CN109916633A

CN109916633A - A kind of engine test system

Info

Publication number: CN109916633A
Application number: CN201711321451.5A
Authority: CN
Inventors: 李忠校
Original assignee: Chongqing Cypress Filial Machinery Accessories Co Ltd
Current assignee: Chongqing Cypress Filial Machinery Accessories Co Ltd
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2019-06-21

Abstract

The invention discloses a kind of engine test systems, including dynamometer machine, sensing and detecting system, control system, engine pedestal, throttle operation mechanism, clutch operating mechanism and Gear shift operation mechanism；Dynamometer machine includes pedestal, the first inertial flywheel bearing support, the 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, dynamometer machine motor is provided between first motor bearing support and the support of the second motor bearings, the end of flywheel shaft is connected with encoder, and force sensor is arranged on the shell of dynamometer machine motor；Control system includes main control computer, PLC module and frequency converter, and sensing and detecting system includes fuel consumption meter；The invention also discloses a kind of engine test methods.The present invention is easy to install and use, and functional reliability is high, practical.

Description

A kind of engine test system

Technical field

The invention belongs to engine test technical fields, and in particular to a kind of engine test system.

Background technique

Traditional engine test system is generally used to the parameters such as measurement engine power, torque, fuel consumption.With skill The development of art and to shorten the development cycle demand, need to want matched vehicle (motorcycle, vapour to engine on rack Vehicle) performance (speed, accelerating ability etc.) simulated, and traditional engine test system can not accurate simulation vehicle performance.

Summary of the invention

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 It is single, novel design is reasonable, easy to use, cost of implementation is low, functional reliability is high, long service life, can be effectively in engine bed The simulation of vehicle performance is carried out on frame, reduces development experiments cost, practical engine test system.

In order to solve the above technical problems, the technical solution adopted by the present invention is that:

A kind of engine test system, including dynamometer machine 3, sensing and detecting system, control system 1 and to be tested for installing The engine pedestal 13 of engine 12, and the throttle operation mechanism 9 for operating engine 12 to be tested, clutch operating machine Structure 10 and Gear shift operation mechanism 11；

The dynamometer machine 3 includes pedestal 3-7 and the first inertial flywheel bearing support 3- being fixedly connected on pedestal 3-7 2, the second inertial flywheel bearing support 3-5, first motor bearing support 3-8 and the second motor bearings support 3-11, and described first Flywheel shaft 3-4 is installed on inertial flywheel bearing support 3-2 and the second inertial flywheel bearing support 3-5, it is used to be located at described first Property flywheel bearing support 3-2 and the second inertial flywheel bearing support 3-5 between one section of flywheel shaft 3-4 on be connected with inertia fly Wheel is provided with dynamometer machine motor 3-9 between the first motor bearing support 3-8 and the second motor bearings support 3-11, described The both ends output shaft of dynamometer machine motor 3-9 is separately mounted to first motor bearing support 3-8 and the second motor bearings support 3-11 On, output shaft of the dynamometer machine motor 3-9 close to the inertial flywheel side passes through flywheel shaft shaft coupling 3-6 and flywheel shaft 3- 4 connections, the dynamometer machine motor 3-9 are connected on the output shaft far from the inertial flywheel side for connecting to be tested start The dynamometer machine main spindle coupling 3-12 of the output shaft of machine 12, the end of the flywheel shaft 3-4 is connected with for flywheel shaft 3-4's The encoder 3-1 that revolving speed measures is provided with one end and dynamometer machine motor 3-9 on the shell of the dynamometer machine motor 3-9 Shell is fixedly connected, the other end is fixedly connected with pedestal 3-7 and the power for measuring to the torque of dynamometer machine motor 3-9 passes Sensor 3-10；

The throttle operation mechanism 9 includes Throttle Opening Control servo motor 9-1, throttle rotating wheel 9-2 and acceleration cable 9-3, The rotating wheel 9-2 is fixedly connected on the output shaft of Throttle Opening Control servo motor 9-1, and the acceleration cable 9-3 is wrapped in oil On door rotating wheel 9-2, the air throttle of the engine 12 to be tested is connect with acceleration cable 9-3；

The clutch operating mechanism 10 includes clutch control servo motor 10-1, clutch rotating wheel 10-2, first Clutch cable 10-3, clutch operating connecting rod 10-4 and second clutch bracing wire 10-5, the clutch rotating wheel 10-2 are solid Surely be connected on the output shaft of clutch control servo motor 10-1, the one ends wound of the first clutch bracing wire 10-3 from On clutch rotating wheel 10-2, the other end of the first clutch bracing wire 10-3 is connect with clutch operating connecting rod 10-4, described One end of second clutch bracing wire 10-5 is connect with clutch operating connecting rod 10-4, the clutch behaviour of the engine 12 to be tested Trailing arm is connect with the other end of second clutch bracing wire 10-5；

The Gear shift operation mechanism 11 includes shift control servo motor 11-1, shift rotating wheel 11-2 and gear-shifting bracing wire 11-3, the shift rotating wheel 11-2 are fixedly connected on the output shaft of shift control servo motor 11-1, the gear-shifting bracing wire 11-3 is wrapped on shift rotating wheel 11-2, and the gear lever of the engine 12 to be tested is connect with gear-shifting bracing wire 11-3；

The PLC module 1-2 and and PLC that the control system 1 includes main control computer 1-1, connects with main control computer 1-1 The frequency converter 1-3 that module 1-2 connects, the encoder 3-1 and force snesor 3-10 are connect with the input terminal of PLC module 1-2, The Throttle Opening Control servo motor 9-1, clutch control servo motor 10-1 and shift control servo motor 11-1 with PLC mould The output end of block 1-2 connects, and the dynamometer machine motor 3-9 is connect with frequency converter 1-3；

The sensing and detecting system includes the fuel consumption meter detected for treating the fuel consumption of test engine 12 5, the fuel consumption meter 5 is connect with the input terminal of PLC module 1-2.

The sensing and detecting system further includes the leakage detected for treating the crankcase gas leakage of test engine 12 Gas measuring instrument 4, for treat test engine 12 burn when air-fuel ratio detected Air/Fuel ratio analysis instrument 7, for treating The first temperature sensor 6-1 that the spark-plug gasket temperature of test engine 12 is detected, for treating test engine 12 Oil temperature detected second temperature sensor 6-2, detected for treating the intake air temperature of test engine 12 Third temperature sensor 6-3, the 4th temperature sensor 6- that is detected for treating the fuel oil temperature of test engine 12 4, for treating first pressure sensor 8-1 that the admission pressure of test engine 12 detected, for starting to be tested Second pressure sensor 8-2 that 12 pressure at expulsion of machine is detected, it is examined for treating the fuel pressure of test engine 12 The engine speed sensing that the third pressure sensor 8-3 of survey and pulse revolving speed for treating test engine 12 are detected Device 2, the gas leak meter 4 and Air/Fuel ratio analysis instrument 7 are connect with main control computer 1-1, the first temperature sensor 6- 1, second temperature sensor 6-2, third temperature sensor 6-3, the 4th temperature sensor 6-4, first pressure sensor 8-1, Two pressure sensor 8-2, third pressure sensor 8-3 and engine speed sensor 2 connect with the input terminal of PLC module 1-2 It connects.

The inertial flywheel is monoblock type inertial flywheel 3-3, and the monoblock type inertial flywheel 3-3 includes discoidal entirety Entirety of the formula flywheel body 3-31 with the center position that integral flywheel ontology 3-31 is arranged in and for connecting flywheel shaft 3-4 Formula flywheel mounting hole 3-32.

The inertial flywheel is flanged type inertial flywheel 3-13, and the flanged type inertial flywheel 3-13 includes discoidal convex Edge formula flywheel body 3-131 is with the center position that flanged type flywheel body 3-131 is arranged in and for connecting flywheel shaft 3-4's Flanged type flywheel mounting hole 3-132 is provided with the loss of weight of circular ring shape on the two sides side of the flanged type flywheel body 3-131 Technology groove 3-133.

