CN112284743B

CN112284743B - Engine testing device

Info

Publication number: CN112284743B
Application number: CN202011126493.5A
Authority: CN
Inventors: 李右建; 邓迈; 宋函; 唐光强
Original assignee: Chongqing Tetai Technology Co ltd
Current assignee: Chongqing Tetai Technology Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2023-07-25
Anticipated expiration: 2040-10-20
Also published as: CN112284743A

Abstract

The invention provides an engine testing device, which comprises a frame, wherein the frame comprises a foundation frame and a shield arranged on the foundation frame, and a testing space is formed by the foundation frame and the shield in a surrounding manner; the foundation frame is of a box structure, and a first space, a second space and a third space are arranged in the foundation frame; the first space is internally provided with a fuel oil supply device, the second space is internally provided with a cooling water supply device, and the third space is internally provided with a cylinder head cooling assembly; a baffle plate is arranged in the shield and divides the test space into a mounting space positioned on the right side and a loading space positioned on the left side; an engine tooling frame, an engine tooling moving device and an air inlet filter assembly are arranged in the mounting space, and a loading device and an exhaust device are arranged in the loading space. The invention has the characteristics of reasonable structure, standard installation, good system integration, low test noise and good safety.

Description

Engine testing device

Technical Field

The invention relates to the technical field of motorcycle component detection, in particular to an engine testing device.

Background

The existing engine needs to be tested for various data indexes before being put into assembly and use, and according to the performance indexes and detection principle of the engine, the engine needs to be tested for various data, such as checking of rotating speed, torsion and the like, the testing devices are numerous, and the workload of connecting the testing devices with the engine is also large.

In the prior art, the used test bench does not integrate related test devices, so that assembly tests can be carried out step by step in the test process, the test time of an engine is prolonged, and the production efficiency of the engine is reduced. In addition, the problems of complex structure, irregular installation, large test noise and the like exist, the installation and the disassembly are inconvenient, and the test risk is extremely high. And because of reasons such as irrational distribution of testing arrangement for test area is big, inconvenient use has also increased the cost of engine test.

The invention with the application number of 201720860190.3 discloses an engine testing device, which comprises a base, a hydraulic lifting device, a rack, a testing device, a damping device, a cooling water circulating system, an engine, guide rails and a support, wherein the base is divided into a left cabin and a right cabin, the hydraulic lifting device is arranged in the left cabin of the base, the rack which is driven to lift by the hydraulic lifting device is arranged at the upper left part of the base, the hydraulic lifting device is fixedly connected with the rack, two parallel guide rails are arranged at the upper part of the rack, two movable supports are respectively arranged on the two guide rails of the rack, the rack is detachably connected with the engine through the supports on the two guide rails, the engine is connected with the testing device arranged at the upper right part of the base through a connecting device, and the testing device is connected with the cooling water circulating system arranged in the right cabin of the base through a water pipe.

The above-described engine test apparatus, while providing an engine test apparatus, has the following problems: 1. the engine tail gas treatment device is not arranged, so that the waste generated during the engine test cannot be effectively treated, and the development of the environment-friendly society industry is not met. 2. The engine testing device described in the scheme does not have a testing system frame, is a full open space test when an engine test is performed, and cannot effectively treat engine noise and exhaust.

Disclosure of Invention

The invention aims to provide an engine testing device which has the advantages of reasonable structure, standard installation, good system integration, low testing noise and good safety.

The invention aims to realize that an engine testing device comprises a rack, wherein the rack comprises a foundation frame and a shield arranged on the foundation frame, and a testing space is formed by the foundation frame and the shield in a surrounding manner; the foundation frame is of a box structure, and a first space, a second space and a third space are arranged in the foundation frame; the first space is internally provided with a fuel oil supply device, the second space is internally provided with a cooling water supply device, and the third space is internally provided with a cylinder head cooling assembly; a baffle plate is arranged in the shield and divides the test space into a mounting space positioned on the right side and a loading space positioned on the left side; an engine tooling frame, an engine tooling moving device and an air inlet filter assembly are arranged in the mounting space, and a loading device and an exhaust device are arranged in the loading space.

