CN109443614A - A kind of the torque converter efficiency test macro and method of automatic transmission - Google Patents
A kind of the torque converter efficiency test macro and method of automatic transmission Download PDFInfo
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- CN109443614A CN109443614A CN201811242282.0A CN201811242282A CN109443614A CN 109443614 A CN109443614 A CN 109443614A CN 201811242282 A CN201811242282 A CN 201811242282A CN 109443614 A CN109443614 A CN 109443614A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/26—Devices for measuring efficiency, i.e. the ratio of power output to power input
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
Abstract
The present invention relates to a kind of torque converter efficiency test macros of automatic transmission vehicle, comprising: speed changer, oil cooler, rack temperature control device, oil sump；One automatic gear-box control unit, is electrically connected with speed changer, and is electrically connected with the automobile engine calibration software being located in exploitation computer；One fluid torque-converter is connected on speed changer, and is cooperatively connected with the output end of a driving motor；One output end of one left load motor and speed changer is cooperatively connected；Another output end of one right load motor and speed changer is cooperatively connected；One data collecting card is electrically connected with the speed probe and torque sensor being located on driving motor, left load motor and right load motor respectively, is also electrically connected with the temperature sensor being located on oil sump；One rack controls computer, is electrically connected with data collecting card.The present invention also provides a kind of torque converter efficiency test methods of automatic transmission vehicle, can test torque converter efficiency on general three motor experimental bench of speed changer.
Description
Technical field
The invention belongs to automatic gearboxes, and in particular to a kind of torque converter efficiency test of automatic transmission
System and method.
Background technique
With the development of the automobile industry with progress, consumer is to automatic transmission vehicle, the especially demand of AT vehicle
It is stepped up.Fluid torque-converter has emphatically power transmitting, NVH and complete-vehicle oil consumption as one of AT speed changer critical component
It influences.Under the increasingly harsh overall background of fuel economy regulation, major main engine plants, components supplying quotient and research unit are to fluid power
The research of torque converter is more paid attention to and is goed deep into.
Torque converter efficiency testboard bay need to include power load with power measurement arrangement, torque and rotating speed measuring sensor,
Temperature sensor, pressure sensor, flow sensor, transmission oil are for giving cooling system etc..In order to ensure fluid torque-converter
Efficiency test boundary and vehicle running boundary are as consistent as possible, also need to configure corresponding bench test connection with auxiliary device to control
The parameters such as the disengaging oil temperature of fluid torque-converter processed, pressure, flow.Auxiliary device increases the complexity for both increasing test-bed
Degree also increases experimentation cost, realizes that torque converter efficiency test boundary and the consistent difficulty of vehicle running boundary are big；And
And since fluid torque-converter axial dimension is short, common motor test rack is unable to satisfy test requirements document, therefore, need to build special
Fluid torque-converter monomer assays platform.
" a kind of fluid torque-converter test macro " disclosed in CN 207181032U, including main electric dynamometer, hydraulic moment changeable
Device, gearbox, auxiliary electric dynamometer and control unit；The output end of main electric dynamometer and the input terminal of fluid torque-converter pass through
Transmission shaft is connected, and the output end of fluid torque-converter is connected by gearbox with the output end of auxiliary electric dynamometer；Main electric power measurement of power
Transmission shaft between the output end of machine and the input terminal of fluid torque-converter is equipped with the first speed probe and the first torquemeter, liquid
Transmission shaft between the output end and gearbox of power torque-converters is equipped with the second speed probe and the second torquemeter；Main electric power is surveyed
Function machine, auxiliary electric dynamometer, the first speed probe, the first torquemeter, the second speed probe and the second torquemeter with control
Unit connection processed.By main electric dynamometer simulated engine operating condition, and then fluid torque-converter actual condition is simulated, it is accurate to realize
Load, control precision is high, improves test efficiency, shortens test period.
CN 104656464A discloses " a kind of fluid torque-converter test control system ", including master controller and main control
The detection device and power module that device input terminal connects, detection device include torque sensor one, temperature sensor one and pressure
Sensor one and torque sensor two, flow detector, temperature sensor two and pressure sensor two, torque sensor one,
Temperature sensor one and pressure sensor one are installed on face of fluid torque converter axis, torque sensor two, flow detector,
Temperature sensor two and pressure sensor two are installed on transformer turbine axis；Master controller output end and frequency converter phase
It connects, frequency converter connects with driving motor and load motor；Master controller is by Ethernet and industrial switch and makees station communication link
It connects, active station connects printer.It can driving motor and load motor in intelligent control test macro, control reliability and
Job stability is high.
