CN106226083B - Engine test dynamic analog dynamometer machine and its road resistance analogy method - Google Patents
Engine test dynamic analog dynamometer machine and its road resistance analogy method Download PDFInfo
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- CN106226083B CN106226083B CN201610665262.9A CN201610665262A CN106226083B CN 106226083 B CN106226083 B CN 106226083B CN 201610665262 A CN201610665262 A CN 201610665262A CN 106226083 B CN106226083 B CN 106226083B
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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
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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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
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
- G01L3/242—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying torque and velocity
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses a kind of engine test dynamic analog dynamometer machines, including pedestal and the first inertial flywheel bearing support being fixedly connected on pedestal, second inertial flywheel bearing support, first motor bearing support and the support of the second motor bearings, flywheel shaft is installed in first inertial flywheel bearing support and the second inertial flywheel bearing support, inertial flywheel is connected on flywheel shaft, it is provided with dynamometer machine motor between first motor bearing support and the support of the second motor bearings, the both ends output shaft of dynamometer machine motor is separately mounted in first motor bearing support and the support of the second motor bearings, the end of flywheel shaft is connected with encoder, the force snesor measured to torque is provided on the shell of dynamometer machine motor；The invention also discloses a kind of road resistance analogy methods of engine test dynamic analog dynamometer machine.Reasonable design of the present invention realizes convenient and at low cost, complete function, and functional reliability and stability are high, highly practical, convenient for promoting the use of.
Description
Technical field
The invention belongs to engine test technical fields, and in particular to a kind of engine test dynamic analog dynamometer machine and
Its road resistance analogy method.
Background technology
Dynamometer machine is a kind of device for measuring the parameters such as the torque of engine, motor etc., rotating speed, is that engine is opened
Essential testing equipment in hair.Traditional dynamometer machine is used only for carrying out the measurement of the general parameters such as torque, rotating speed, can only
The parameter of test engine itself.With the development of technology and to shorten the development cycle demand, need on rack to starting
Machine wants matched vehicle (motorcycle, automobile) performance (speed, accelerating ability etc.) to be simulated, due to traditional dynamometer machine without
Method accurate simulation vehicle inertia on rack, so traditional dynamometer machine cannot be satisfied this requirement.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of structure letter
List, reasonable design, realize convenient and at low cost, complete function, functional reliability and stability it is high, it is highly practical, be convenient for popularization
The engine test used dynamic analog dynamometer machine.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of engine test is surveyed with dynamic analog
Work(machine, it is characterised in that：Fly including pedestal and the first inertial flywheel bearing support being fixedly connected on pedestal, the second inertia
Wheel bearing support, first motor bearing support and the support of the second motor bearings, the first inertial flywheel bearing support and second
Flywheel shaft is installed in inertial flywheel bearing support, is located at the first inertial flywheel bearing support and the second inertial flywheel bearing
Inertial flywheel is connected on one section of flywheel shaft between support, the first motor bearing support and the second motor bearings support it
Between be provided with dynamometer machine motor, the both ends output shaft of the dynamometer machine motor is separately mounted to first motor bearing support and second
In motor bearings support, output shaft of the dynamometer machine motor close to the inertial flywheel side by flywheel shaft shaft coupling and flies
Axis connection is taken turns, the dynamometer machine motor is connected with dynamometer machine main spindle coupling on the output shaft far from the inertial flywheel side,
The end of the flywheel shaft is connected with the encoder measured for the rotating speed to flywheel shaft, the shell of the dynamometer machine motor
On be provided with that one end is fixedly connected with the shell of dynamometer machine motor, the other end is fixedly connected with pedestal and for dynamometer machine motor
The force snesor that measures of torque.
Above-mentioned engine test dynamic analog dynamometer machine, it is characterised in that：The inertial flywheel is monoblock type inertia
Flywheel, the monoblock type inertial flywheel include discoidal integral flywheel ontology and are arranged at the center of integral flywheel ontology
Integral flywheel mounting hole at position and for connecting flywheel shaft.
Above-mentioned engine test dynamic analog dynamometer machine, it is characterised in that：The inertial flywheel is flanged type inertia
Flywheel, the flanged type inertial flywheel include discoidal flanged type flywheel body and are arranged at the center of flanged type flywheel body
At position and for connecting the flanged type flywheel mounting hole of flywheel shaft, it is respectively provided on the both sides side of the flanged type flywheel body
There is the loss of weight technology groove of circular ring shape.
Above-mentioned engine test dynamic analog dynamometer machine, it is characterised in that：The dynamometer machine motor is frequency control
Alternating current generator.