The foundation frame is a box structure, and is composed of a top plate, a bottom plate and a vertical plate, wherein the top plate, the bottom plate and the vertical plate are fixed in an integrated forming, welding or threaded connection mode. The first space, the second space and the third space are formed by separating the partition plates in the foundation frame, the installation space and the loading space are formed by separating the partition plates in the shield, and the partition plates are fixedly connected with the inner wall of the foundation frame and the inner wall of the shield in an integral forming, welding or threaded connection mode.

In the invention, the first space is used for arranging the fuel supply device, the fuel supply device can convey fuel to the engine according to the specified pressure and temperature, and the fuel quality consumed by the engine under different test working conditions is measured while the continuous operation of the engine is ensured.

The second space is used for arranging a cooling water supply device, the cooling water supply device can cool the engine, and the engine can work normally and permanently, so that the temperature of the engine is kept within a preset range.

The third space is used for setting up cylinder head cooling module, and cylinder head cooling water subassembly can solve the engine and send out the problem of scalding when performance test, can reduce the surface temperature of engine cylinder head fast, improves the degree of accuracy of engine performance test.

The installation space is used for setting up engine frock mobile device, engine frock frame and filtration subassembly that admits air, and engine frock mobile device can be quick, accurate remove the engine to can effectively reduce the time of changing and installing the engine, improve the test efficiency of engine. The engine mounting rack can rapidly clamp the engine, has good positioning effect and convenient and fast disassembly and assembly, can shorten the time of the engine mounted on the engine testing system rack, and simplifies the process of the engine mounted on the engine testing system rack. The air inlet filter assembly can effectively filter various impurities in air, and can also introduce stable and sufficient air into the engine through the air inlet end of the engine, so that the fuel in the engine can be fully combusted, the stable operation of the engine is maintained, and the accuracy of the test result of the engine is ensured.

The loading space is used for installing a loading device and an exhaust device for engine test, the input end of the loading device is connected with the output end of an engine of the engine, and the measurement result of the final engine is obtained through the output condition of the loading device. The exhaust device can exhaust the tail gas of the engine out of the test system, so that the environmental pollution is reduced, the interference of the tail gas of the engine to the test system is reduced, and the high-temperature tail gas is prevented from being directly discharged into the test system to influence the test result. In this application, a partition may also separate the loading means from the exhaust means.

Loading device, fuel supply device, cooling water supply device, engine frock frame, engine frock mobile device, cylinder head cooling water subassembly, inlet air filter subassembly and exhaust apparatus integrate in the frame, carry out reasonable utilization and distribution with the space in the frame, can reduce the space unrestrained rate, reduce the noise that produces in the test process, improve the test efficiency of engine.

The frame has reasonable structure, standard installation, good system integration, low test noise and good safety, is not limited by places in use, and effectively reduces noise pollution in the engine test process. The box structural formula foundation frame and the test space that forms by foundation frame and guard shield surround for the whole test process of engine all goes on under confined condition, greatly reduced noise and the risk in the test process.

Due to the adoption of the technical scheme, the invention has the following advantages:

and the testing devices are integrated, so that the positions of the testing devices are distributed reasonably, the disassembly and assembly are convenient, and the testing occupied area is reduced.

The arrangement of the test rack not only reduces noise generated in the test process and interference of external environment, but also ensures the safety of the test process and the test personnel, and has stronger practicability.

And meanwhile, the engine waste gas is treated, so that the safety of the environment and the testers is ensured.

Drawings

Fig. 1 is a schematic view of an overall structure of a frame of the present invention.

Fig. 2 is a side view of an overall structure of the frame of the present invention.

Fig. 3 is a rear view of an overall structure of the frame of the present invention.

Fig. 4 is a schematic view of a structure of the shield of the present invention.

Fig. 5 is a schematic structural view of a rotary arm according to the present invention.

FIG. 6 is a schematic view of a use state of the present invention.

Fig. 7 is a schematic view of an engine tooling frame of the present invention in use.

Fig. 8 is a schematic view of another angular use of the engine mount of the present invention.

Fig. 9 is a schematic view of the overall structure of the engine mount of the present invention.

Fig. 10 is a schematic view of another overall structure of the engine mount of the present invention.

Fig. 11 is a structural elevation view of an engine tooling frame of the present invention.

Fig. 12 is a top view of one construction of an engine tooling frame of the present invention.

Fig. 13 is a schematic structural view of the engine tooling moving device of the present invention.