The dynamometer machine motor 3-9 is frequency conversion timing AC motor.

The encoder 3-1 is optical-electricity encoder.

The application method method of the pilot system is the following steps are included: the application method of the system is as follows:

Step 1: determining the corresponding road resistance of vehicle to simulated target vehicle and being stored in main control computer 1-1；

Step 2: engine 12 to be tested is fixed on engine pedestal 13, and by the output of engine 12 to be tested Axis is connect with dynamometer machine main spindle coupling 3-12；

Step 3: the air throttle of engine 12 to be tested is connect with the acceleration cable 9-3 in throttle operation mechanism 9, it will The clutch control arm of engine 12 to be tested is connect with the second clutch bracing wire 10-5 in clutch operating mechanism 10, and will The gear lever of engine 12 to be tested is connect with the gear-shifting bracing wire 11-3 in Gear shift operation mechanism 11；

Step 4: carrying out to simulated target vehicle the max speed engine test, detailed process are as follows:

The corresponding road of the vehicle to simulated target vehicle that step 401, main control computer 1-1 will be determined in step 1 Resistance is transferred to PLC module 1-2, and PLC module 1-2 is transmitted further to frequency converter 1-3, and frequency converter 1-3 drives the measurement of power in dynamometer machine 3 Electromechanical machine 3-9 makes the work of dynamometer machine 3 under road resistance simulation model；

Step 402, starting engine 12 to be tested；

Step 403, main control computer 1-1 and PLC module 1-2 control shift control servo motor 11-1 rotation, shift control Servo motor 11-1 processed rotation drives shift rotating wheel 11-2 rotation, shift rotating wheel 11-2 by gear-shifting bracing wire 11-3 drive to The gear lever of test engine 12 acts, and is sequentially switched to engine 12 to be tested by neutral gear most high-grade, in shift process, Main control computer 1-1 and PLC module 1-2 control clutch control servo motor 10-1 rotation, clutch control servo motor 10- 1 drives clutch rotating wheel 10-2 rotation, and clutch rotating wheel 10-2 is acted by first clutch bracing wire 10-3, the first clutch Device bracing wire 10-3 drives clutch operating connecting rod 10-4 movement, and clutch operating connecting rod 10-4 passes through second clutch bracing wire again 10-5 drives the clutch control arm of engine 12 to be tested to act, after the throw-out-of clutch control and shift before realizing shift Clutch combines control；

Step 404, main control computer 1-1 and PLC module 1-2 control Throttle Opening Control servo motor 9-1 rotation, Throttle Opening Control Servo motor 9-1 drives throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 drives engine to be tested by acceleration cable 9-3 12 air throttle movement, makes the air throttle of engine 12 to be tested open to the maximum position；

In step 405,12 course of work of engine to be tested, the revolving speed that encoder 3-1 treats test engine 12 is carried out It measures and the revolving speed measured is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, when master control meter When the multiple rotating speed difference that calculation machine 1-1 determines that it is continuously received is not more than 20r/min~70r/min, it is judged to being modeled Stable the max speed is had reached to simulated target vehicle, at this point, main control computer 1-1 is calculated according to formula and to be modeled The max speed to simulated target vehicle；Wherein, r is the rolling radius of the driving wheel to simulated target vehicle and Drim is to mould The rim diameter of quasi- target vehicle, Hflat-ratio are the aspect ratio of the tire to simulated target vehicle, and W is to simulated target The deflected width of tyre of vehicle；I is the final drive ratio to simulated target vehicle；Encoder 3-1 is detected nmax at this time Dynamometer machine motor 9 corresponds to the maximum (top) speed of the max. speed vmax to simulated target vehicle；

Step 5: carrying out the acceleration motor test that starts to walk to simulated target vehicle, detailed process are as follows:

Step 501, the measurement distance Sq that setting starting accelerates on main control computer 1-1；

The target vehicle road resistance determined in step 1 is transferred to PLC module by step 502, main control computer 1-1 1-2, PLC module 1-2 are transmitted further to frequency converter 1-3, and frequency converter 1-3 drives in dynamometer machine 3 according to target vehicle road resistance Dynamometer machine motor 3-9 makes the work of dynamometer machine 3 under road resistance simulation model；

Step 503, starting engine 12 to be tested；

Step 504, main control computer 1-1 and PLC module 1-2 control shift control servo motor 11-1 rotation, shift control Servo motor 11-1 processed rotation drives shift rotating wheel 11-2 rotation, shift rotating wheel 11-2 by gear-shifting bracing wire 11-3 drive to The gear lever of test engine 12 acts, and is sequentially switched to engine 12 to be tested by neutral gear most high-grade, in shift process, Main control computer 1-1 and PLC module 1-2 control clutch control servo motor 10-1 rotation, clutch control servo motor 10- 1 drives clutch rotating wheel 10-2 rotation, and clutch rotating wheel 10-2 is acted by first clutch bracing wire 10-3, the first clutch Device bracing wire 10-3 drives clutch operating connecting rod 10-4 movement, and clutch operating connecting rod 10-4 passes through second clutch bracing wire again 10-5 drives the clutch control arm of engine 12 to be tested to act, after the throw-out-of clutch control and shift before realizing shift Clutch combines control；

Step 505, main control computer 1-1 and PLC module 1-2 control Throttle Opening Control servo motor 9-1 rotation, Throttle Opening Control Servo motor 9-1 drives throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 drives engine to be tested by acceleration cable 9-3 12 air throttle movement, makes the air throttle of engine 12 to be tested open to the maximum position；

During executing step 504~step 505, the revolving speed that encoder 3-1 treats test engine 12 is measured And the revolving speed measured is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, main control computer 1- 1 the corresponding speed vj to simulated target vehicle of revolving speed nj that jth time sampling obtains is calculated according to formula, when sampling obtains When the speed of simulated target vehicle is greater than 0, start timing, and the revolving speed that jth time sampling obtains is calculated according to formula The corresponding operating range Sj of nj, when the operating range being calculated reaches the measurement distance that the starting set in step 501 accelerates When Sq, stop timing, the time recorded at this time is the pickup time simulated；Wherein, tj is main control computer 1-1 jth Secondary sampling obtains timing time when revolving speed nj；The value of j is the natural number of 1~N, N be sampling total degree and value be 1~ 200 natural number；

Step 6: carrying out surmounting acceleration motor test, detailed process to simulated target vehicle are as follows:

Step 601 surmounts the measurement distance SC of acceleration in main control computer 1-1 setting and surmounts the initial velocity of acceleration v0；

The target vehicle road resistance determined in step 1 is transferred to PLC module by step 602, main control computer 1-1 1-2, PLC module 1-2 are transmitted further to frequency converter 1-3, and frequency converter 1-3 drives in dynamometer machine 3 according to target vehicle road resistance Dynamometer machine motor 3-9 makes the work of dynamometer machine 3 under road resistance simulation model；

Step 603, starting engine 12 to be tested；

Step 604, main control computer 1-1 and PLC module 1-2 control shift control servo motor 11-1 rotation, shift control Servo motor 11-1 processed rotation drives shift rotating wheel 11-2 rotation, shift rotating wheel 11-2 by gear-shifting bracing wire 11-3 drive to The gear lever of test engine 12 acts, and is sequentially switched to engine 12 to be tested by neutral gear most high-grade, in shift process, Main control computer 1-1 and PLC module 1-2 control clutch control servo motor 10-1 rotation, clutch control servo motor 10- 1 drives clutch rotating wheel 10-2 rotation, and clutch rotating wheel 10-2 is acted by first clutch bracing wire 10-3, the first clutch Device bracing wire 10-3 drives clutch operating connecting rod 10-4 movement, and clutch operating connecting rod 10-4 passes through second clutch bracing wire again 10-5 drives the clutch control arm of engine 12 to be tested to act, after the throw-out-of clutch control and shift before realizing shift Clutch combines control；