Above-mentioned engine test dynamic analog dynamometer machine, it is characterised in that：The encoder is optical-electricity encoder.
The invention also discloses a kind of method and steps simply, realizes convenient engine test dynamic analog dynamometer machine
Road resistance analogy method, which is characterized in that this approach includes the following steps：
Step 1: being run to corresponding to the max. speed for waiting for simulated target vehicle by peripheral control unit control dynamometer machine motor
Maximum (top) speed after, peripheral control unit stopping the rotating speed of dynamometer machine motor is controlled, make the dynamic analog dynamometer machine mould
It is quasi- to wait for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder measures the rotating speed of dynamometer machine motor and is transferred to the rotating speed measured
Peripheral control unit, peripheral control unit is first according to formulaThe rotating speed n that jth time sampling obtains is calculatedjIt is right
That answers waits for the speed v of simulated target vehiclej, further according to formula FE,j=a0+b×vj 2The vehicle for waiting for simulated target vehicle is calculated
Fast vjCorresponding road resistance FE,j, further according to formulaRoad resistance F is calculatedE,jCorresponding engine is defeated
Shaft torque ME,j, then, peripheral control unit is according to road resistance FE,jCorresponding engine output shaft torque ME,jControl dynamometer machine
The torque of motor makes the torque and road resistance F of dynamometer machine motorE,jCorresponding engine output shaft torque ME,jIt is equal；Meanwhile
Force snesor, which measures the torque of dynamometer machine motor and will measure torque, is transferred to peripheral control unit, and peripheral control unit is to surveying
Amount torque is recorded and is stored；Wherein, the value of j is the natural number of 1~n, and n is sampling total degree and value is 1~200
Natural number；I is the final drive ratio for waiting for simulated target vehicle；R be the rolling radius for the driving wheel for waiting for simulated target vehicle andDrimTo wait for the rim diameter of simulated target vehicle, Hflat-ratioTo wait for simulated target
The aspect ratio of the tire of vehicle, W are the deflected width of tyre for waiting for simulated target vehicle；a0To wait for the front-wheel rolling of simulated target vehicle
Dynamic resistance, b are coefficient of air resistance；
Step 2: peripheral control unit is by the received speed v for waiting for simulated target vehiclejCorresponding measurement torque and root
According to formulaWhat is be calculated waits for the speed v of simulated target vehiclejCorresponding road resistance FE,jCorresponding hair
Motivation output shaft torque ME,jIt is compared, when the measurement torque that n times sample and the engine output shaft torque being calculated
Difference be not in the range of the 2%~10% of the engine output shaft torque being calculated when, repeat step 3, directly
The measurement torque sampled to n times is defeated in the engine being calculated with the engine output shaft torque difference that is calculated
In the range of the 2%~10% of shaft torque；
Step 3: being run to corresponding to the max. speed for waiting for simulated target vehicle by peripheral control unit control dynamometer machine motor
After corresponding maximum (top) speed, peripheral control unit stopping controls the rotating speed of dynamometer machine motor, makes the dynamic analog measurement of power
Machine simulation waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder measures the rotating speed of dynamometer machine motor and is transferred to the rotating speed measured
Peripheral control unit, peripheral control unit is according to formulaThe rotating speed n that jth time sampling obtains is calculatedjIt is corresponding
The speed v for waiting for simulated target vehiclej, and inquire the speed v for waiting for simulated target vehicle being stored thereinjThe corresponding last time
The measurement torque in simulation process is slided, peripheral control unit slides the measurement moment of torsion control measurement of power in simulation process according to the last time
The torque of electromechanical machine makes the torque of dynamometer machine motor and the last measurement moment of torsion etc. slided in simulation process；Meanwhile power passes
Sensor, which measures the torque of dynamometer machine motor and will measure torque, is transferred to peripheral control unit, and peripheral control unit is turned round to measuring
Square is recorded and is stored；
Step 4: the measurement torque that last time is executed step 3 record and storage by peripheral control unit is determined as waiting simulating
The corresponding road resistance of vehicle of target vehicle；
Step 5: peripheral control unit is according to waiting for that the corresponding road resistance of the vehicle of simulated target vehicle controls dynamometer machine motor
Torque, keep the torque of dynamometer machine motor equal with the corresponding road resistance of the vehicle of simulated target vehicle is waited for.
Above-mentioned method, it is characterised in that：The peripheral control unit includes main control computer, is connect with main control computer
PLC module and the frequency converter being connect with PLC module.