Fig. 14 is a schematic view of another structure of the engine tooling moving device of the present invention.

Fig. 15 is a top view of the structure of the engine tooling moving device of the present invention.

Fig. 16 is a schematic view of section A-A of fig. 15.

Fig. 17 is a schematic view of section B-B of fig. 15.

Fig. 18 is a schematic structural view of the loading device of the present invention.

Fig. 19 is a top plan view of a loading device according to the present invention.

Fig. 20 is a schematic view of section A-A of fig. 19.

FIG. 21 is a schematic view of an overall structure of a fuel supply device according to the present invention.

Fig. 22 is a partially enlarged schematic view of a first sliding mechanism of the fuel supply device of the present invention.

Fig. 23 is a schematic view showing an overall structure of the cooling water supply device of the present invention.

Fig. 24 is a schematic view of the overall structure shown in the other direction of fig. 23.

Fig. 25 is a partially enlarged schematic view of a second sliding mechanism of the cooling water supply device of the present invention.

Fig. 26 is a schematic structural view of a first switching valve of the cooling water supply device of the present invention.

Fig. 27 is a schematic top view of a first switching valve of the cooling water supply device of fig. 26 according to the present invention.

Fig. 28 is a schematic view of the overall structure of the cylinder head cooling assembly of the present invention.

Fig. 29 is a schematic view showing a structure of a blowing unit of the cylinder head cooling assembly of the present invention.

Fig. 30 is a schematic structural view of a blower mounting base for a cylinder head cooling assembly according to the present invention.

Fig. 31 is a schematic front projection view of a cylinder head cooling assembly blower mounting base according to the present invention.

FIG. 32 is a schematic view of an inlet filter assembly according to the present invention.

FIG. 33 is a schematic view of another embodiment of an inlet filter assembly of the present invention.

Fig. 34 is a schematic view of another embodiment of an intake filter assembly with a filter screen according to the present invention.

Fig. 35 is a front view of an intake air filter assembly of the present invention.

Fig. 36 is a top view of an intake air filter assembly of the present invention.

Fig. 37 is a schematic view of a cover structure of an intake air filter assembly according to the present invention.

FIG. 38 is a schematic view of a slide plate and electrical activation tab of an inlet filter assembly of the present invention.

FIG. 39 is a schematic view of an installation structure of the exhaust device and the head restraint assembly of the present invention.

Fig. 40 is a schematic view of another angular mounting structure of fig. 39.

The device comprises a first foundation seat 101, a transmission shaft 102, a motor 103, a bearing seat 104, a connecting disc 105, a first bottom plate 106, a first top plate 107, a first vertical plate 108, a groove 109, a flexible shaft 1010, a 1011 gasket 1012 sensor, a 1013 calibration device and a 201 base; 202 a first base plate; 203 a first slide mechanism; 204 a fuel tank; 205 a first drawer rail; 206 a first slide mount; 207 handle; 208 a liquid level sensor; 209 fuel pump; 210 pneumatic control valve; 211 backpressure valve; 212 gasoline cell; 213 pressure sensor, 301 base; 302 a second base plate; 303 a second slide mechanism; 304 a cooling water tank 305 cooling water pump; 306 a heat sink; 307 first switching valve; 308 a first water inlet channel; 309 a first return water channel; 310 a first blow channel; 311 a first bracket; 312 a second drawer rail; 313 a second slide mount; 314 handle, 401 bottom plate, 402 slide rail, 403 pulley, 404 first base, 405 first limit part, 406 second limit part, 407 first compression part, 408 second compression part, 409 connection part, 410 first adjusting device, 411 second base, 412 first cushion, 413 second cushion, 501 base plate, 502 positioning device, 503 first driving device, 504 guiding device, 505 limit bar, 506 compression device, 507 first driver, 508 first support, 509 first roller, 510 servo motor seat, 601 blowing device; 602 a blowing pipeline; 603 blowing an air port; 604 a connection flange; 605 a transition tube; 606 a securing means; 607 bottom plate; 608 a support frame; 609 a first connection hole; 610 grooves; 611 second connecting holes, 701 box body, 702 box cover, 703 air inlet connector, 704 sliding plate, 705 sliding frame, 706 first connecting plate, 707 second connecting plate, 708 electric starting connector, 709 sensor connector, 710 concave cavity, 711 third connecting plate, 801 air outlet connector, 802 air treatment device, 803 muffler device, 804 air draft main pipe, 805 first pipeline, 806 second pipeline, 807 engine cooling air channel, 808 loading motor cooling air channel, 809 first air inlet pipe, 810 first air outlet pipe, 811 first valve, 901 basic frame, 902 shield, 903 shock absorber, 904 first dismounting door, 905 second dismounting door, 906 guide rail, 907 sliding door, 908 limiting part, 909 first vertical arm, 910 first cross arm, 911 cantilever box, 912 perspective plate.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.