Step 605, main control computer 1-1 and PLC module 1-2 control Throttle Opening Control servo motor 9-1 rotation, Throttle Opening Control Servo motor 9-1 drives throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 drives engine to be tested by acceleration cable 9-3 12 air throttle movement, acts the air throttle of engine 12 to be tested；

During executing step 604~step 605, the revolving speed that encoder 3-1 treats test engine 12 is measured And the revolving speed measured is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, main control computer 1- 1 the corresponding speed vj to simulated target vehicle of revolving speed nj that jth time sampling obtains is calculated according to formula, and will count every time Obtained speed is compared with the initial velocity v0 for surmounting acceleration set in step 601, and output is to Throttle Opening Control servo electricity The control signal of machine 9-1 revolving speed, Throttle Opening Control servo motor 9-1 drive throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 is logical Crossing acceleration cable 9-3 drives the air throttle of engine 12 to be tested to move, and maintains the speed to simulated target vehicle and surmounts The initial velocity v0 of acceleration；

Step 606, main control computer 1-1 and PLC module 1-2 control Throttle Opening Control servo motor 9-1 rotation, Throttle Opening Control Servo motor 9-1 drives throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 drives engine to be tested by acceleration cable 9-3 12 air throttle movement, makes the air throttle of engine 12 to be tested increase aperture, starts timing, and be calculated the according to formula Sample obtained revolving speed nj corresponding operating range Sj j times, when the operating range being calculated reach set in step 601 it is super When the measurement distance SC more accelerated, stop timing, what the time recorded at this time as simulated surmounts the acceleration time；

Step 7: carrying out to simulated target vehicle grade climbing performance engine test, detailed process are as follows:

Step 701, setting is initial to simulated target complete vehicle curb weight m, angle of gradient α, climbing on main control computer 1-1 Speed, the air throttle target opening value of engine to be tested 12, the first timing distance and the second timing distance；

After the target vehicle road resistance determined in step 1 is added mgsin α by step 702, main control computer 1-1, It is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to frequency converter 1-3, and frequency converter 1-3 adds according to target vehicle road resistance The dynamometer machine motor 3-9 in value driving dynamometer machine 3 after upper mgsin α, makes the work of dynamometer machine 3 in climbing road resistance simulation mould Under formula；

Step 703, starting engine 12 to be tested；

Step 704, main control computer 1-1 and PLC module 1-2 control shift control servo motor 11-1 rotation, shift control Servo motor 11-1 processed rotation drives shift rotating wheel 11-2 rotation, shift rotating wheel 11-2 by gear-shifting bracing wire 11-3 drive to The gear lever of test engine 12 acts, and engine 12 to be tested is made to be sequentially switched to one grade by neutral gear, main in shift process Control computer 1-1 and PLC module 1-2 control clutch control servo motor 10-1 rotation, clutch control servo motor 10-1 Clutch rotating wheel 10-2 rotation is driven, clutch rotating wheel 10-2 is acted by first clutch bracing wire 10-3, the first clutch Device bracing wire 10-3 drives clutch operating connecting rod 10-4 movement, and clutch operating connecting rod 10-4 passes through second clutch bracing wire again 10-5 drives the clutch control arm of engine 12 to be tested to act, after the throw-out-of clutch control and shift before realizing shift Clutch combines control；

Step 705, main control computer 1-1 and PLC module 1-2 control Throttle Opening Control servo motor 9-1 rotation, Throttle Opening Control Servo motor 9-1 drives throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 drives engine to be tested by acceleration cable 9-3 12 air throttle movement, acts the air throttle of engine 12 to be tested, the air throttle of engine 12 to be tested is made to reach step The air throttle target opening value set in 701；

During executing step 704~step 705, the revolving speed that encoder 3-1 treats test engine 12 is measured And the revolving speed measured is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, main control computer 1- 1 the corresponding speed vj to simulated target vehicle of revolving speed nj that jth time sampling obtains is calculated according to formula, when sampling obtains When the speed of simulated target vehicle reaches the climbing initial velocity set in step 701, start timing, and according to formula meter It calculates and obtains the corresponding operating range Sj of revolving speed nj that jth time sampling obtains, when the operating range being calculated reaches in step 701 Setting the first timing apart from when, stop timing, the time recorded at this time be the first timing time；And when stopping timing for first Between be recorded as the second beginning timing initial time, and the corresponding row of revolving speed nj that jth time sampling obtains is calculated according to formula Sail distance Sj, when the operating range being calculated reach the second timing set in step 701 apart from when, stop timing, at this time The time of record is the second timing time；Compare the second timing time and the first timing time, when the second timing time be less than etc. When the first timing time, it is judged as and is met the requirements under the angle of gradient of setting to simulated target vehicle grade climbing performance, otherwise, when When second timing time is greater than the first timing time, it is judged as to simulated target vehicle grade climbing performance under the angle of gradient of setting not It meets the requirements.

Compared with the prior art, the present invention has the following advantages:

1, the structure of inventive engine pilot system is simple, novel in design reasonable, and it is convenient and at low cost to realize.

2, engine test system of the invention realizes the function that vehicle performance test is simulated on threst stand Motility performance, fuel-economy performance etc., complete function, and it is convenient using operating.

3, engine test system of the invention, simulated inertia are the sum of inertia and electrical analogue inertia of dynamometer machine, measurement of power The inertia of machine is the inertia of the inertial flywheel, the inertia of output shaft of dynamometer machine motor, the inertia of flywheel shaft shaft coupling and survey The sum of the inertia of function machine main spindle coupling, electrical analogue inertia are control by revolving speed of the control system to dynamometer machine motor The inertia arrived can be realized the accurate of the inertia for treating simulated target vehicle by the inertia and electrical analogue inertia of the dynamometer machine Simulation；The torque of dynamometer machine motor is controlled by control system, additionally it is possible to realize that the speed for treating simulated target vehicle is corresponding The simulation of road resistance solves the problems, such as that existing dynamometer machine cannot correctly carry out vehicle inertia simulation on engine pedestal.

4, clutch control mechanism of the invention is made of servo motor, lever mechanism, drag-line, can by lever mechanism So that servo motor pulls engine clutch with lesser power, the flexible operating to subject engine clutch is realized.

5, of the invention practical, cost of implementation is low, and using effect is good, convenient for promoting the use of.

In conclusion the present invention is novel in design, rationally easy to install and use, cost of implementation is low, and functional reliability is high, uses Service life is long, and the simulation of vehicle performance can be carried out effectively on engine pedestal, reduces development experiments cost, practical, uses Effect is good, convenient for promoting the use of；When solving engine test in the prior art, vehicle inertia simulation cannot be accurately carried out Defect.

Below by drawings and examples, technical scheme of the present invention will be described in further detail.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of engine test system in Example 1 and Example 2 of the present invention.

Fig. 2 is the connection relationship diagram of control system and other each elements in Example 1 and Example 2 of the present invention.

Fig. 3 is the structural schematic diagram of dynamometer machine in the embodiment of the present invention 1.

Fig. 4 is the main view of monoblock type inertial flywheel in the embodiment of the present invention 1.

Fig. 5 is the left view of Fig. 4.

Fig. 6 is the structural schematic diagram of dynamometer machine in the embodiment of the present invention 2.

Fig. 7 is the main view of monoblock type inertial flywheel in the embodiment of the present invention 2.

Fig. 8 is the left view of Fig. 7.