Above-mentioned method, it is characterised in that：Peripheral control unit control dynamometer machine motor is run in step 1 and step 3
Detailed process corresponding to the maximum (top) speed for the max. speed for waiting for simulated target vehicle is：
Step A, on main control computer, setting waits for the rim diameter D of simulated target vehiclerim, wait for simulated target vehicle
The aspect ratio H of tireflat-ratio, wait for the deflected width of tyre W of simulated target vehicle and wait for the final drive of simulated target vehicle
Compare i；And setting waits for the front-wheel rolling resistance a of simulated target vehicle on main control computer0With coefficient of air resistance b；
Step B, main control computer is according to formulaBe calculated dynamometer machine motor correspond to wait simulating
The max. speed v of target vehiclemaxMaximum (top) speed nmax, wherein i is the final drive ratio for waiting for simulated target vehicle, to wait for mould
The product of the transmission ratio of each gear of quasi- target vehicle；R be the rolling radius for the driving wheel for waiting for simulated target vehicle and
Step C, dynamometer machine motor is corresponded to the max. speed v for waiting for simulated target vehicle by main control computermaxMaximum turn
Fast nmaxIt is transferred to PLC module, PLC module is transmitted further to frequency converter, the dynamometer machine motor fortune in transducer drive dynamometer machine motor
Go to the maximum (top) speed corresponding to the max. speed for waiting for simulated target vehicle.
Compared with the prior art, the present invention has the following advantages：
1, the structure of inventive engine experiment dynamic analog dynamometer machine is simple, and reasonable design realizes convenient and cost
It is low.
2, the use of inventive engine experiment dynamic analog dynamometer machine is easy to operate.
3, engine test dynamic analog dynamometer machine of the invention, can on engine pedestal accurate simulation vehicle
(motorcycle, automobile) movement inertia, moreover it is possible to the simulation for realizing the corresponding road resistance of speed for treating simulated target vehicle, to
Can on engine pedestal accurate simulation motorcycle, automobile etc. vehicle performance, complete function.
4, the functional reliability and stability of inventive engine experiment dynamic analog dynamometer machine are high.
5, the method and step of the road resistance analogy method of inventive engine experiment dynamic analog dynamometer machine is simple, real
Now facilitate.
6, the present invention's is highly practical, convenient for promoting the use of.
In conclusion the reasonable design of the present invention, realizes convenient and at low cost, complete function, functional reliability and stabilization
Property it is high, it is highly practical, convenient for promoting the use of.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is the structural schematic diagram of engine test dynamic analog dynamometer machine in the embodiment of the present invention 1.
Fig. 2 is the front view of monoblock type inertial flywheel in the embodiment of the present invention 1.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the structural schematic diagram of engine test dynamic analog dynamometer machine in the embodiment of the present invention 2.
Fig. 5 is the front view of 2 flange formula inertial flywheel of the embodiment of the present invention.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the schematic block circuit diagram of peripheral control unit of the present invention.
Reference sign:
1-encoder；2-the first inertial flywheel bearing support；3-monoblock type inertial flywheels；
3-1-integral flywheel ontology；3-2-integral flywheel mounting hole；4-flywheel shafts；
5-the second inertial flywheel bearing support；6-flywheel shaft shaft couplings；7-pedestals；
8-first motor bearing supports；9-dynamometer machine motors；10-force snesors；
11-the second motor bearings supports；12-dynamometer machine main spindle couplings；
13-flanged type inertial flywheels；13-1-flanged type flywheel body；
13-2-flanged type flywheel mounting hole；13-3-loss of weight technology groove；
14-peripheral control units；14-1-main control computer；14-2-PLC module；
14-3-frequency converter.
Specific implementation mode
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, the engine test of the present embodiment dynamic analog dynamometer machine, including pedestal 7 and
The first inertial flywheel bearing support 2, the second inertial flywheel bearing support 5, the first motor bearing branch being fixedly connected on pedestal 7
Support 8 and the second motor bearings support 11, pacify in the first inertial flywheel bearing support 2 and the second inertial flywheel bearing support 5
Equipped with flywheel shaft 4, one section between the first inertial flywheel bearing support 2 and the second inertial flywheel bearing support 5 flies
It is connected with inertial flywheel on wheel shaft 4, measurement of power is provided between 8 and second motor bearings of first motor bearing support support 11
The both ends output shaft of electromechanical machine 9, the dynamometer machine motor 9 is separately mounted to first motor bearing support 8 and the second motor bearings
In support 11, output shaft of the dynamometer machine motor 9 close to the inertial flywheel side passes through flywheel shaft shaft coupling 6 and flywheel shaft
4 connections, the dynamometer machine motor 9 are connected with dynamometer machine main spindle coupling 12 on the output shaft far from the inertial flywheel side,
The end of the flywheel shaft 4 is connected with the encoder 1 measured for the rotating speed to flywheel shaft 4, the dynamometer machine motor 9
It is provided with that one end is fixedly connected with the shell of dynamometer machine motor 9, the other end is fixedly connected with pedestal 7 on shell and for measurement of power
The force snesor 10 that the torque of electromechanical machine 9 measures.