Unquestionably, the above-mentioned prior art is all a kind of good try of technical field.
Summary of the invention
It, can be the object of the present invention is to provide a kind of torque converter efficiency test macro of automatic transmission vehicle
On the basis of general three motor experimental bench of speed changer, without increasing dedicated connection and auxiliary device, fluid torque-converter is carried out
Efficiency test can be realized the transmission assembly efficiency test that fluid torque-converter unblocks lock status, and then obtain fluid torque-converter
Efficiency.
The present invention also provides a kind of torque converter efficiency test methods of automatic transmission vehicle, it can be in traditional change
Torque converter efficiency test is carried out on fast three motor experimental bench of device, and makes fluid torque-converter running boundary and vehicle running boundary
It is consistent.
Traditional three electromechanical testing platform of speed changer, a kind of environment-friendly speed transmission test device as disclosed in CN101246081
And method, experimental rig use an alternating-current variable frequency motor simulated engine, connect speed changer after exporting raising speed, it is another to use two
Load of the alternating-current variable frequency motor as speed changer, the electric energy that load motor generates are made by shared DC bus for driving motor
With at the same time, PC machine carries out revolving speed control to driving motor, carries out moment of torsion control to load motor.
Basic principle of the invention is as follows:
Torque converter efficiency η _ tc=P_w/P_b=T_w × N_w/ (T_b × N_b) × 100%.
In formula: P_w is transformer turbine output power, unit kW；
P_b is face of fluid torque converter input power, unit kW；
N_w is transformer turbine revolving speed, unit r/min；
T_b is face of fluid torque converter input torque, unit Nm；
N_b is face of fluid torque converter revolving speed, unit r/min.
Transmission gear transmission efficiency η _ gear=P_out/P_g_in=(T_l × N_l+T_r × N_r)/(T_g_in ×
N_g_in) × 100%.
In formula: P_out is transmission assembly output power, unit kW；
P_g_in is that transmission gear inputs shaft power, unit kW；
T_l is left load motor torque, unit Nm；
N_l is left load motor revolving speed, unit r/min；
T_r is right load motor torque, unit Nm；
N_r is right load motor revolving speed, unit r/min；
T_g_in is transmission gear input shaft torque, unit Nm；
N_g_in: transmission gear input shaft rotating speed, unit r/min.
Transmission assembly efficiency eta _ total=P_out/P_in=(T_l × N_l+T_r × N_r)/(T_in × N_in) ×
100%.
In formula: P_out is transmission assembly output power, unit kW；
P_in is transmission assembly input power, unit kW；
T_l is left load motor torque, unit Nm；
N_l is left load motor revolving speed, unit r/min；
T_r is right load motor torque, unit Nm；
N_r is right load motor revolving speed, unit r/min；
T_in is transmission assembly input torque, unit Nm；
N_in is transmission assembly input speed, unit r/min.
A kind of torque converter efficiency test macro of automatic transmission vehicle of the present invention, comprising: speed changer；
One oil cooler connect with the speed changer and communicates, and connect with a rack temperature control device；
One oil sump is connected to below the speed changer；It is characterized in that:
One automatic gear-box control unit, is electrically connected with the speed changer, and sends out with the automobile being located in exploitation computer
The electrical connection of motivation calibration software；
One fluid torque-converter is connected on the speed changer, and is cooperatively connected with the output end of a driving motor；
One output end of one left load motor and the speed changer is cooperatively connected；
Another output end of one right load motor and the speed changer is cooperatively connected；
One data collecting card, respectively with the revolution speed sensing that is located on driving motor, left load motor and right load motor
Device and torque sensor electrical connection, are also electrically connected with the temperature sensor being located on the oil sump；
One rack control computer, be electrically connected with the data collecting card, and with the driving motor, left load motor and
Right load motor electrical connection, is also electrically connected with the rack temperature control device.