Description of symbols:

1-control system；1-1-main control computer；1-2-PLC module；1-3-frequency converter；2-engine speed pass Sensor；3-dynamometer machines；3-1-encoder；3-2-flywheel bearing support；3-3-monoblock type inertial flywheel；3-31-monoblock type Flywheel body；3-32-integral flywheel mounting hole；3-4-connection flywheel shaft；3-5-the second inertial flywheel bearing support；3- 6-flywheel shaft shaft couplings；3-7-pedestal；3-8-first motor bearing support；3-9-dynamometer machine motor；3-10-power sensing Device；The support of the second motor bearings of 3-11-；3-12-dynamometer machine main spindle coupling；3-13-flanged type inertial flywheel；3-131— Flanged type flywheel body；3-132-flanged type flywheel mounting hole；3-133-loss of weight technology groove；4-gas leak meters；5-oil Consume instrument；The first temperature sensing of 6-1-；6-2-second temperature sensing；6-3-third temperature sensing；The 4th temperature sensing of 6-4-； 7-Air/Fuel ratio analysis instrument；8-1-first pressure sensor；8-2-second pressure sensor；8-3-third pressure sensor； 9-throttle operation mechanisms；9-1-Throttle Opening Control servo motor；9-2-throttle rotating wheel；9-3-acceleration cable；10-clutches Device operating mechanism；10-1-clutch control servo motor；10-2-clutch rotating wheel；10-3-first clutch bracing wire； 10-4-clutch operating connecting rod；10-5-second clutch bracing wire；11-Gear shift operation mechanisms；11-1-shift controls servo Motor；11-2-shift rotating wheel；11-3-gear-shifting bracing wire；12-installation engines to be tested；13-engine pedestals；

Specific embodiment embodiment 1 is as shown in Figure 1, engine test system of the invention, including dynamometer machine 3, sensing Detection system, control system 1 and the engine pedestal 13 for installing engine 12 to be tested, and for operating hair to be tested Throttle operation mechanism 9, clutch operating mechanism 10 and the Gear shift operation mechanism 11 of motivation 12；

In conjunction with Fig. 3, the dynamometer machine 3 includes pedestal 3-7 and the first inertial flywheel axis being fixedly connected on pedestal 3-7 Support 3-2, the second inertial flywheel bearing support 3-5, first motor bearing support 3-8 and the second motor bearings support 3-11 are held, Flywheel shaft 3-4 is installed on the first inertial flywheel bearing support 3-2 and the second inertial flywheel bearing support 3-5, is located at institute It states and is connected on one section of flywheel shaft 3-4 between the first inertial flywheel bearing support 3-2 and the second inertial flywheel bearing support 3-5 Inertial flywheel is provided with dynamometer machine motor 3- between the first motor bearing support 3-8 and the second motor bearings support 3-11 9, the both ends output shaft of the dynamometer machine motor 3-9 is separately mounted to first motor bearing support 3-8 and the second motor bearings branch It supports on 3-11, output shaft of the dynamometer machine motor 3-9 close to the inertial flywheel side by flywheel shaft shaft coupling 3-6 and flies Wheel shaft 3-4 connection, the dynamometer machine motor 3-9 are connected on the output shaft far from the inertial flywheel side for connecting wait try The dynamometer machine main spindle coupling 3-12 of the output shaft of motivation 12 is issued after examination and approval, the end of the flywheel shaft 3-4 is connected with for flywheel The encoder 3-1 that the revolving speed of axis 3-4 measures, one end is provided on the shell of the dynamometer machine motor 3-9 and measurement of power is electromechanical The shell of machine 3-9 is fixedly connected, the other end is fixedly connected with pedestal 3-7 and is used to survey the torque of dynamometer machine motor 3-9 The force snesor 3-10 of amount；

As shown in Figure 1, the throttle operation mechanism 9 includes Throttle Opening Control servo motor 9-1, throttle rotating wheel 9-2 and oil Door bracing wire 9-3, the rotating wheel 9-2 are fixedly connected on the output shaft of Throttle Opening Control servo motor 9-1, the acceleration cable 9- 3 are wrapped on throttle rotating wheel 9-2, and the air throttle of the engine 12 to be tested is connect with acceleration cable 9-3；

As shown in Figure 1, the clutch operating mechanism 10 includes clutch control servo motor 10-1, clutch rotating wheel 10-2, first clutch bracing wire 10-3, clutch operating connecting rod 10-4 and second clutch bracing wire 10-5, the clutch rotation Wheel 10-2 is fixedly connected on the output shaft of clutch control servo motor 10-1, one end of the first clutch bracing wire 10-3 It is wrapped on clutch rotating wheel 10-2, the other end and clutch operating connecting rod 10-4 of the first clutch bracing wire 10-3 connects It connects, one end of the second clutch bracing wire 10-5 is connect with clutch operating connecting rod 10-4, the engine 12 to be tested Clutch control arm is connect with the other end of second clutch bracing wire 10-5；

As shown in Figure 1, the Gear shift operation mechanism 11 include shift control servo motor 11-1, shift rotating wheel 11-2 and Gear-shifting bracing wire 11-3, the shift rotating wheel 11-2 is fixedly connected on the output shaft of shift control servo motor 11-1, described Gear-shifting bracing wire 11-3 is wrapped on shift rotating wheel 11-2, and the gear lever and gear-shifting bracing wire 11-3 of the engine 12 to be tested connect It connects；

In conjunction with Fig. 2, the control system 1 includes main control computer 1-1, the PLC module 1- to connect with main control computer 1-1 2 and the frequency converter 1-3, the encoder 3-1 and force snesor 3-10 that connect with PLC module 1-2 it is defeated with PLC module 1-2 Enter end connection, the Throttle Opening Control servo motor 9-1, clutch control servo motor 10-1 and shift control servo motor 11-1 It is connect with the output end of PLC module 1-2, the dynamometer machine motor 3-9 is connect with frequency converter 1-3；

In conjunction with Fig. 2, the sensing and detecting system includes being detected for treating the fuel consumption of test engine 12 Fuel consumption meter 5, the fuel consumption meter 5 connect with the input terminal of PLC module 1-2.

As shown in Fig. 2, the sensing and detecting system further includes the crankshaft for treating test engine 12 in the present embodiment Gas leak meter 4 that case air leak amount is detected, the sky detected for treating air-fuel ratio when test engine 12 burns Fire than analyzer 7, for treat the first temperature sensor 6-1 that the spark-plug gasket temperature of test engine 12 detected, Second temperature sensor 6-2 that oil temperature for treating test engine 12 is detected, for treating test engine Third temperature sensor 6-3 that 12 intake air temperature is detected, it is examined for treating the fuel oil temperature of test engine 12 The 4th temperature sensor 6-4 surveyed, the first pressure sensor detected for treating the admission pressure of test engine 12 8-1, for treating second pressure sensor 8-2 that 12 pressure at expulsion of test engine detected, for starting to be tested The third pressure sensor 8-3 that the fuel pressure of machine 12 is detected and the pulse revolving speed for treating test engine 12 carry out The engine speed sensor 2 of detection, the gas leak meter 4 and Air/Fuel ratio analysis instrument 7 are connect with main control computer 1-1, The first temperature sensor 6-1, second temperature sensor 6-2, third temperature sensor 6-3, the 4th temperature sensor 6-4, First pressure sensor 8-1, second pressure sensor 8-2, third pressure sensor 8-3 and engine speed sensor 2 with The input terminal of PLC module 1-2 connects.

As shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, the inertial flywheel is monoblock type inertial flywheel 3-3, described whole Body formula inertial flywheel 3-3 includes discoidal integral flywheel ontology 3-31 and the center that integral flywheel ontology 3-31 is arranged in Integral flywheel mounting hole 3-32 at position and for connecting flywheel shaft 3-4.

In the present embodiment, the dynamometer machine motor 3-9 is frequency conversion timing AC motor.

In the present embodiment, the encoder 3-1 is optical-electricity encoder.