In the present embodiment, the inertial flywheel is monoblock type inertial flywheel 3, and the monoblock type inertial flywheel 3 includes disk
The integral flywheel ontology 3-1 of shape and center position in integral flywheel ontology 3-1 is set and for connecting flywheel shaft 4
Integral flywheel mounting hole 3-2.
In the present embodiment, the dynamometer machine motor 9 is frequency conversion timing AC motor.
In the present embodiment, the encoder 1 is optical-electricity encoder.
The road resistance analogy method of the engine test of the present embodiment dynamic analog dynamometer machine, includes the following steps：
It is run to corresponding to the highest for waiting for simulated target vehicle Step 1: controlling dynamometer machine motor 9 by peripheral control unit 14
After the maximum (top) speed of speed, the stopping of peripheral control unit 14 controls the rotating speed of dynamometer machine motor 9, and the dynamic analog is made to survey
The simulation of work(machine waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder 1 measures the rotating speed of dynamometer machine motor 9 and transmits the rotating speed measured
To peripheral control unit 14, peripheral control unit 14 is first according to formulaTurn that jth time sampling obtains is calculated
Fast njThe corresponding speed v for waiting for simulated target vehiclej, further according to formula FE,j=a0+b×vj 2It is calculated and waits for simulated target vehicle
Speed vjCorresponding road resistance FE,j, further according to formulaRoad resistance F is calculatedE,jIt is corresponding to start
Machine output shaft torque ME,j, then, peripheral control unit 14 is according to road resistance FE,jCorresponding engine output shaft torque ME,jControl
The torque of dynamometer machine motor 9 makes the torque and road resistance F of dynamometer machine motor 9E,jCorresponding engine output shaft torque ME,jPhase
Deng；Meanwhile force snesor 10 measures the torque of dynamometer machine motor 9 and is transferred to peripheral control unit 14 by torque is measured,
Peripheral control unit 14 is recorded and is stored to measuring torque；Wherein, the value of j is the natural number of 1~n, and n is sampling total degree
And the natural number that value is 1~200；I is the final drive ratio for waiting for simulated target vehicle；R is the driving for waiting for simulated target vehicle
The rolling radius of wheel andDrimTo wait for the rim diameter of simulated target vehicle,
Hflat-ratioFor wait for simulated target vehicle tire aspect ratio, W is the deflected width of tyre for waiting for simulated target vehicle；a0To wait for
The front-wheel rolling resistance of simulated target vehicle, b are coefficient of air resistance；
Step 2: peripheral control unit 14 is by the received speed v for waiting for simulated target vehiclejCorresponding measurement torque with
According to formulaWhat is be calculated waits for the speed v of simulated target vehiclejCorresponding road resistance FE,jIt is corresponding
Engine output shaft torque ME,jIt is compared, when the measurement torque that n times sample and the engine output shaft being calculated are turned round
Square difference be not in the range of the 2%~10% of the engine output shaft torque being calculated when, repeat step 3,
Until measurement torque that n times sample and the engine output shaft torque difference being calculated are in the engine being calculated
In the range of the 2%~10% of output shaft torque；
It is run to corresponding to the highest for waiting for simulated target vehicle Step 3: controlling dynamometer machine motor 9 by peripheral control unit 14
After the corresponding maximum (top) speed of speed, the stopping of peripheral control unit 14 controls the rotating speed of dynamometer machine motor 9, makes the dynamic analog
Quasi- dynamometer machine simulation waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder 1 measures the rotating speed of dynamometer machine motor 9 and transmits the rotating speed measured
To peripheral control unit 14, peripheral control unit 14 is according to formulaThe rotating speed that jth time sampling obtains is calculated
njThe corresponding speed v for waiting for simulated target vehiclej, and inquire the speed v for waiting for simulated target vehicle being stored thereinjIt is corresponding
Last time slides the measurement torque in simulation process, and peripheral control unit 14 slides the measurement torque in simulation process according to the last time
The torque for controlling dynamometer machine motor 9 makes the torque of dynamometer machine motor 9 and the last measurement moment of torsion slided in simulation process
Deng；Meanwhile force snesor 10 measures the torque of dynamometer machine motor 9 and is transferred to peripheral control unit 14 by torque is measured,
Peripheral control unit 14 is recorded and is stored to measuring torque；
Step 4: the measurement torque that last time is executed step 3 record and storage by peripheral control unit 14 is determined as waiting for mould
The corresponding road resistance of vehicle of quasi- target vehicle；
Step 5: peripheral control unit 14 is according to waiting for that the vehicle of simulated target vehicle corresponding road resistance control measurement of power is electromechanical
The torque of machine 9 keeps the torque of dynamometer machine motor 9 equal with the corresponding road resistance of the vehicle of simulated target vehicle is waited for.
