×2×π
Determining friction work:
P F : friction power (W);
τ F : friction torque (Nm);
n WB : hub bearing rotation speed (rpm)
W F : friction work (Wh);
preferably, the average torque loss of the hub bearing under S3, S4, S5 is calculated by the formula,
determining the total distance:
determining an average torque loss:
d: total distance (m);
r dyn : dynamic rolling radius (mm);
The invention has the remarkable technical effects due to the adoption of the technical scheme:
the hub bearing unit is tested by the testing device to obtain a result, and the device and the method can conveniently and continuously test and quantify the hub bearing unit, thereby being beneficial to the research and development of the low-torque hub bearing unit.
By developing the low-torque hub bearing unit, the oil consumption and the energy consumption of the automobile using the component are reduced, and the driving mileage is increased.
Drawings
FIG. 1 is a schematic view of a first position of a testing device according to the present invention.
FIG. 2 is a schematic diagram of the second position of the testing device according to the present invention.
The names of the parts indicated by the numerical reference numerals in the above drawings are as follows:
10-drive motor
11-rotation speed sensor
12-moving assembly, 121-driving disk, 122-first driving shaft, 123-coupling, 124-second driving shaft
13-Loading device
14-first clamp
15-hydrostatic bearing
16-second clamp
17-oil float bearing mandrel flange
18-torque sensor
19-hub bearing unit
Detailed Description
The invention is described in further detail below with reference to figures 1-2 and examples.
Example 1
The device for testing the energy consumption of the hub bearing unit under the CLTC-P working condition comprises a driving motor 10, a rotating speed sensor 11, a transmission assembly 12 and a loading device 13, wherein the driving motor 10 is used for providing power, the driving motor 10 can adjust the rotating speed according to the CLTC-P working condition, and the loading device 13 is used for applying radial load or axial load to the bearing to be tested. The driving motor 10 drives the transmission assembly 12 to rotate, and the rotation speed sensor 11 and the loading device 13 are both arranged on the transmission assembly 12. The testing device further comprises an environment bin and a high-low temperature box, the high-low temperature box is connected with the environment bin and controls the temperature in the environment bin, a first clamp 14 used for clamping one end of the bearing to be tested is installed in the environment bin, the transmission assembly 12 comprises a transmission disc 121 used for fixing the other end of the bearing to be tested, a hydrostatic bearing 15 is installed at the other end of the first clamp 14, the hydrostatic bearing 15 is used for eliminating torque generated by equipment, the hydrostatic bearing adopts a suspension type structure, the equipment torque is large, the hydrostatic bearing 15 rotates, the equipment torque is small, and the hydrostatic bearing swings. The hub bearing unit is required for installation at the test sample location. The axial force loading position is adjusted so that it is loaded at the radius of the wheel of the vehicle type for which the sample is intended. The radial force loading position is adjusted so as to load the wheel center position. And (3) inputting a CLTC-P path spectrum through test software, so that the hub bearing unit simulates the running state of the automobile in the whole automobile performance environment bin. During the test, the test sample is always loaded with a constant force value. The radial force was half the full axle weight (W/2) and the axial force was constant at 0.225kN. The high-low temperature box controls the temperature of the environmental chamber to be maintained at-10 ℃, 20 ℃, 50 ℃, respectively tests samples at-10 ℃, 20 ℃ and 50 ℃, and calculates the power consumption of each speed interval under each environmental temperature condition through test software.
The transmission assembly 12 comprises a first transmission shaft 122, a coupler 123 and a second transmission shaft 124, the output end of the driving motor 10 is connected with the first transmission shaft 122, the rotating speed sensor 11 is installed on the first transmission shaft 122, the coupler 123 is installed between the first transmission shaft 122 and the second transmission shaft 124, the transmission disc 121 is fixedly connected with the other end of the second transmission shaft 124, the transmission disc 121 and the second transmission shaft 124 are integrally formed, the loading device 13 is installed on the second transmission shaft 124 through a bearing, and the loading device 13 can radially move and axially move under the action of external force, so that the loading device 13 provides radial load and axial load.
The testing device further comprises a second clamp 16 for clamping the bearing to be tested, the second clamp 16 is a transition disc, so that the stability of the hub bearing unit between the second clamp 16 and the first clamp 14 is better, the second clamp 16 is fastened on the transmission disc 121 through bolts, and the second clamp 16 is arranged in the environment bin.
The first clamp 14 is fixedly provided with an oil floating bearing mandrel flange 17 through bolts, and the hydrostatic bearing 15 is arranged on the oil floating bearing mandrel flange 17.
The testing device further comprises a torque sensor 18, wherein the torque sensor 18 is arranged on the oil floating bearing mandrel flange 17, and the torque sensor 18 is used for detecting torque force generated by the oil floating bearing mandrel flange 17.