Further, driving motor speed probe and driving motor torque sensing are equipped in the output end of the driving motor
Device is equipped with left load motor speed probe and left load motor torque sensor in the output end of the left load motor,
The output end of the right load motor is equipped with right load motor speed probe and right load motor torque sensor；The driving
The left load motor speed probe of motor speed sensor, driving motor torque sensor, left load motor torque sensor, the right side
Load motor speed probe and right load motor torque sensor are electrically connected with the data collecting card respectively.
A kind of torque converter efficiency test method of automatic transmission of the present invention, comprising the following steps:
Step 1: test-bed arrangement and debugging；In three motor benches (the torque converter efficiency test macro)
Arrangement includes the temperature sensor of fluid torque-converter to be measured and its matched speed changer, oil cooler, oil sump and lubricating oil, and
It connect the water route of oil cooler with rack temperature control device；Data collecting card respectively be located at driving motor, left load motor and the right side
Speed probe and torque sensor electrical connection on load motor, are also electrically connected with the temperature sensor being located on the oil sump
It connects, data collecting card is electrically connected with rack control computer, and all devices complete rack debugging after deploying；
Step 2: the locking of automatic gear-box control unit lock-up clutch is write with a brush dipped in Chinese ink with Shifting；Automatic gear-box control is single
Member is electrically connected with the automobile engine calibration software being located in exploitation computer, and automobile engine calibration software changes locking clutch
Device unblocks strategy, its various gears within the scope of measurement condition is made to keep blocking；It changes under speed changer manual mode
Shifting is brushed after the completion of strategy change into automatic gear-box control unit；
Step 3: gear-driven efficiency test；It (can also at 80 DEG C by the lubricating oil temperature t control in the oil sump of speed changer
To set according to actual needs), the manual gear pattern M gear of automatic transmission is fixed on 1 gear；Computer is controlled by rack to set respectively
The revolving speed and torque of centrally-mounted driving, left load motor and right load motor；Gear is successively increased to top gear, tests different gears
The gear-driven efficiency of speed changer under position, records the revolving speed and torque of left load motor, right load motor；
Transmission gear transmission efficiency η _ gear=(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/(N
[i] × T [j]) × 100%；
Step 4: automatic gear-box control unit lock-up clutch unlock strategy is write with a brush dipped in Chinese ink；The connection of automatic gear-box control unit
The automobile engine calibration software being located in exploitation computer, change lock-up clutch unblock strategy, make it in measurement condition model
It encloses interior various gears and keeps unlocked state, brush after the completion of strategy change into automatic gear-box control unit；
Step 5: the transmission efficiency test with fluid torque-converter；Lubricating oil temperature t control in the oil sump of speed changer
80 DEG C (can also set according to actual needs), the manual gear pattern M gear of automatic transmission is fixed on 1 gear；Pass through rack control
The revolving speed and torque of left load motor, right load motor is respectively set in computer processed；Test the efficiency of the speed changer under different gears；
Transmission efficiency η _ total_unlock=(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/(N '
[i, j] × T ' [i, j]) × 100%；
Step 6: torque converter efficiency calculates；The efficiency data of step 3 and step 5 is analyzed, available whirlpool
When wheel/pump impeller speed ratio e=N_w [i, j]/N ' [i, j],
Torque converter efficiency η _ tc=η _ total_unlock/ η _ gear=(N_l [i, j] × T_l [i, j]+N_r [i,
J] × T_r [i, j])/(N ' [i, j] × T ' [i, j]) × 100%/[(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i,
J])/(N [i] × T [j]) × 100%]=(N [i] × T [j])/(N ' [i, j] × T ' [i, j]) × 100%.
In actual operating mode, the pump impeller of fluid torque-converter connects engine output shaft, i.e. pump impeller revolving speed N_b with start
Machine revolving speed N_eng is consistent, equal to the input speed N_in of transmission assembly；Impeller torque T_b and engine torque T_eng mono-
It causes, equal to the input torque T_in of transmission assembly.
In actual operating mode, the turbine of fluid torque-converter connects transmission gear input shaft, i.e. secondary speed N_w with
Transmission gear input shaft rotating speed N_g_in is consistent；Turbine torque T_w is consistent with transmission gear input shaft torque T_g_in.