As shown in fig. 1 to 40, an engine test apparatus includes a frame including a base frame 901, and a shroud 902 provided on the base frame 901, the base frame 901 and the shroud 902 enclosing a test space; the foundation frame 901 is of a box structure, and a first space, a second space and a third space are arranged in the foundation frame 901; the first space is internally provided with a fuel oil supply device, the second space is internally provided with a cooling water supply device, and the third space is internally provided with a cylinder head cooling assembly; a partition plate is further arranged in the shield 902, and divides the test space into a mounting space positioned on the right side and a loading space positioned on the left side; an engine tooling frame, an engine tooling moving device and an air inlet filter assembly are arranged in the mounting space, and a loading device and an exhaust device are arranged in the loading space.

As shown in fig. 1 to 6, the foundation frame 901 is a box structure, and is a closed box structure formed by a top plate, a bottom plate and a vertical plate, and the top plate, the bottom plate and the vertical plate can be fixed by integral forming, welding or threaded connection. The first space, the second space and the third space are formed by separating the base frame 901 through the partition boards, the installation space and the loading space are formed by separating the shield 902 through the partition boards, and the partition boards are fixedly connected with the inner wall of the base frame 901 and the inner wall of the shield 902 through the modes of integral forming, welding or threaded connection.

The loading space is used for installing a loading device and an exhaust device for engine test, the input end of the loading device is connected with the output end of an engine of the engine, and the measurement result of the final engine is obtained through the output condition of the loading device. The exhaust device can exhaust the tail gas of the engine out of the test system, so that the environmental pollution is reduced, the interference of the tail gas of the engine to the test system is reduced, and the high-temperature tail gas is prevented from being directly discharged into the test system to influence the test result. In this embodiment, a partition may separate the loading means and the exhaust means.

The frame has reasonable structure, standard installation, good system integration, low test noise and good safety, is not limited by places in use, and effectively reduces noise pollution in the engine test process. The box structural formula foundation frame 901 and by foundation frame 901 and the test space who surrounds formation of guard shield 902 for the whole test process of engine all goes on under the confined condition, greatly reduced noise and the risk in the test process.

Further, a linear guide rail 906 is disposed on the right side of the shroud 902, and a sliding door 907 is sleeved on the linear guide rail 906. The shield 902 includes 1 or more linear guide tracks 906 and 1 or more sliding doors 907, the linear guide tracks 906 are provided on the upper portion of the shield 902 and/or the lower portion of the shield 902, and the sliding doors 907 are sleeved on the linear guide tracks 906. In this embodiment, the upper part of the shield 902 and the lower part of the shield 902 are both provided with linear guide rails 906, the sliding doors 907 are 2 sliding doors 907 which move in opposite directions, and the side section of the sliding doors 907 is in an inverted L shape, so that the upper part and the right side of the test space can be shielded at the same time.

Further, a handle is provided on the sliding door 907. The handle is fixed on the sliding door 907 by integral molding, welding or screw connection, etc. to facilitate the opening or closing of the sliding door 907.

Further, a limiting portion 908 is provided on the linear guide 906. The limiting portion 908 is sleeved between the linear guide 906 and the sliding door 907, or is fixed between the linear guide 906 and the sliding door 907 by welding, screwing, or the like, and is used for limiting sliding of the sliding door 907, so as to prevent the sliding door 907 from sliding out of the linear guide 906 or separating from the linear guide 906.

Further, a shock absorber 903 is disposed at the bottom of the base frame 901. The shock absorbers 903 of more than 1 are fixed at the bottom of the foundation frame 901 in a welding or threaded connection mode, and the shock absorbers 903 are preferably uniformly distributed at the bottom of the foundation frame 901, so that the frame is prevented from being deviated due to larger vibration in the engine testing process, and the noise amount generated in the testing process is further reduced.