Example 2
Based on the energy consumption test method of the hub bearing unit under the working condition of CLTC-P,
s1: pre-run
The hub bearing unit to be tested is arranged in a hub bearing unit energy consumption testing device under the working condition based on CLTC-P;
the temperature of the environmental bin is controlled at 20 ℃ through a high-low temperature box;
starting the driving motor 10 and controlling the rotation speed thereof to be 500rpm, wherein the operation time of the driving motor 10 is 2 hours;
s2: hub bearing unit cold treatment
The temperature of the environmental bin is controlled at 20 ℃ through a high-low temperature box;
stopping the testing device, and cooling the hub bearing unit to room temperature;
s3: hub bearing unit friction detection at low temperature
The temperature of the environmental bin is controlled at-10 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 3h, and the loading device 13 applies radial load Fr to the hub bearing unit, wherein the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s4: hub bearing unit friction detection at normal temperature
The temperature of the environmental bin is controlled at 20 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 3h, and the loading device 13 applies radial load Fr to the hub bearing unit, wherein the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s5: hub bearing unit friction detection at high temperature
The temperature of the environmental bin is controlled to be 50 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 3h, and the loading device 13 applies radial load Fr to the hub bearing unit, wherein the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
The friction work of the hub bearing units under S3, S4 and S5 is calculated respectively through formulas,
friction power: p (P) F (t)＝τ F (t)×n WB (t)×2×π
Determining friction work:
P F : friction power (W);
τ F : friction torque (Nm);
n WB : hub bearing rotation speed (rpm)
W F : friction work (Wh);
the average torque loss of the hub bearing units under S3, S4 and S5 is calculated respectively through formulas,
determining the total distance:
determining an average torque loss:
d: total distance (m);
r dyn : dynamic rolling radius (mm);
Example 3
S1: pre-run
The hub bearing unit to be tested is arranged in a hub bearing unit energy consumption testing device under the working condition based on CLTC-P;
the temperature of the environmental bin is controlled to be 18 ℃ through a high-low temperature box
Starting the driving motor 10 and controlling the rotation speed thereof at 300rpm, and operating the driving motor 10 for 1h;
s2: hub bearing unit cold treatment
The temperature of the environmental bin is controlled at 18 ℃ through a high-low temperature box;
stopping the testing device, and cooling the hub bearing unit to room temperature;
s3: hub bearing unit friction detection at low temperature
The temperature of the environmental bin is controlled at-20 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 1h, and the loading device 13 applies radial load Fr to the hub bearing unit, wherein the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s4: hub bearing unit friction detection at normal temperature
The temperature of the environmental bin is controlled at 18 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 1h, and the loading device 13 applies radial load Fr to the hub bearing unit, wherein the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
S5: hub bearing unit friction detection at high temperature
The temperature of the environmental bin is controlled at 40 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 1h, and the loading device 13 applies radial load Fr to the hub bearing unit, wherein the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
Example 4
S1: pre-run
The hub bearing unit to be tested is arranged in a hub bearing unit energy consumption testing device under the working condition based on CLTC-P;
the temperature of the environmental bin is controlled at 22 ℃ through a high-low temperature box;
starting the driving motor 10 and controlling the rotation speed thereof at 700rpm, wherein the operation time of the driving motor 10 is 3 hours;
s2: hub bearing unit cold treatment
The temperature of the environmental bin is controlled at 22 ℃ through a high-low temperature box;
stopping the testing device, and cooling the hub bearing unit to room temperature;
s3: hub bearing unit friction detection at low temperature
The temperature of the environmental bin is controlled to be 0 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 5h, the loading device 13 applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s4: hub bearing unit friction detection at normal temperature
The temperature of the environmental bin is controlled at 22 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 5h, the loading device 13 applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
S5: hub bearing unit friction detection at high temperature
The temperature of the environmental bin is controlled to be 60 ℃ through a high-low temperature box;
the controller controls the driving motor 10 to operate according to the CLTC-P working condition, the operation time of the driving motor 10 is 5h, the loading device 13 applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
Claims (8)
1. The device for testing the energy consumption of the hub bearing unit under the CLTC-P working condition comprises a driving motor (10), a rotating speed sensor (11), a transmission assembly (12) and a loading device (13), wherein the loading device (13) is used for applying radial load or axial load to a bearing to be tested, the driving motor (10) drives the transmission assembly (12) to rotate, and the rotating speed sensor (11) and the loading device (13) are both arranged on the transmission assembly (12); the method is characterized in that: the device further comprises an environment bin and a high-low temperature box, wherein the high-low temperature box is connected with the environment bin and controls the internal temperature of the environment bin, a first clamp (14) used for clamping one end of a bearing to be tested is installed in the environment bin, the transmission assembly (12) comprises a transmission disc (121) used for fixing the other end of the bearing to be tested, and a hydrostatic bearing (15) is installed at the other end of the first clamp (14).