In the present embodiment, as shown in fig. 7, the peripheral control unit 14 includes main control computer 14-1 and main control computer
The PLC module 14-2 of the 14-1 connections and frequency converter 14-3 being connect with PLC module 14-2.
The control dynamometer machine of peripheral control unit 14 motor 9, which runs to correspond to, in the present embodiment, in step 1 and step 3 waits for
The detailed process of the maximum (top) speed of the max. speed of simulated target vehicle is：
Step A, on main control computer 14-1, setting waits for the rim diameter D of simulated target vehiclerim, wait for that simulated target is whole
The aspect ratio H of the tire of vehicleflat-ratio, wait for the deflected width of tyre W of simulated target vehicle and wait for the final stage of simulated target vehicle
Transmission ratio i (as waits for the transmission ratio between the engine output shaft and driving wheel of simulated target vehicle)；And in main control computer
Setting waits for the front-wheel rolling resistance a of simulated target vehicle on 14-10With coefficient of air resistance b；
Step B, main control computer 14-1 is according to formulaDynamometer machine motor 9 is calculated to correspond to
Wait for the max. speed v of simulated target vehiclemaxMaximum (top) speed nmax, wherein i is the final drive ratio for waiting for simulated target vehicle,
For wait for simulated target vehicle each gear transmission ratio product；R be the rolling radius for the driving wheel for waiting for simulated target vehicle and
Step C, dynamometer machine motor 9 is corresponded to the max. speed v for waiting for simulated target vehicle by main control computer 14-1max's
Maximum (top) speed nmaxIt is transferred to PLC module 14-2, PLC module 14-2 is transmitted further to frequency converter 14-3, and frequency converter 14-3 drives measurement of power
Dynamometer machine motor 9 in electromechanical machine 9 runs to the maximum (top) speed corresponding to the max. speed for waiting for simulated target vehicle.
Embodiment 2
As shown in Figure 4, Figure 5 and Figure 6, the engine test of the present embodiment dynamic analog dynamometer machine, it is different from embodiment 1
Be：The inertial flywheel is flanged type inertial flywheel 13, and the flanged type inertial flywheel 13 flies including discoidal flanged type
Wheel ontology 13-1 and the center position being arranged in flanged type flywheel body 13-1 and the flanged type flywheel for being used to connect flywheel shaft 4
Mounting hole 13-2 is both provided with the loss of weight technology groove 13-3 of circular ring shape on the both sides side of the flanged type flywheel body 13-1.
Remaining structure is same as Example 1.By the way that loss of weight technology groove 13-3 is arranged, the used of large radius can be realized with less material
Property flywheel, and then can realize the simulation compared with large inertia, material and cost are saved, and expand application range.
The road resistance analogy method of the engine test of the present embodiment dynamic analog dynamometer machine is same as Example 1.
In conclusion the engine test dynamic analog dynamometer machine in embodiment 1 and embodiment 2 will be in use, will wait trying
The output shaft for issuing after examination and approval motivation is connect with dynamometer machine main spindle coupling 12, waits for that the inertia of simulated target vehicle is the dynamic analog measurement of power
The inertia of the sum of inertia and electrical analogue inertia of machine, the dynamic analog dynamometer machine is the inertia of the inertial flywheel, measurement of power electromechanics
The sum of the inertia of the inertia of the output shaft of machine 9, the inertia of flywheel shaft shaft coupling 6 and dynamometer machine main spindle coupling 12, electrical analogue are used
Amount is the inertia controlled the rotating speed of dynamometer machine motor 9 by peripheral control unit, passes through the dynamic analog dynamometer machine
Inertia and electrical analogue inertia, can realize the accurate simulation for the inertia for treating simulated target vehicle；Pass through peripheral control unit control
The torque of dynamometer machine motor 9 processed, additionally it is possible to realize the simulation for the corresponding road resistance of speed for treating simulated target vehicle；To
It is capable of the vehicle performance of accurate simulation motorcycle, automobile etc. on threst stand.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
Technical spirit changes any simple modification, change and equivalent structure made by above example, still falls within skill of the present invention
In the protection domain of art scheme.