Engine test method of the invention, comprising the following steps:

The detailed process of target vehicle road resistance being modeled is determined in the present embodiment, in step 1 are as follows:

Step 101 is set on main control computer 1-1 to the rim diameter Drim of simulated target vehicle, to simulated target The aspect ratio Hflat-ratio of the tire of vehicle, to the deflected width of tyre W of simulated target vehicle and to simulated target vehicle Final drive ratio i；And front-wheel rolling resistance a0 and air drag system of the setting to simulated target vehicle on main control computer 1-1 Number b；

Dynamometer machine motor 9 is calculated corresponding to whole to simulated target according to formula in step 102, main control computer 1-1 machine The maximum (top) speed nmax of the max. speed vmax of vehicle, wherein r be to simulated target vehicle driving wheel rolling radius and

Dynamometer machine motor 9 is corresponded to the max. speed vmax to simulated target vehicle by step 103, main control computer 1-1 Maximum (top) speed nmax be transferred to PLC module 1-2, PLC module 1-2 is transmitted further to frequency converter 1-3, and frequency converter 1-3 drives measurement of power Dynamometer machine motor 3-9 in machine 3 runs to and corresponds to after the maximum (top) speed of simulated target vehicle max. speed, stops to survey The revolving speed of function electromechanics machine 3-9 is controlled, and slides into the simulation of dynamometer machine 3 on road from max. speed to simulated target vehicle The taxiing procedures of stationary state；

It slides in simulation process, the revolving speed that encoder 3-1 is measured and will be measured to the revolving speed of dynamometer machine motor 3-9 It is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, and main control computer 1-1 is calculated according to formula The corresponding speed vj to simulated target vehicle of revolving speed nj obtained to jth time sampling, further according to formula F E, j=a0+b × vj2 Speed vj corresponding road resistance FE, the j to simulated target vehicle is calculated, road resistance is calculated further according to formula FE, j corresponding engine output shaft torque ME, j, then, for main control computer 1-1 by road resistance FE, the corresponding engine of j is defeated Shaft torque ME, j are transferred to PLC module 1-2, and PLC module 1-2 is transmitted further to frequency converter 1-3, and frequency converter 1-3 is according to road roadlock Power FE, j corresponding engine output shaft torque ME, j change the size of the exciting current of its output, drive the survey in dynamometer machine 3 Function electromechanics machine 3-9 makes the torque and road resistance FE of dynamometer machine motor 3-9, corresponding engine output shaft torque ME, the j phase of j Deng；Meanwhile force snesor 3-10 measures the torque of dynamometer machine motor 3-9 and measurement torque is transferred to PLC module 1- 2, PLC module 1-2 are transmitted further to main control computer 1-1, and main control computer 1-1 carries out recording and storage to measurement torque；

Step 104, main control computer 1-1 are by the corresponding measurement torque of the received speed vj to simulated target vehicle The corresponding road resistance FE of the speed vj to simulated target vehicle, the corresponding engine output shaft of j is calculated with according to formula Torque ME, j is compared, when the measurement torque that n times sample is not with the engine output shaft torque difference being calculated When in the range of the 2%~10% of the engine output shaft torque being calculated, step 105 is repeated, until n times are adopted The measurement torque that sample obtains is turned round in the engine output shaft being calculated with the engine output shaft torque difference being calculated In the range of the 2%~10% of square；

Dynamometer machine motor 9 is corresponded to the max. speed vmax to simulated target vehicle by step 105, main control computer 1-1 Maximum (top) speed nmax be transferred to PLC module 1-2, PLC module 1-2 is transmitted further to frequency converter 1-3, and frequency converter 1-3 drives measurement of power Dynamometer machine motor 3-9 in machine 3, run to dynamometer machine motor 9 correspond to simulated target vehicle max. speed vmax most After big revolving speed nmax, stopping controls the revolving speed of dynamometer machine motor 3-9, and the simulation of dynamometer machine 3 is made to exist to simulated target vehicle The taxiing procedures of stationary state are slided on road from max. speed；

It slides in simulation process, the revolving speed that encoder 3-1 is measured and will be measured to the revolving speed of dynamometer machine motor 3-9 It is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, and main control computer 1-1 is calculated according to formula The corresponding speed vj to simulated target vehicle of revolving speed nj obtained to jth time sampling, and inquire be stored therein wait simulate The speed vj corresponding last time of target vehicle slides the measurement torque in simulation process, and the last time is slided in simulation process In measurement torque be transferred to PLC module 1-2, PLC module 1-2 is transmitted further to frequency converter 1-3, and frequency converter 1-3 is according to the last time The size that the measurement torque in simulation process changes the exciting current of its output is slided, drives the measurement of power in dynamometer machine 3 electromechanical Machine 3-9 makes the torque of dynamometer machine motor 3-9 and last time slide the measurement moment of torsion etc. in simulation process；Meanwhile force snesor 3-10 measures the torque of dynamometer machine motor 3-9 and measurement torque is transferred to PLC module 1-2, and PLC module 1-2 is passed again It is defeated by main control computer 1-1, main control computer 1-1 carries out recording and storage to measurement torque；

The measurement torque that last time executes step 105 recording and storage is determined as by step 106, main control computer 1-1 The target vehicle road resistance being modeled.

Step 402, starting engine 12 to be tested；

Step 503, starting engine 12 to be tested；

Step 603, starting engine 12 to be tested；

Step 703, starting engine 12 to be tested；

In the present embodiment, engine test method of the invention is further comprising the steps of:

Step 8: carrying out to simulated target vehicle constant speed fuel consumption engine test, detailed process are as follows:

Step 801 sets constant speed fuel consumption measurement speed and distance on main control computer 1-1；

The target vehicle road resistance determined in step 1 is transferred to PLC module by step 802, main control computer 1-1 1-2, PLC module 1-2 are transmitted further to frequency converter 1-3, and frequency converter 1-3 drives in dynamometer machine 3 according to target vehicle road resistance Dynamometer machine motor 3-9 makes the work of dynamometer machine 3 under road resistance simulation model；

Step 803, starting engine 12 to be tested；

Step 804, main control computer 1-1 and PLC module 1-2 control shift control servo motor 11-1 rotation, shift control Servo motor 11-1 processed rotation drives shift rotating wheel 11-2 rotation, shift rotating wheel 11-2 by gear-shifting bracing wire 11-3 drive to The gear lever of test engine 12 acts, and is sequentially switched to engine 12 to be tested by neutral gear most high-grade, in shift process, Main control computer 1-1 and PLC module 1-2 control clutch control servo motor 10-1 rotation, clutch control servo motor 10- 1 drives clutch rotating wheel 10-2 rotation, and clutch rotating wheel 10-2 is acted by first clutch bracing wire 10-3, the first clutch Device bracing wire 10-3 drives clutch operating connecting rod 10-4 movement, and clutch operating connecting rod 10-4 passes through second clutch bracing wire again 10-5 drives the clutch control arm of engine 12 to be tested to act, after the throw-out-of clutch control and shift before realizing shift Clutch combines control；

Step 805, main control computer 1-1 and PLC module 1-2 control Throttle Opening Control servo motor 9-1 rotation, Throttle Opening Control Servo motor 9-1 drives throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 drives engine to be tested by acceleration cable 9-3 12 air throttle movement, acts the air throttle of engine 12 to be tested, the air throttle of engine 12 to be tested is made to reach step The corresponding target throttle opening value of constant speed fuel consumption measurement speed set in 801；

During executing step 804~step 805, the revolving speed that encoder 3-1 treats test engine 12 is measured And the revolving speed measured is transferred to PLC module 1-2, PLC module 1-2 is transmitted further to main control computer 1-1, main control computer 1- 1 the corresponding speed vj to simulated target vehicle of revolving speed nj that revolving speed jth time sampling obtains is calculated according to formula, and will be every For the secondary speed being calculated compared with the constant speed fuel consumption measurement speed set in step 801, Throttle Opening Control is watched in output The control signal of motor 9-1 revolving speed is taken, Throttle Opening Control servo motor 9-1 drives throttle rotating wheel 9-2 rotation, throttle rotating wheel 9- 2 drive the air throttle of engine 12 to be tested to move by acceleration cable 9-3, maintain the speed to simulated target vehicle and set Fixed constant speed fuel consumption measures speed；

Step 806 starts timing, and according to formula be calculated the corresponding traveling of revolving speed nj that jth time sampling obtains away from From Sj, when the operating range being calculated reach the constant speed fuel consumption measurement set in step 801 apart from when, stop timing；