The shock absorber 903 is preferably an air shock absorber 903, the air shock absorber 903 adopts air as a medium, and even if the air leaks slightly, the air shock absorber 903 can be automatically supplemented, so that the effect of automatically adjusting the shock absorption resistance along with the change of vibration amplitude is achieved, and the vibration of each frequency band is effectively eliminated.

Further, a first disassembly door 904 and a second disassembly door 905 are provided on the left side of the shroud 902. The first and second removal doors 904, 905 are secured to the shroud 902 by threaded, snap-fit, hinged, or the like. In this embodiment, the edges of the first disassembly door 904 and the second disassembly door 905 are integrally formed with a concave structure and/or a convex structure, the corresponding part of the shield 902 is provided with a convex structure and/or a concave structure matched with the first disassembly door 904 and the second disassembly door 905, the first disassembly door 904 corresponds to a loading space, and the second disassembly door 905 corresponds to an exhaust device of the engine, so that the space and the device can be distinguished, installed and overhauled conveniently.

Further, a third disassembling door is provided on the base frame 901. The number of the third disassembling doors is 1 or more, in this embodiment, the third disassembling doors are preferably arranged at the positions corresponding to the first space, the second space and the third space, so that the space and the device can be distinguished, installed and overhauled.

Further, a handle is arranged on the disassembly door. The handle is fixed on the disassembly door in an integrated forming, welding or threaded connection mode, so that the disassembly and the assembly of the first disassembly door 904, the second disassembly door 905 and the third disassembly door are facilitated.

Further, a first vertical arm 909 and a first cross arm 910 are rotatably connected, wherein the first vertical arm 909 is located in the loading space, and the first cross arm 910 extends out of the installation space and is connected with the cantilever box 911.

In this embodiment, one end of the first vertical arm 909 is fixed in the loading space through the base, and the base and the loading space and/or the first vertical arm 909 can be fixed through an integrated molding, bonding, welding, riveting or threaded connection, so as to ensure the stability of the cantilever structure; the shield 902 is provided with a through hole matched with the first vertical arm 909, the other end of the first vertical arm 909 penetrates through the shield 902 and is rotationally connected with one end of the first cross arm 910, for convenience in operation, the other end of the first cross arm 910 is fixedly connected with a cantilever box 911, and an operation interface is arranged on the cantilever box 911 for a user to perform test operation.

The first vertical arm 909 is preferably connected to the first rotating arm at a rotatable 90 ° angle of the machine tool boom 5575 series, model AEG15-5575-XL90, and the first cross arm 910 is preferably connected to the boom box 911 at a 90 ° box connection, model CZ-55/77, and the boom box 911 is preferably a boom box 911, model HYCP 60105155180.

Further, as shown in fig. 2, a perspective plate 912 is provided on the right side of the shroud 902. The perspective plate 912 is preferably made of glass or plastic, and can directly view the inside of the cover 902 from the outside of the cover 902, thereby allowing the engine to be operated at any time.

Further, the device comprises a bottom plate 401, wherein a sliding rail 402 and a pulley 403 matched with the sliding rail 402 are arranged on the bottom plate 401; a first base 404 is arranged on the left side of the sliding rail 402, and a first limiting part 405 and a second limiting part 406 are arranged at the front end of the first base 404; the first base 404 is provided at a rear end thereof with a first pressing portion 407 and a second pressing portion 408.

As shown in fig. 7 to 12, in the present invention, the sled 403 is used for carrying an engine, the slide rails 402 are used for supporting and guiding the movement of the sled 403, and the number of the slide rails 402 is 1 or more, preferably, the slide rails are uniformly fixedly connected between the upper side of the bottom plate 401 and the sled 403, so that the sled 403 can perform a reciprocating linear motion according to a preset direction. The sliding rail 402 is preferably a linear guide rail, which can bear a certain torque and can realize high-precision linear motion under the condition of high load.

The first base 404 is fixed on the bottom plate 401 by means of integral molding, bonding, welding, riveting or threaded connection, and the first compression part 405 and the second compression part 406 fixed at the front end of the first base 404 are limit structures with adjustable heights and/or angles, so that after the pulley 403 carrying the engine moves to a preset position, the heights and/or angles of the first compression part 405 and the second compression part 406 are adjusted, and the pulley can be tightly pressed on the engine.