Claims (8)
1. a kind of engine test dynamic analog dynamometer machine, including pedestal (7) and be fixedly connected on pedestal (7) first
Inertial flywheel bearing support (2), the second inertial flywheel bearing support (5), first motor bearing support (8) and the second motor bearings
It supports (11), flywheel shaft is installed in the first inertial flywheel bearing support (2) and the second inertial flywheel bearing support (5)
(4), one section of flywheel shaft between the first inertial flywheel bearing support (2) and the second inertial flywheel bearing support (5)
(4) it is connected with inertial flywheel on, survey is provided between the first motor bearing support (8) and the second motor bearings support (11)
The both ends output shaft of work(electromechanics machine (9), the dynamometer machine motor (9) is separately mounted to first motor bearing support (8) and second
Motor bearings supports on (11), and output shaft of the dynamometer machine motor (9) close to the inertial flywheel side is joined by flywheel shaft
Axis device (6) is connect with flywheel shaft (4), and the dynamometer machine motor (9) is connected on the output shaft far from the inertial flywheel side
Dynamometer machine main spindle coupling (12), the end of the flywheel shaft (4) is connected with to be measured for the rotating speed to flywheel shaft (4)
Encoder (1) is provided with one end on the shell of the dynamometer machine motor (9) and is fixedly connected, separately with the shell of dynamometer machine motor (9)
One end is fixedly connected with pedestal (7) and the force snesor (10) for being measured to the torque of dynamometer machine motor (9), feature
It is, the road resistance analogy method of the engine test dynamic analog dynamometer machine includes the following steps：
Step 1: being run to corresponding to the highest for waiting for simulated target vehicle by peripheral control unit (14) control dynamometer machine motor (9)
After the maximum (top) speed of speed, peripheral control unit (14) stopping controls the rotating speed of dynamometer machine motor (9), makes the dynamic analog
Quasi- dynamometer machine simulation waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder (1) measures the rotating speed of dynamometer machine motor (9) and transmits the rotating speed measured
Peripheral control unit (14) is given, peripheral control unit (14) is first according to formulaJth time sampling is calculated to obtain
Rotating speed njThe corresponding speed v for waiting for simulated target vehiclej, further according to formula FE,j=a0+b×vj 2It is calculated and waits for simulated target
The speed v of vehiclejCorresponding road resistance FE,j, further according to formulaRoad resistance F is calculatedE,jIt is corresponding
Engine output shaft torque ME,j, then, peripheral control unit (14) is according to road resistance FE,jCorresponding engine output shaft torque
ME,jThe torque for controlling dynamometer machine motor (9) makes the torque and road resistance F of dynamometer machine motor (9)E,jCorresponding engine output
Axis torque ME,jIt is equal；Meanwhile force snesor (10) measures the torque of dynamometer machine motor (9) and will measure torque transmission
Peripheral control unit (14), peripheral control unit (14) is given to be recorded and stored to measuring torque；Wherein, the value of j is 1~n's
Natural number, the natural number that n is sampling total degree and value is 1~200；I is the final drive ratio for waiting for simulated target vehicle；R is
Wait for the rolling radius of the driving wheel of simulated target vehicle andDrimTo wait for simulated target
The rim diameter of vehicle, Hflat-ratioFor wait for simulated target vehicle tire aspect ratio, W is the tire for waiting for simulated target vehicle
Section width；a0To wait for that the front-wheel rolling resistance of simulated target vehicle, b are coefficient of air resistance；
Step 2: peripheral control unit (14) is by the received speed v for waiting for simulated target vehiclejCorresponding measurement torque and root
According to formulaWhat is be calculated waits for the speed v of simulated target vehiclejCorresponding road resistance FE,jCorresponding hair
Motivation output shaft torque ME,jIt is compared, when the measurement torque that n times sample and the engine output shaft torque being calculated
Difference be not in the range of the 2%~10% of the engine output shaft torque being calculated when, repeat step 3, directly
The measurement torque sampled to n times is defeated in the engine being calculated with the engine output shaft torque difference that is calculated
In the range of the 2%~10% of shaft torque；
Step 3: being run to corresponding to the highest for waiting for simulated target vehicle by peripheral control unit (14) control dynamometer machine motor (9)
After the corresponding maximum (top) speed of speed, peripheral control unit (14) stopping controls the rotating speed of dynamometer machine motor (9), makes described dynamic
Morphotype intends dynamometer machine simulation and waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder (1) measures the rotating speed of dynamometer machine motor (9) and transmits the rotating speed measured
Peripheral control unit (14) is given, peripheral control unit (14) is according to formulaIt is calculated what jth time sampling obtained
Rotating speed njThe corresponding speed v for waiting for simulated target vehiclej, and inquire the speed v for waiting for simulated target vehicle being stored thereinjIt is right
The last time answered slides the measurement torque in simulation process, and peripheral control unit (14) slides the survey in simulation process according to the last time
The torque for measuring moment of torsion control dynamometer machine motor (9) makes the torque of dynamometer machine motor (9) and the last survey slided in simulation process
Measure moment of torsion etc.；Meanwhile force snesor (10) measures the torque of dynamometer machine motor (9) and will measure torque and is transferred to outside
Portion's controller (14), peripheral control unit (14) are recorded and are stored to measuring torque；
Step 4: the measurement torque that last time is executed step 3 record and storage by peripheral control unit (14) is determined as waiting simulating
The corresponding road resistance of vehicle of target vehicle；
Step 5: peripheral control unit (14) basis waits for the corresponding road resistance control dynamometer machine motor of the vehicle of simulated target vehicle
(9) torque keeps the torque of dynamometer machine motor (9) equal with the corresponding road resistance of the vehicle of simulated target vehicle is waited for.