When lock-up clutch locking, fluid torque-converter does not work, η _ total_lock=η _ gear_lock, N_w_
Lock=N_g_in_lock=N_b_lock=N_in_lock, T_w_lock=T_g_in_lock=T_b_lock=T_in_
lock。
When lock-up clutch unlock, fluid torque-converter work, η _ total_unlock=η _ tc_unlock × η _
gear_unlock。
Under the conditions of fluid torque-converter is not run with running two kinds, if speed changer operation oil temperature, gear, output revolving speed, torsion
Square is all the same, i.e., when transmission gear transmission running boundary is consistent with operating condition, η _ gear_lock=η _ gear_unlock,
Available torque converter efficiency: η _ tc_unlock=η _ total_unlock/ η _ gear_unlock=η _ total_
Unlock/ η _ gear_lock=η _ total_unlock/ η _ total_lock=[(T_l_unlock × N_l_unlock+T_
r_unlock×N_r_unlock)/(T_in_unlock×N_in_unlock)]/[(T_l_lock×N_l_lock+T_r_
Lock × N_r_lock)/(T_in_lock × N_in_lock)] × 100%.
Wherein, T_l_unlock, N_l_unlock, T_r_unlock, N_r_unlock, T_in_unlock, N_in_
It is (total that unlock, T_l_lock, N_l_lock, T_r_lock, N_r_lock, T_in_lock, N_in_lock belong to speed changer
At) output and input parameter, convenient for arrangement revolving speed and torque sensor directly tested.
Torque converter efficiency analysis；Since fluid torque-converter has bending moment and the two kinds of working conditions coupled, need to distinguish
The torque converter efficiency that step 6 is calculated carries out quadratic polynomial fitting and linear fit；Secondary speed is by 0 to coupling
In the working range of chalaza, the efficiency of fluid torque-converter is η _ tc_1=a1 × e2+b1×e+c1；After Coupling point, by liquid
Mechanical couple work, efficiency are η _ tc_2=b2 × e+c2.
The beneficial effects of the present invention are: due to using former vehicle transmission oil oil cooler, transmission oil circuit with
Whole vehicle state is consistent, and eliminates the longer transmission oil circulation line of common test rack and circulating pump system, from
And it ensure that the consistency of speed changer lubricating loop Yu actual motion boundary；Due to increasing for controlling fluid torque-converter work
The INCA software and exploitation computer of state and shift of transmission strategy, can neatly change lock-up clutch according to testing requirement
State and Shifting realize the switching and speed changer lifting gear control of fluid torque-converter working condition；Liquid without customization
Power torque-converters monomer efficiency test rack can carry out torque converter efficiency examination on three electromechanical testing platform of traditional power assembly
It tests；The change controlled by TCU realizes that fluid torque-converter unblocks the transmission assembly efficiency test of lock status, and then obtains liquid
Power torque converter.And test boundary can be consistent with vehicle actual operating mode, avoid the survey of fluid torque-converter monomer
The variation that boundary is tested when examination has an impact efficiency.
This method is simple, at low cost, and operation is reliable, and the tooling sample of fluid torque-converter Special test platform can be reduced after use
Part prepares and rack debugging cycle, and the torque converter efficiency in available wide speed ratio (pump impeller/turbine) range, covering liquid
Power torque-converters bending moment and coupling different working condition.This method is suitable for the efficiency test of different model fluid torque-converter and divides
Analysis.
Detailed description of the invention
Fig. 1 is the torque converter efficiency test macro schematic diagram of automatic transmission；
Fig. 2 is fluid torque-converter analysis efficiency and fluid torque-converter monomer testing efficiency contrast schematic diagram；
Fig. 3 is fluid torque-converter analysis efficiency and fluid torque-converter monomer testing efficiency relative different schematic diagram.
In figure: 1-speed changer, 2-oil coolers, 3-automatic gear-box control units (TCU), 4-oil sumps, 5-fluid power
Torque-converters, 6-driving motors, 7-left load motors, 8-right load motors, 9-automobile engine calibration softwares (INCA),
10-exploitation computers, 11-rack temperature control devices, 12-temperature sensors, 13-driving motor speed probes, 14-drivings
Motor torque sensor, 15-left load motor speed probes, 16-left load motor torque sensors, 17-right load electricity
Machine speed probe, 18-right load motor torque sensors, 19-data collecting cards, 20-racks control computer.