During step 806, the fuel consumption that fuel consumption meter 5 treats simulated target vehicle is measured, and will measurement The obtained fuel consumption to simulated target vehicle is transferred to main control computer 1-1；

Step 807, the constant speed fuel consumption changed the step in 801 measure speed, repeat step 802~step 806, Measurement obtains the corresponding constant speed fuel consumption to simulated target vehicle of multiple speeds；

Step 9: carrying out to simulated target vehicle operating condition method fuel consumption engine test, detailed process are as follows:

Step 901, on main control computer 1-1 setting to simulated target vehicle condition model (including ECER40 operating condition, WMTC operating condition and the customized operating condition of user)；

The target vehicle road resistance determined in step 1 is transferred to PLC module by step 902, main control computer 1-1 1-2, PLC module 1-2 are transmitted further to frequency converter 1-3, and frequency converter 1-3 drives in dynamometer machine 3 according to target vehicle road resistance Dynamometer machine motor 3-9 makes the work of dynamometer machine 3 under road resistance simulation model；

Step 903, starting engine 12 to be tested；

Step 904, main control computer 1-1 are to throttle operation mechanism 9, clutch operating mechanism 10 and Gear shift operation mechanism 11 Controlled, set in simulation steps 901 to simulated target vehicle condition model；Main control computer 1-1 and PLC module 1-2 Control shift control servo motor 11-1 rotation, shift control servo motor 11-1 rotation drive shift rotating wheel 11-2 rotation, Shift rotating wheel 11-2 drives the gear lever of engine 12 to be tested to act by gear-shifting bracing wire 11-3, makes engine 12 to be tested Carry out gear shift operation；In shift process, main control computer 1-1 and PLC module 1-2 control clutch control servo motor 10-1 Rotation, clutch control servo motor 10-1 drive clutch rotating wheel 10-2 rotation, and clutch rotating wheel 10-2 passes through first Clutch cable 10-3 movement, first clutch bracing wire 10-3 drive clutch operating connecting rod 10-4 movement, and clutch operating connects Bar 10-4 passes through second clutch bracing wire 10-5 again and the clutch control arm of engine 12 to be tested is driven to act, before realizing shift Throw-out-of clutch control with shift after clutch in conjunction with control；Main control computer 1-1 and PLC module 1-2 controls throttle control Servo motor 9-1 rotation processed, Throttle Opening Control servo motor 9-1 drive throttle rotating wheel 9-2 rotation, and throttle rotating wheel 9-2 passes through Acceleration cable 9-3 drives the air throttle of engine 12 to be tested to move, and acts the air throttle of engine 12 to be tested, makes wait try The air throttle for issuing after examination and approval motivation 12 reaches the corresponding target section of each point speed on the performance curve of the condition model set in step 901 Valve opening angle value；

During step 904, the fuel consumption that fuel consumption meter 5 treats simulated target vehicle is measured, and will measurement The obtained fuel consumption to simulated target vehicle is transferred to main control computer 1-1.

Embodiment 2

As shown in Fig. 6, Fig. 7 and Fig. 8, the present embodiment unlike the first embodiment: the inertial flywheel be flanged type inertia Flywheel 3-13, the flanged type inertial flywheel 3-13 include discoidal flanged type flywheel body 3-131 and are arranged in flanged type The center position of flywheel body 3-131 and the flanged type flywheel mounting hole 3-132 for being used to connect flywheel shaft 3-4, the flange The loss of weight technology groove 3-133 of circular ring shape is provided on the two sides side of formula flywheel body 3-131.Remaining structure is and embodiment 1 is identical.By the way that loss of weight technology groove 3-133 is arranged, the inertial flywheel of large radius can be realized with less material, and then can be real Now compared with the simulation of large inertia, material and cost have been saved, and has expanded application range.

The engine test method of the present embodiment is same as Example 1.

The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention In the protection scope of art scheme.

Claims

1. a kind of engine test system, it is characterised in that: including dynamometer machine (3), sensing and detecting system, control system (1) and Throttle behaviour for installing the engine pedestal (13) of engine to be tested (12), and for operating engine to be tested (12) Make mechanism (9), clutch operating mechanism (10) and Gear shift operation mechanism (11)；

The dynamometer machine (3) includes pedestal (3-7) and the first inertial flywheel bearing support being fixedly connected on pedestal (3-7) (3-2), the second inertial flywheel bearing support (3-5), first motor bearing support (3-8) and the second motor bearings support (3- 11) flywheel shaft (3-, is installed in the first inertial flywheel bearing support (3-2) and the second inertial flywheel bearing support (3-5) 4), one section of flywheel between the first inertial flywheel bearing support (3-2) and the second inertial flywheel bearing support (3-5) Inertial flywheel is connected on axis (3-4), between the first motor bearing support (3-8) and the second motor bearings support (3-11) It is provided with dynamometer machine motor (3-9), the both ends output shaft of the dynamometer machine motor (3-9) is separately mounted to first motor bearing branch It supports on (3-8) and the second motor bearings support (3-11), the dynamometer machine motor (3-9) is defeated close to the inertial flywheel side Shaft is connect by flywheel shaft shaft coupling (3-6) with flywheel shaft (3-4), and the dynamometer machine motor (3-9) flies far from the inertia Take turns the dynamometer machine main spindle coupling (3- that the output shaft for connecting engine to be tested (12) is connected on the output shaft of side 12), the end of the flywheel shaft (3-4) is connected with the encoder (3-1) measured for the revolving speed to flywheel shaft (3-4), Be provided on the shell of the dynamometer machine motor (3-9) one end be fixedly connected with the shell of dynamometer machine motor (3-9), the other end with Pedestal (3-7) is fixedly connected and the force snesor (3-10) for measuring to the torque of dynamometer machine motor (3-9)；

The throttle operation mechanism (9) includes Throttle Opening Control servo motor (9-1), throttle rotating wheel (9-2) and acceleration cable (9- 3), the rotating wheel (9-2) is fixedly connected on the output shaft of Throttle Opening Control servo motor (9-1), the acceleration cable (9-3) It is wrapped on throttle rotating wheel (9-2), the air throttle of the engine (12) to be tested is connect with acceleration cable (9-3)；

The clutch operating mechanism (10) includes clutch control servo motor (10-1), clutch rotating wheel (10-2), One clutch cable (10-3), clutch operating connecting rod (10-4) and second clutch bracing wire (10-5), the clutch rotation Wheel (10-2) is fixedly connected on the output shaft of clutch control servo motor (10-1), the first clutch bracing wire (10-3) One ends wound on clutch rotating wheel (10-2), the other end and clutch operating of the first clutch bracing wire (10-3) Connecting rod (10-4) connection, one end of the second clutch bracing wire (10-5) is connect with clutch operating connecting rod (10-4), described The clutch control arm of engine (12) to be tested is connect with the other end of second clutch bracing wire (10-5)；

The Gear shift operation mechanism (11) includes shift control servo motor (11-1), shift rotating wheel (11-2) and gear-shifting bracing wire (11-3), shift rotating wheel (11-2) is fixedly connected on the output shaft of shift control servo motor (11-1), described to change Gear bracing wire (11-3) is wrapped in shift rotating wheel (11-2), the gear lever and gear-shifting bracing wire of the engine (12) to be tested (11-3) connection；

The control system (1) include main control computer (1-1), the PLC module (1-2) to connect with main control computer (1-1) and The frequency converter (1-3) to connect with PLC module (1-2), the encoder (3-1) and force snesor (3-10) with PLC module (1- 2) input terminal connection, the Throttle Opening Control servo motor (9-1), clutch control servo motor (10-1) and shift control are watched It takes motor (11-1) to connect with the output end of PLC module (1-2), the dynamometer machine motor (3-9) and frequency converter (1-3) are even It connects；

The sensing and detecting system includes the fuel consumption meter detected for treating the fuel consumption of test engine (12) (5), the fuel consumption meter (5) connect with the input terminal of PLC module (1-2).