The first limiting part 407 and the second limiting part 408 fixed at the rear end of the first base 404 are non-adjustable limiting structures fixed at the rear end of the first base 404 in an integrated forming, bonding, welding, riveting or threaded connection mode, limit the engine, effectively prevent the engine from being impacted in the connection process with the loading device, ensure the accuracy of the clamping position and angle of the engine, and further ensure the centering degree of the engine and the loading device.

In this embodiment, the first pressing portion 405 and the second pressing portion 406 disposed at the rear end of the first base 404 are both in a pressing block and/or lever structure driven by a cylinder, the first limiting portion 407 and the second limiting portion 408 limit and position the engine, and then the first pressing portion 405 and the second pressing portion 406 are adjusted to be pressed on the engine, so that the engine can be stably and firmly clamped between the limiting portion and the pressing portion by cooperation of the limiting portion and the pressing portion.

Further, a second base 411 is disposed on the right side of the sliding rail 402, and a third pressing portion is further disposed on the second base 411. The number of the third pressing parts is 1 or more, and the third pressing parts are the same as or similar to the first pressing parts 405 or the second pressing parts 406, and are driven by the air cylinders in the embodiment, so that the stability of the engine during the test can be further ensured.

Further, a first cushion block 412 is disposed on the left side of the pulley 403, and a second cushion block 413 is disposed on the right side of the pulley 403. The first cushion block 412 and the second cushion block 413 can be fixed on the pulley 403 in an integrated forming, bonding, welding, riveting or threaded connection mode, the cross section of the first cushion block 412 and/or the second cushion block 413 is of a polygonal structure, in the embodiment, the first cushion block 412 and the second cushion block 413 are symmetrically arranged at two ends of the pulley 403, when in use, an engine is arranged above the first cushion block 412 and the second cushion block 413, under the condition that the engine can be stably arranged, a gap is reserved between the engine and the pulley 403, and the engine is convenient to take and place and auxiliary support for the engine.

Further, chamfer structures are arranged at the contact positions of the first cushion block 412 and/or the second cushion block 413 and the engine. The chamfer structure of the first pad 412 and/or the second pad 413 facilitates assembly of the engine and also serves as a guide for positioning during assembly.

Further, a connection portion 409 is provided on the bottom plate 401. More than one connecting part 409 is fixed on the bottom plate 401 through modes such as integrated into one piece, bonding, welding, riveting or threaded connection, and the bottom plate 401 is fixedly connected with other bases or connecting pieces through the connecting part 409, so that the displacement of the bottom plate 401 in the process of testing the engine is prevented, and the stability and the safety of the test are ensured.

In this embodiment, the connection portion 409 is a connection hole, and in use, a pin is fixedly connected to the base below the bottom plate 401 after passing through the connection hole. In other embodiments, the connection 409 is a protrusion or recess, and the other base or connection is provided with a recess or protrusion that mates with the connection.

Further, the base plate 401 is further provided with armrests. Armrests are fixed above the bottom plate 401 by means of bonding, welding or threaded connection, and in this embodiment, the armrests are disposed on two sides of the bottom plate 401, so that the bottom plate 401 can be replaced, drawn out or pushed in conveniently, and the bottom plate 401 can be lifted or placed conveniently.

Further, a first adjusting device 410 is further disposed on the first base 404. The first base 404 is fixed with a first adjusting device 410 by bonding, welding, riveting or screwing, and the first adjusting device 410 is connected with the engine. In this embodiment, the first adjusting device is a gear shifting mechanism, and is used for performing a gear shifting test on an engine in an engine test.

Further, a first supporting device is disposed on the first base 404. The first base 404 is fixed with first supporting devices by means of integral molding, welding or threaded connection, and the number of the first supporting devices is 1 or more than 1, and the first supporting devices are used for setting other testing devices or pipelines, such as connection of mechanisms of air intake, air exhaust or oil supply and the like with an engine.

Further, a second supporting device is disposed on the second base 411. The second base 411 is provided with a second supporting seat with the same or similar structure as the first supporting seat on the first base 404, which is more beneficial to the arrangement and overall layout of other testing devices.