Specific embodiment
The present invention is further described with reference to the accompanying drawings of the specification:
Referring to Fig. 1, shown in a kind of torque converter efficiency test macro of automatic transmission vehicle, comprising: speed changer
1；
One oil cooler 2 connect with the speed changer 1 and communicates, and connect with a rack temperature control device 11；
One oil sump 4 is connected to below the speed changer 1；It is characterized in that:
One automatic gear-box control unit 3 is electrically connected with the speed changer 1, and be located at exploitation computer 10 in vapour
Car engine calibration software 9 is electrically connected；
One fluid torque-converter 5 is connected on the speed changer 1, and is cooperatively connected with the output end of a driving motor 6；
One output end of one left load motor 7 and the speed changer 1 is cooperatively connected；
Another output end of one right load motor 8 and the speed changer 1 is cooperatively connected；
One data collecting card 19, respectively with the revolving speed that is located on driving motor 6, left load motor 7 and right load motor 8
Sensor and torque sensor electrical connection, are also electrically connected with the temperature sensor 12 being located on the oil sump 4；
One rack control computer 20, be electrically connected with the data collecting card 19, and with the driving motor 6, left load
Motor 7 and right load motor 8 are electrically connected, and are also electrically connected with the rack temperature control device 11.
Driving motor speed probe 13 and driving motor torque sensor are equipped in the output end of the driving motor 6
14, left load motor speed probe 15 and left load motor torque sensor are equipped in the output end of the left load motor 7
16, right load motor speed probe 17 and right load motor torque sensor are equipped in the output end of the right load motor 8
18；The driving motor speed probe 13, the left load motor speed probe 15 of driving motor torque sensor 14, left load
Motor torque sensor 16, right load motor speed probe 17 and right load motor torque sensor 18 respectively with the data
Capture card 19 is electrically connected.
A kind of torque converter efficiency test method of automatic transmission of the present invention, comprising the following steps:
Step 1: test-bed arrangement and debugging；In three motor benches (i.e. above-mentioned torque converter efficiency test macro)
Upper arrangement includes the temperature biography of fluid torque-converter 5 to be measured and its matched speed changer 1, oil cooler 2, oil sump 4 and lubricating oil
Sensor 12, and it connect the water route of oil cooler 2 with rack temperature control device 11；Data collecting card 19 respectively be located at driving motor 6,
Left load motor 7 and the electrical connection of speed probe on right load motor 8 and torque sensor, also be located at the oil sump 4
On temperature sensor 12 be electrically connected, data collecting card 19 and rack control computer 20 and are electrically connected, so as to by collected revolving speed,
Torque and temperature signal are transmitted to rack control computer, and all devices complete rack debugging after deploying；
Step 2: automatic gear-box control unit (abbreviation TCU) lock-up clutch locking is write with a brush dipped in Chinese ink with Shifting；It is automatic to become
Fast case control unit 3 is electrically connected with the automobile engine calibration software 9 being located in exploitation computer 10, automobile engine calibration software
(abbreviation INCA), change lock-up clutch unblock strategy, its various gears within the scope of measurement condition is made to keep blocking；
The Shifting under speed changer manual mode is changed, making it, various gears do not keep off by automatic lifting within the scope of measurement condition；Strategy
It brushes after the completion of change into automatic gear-box control unit 3；
Step 3: gear-driven efficiency test；By in the oil sump 4 of speed changer 1 lubricating oil temperature t control 80 DEG C (
Can set according to actual needs), the manual gear pattern M gear of automatic transmission is fixed on 1 gear；Computer 20 is controlled by rack to divide
Not She Zhi driving motor 6, left load motor 7 and right load motor 8 revolving speed and torque；The revolving speed of driving motor 6 is set respectively
Be set to N [i]: N_1, N_2 ..., N_i ..., N_m, 6 torque of Test driver motor is respectively T [j]: T_1, T_2 ..., T_j ...,
When T_n, left load motor 7, right load motor 8 revolving speed be N_l [i, j], N_r [i, j], left load motor 7, right load motor
8 torque is T_l [i, j], T_r [i, j]；N_1=1000r/min, N_m=5500r/min, T_1=10Nm, T_n=
250Nm, N_1 are stepped up to N_m, and T_1 to T_n is stepped up, 1≤i≤m, 1≤j≤n, usual m=5, n=12；Gear