2. a kind of engine test system described in accordance with the claim 1, it is characterised in that: the sensing and detecting system further includes Gas leak meter (4) that crankcase gas leakage for treating test engine (12) is detected, for starting to be tested Air/Fuel ratio analysis instrument (7), the spark plug for treating test engine (12) that air-fuel ratio when machine (12) burns is detected The first temperature sensor (6-1) that washer temperature is detected is examined for treating the oil temperature of test engine (12) The second temperature sensor (6-2) of survey is passed for treating the third temperature that the intake air temperature of test engine (12) is detected Sensor (6-3), for treating the 4th temperature sensor (6-4) that the fuel oil temperature of test engine (12) detected, being used for Treat first pressure sensor (8-1) that the admission pressure of test engine (12) detected, for treating test engine (12) pressure at expulsion is detected second pressure sensor (8-2), for treat the fuel pressure of test engine (12) into The engine that the third pressure sensor (8-3) of row detection and the pulse revolving speed for treating test engine (12) are detected Speed probe (2), the gas leak meter (4) and Air/Fuel ratio analysis instrument (7) are connect with main control computer (1-1), described First temperature sensor (6-1), second temperature sensor (6-2), third temperature sensor (6-3), the 4th temperature sensor (6- 4), first pressure sensor (8-1), second pressure sensor (8-2), third pressure sensor (8-3) and engine speed pass Sensor (2) is connect with the input terminal of PLC module (1-2).

3. a kind of engine test system described in accordance with the claim 1, it is characterised in that: the inertial flywheel is used for monoblock type Property flywheel (3-3), the monoblock type inertial flywheel (3-3) include discoidal integral flywheel ontology (3-31) and be arranged whole The center position of body formula flywheel body (3-31) and the integral flywheel mounting hole (3-32) for being used to connect flywheel shaft (3-4).

4. a kind of engine test system described in accordance with the claim 1, it is characterised in that: the inertial flywheel is used for flanged type Property flywheel (3-13), the flanged type inertial flywheel (3-13) include discoidal flanged type flywheel body (3-131) and setting Flanged type flywheel body (3-131) center position and for connecting the flanged type flywheel mounting hole (3- of flywheel shaft (3-4) 132) the loss of weight technology groove (3-133) of circular ring shape, is provided on the two sides side of the flanged type flywheel body (3-131).

5. according to a kind of engine test system described in claim 3 or 4, it is characterised in that: the dynamometer machine motor (3-9) For frequency conversion timing AC motor.

6. according to a kind of engine test system described in claim 3 or 4, it is characterised in that: the encoder (3-1) is light Electric-type encoder.

7. a kind of utilize a kind of engine test system as described in claim 1, which is characterized in that this method includes following step Rapid: the application method of the system is as follows:

Step 1: determining the corresponding road resistance of vehicle to simulated target vehicle and being stored in main control computer (1-1)；

Step 2: engine to be tested (12) is fixed on engine pedestal (13), and by the defeated of engine to be tested (12) Shaft is connect with dynamometer machine main spindle coupling (3-12)；

Step 3: the air throttle of engine to be tested (12) is connect with the acceleration cable (9-3) in throttle operation mechanism (9), By the second clutch bracing wire (10-5) in the clutch control arm of engine to be tested (12) and clutch operating mechanism (10) Connection, and the gear lever of engine to be tested (12) is connect with the gear-shifting bracing wire (11-3) in Gear shift operation mechanism (11)；

Step 401, main control computer (1-1) are by the corresponding road roadlock of the vehicle to simulated target vehicle determined in step 1 Power is transferred to PLC module (1-2), and PLC module (1-2) is transmitted further to frequency converter (1-3), and frequency converter (1-3) drives dynamometer machine (3) In dynamometer machine motor (3-9), make dynamometer machine (3) work under road resistance simulation model；

Step 402, starting engine (12) to be tested；

Step 403, main control computer (1-1) and PLC module (1-2) control shift control servo motor (11-1) rotation, shift It controls servo motor (11-1) rotation and drives shift rotating wheel (11-2) rotation, shift rotating wheel (11-2) passes through gear-shifting bracing wire (11-3) drives the gear lever movement of engine (12) to be tested, and engine to be tested (12) is made to be sequentially switched to highest by neutral gear Shelves, in shift process, main control computer (1-1) and PLC module (1-2) control clutch control servo motor (10-1) turn Dynamic, clutch control servo motor (10-1) drives clutch rotating wheel (10-2) rotation, and clutch rotating wheel (10-2) passes through First clutch bracing wire (10-3) movement, first clutch bracing wire (10-3) drive clutch operating connecting rod (10-4) movement, from Clutch operator link (10-4) drives the clutch control of engine (12) to be tested by second clutch bracing wire (10-5) again Arm movement, the throw-out-of clutch control before realizing shift control in conjunction with the clutch after shift；

Step 404, main control computer (1-1) and PLC module (1-2) control Throttle Opening Control servo motor (9-1) rotation, throttle control Servo motor (9-1) processed drives throttle rotating wheel (9-2) rotation, throttle rotating wheel (9-2) by acceleration cable (9-3) drive to The air throttle of test engine (12) moves, and the air throttle of engine to be tested (12) is made to open to the maximum position；

In step 405, engine to be tested (12) course of work, encoder (3-1) treat the revolving speed of test engine (12) into Row measures and is transferred to the revolving speed measured PLC module (1-2), and PLC module (1-2) is transmitted further to main control computer (1-1), When the multiple rotating speed difference that main control computer (1-1) determines that it is continuously received is not more than 20r/min~70r/min, determine Stable the max speed is had reached to simulated target vehicle for what is be modeled, at this point, main control computer (1-1) is calculated according to formula The max speed to simulated target vehicle being modeled；Wherein, r is the rolling radius of the driving wheel to simulated target vehicle And D_rimFor the rim diameter to simulated target vehicle, H_flat-ratioFor the aspect ratio of the tire to simulated target vehicle, W be to The deflected width of tyre of simulated target vehicle；I is the final drive ratio to simulated target vehicle；n_maxFor encoder at this time (3-1) The dynamometer machine motor (9) detected corresponds to the max. speed v to simulated target vehicle_maxMaximum (top) speed；

Step 501, the measurement distance S that setting starting accelerates on main control computer (1-1)_q；

The target vehicle road resistance determined in step 1 is transferred to PLC module (1- by step 502, main control computer (1-1) 2), PLC module (1-2) is transmitted further to frequency converter (1-3), and frequency converter (1-3) drives dynamometer machine according to target vehicle road resistance (3) the dynamometer machine motor (3-9) in makes dynamometer machine (3) work under road resistance simulation model；

Step 503, starting engine (12) to be tested；

Step 504, main control computer (1-1) and PLC module (1-2) control shift control servo motor (11-1) rotation, shift It controls servo motor (11-1) rotation and drives shift rotating wheel (11-2) rotation, shift rotating wheel (11-2) passes through gear-shifting bracing wire (11-3) drives the gear lever movement of engine (12) to be tested, and engine to be tested (12) is made to be sequentially switched to highest by neutral gear Shelves, in shift process, main control computer (1-1) and PLC module (1-2) control clutch control servo motor (10-1) turn Dynamic, clutch control servo motor (10-1) drives clutch rotating wheel (10-2) rotation, and clutch rotating wheel (10-2) passes through First clutch bracing wire (10-3) movement, first clutch bracing wire (10-3) drive clutch operating connecting rod (10-4) movement, from Clutch operator link (10-4) drives the clutch control of engine (12) to be tested by second clutch bracing wire (10-5) again Arm movement, the throw-out-of clutch control before realizing shift control in conjunction with the clutch after shift；

Step 505, main control computer (1-1) and PLC module (1-2) control Throttle Opening Control servo motor (9-1) rotation, throttle control Servo motor (9-1) processed drives throttle rotating wheel (9-2) rotation, throttle rotating wheel (9-2) by acceleration cable (9-3) drive to The air throttle of test engine (12) moves, and the air throttle of engine to be tested (12) is made to open to the maximum position；