2. The energy consumption testing device for hub bearing units based on CLTC-P working conditions according to claim 1, wherein: the transmission assembly (12) comprises a first transmission shaft (122), a coupler (123) and a second transmission shaft (124), the output end of the driving motor (10) is connected with the first transmission shaft (122), the rotating speed sensor (11) is installed on the first transmission shaft (122), the coupler (123) is installed between the first transmission shaft (122) and the second transmission shaft (124), the transmission disc (121) is fixedly connected with the other end of the second transmission shaft (124), and the loading device (13) is installed on the second transmission shaft (124) through a bearing.
3. The energy consumption testing device for hub bearing units based on CLTC-P working conditions according to claim 1, wherein: the device further comprises a second clamp (16) for clamping the bearing to be tested, the second clamp (16) is fastened on the transmission disc (121) through bolts, and the second clamp (16) is arranged in the environment bin.
4. The energy consumption testing device for hub bearing units based on CLTC-P working conditions according to claim 1, wherein: the first clamp (14) is fixedly provided with an oil floating bearing mandrel flange (17) through bolts, and the hydrostatic bearing (15) is arranged on the oil floating bearing mandrel flange (17).
5. The energy consumption testing device for hub bearing units based on CLTC-P working conditions according to claim 4, wherein: the device also comprises a torque sensor (18), wherein the torque sensor (18) is arranged on the oil floating bearing mandrel flange (17).
6. The method for testing the energy consumption of the hub bearing unit based on the CLTC-P working condition is characterized by comprising the following steps of:
s1: pre-run
Installing a hub bearing unit to be tested in the energy consumption testing device for the hub bearing unit under the working condition based on the CLTC-P according to any one of claims 1 to 5;
the temperature of the environmental bin is controlled to be 18-22 ℃ through a high-low temperature box;
starting a driving motor (10) and controlling the rotating speed of the driving motor to be 300-700 rpm, wherein the running time of the driving motor (10) is 1-3 h;
s2: hub bearing unit cold treatment
The temperature of the environmental bin is controlled to be 18-22 ℃ through a high-low temperature box;
stopping the testing device, and cooling the hub bearing unit to room temperature;
s3: hub bearing unit friction detection at low temperature
The temperature of the environmental bin is controlled to be between-20 ℃ and 0 ℃ through a high-low temperature box;
the controller controls the driving motor (10) to operate according to the CLTC-P working condition, the operation time of the driving motor (10) is 1 h-5 h, the loading device (13) applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s4: hub bearing unit friction detection at normal temperature
The temperature of the environmental bin is controlled to be 18-22 ℃ through a high-low temperature box;
the controller controls the driving motor (10) to operate according to the CLTC-P working condition, the operation time of the driving motor (10) is 1 h-5 h, the loading device (13) applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; applying an axial load Fa, fa=0.05 Fr;
s5: hub bearing unit friction detection at high temperature
The temperature of the environmental bin is controlled to be 40-60 ℃ through a high-low temperature box;
the controller controls the driving motor (10) to operate according to the CLTC-P working condition, the operation time of the driving motor (10) is 1 h-5 h, the loading device (13) applies radial load Fr to the hub bearing unit, and the radial load is half of the full-load axle weight, namely Fr=w/2; an axial load Fa, fa=0.05 Fr is applied.
7. The method for testing the energy consumption of the hub bearing unit under the CLTC-P working condition according to claim 6, wherein the method comprises the following steps of: the friction work of the hub bearing units under S3, S4 and S5 is calculated respectively through formulas,
friction power: p (P) F (t)＝τ F (t)×n WB (t)×2×π
Determining friction work:
P F : friction power (W);
τ F : friction torque (Nm);
n WB : hub bearing rotation speed (rpm)
W F : friction work (wh).
8. The method for testing the energy consumption of the hub bearing unit under the CLTC-P working condition according to claim 7, wherein the method comprises the following steps: the average torque loss of the hub bearing units under S3, S4 and S5 is calculated respectively through formulas,
determining the total distance:
determining an average torque loss:
d: total distance (m);
r dyn : dynamic rolling radius (mm);
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310111221.5A CN116296380A (en) | 2023-01-30 | 2023-01-30 | Device and method for testing energy consumption of hub bearing unit based on CLTC-P working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310111221.5A CN116296380A (en) | 2023-01-30 | 2023-01-30 | Device and method for testing energy consumption of hub bearing unit based on CLTC-P working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116296380A true CN116296380A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310111221.5A Pending CN116296380A (en) | 2023-01-30 | 2023-01-30 | Device and method for testing energy consumption of hub bearing unit based on CLTC-P working condition |
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| CN (1) | CN116296380A (en) |
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- 2023-01-30 CN CN202310111221.5A patent/CN116296380A/en active Pending
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