It successively increases to top gear, tests the gear-driven efficiency of the speed changer 1 under different gears, record left load motor, right load
The revolving speed and torque of motor；
Transmission gear transmission efficiency η _ gear=(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/(N
[i] × T [j]) × 100%；
Step 4: automatic gear-box control unit lock-up clutch unlock strategy is write with a brush dipped in Chinese ink；Automatic gear-box control unit 3 connects
The automobile engine calibration software 9 being connected in exploitation computer 10, change lock-up clutch unblock strategy, make it in test work
Various gears keep unlocked state within the scope of condition, brush after the completion of strategy change into automatic gear-box control unit 3；
Step 5: the transmission efficiency test with fluid torque-converter；Lubricating oil temperature t control in the oil sump 4 of speed changer 1
For system 80 DEG C (can also set according to actual needs), the manual gear pattern M gear of automatic transmission is fixed on 1 gear；Pass through rack
The revolving speed and torque of left load motor 7, right load motor 8 is respectively set in control computer 20；By left load motor 7, right load electricity
The revolving speed of machine 8 is respectively set to N_l [i, j], N_r [i, j], left load motor 7, right load motor 8 load torque set respectively
When being set to T_l [i, j] and T_r [i, j], the revolving speed N ' [i, j] and torque T ' [i, j] and hydraulic moment changeable of driving motor 6 are recorded
The secondary speed N_w [i, j] of device 5；Gear is successively increased to top gear, the revolving speed and torque of left load motor, right load motor
Control keeps consistent with step 3, tests the efficiency of the speed changer 1 under different gears, controls the record driving of computer 20 by rack
The revolving speed and torque of motor 6 record the secondary speed of fluid torque-converter 5 in automatic gear-box control unit by exploitation computer 10
N_w[i,j]；Left load motor, right load motor revolving speed be N_l [i, j], N_r [i, j], left load motor, right load motor
Torque be T_l [i, j], T_r [i, j] when,
Transmission efficiency η _ total_unlock=(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/(N '
[i, j] × T ' [i, j]) × 100%；
Step 6: torque converter efficiency calculates；The efficiency data of step 3 and step 5 is analyzed, available whirlpool
When wheel/pump impeller speed ratio e=N_w [i, j]/N ' [i, j],
Torque converter efficiency η _ tc=η _ total_unlock/ η _ gear=(N_l [i, j] × T_l [i, j]+N_r [i,
J] × T_r [i, j])/(N ' [i, j] × T ' [i, j]) × 100%/[(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i,
J])/(N [i] × T [j]) × 100%]=(N [i] × T [j])/(N ' [i, j] × T ' [i, j]) × 100%；
Torque converter efficiency analysis；Since fluid torque-converter 5 has bending moment and the two kinds of working conditions coupled, need to distinguish
The torque converter efficiency point obtained to step 6 carries out quadratic polynomial fitting and linear fit；Secondary speed is by 0 to coupling
In the working range of point, the efficiency of fluid torque-converter 5 is η _ tc_1=-1.1073 × e2+1.8918×e+0.0035；It is coupling
It after point, works by fluid coupling, efficiency is η _ tc_2=1.028 × e-0.028.
Based on obtained torque converter efficiency of the invention compared with dedicated monomer assays bench test results, referring to such as figure
2, Fig. 3；Torque converter efficiency that the present invention analyzes and the relative different of monomer assays rack efficiency by inputoutput test substantially ±
Within 3%, the relative different of operating condition ratio coverage 0.5≤e≤0.9 is being commonly used within ± 1%.Test macro letter of the invention
Easily, test method simple possible, torque converter efficiency analysis precision are high.
The primary symbols explanation that the present invention uses:
AT:Automatic Transmission automatic transmission.
NVH:Noise Vibration and Harshness noise, vibration and injustice are pliable.
TCU:Transmission Control Unit gear box control unit.
INCA: the automobile engine calibration software of German Yi Techi company exploitation.
T: speed changer oil sump oil temperature, unit DEG C.
M: the manual gear pattern of automatic transmission.
N: driving motor revolving speed when hydraulic torque converter lockout, unit r/min.
N_l: left load motor revolving speed, unit r/min.
N_r: right load motor revolving speed, unit r/min.
N_w: transformer turbine revolving speed, unit r/min.
N_b: face of fluid torque converter revolving speed, unit r/min.
N_g_in: transmission gear input shaft rotating speed, unit r/min.
N_in: transmission assembly input speed, unit r/min.
N_eng: engine exports revolving speed, unit r/min.
N ': driving motor revolving speed when fluid torque-converter unlocks, unit r/min.