2. engine test described in accordance with the claim 1 dynamic analog dynamometer machine, it is characterised in that：The inertial flywheel is
Monoblock type inertial flywheel (3), the monoblock type inertial flywheel (3) include discoidal integral flywheel ontology (3-1) and setting
Integral flywheel ontology (3-1) center position and for connecting the integral flywheel mounting hole (3-2) of flywheel shaft (4).
3. engine test described in accordance with the claim 1 dynamic analog dynamometer machine, it is characterised in that：The inertial flywheel is
Flanged type inertial flywheel (13), the flanged type inertial flywheel (13) include discoidal flanged type flywheel body (13-1) and set
Set the center position in flanged type flywheel body (13-1) and the flanged type flywheel mounting hole (13- for connecting flywheel shaft (4)
2) the loss of weight technology groove (13-3) of circular ring shape, is both provided on the both sides side of the flanged type flywheel body (13-1).
4. according to engine test according to claim 2 or 3 dynamic analog dynamometer machine, it is characterised in that：The dynamometer machine
Motor (9) is frequency conversion timing AC motor.
5. according to engine test according to claim 2 or 3 dynamic analog dynamometer machine, it is characterised in that：The encoder
(1) it is optical-electricity encoder.
6. a kind of carrying out road resistance simulation using engine test such as described in accordance with the claim 1 with dynamic analog dynamometer machine
Method, which is characterized in that this approach includes the following steps：
Step 1: being run to corresponding to the highest for waiting for simulated target vehicle by peripheral control unit (14) control dynamometer machine motor (9)
After the maximum (top) speed of speed, peripheral control unit (14) stopping controls the rotating speed of dynamometer machine motor (9), makes the dynamic analog
Quasi- dynamometer machine simulation waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder (1) measures the rotating speed of dynamometer machine motor (9) and transmits the rotating speed measured
Peripheral control unit (14) is given, peripheral control unit (14) is first according to formulaJth time sampling is calculated to obtain
Rotating speed njThe corresponding speed v for waiting for simulated target vehiclej, further according to formula FE,j=a0+b×vj 2It is calculated and waits for simulated target
The speed v of vehiclejCorresponding road resistance FE,j, further according to formulaRoad resistance F is calculatedE,jIt is corresponding
Engine output shaft torque ME,j, then, peripheral control unit (14) is according to road resistance FE,jCorresponding engine output shaft torque
ME,jThe torque for controlling dynamometer machine motor (9) makes the torque and road resistance F of dynamometer machine motor (9)E,jCorresponding engine output
Axis torque ME,jIt is equal；Meanwhile force snesor (10) measures the torque of dynamometer machine motor (9) and will measure torque transmission
Peripheral control unit (14), peripheral control unit (14) is given to be recorded and stored to measuring torque；Wherein, the value of j is 1~n's
Natural number, the natural number that n is sampling total degree and value is 1~200；I is the final drive ratio for waiting for simulated target vehicle；R is
Wait for the rolling radius of the driving wheel of simulated target vehicle andDrimTo wait for simulated target
The rim diameter of vehicle, Hflat-ratioFor wait for simulated target vehicle tire aspect ratio, W is the tire for waiting for simulated target vehicle
Section width；a0To wait for that the front-wheel rolling resistance of simulated target vehicle, b are coefficient of air resistance；
Step 2: peripheral control unit (14) is by the received speed v for waiting for simulated target vehiclejCorresponding measurement torque and root
According to formulaWhat is be calculated waits for the speed v of simulated target vehiclejCorresponding road resistance FE,jIt is corresponding
Engine output shaft torque ME,jIt is compared, when the measurement torque that n times sample and the engine output shaft being calculated are turned round
Square difference be not in the range of the 2%~10% of the engine output shaft torque being calculated when, repeat step 3,
Until measurement torque that n times sample and the engine output shaft torque difference being calculated are in the engine being calculated
In the range of the 2%~10% of output shaft torque；
Step 3: being run to corresponding to the highest for waiting for simulated target vehicle by peripheral control unit (14) control dynamometer machine motor (9)