During executing step 504~step 505, the revolving speed that encoder (3-1) treats test engine (12) is measured And be transferred to the revolving speed measured PLC module (1-2), PLC module (1-2) is transmitted further to main control computer (1-1), master control meter The revolving speed n that jth time sampling obtains is calculated according to formula for calculation machine (1-1)_jThe corresponding speed v to simulated target vehicle_j, when Sample obtain when the speed of simulated target vehicle is greater than 0, start timing, and jth is calculated according to formula and time is sampled The revolving speed n arrived_jCorresponding operating range S_j, when the operating range being calculated reaches the survey that the starting set in step 501 accelerates Span is from S_qWhen, stop timing, the time recorded at this time is the pickup time simulated；Wherein, t_jFor main control computer (1-1) jth time sampling obtains revolving speed n_jWhen timing time；The value of j is the natural number of 1~N, and N is sampling total degree and takes The natural number that value is 1~200；

Step 601, the measurement distance S for surmounting acceleration in main control computer (1-1) setting_CWith the initial velocity v for surmounting acceleration₀；

The target vehicle road resistance determined in step 1 is transferred to PLC module (1- by step 602, main control computer (1-1) 2), PLC module (1-2) is transmitted further to frequency converter (1-3), and frequency converter (1-3) drives dynamometer machine according to target vehicle road resistance (3) the dynamometer machine motor (3-9) in makes dynamometer machine (3) work under road resistance simulation model；

Step 603, starting engine (12) to be tested；

Step 604, main control computer (1-1) and PLC module (1-2) control shift control servo motor (11-1) rotation, shift It controls servo motor (11-1) rotation and drives shift rotating wheel (11-2) rotation, shift rotating wheel (11-2) passes through gear-shifting bracing wire (11-3) drives the gear lever movement of engine (12) to be tested, and engine to be tested (12) is made to be sequentially switched to highest by neutral gear Shelves, in shift process, main control computer (1-1) and PLC module (1-2) control clutch control servo motor (10-1) turn Dynamic, clutch control servo motor (10-1) drives clutch rotating wheel (10-2) rotation, and clutch rotating wheel (10-2) passes through First clutch bracing wire (10-3) movement, first clutch bracing wire (10-3) drive clutch operating connecting rod (10-4) movement, from Clutch operator link (10-4) drives the clutch control of engine (12) to be tested by second clutch bracing wire (10-5) again Arm movement, the throw-out-of clutch control before realizing shift control in conjunction with the clutch after shift；

Step 605, main control computer (1-1) and PLC module (1-2) control Throttle Opening Control servo motor (9-1) rotation, throttle control Servo motor (9-1) processed drives throttle rotating wheel (9-2) rotation, throttle rotating wheel (9-2) by acceleration cable (9-3) drive to The air throttle of test engine (12) moves, and acts the air throttle of engine to be tested (12)；

During executing step 604~step 605, the revolving speed that encoder (3-1) treats test engine (12) is measured And be transferred to the revolving speed measured PLC module (1-2), PLC module (1-2) is transmitted further to main control computer (1-1), master control meter The revolving speed n that jth time sampling obtains is calculated according to formula for calculation machine (1-1)_jThe corresponding speed v to simulated target vehicle_j, and The initial velocity v for surmounting acceleration that will be set in the speed being calculated every time and step 601₀It compares, exports to throttle control The control signal of servo motor (9-1) revolving speed processed, Throttle Opening Control servo motor (9-1) drive throttle rotating wheel (9-2) rotation, oil Door rotating wheel (9-2) drives the air throttle movement of engine (12) to be tested by acceleration cable (9-3), makes whole to simulated target The speed of vehicle maintains the initial velocity v for surmounting acceleration₀；

Step 606, main control computer (1-1) and PLC module (1-2) control Throttle Opening Control servo motor (9-1) rotation, throttle control Servo motor (9-1) processed drives throttle rotating wheel (9-2) rotation, throttle rotating wheel (9-2) by acceleration cable (9-3) drive to The air throttle of test engine (12) moves, and the air throttle of engine to be tested (12) is made to increase aperture, starts timing, and according to The revolving speed n that jth time sampling obtains is calculated in formula_jCorresponding operating range S_j, when the operating range being calculated reaches step The measurement distance S for surmounting acceleration set in 601_CWhen, stop timing, the time recorded at this time is to simulate when surmounting acceleration Between；

Step 701, setting is initial fast to simulated target complete vehicle curb weight m, angle of gradient α, climbing on main control computer (1-1) Degree, the air throttle target opening value of engine to be tested (12), the first timing distance and the second timing distance；

Step 702, main control computer (1-1) plus after mgsin α, pass the target vehicle road resistance determined in step 1 It is defeated by PLC module (1-2), PLC module (1-2) is transmitted further to frequency converter (1-3), and frequency converter (1-3) is according to target vehicle road Resistance makes dynamometer machine (3) work in crawling lane plus the dynamometer machine motor (3-9) in value driving dynamometer machine (3) after mgsin α Under roadlock power simulation model；

Step 703, starting engine (12) to be tested；

Step 704, main control computer (1-1) and PLC module (1-2) control shift control servo motor (11-1) rotation, shift It controls servo motor (11-1) rotation and drives shift rotating wheel (11-2) rotation, shift rotating wheel (11-2) passes through gear-shifting bracing wire (11-3) drives the gear lever movement of engine (12) to be tested, and engine to be tested (12) is made to be sequentially switched to one by neutral gear Shelves, in shift process, main control computer (1-1) and PLC module (1-2) control clutch control servo motor (10-1) turn Dynamic, clutch control servo motor (10-1) drives clutch rotating wheel (10-2) rotation, and clutch rotating wheel (10-2) passes through First clutch bracing wire (10-3) movement, first clutch bracing wire (10-3) drive clutch operating connecting rod (10-4) movement, from Clutch operator link (10-4) drives the clutch control of engine (12) to be tested by second clutch bracing wire (10-5) again Arm movement, the throw-out-of clutch control before realizing shift control in conjunction with the clutch after shift；

Step 705, main control computer (1-1) and PLC module (1-2) control Throttle Opening Control servo motor (9-1) rotation, throttle control Servo motor (9-1) processed drives throttle rotating wheel (9-2) rotation, throttle rotating wheel (9-2) by acceleration cable (9-3) drive to The air throttle of test engine (12) moves, and acts the air throttle of engine to be tested (12), makes engine to be tested (12) Air throttle reach the air throttle target opening value set in step 701；

During executing step 704~step 705, the revolving speed that encoder (3-1) treats test engine (12) is measured And be transferred to the revolving speed measured PLC module (1-2), PLC module (1-2) is transmitted further to main control computer (1-1), master control meter The revolving speed n that jth time sampling obtains is calculated according to formula for calculation machine (1-1)_jThe corresponding speed v to simulated target vehicle_j, when Sample obtain when the speed of simulated target vehicle reaches the climbing initial velocity set in step 701, start timing, and root The revolving speed n that jth time sampling obtains is calculated according to formula_jCorresponding operating range S_j, when the operating range being calculated reaches step The first timing set in rapid 701 apart from when, stop timing, the time recorded at this time be the first timing time；And first is stopped Only timing time is recorded as the second beginning timing initial time, and the revolving speed n that jth time sampling obtains is calculated according to formula_j Corresponding operating range S_j, when the operating range being calculated reach the second timing set in step 701 apart from when, stop meter When, the time recorded at this time is the second timing time；Compare the second timing time and the first timing time, when the second timing time When less than or equal to the first timing time, it is judged as and is met the requirements under the angle of gradient of setting to simulated target vehicle grade climbing performance, Otherwise, when the second timing time is greater than the first timing time, it is judged as to simulated target vehicle grade climbing performance on the slope of setting Degree is unsatisfactory for requiring under angle.