N_l_unlock: the left load motor revolving speed tested under lock-up clutch unlocked state, unit r/min.
N_r_unlock: the right load motor revolving speed tested under lock-up clutch unlocked state, unit r/min.
N_in_unlock: the transmission assembly input speed tested under lock-up clutch unlocked state, unit r/min.
N_l_lock: the left load motor revolving speed tested under lock-up clutch blocking, unit r/min.
N_r_lock: the right load motor revolving speed tested under lock-up clutch blocking, unit r/min.
N_in_lock: the transmission assembly input speed tested under lock-up clutch blocking, unit r/min.
T_w: transformer turbine output torque, unit Nm.
T_b: face of fluid torque converter input torque, unit Nm.
T_g_in: transmission gear input shaft torque, unit Nm.
T_in: transmission assembly input torque, unit Nm.
T_eng: engine output torque, unit Nm.
T: driving motor torque when hydraulic torque converter lockout, unit Nm.
T_l: left load motor torque, unit Nm.
T_r: right load motor torque, unit Nm.
T ': driving motor torque when fluid torque-converter unlocks, unit Nm.
T_l_unlock: the left load motor torque tested under lock-up clutch unlocked state, unit Nm.
T_r_unlock: the right load motor torque tested under lock-up clutch unlocked state, unit Nm.
T_in_unlock: the transmission assembly input torque tested under lock-up clutch unlocked state, unit Nm.
T_l_lock: the left load motor torque tested under lock-up clutch blocking, unit Nm.
T_r_lock: the right load motor torque tested under lock-up clutch blocking, unit Nm.
T_in_lock: the transmission assembly input torque tested under lock-up clutch blocking, unit Nm.
E: the rotating ratio of transformer turbine and pump impeller.
η _ gear: transmission gear transmission efficiency.
η _ total: transmission assembly efficiency.
η _ tc: torque converter efficiency.
η _ tc_1: secondary speed is by 0 to Coupling point working range, the efficiency of fluid torque-converter.
η _ tc_2: in fluid coupling working range, the efficiency of fluid torque-converter.
P_w: transformer turbine output power, unit kW.
P_b: face of fluid torque converter input power, unit kW.
P_out: transmission assembly output power, unit kW.
P_g_in: transmission gear inputs shaft power, unit kW.
P_in: transmission assembly input power, unit kW.
A1: secondary speed is by 0 to Coupling point working range, torque converter efficiency quadratic polynomial is fitted secondary
Term coefficient.
B1: secondary speed is by 0 to Coupling point working range, torque converter efficiency quadratic polynomial is fitted primary
Term coefficient.
C1: secondary speed is by the constant that in 0 to Coupling point working range, torque converter efficiency quadratic polynomial is fitted
Term coefficient.
B2: in fluid coupling working range, the Monomial coefficient of torque converter efficiency linear fit.
C2: in fluid coupling working range, the constant term coefficient of torque converter efficiency linear fit.
Claims (3)
1. a kind of torque converter efficiency test macro of automatic transmission vehicle, comprising:
Speed changer (1)；
One oil cooler (2) connect with the speed changer (1) and communicates, and connect with a rack temperature control device (11)；
One oil sump (4) is connected to below the speed changer (1)；It is characterized in that:
One automatic gear-box control unit (3), is electrically connected with the speed changer (1), and develops in computer (10) with being located at
Automobile engine calibration software (9) electrical connection；
One fluid torque-converter (5) is connected on the speed changer (1), and is cooperatively connected with the output end of a driving motor (6)；
One output end of one left load motor (7) and the speed changer (1) is cooperatively connected；
Another output end of one right load motor (8) and the speed changer (1) is cooperatively connected；
One data collecting card (19), respectively be located on driving motor (6), left load motor (7) and right load motor (8)
Speed probe and torque sensor electrical connection, are also electrically connected with the temperature sensor (12) being located on the oil sump (4)；
One rack controls computer (20), is electrically connected with the data collecting card (19), and negative with the driving motor (6), a left side
Motor (7) and right load motor (8) electrical connection are carried, are also electrically connected with the rack temperature control device (11).