After the corresponding maximum (top) speed of speed, peripheral control unit (14) stopping controls the rotating speed of dynamometer machine motor (9), makes described dynamic
Morphotype intends dynamometer machine simulation and waits for that simulated target vehicle slides into the taxiing procedures of stationary state on road from max. speed；
It slides in simulation process, encoder (1) measures the rotating speed of dynamometer machine motor (9) and transmits the rotating speed measured
Peripheral control unit (14) is given, peripheral control unit (14) is according to formulaIt is calculated what jth time sampling obtained
Rotating speed njThe corresponding speed v for waiting for simulated target vehiclej, and inquire the speed v for waiting for simulated target vehicle being stored thereinjIt is right
The last time answered slides the measurement torque in simulation process, and peripheral control unit (14) slides the survey in simulation process according to the last time
The torque for measuring moment of torsion control dynamometer machine motor (9) makes the torque of dynamometer machine motor (9) and the last survey slided in simulation process
Measure moment of torsion etc.；Meanwhile force snesor (10) measures the torque of dynamometer machine motor (9) and will measure torque and is transferred to outside
Portion's controller (14), peripheral control unit (14) are recorded and are stored to measuring torque；
Step 4: the measurement torque that last time is executed step 3 record and storage by peripheral control unit (14) is determined as waiting simulating
The corresponding road resistance of vehicle of target vehicle；
Step 5: peripheral control unit (14) basis waits for the corresponding road resistance control dynamometer machine motor of the vehicle of simulated target vehicle
(9) torque keeps the torque of dynamometer machine motor (9) equal with the corresponding road resistance of the vehicle of simulated target vehicle is waited for.
7. according to the method for claim 6, it is characterised in that：The peripheral control unit (14) includes main control computer (14-
1) PLC module (14-2), being connect with main control computer (14-1) and the frequency converter (14-3) being connect with PLC module (14-2).
8. according to the method for claim 7, it is characterised in that：Peripheral control unit (14) control is surveyed in step 1 and step 3
Work(electromechanics machine (9) is run to corresponding to waiting for that the detailed process of maximum (top) speed of the max. speed of simulated target vehicle is：
Step A, on main control computer (14-1), setting waits for the rim diameter D of simulated target vehiclerim, wait for simulated target vehicle
Tire aspect ratio Hflat-ratio, wait for the deflected width of tyre W of simulated target vehicle and wait for simulated target vehicle final stage pass
It is dynamic to compare i；And setting waits for the front-wheel rolling resistance a of simulated target vehicle on main control computer (14-1)0And coefficient of air resistance
b；
Step B, main control computer (14-1) is according to formulaDynamometer machine motor (9) is calculated to correspond to
Wait for the max. speed v of simulated target vehiclemaxMaximum (top) speed nmax, wherein r is the rolling for the driving wheel for waiting for simulated target vehicle
Radius and
Step C, dynamometer machine motor (9) is corresponded to the max. speed v for waiting for simulated target vehicle by main control computer (14-1)max's
Maximum (top) speed nmaxIt is transferred to PLC module (14-2), PLC module (14-2) is transmitted further to frequency converter (14-3), frequency converter (14-3)
Dynamometer machine motor (9) in driving dynamometer machine motor (9) runs to the maximum corresponding to the max. speed for waiting for simulated target vehicle
Rotating speed.
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| CN108692962B (en) * | 2017-04-11 | 2021-01-15 | 上海汽车集团股份有限公司 | Vehicle road simulation system |
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| CN109141702B (en) * | 2018-08-24 | 2021-03-23 | 智车优行科技（上海）有限公司 | Method and system for testing internal resistance of driving motor |
| CN110320043B (en) * | 2019-06-28 | 2024-04-12 | 广西玉柴机器股份有限公司 | Device capable of rapidly measuring engine torque and application method |
| CN111735641B (en) * | 2020-06-30 | 2021-08-06 | 东风汽车集团有限公司 | Finished automobile test method and system with self-defined working condition |
| CN112229648A (en) * | 2020-09-30 | 2021-01-15 | 山东交通学院 | Road resistance simulation test bed for automatic driving automobile |
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