2. the torque converter efficiency test macro of automatic transmission vehicle according to claim 1, it is characterized in that: in institute
The output end for stating driving motor (6) is equipped with driving motor speed probe (13) and driving motor torque sensor (14), in institute
The output end for stating left load motor (7) is equipped with left load motor speed probe (15) and left load motor torque sensor
(16), right load motor speed probe (17) and right load motor torque are equipped in the output end of the right load motor (8)
Sensor (18)；The driving motor speed probe (13), the left load motor revolving speed of driving motor torque sensor (14) pass
Sensor (15), left load motor torque sensor (16), right load motor speed probe (17) and right load motor torque pass
Sensor (18) is electrically connected with the data collecting card (19) respectively.
3. a kind of torque converter efficiency test method of automatic transmission, comprising the following steps:
Step 1: test-bed arrangement and debugging；In three motor benches arrangement include fluid torque-converter to be measured (5) and its
The temperature sensor (12) of speed changer (1), oil cooler (2), oil sump (4) and the lubricating oil matched, and make the water route of oil cooler (2)
It is connect with rack temperature control device (11)；Data collecting card (19) respectively be located at driving motor (6), left load motor (7) and the right side
Speed probe on load motor (8) and torque sensor electrical connection, also with the temperature sensing that is located on the oil sump (4)
Device (12) electrical connection, data collecting card (19) are electrically connected with rack control computer (20), and all devices complete platform after deploying
Frame debugging；
Step 2: the locking of automatic gear-box control unit lock-up clutch is write with a brush dipped in Chinese ink with Shifting；Automatic gear-box control unit
(3) it is electrically connected with the automobile engine calibration software (9) being located in exploitation computer (10), automobile engine calibration software, change
Lock-up clutch unblocks strategy, its various gears within the scope of measurement condition is made to keep blocking；It is manual to change speed changer
Shifting under mode is brushed after the completion of strategy change into automatic gear-box control unit (3)；
Step 3: gear-driven efficiency test；By in the oil sump (4) of speed changer (1) lubricating oil temperature t control 80 DEG C (
Can set according to actual needs), the manual gear pattern M gear of automatic transmission is fixed on 1 gear；Computer (20) are controlled by rack
The revolving speed and torque of driving motor (6), left load motor (7) and right load motor (8) is respectively set；Gear is successively increased to most
High gear tests the gear-driven efficiency of the speed changer (1) under different gears, records the revolving speed of left load motor, right load motor
And torque；
Transmission gear transmission efficiency η _ gear=(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/(N [i] ×
T [j]) × 100%；
Step 4: automatic gear-box control unit lock-up clutch unlock strategy is write with a brush dipped in Chinese ink；Automatic gear-box control unit (3) connection
The automobile engine calibration software (9) being located in exploitation computer (10), change lock-up clutch unblock strategy, are testing it
Various gears keep unlocked state in condition range, brush after the completion of strategy change into automatic gear-box control unit (3)；
Step 5: the transmission efficiency test with fluid torque-converter；Lubricating oil temperature t control in the oil sump (4) of speed changer (1)
For system 80 DEG C (can also set according to actual needs), the manual gear pattern M gear of automatic transmission is fixed on 1 gear；Pass through rack
The revolving speed and torque of left load motor (7), right load motor (8) is respectively set in control computer (20)；It tests under different gears
The efficiency of speed changer (1)；
Transmission efficiency η _ total_unlock=(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/(N ' [i,
J] × T ' [i, j]) × 100%；
Step 6: torque converter efficiency calculates；The efficiency data of step 3 and step 5 is analyzed, available turbine/pump
When taking turns speed ratio e=N_w [i, j]/N ' [i, j],
Torque converter efficiency η _ tc=η _ total_unlock/ η _ gear=(N_l [i, j] × T_l [i, j]+N_r [i, j] ×
T_r [i, j])/(N ' [i, j] × T ' [i, j]) × 100%/[(N_l [i, j] × T_l [i, j]+N_r [i, j] × T_r [i, j])/
(N [i] × T [j]) × 100%]=(N [i] × T [j])/(N ' [i, j] × T ' [i, j]) × 100%.
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| CN115541286A (en) * | 2022-12-05 | 2022-12-30 | 江苏恒亮离心机制造有限公司 | Runner torsional force detection device of three-phase horizontal centrifuge |
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| CN115541286A (en) * | 2022-12-05 | 2022-12-30 | 江苏恒亮离心机制造有限公司 | Runner torsional force detection device of three-phase horizontal centrifuge |
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Application publication date: 20190308 |