Further, the tool moving device comprises a base plate 501, a positioning device 502 is arranged on the base plate 501, and a first driving device 503 is connected below the base plate 501.

As shown in fig. 13 to 17, the base plate 501 is integrally formed with a positioning device 502, or is fixed by bonding, welding, riveting, screwing, or the like, and the positioning device 502 is used for positioning an engine placed above the base plate 501. The first driving device 503 is fixedly connected below the base plate 501, and the first driving device 503 can drive the base plate 501 to move accurately, so as to drive an engine arranged above the base plate 501 to be connected with the loading device for engine test accurately.

In this embodiment, the base plate 501 has a plate-shaped structure, the positioning device 502 is a protrusion or a positioning pin fixedly connected to the base plate 501, the first driving device 503 is a servo motor, the servo motor is fixed on the testing device, the output end of the servo motor is connected or welded with the base plate 501 through a screw, and the servo motor can make the control speed and the position accuracy very accurate; the engine assembly is provided with a through hole matched with the positioning device 502, the relative position of the engine assembly and the base plate 501 is fixed through the positioning device 502, and when the servo motor drives the base plate 501 to move, the movement of the engine assembly is driven at the same time.

Further, a chamfer is provided at the upper end of the positioning device 502. In this embodiment, a chamfer with a certain inclined plane is machined on the upper end of the protrusion or the positioning pin as the positioning device 502, so that the assembly is convenient, and the guiding and positioning functions.

Further, a servo motor mount 510 driven by a servo motor is also included. In this embodiment, the servo motor is used to drive the servo motor seat 510 to move and further drive the base plate 501 to move, and the base plate 501 is fixed on the servo motor seat 510 by welding, riveting or screwing, so as to facilitate assembly and assembly of the base plate 501 and facilitate replacement of different base plates 501.

Further, a guiding device 504 is also connected to the base plate 501. The number of the guide devices 504 is 1 or more, and the guide devices 504 are used for supporting and guiding the movement of the base plate 501, so that the base plate 501 can smoothly and accurately perform the reciprocating linear movement in the preset direction. In this embodiment, the guiding devices 504 are linear guide rails, and are disposed in parallel on two sides of the base plate 501, so as to bear a certain torque, and also realize high-precision linear motion under high load, so as to ensure the reliability of sliding.

Further, the base plate 501 is provided with a limit bar 505, and a pressing device 506 is arranged outside the limit bar 505. The number of the limit bars 505 is 1 or more, and the limit bars are fixed on the surface of the base plate 501 by means of integral molding, welding or threaded connection. As shown in fig. 13 or 14, in the present embodiment, the number of the limit bars 505 is 3, and the limit bars are all rectangular structures, and are respectively disposed at the front end and two sides of the base plate 501; the limiting bars 505 at the front end play a limiting role for preventing excessive movement of the engine assembly, and the limiting bars at the two sides are used for guiding the movement direction of the engine assembly and limiting the movement track of the engine assembly.

The number of the pressing devices 506 is 1 or more, and is preferably uniformly distributed on the base plate 501, so that after the engine assembly moves to a predetermined position, the engine assembly is pressed on the base plate 501, and displacement and dislocation between the engine assembly and the base plate 501 during a testing process or a subsequent moving process are prevented. In this embodiment, the number of the pressing devices 506 is 4, the pressing devices are uniformly distributed on two sides of the base plate 501, the cross section of each pressing device is in an inverted "L" shape, and the pressing devices are driven by an air cylinder to rotate and press.

Further, a through hole is further formed in the base plate 501, and a lifting device is arranged below the through hole. In the present invention, it includes 1 or more than 1 through holes, which are preferably provided at both sides of the base plate 501, and the engine assembly is driven to move forward by the lifting device.

Further, the lifting device comprises a first driver 507, the first driver 507 is connected with a first support 508, and a first roller 509 is arranged on the first support 508. In the invention, the engine assembly comprises 1 or more than 1 first supports 508 and 1 or more than 1 first rollers 509, so that the movement of the engine assembly is ensured to be more stable, and the movement stroke of the engine assembly is enlarged.

In the present embodiment, the first driver 507 is a cylinder. The first support 508 and the first roller 509 can be driven by the first driver 507 to go up and down through the through hole, after the first driver 507 drives the first support 508 and the first roller 509 to go up, the first roller 509 goes up and down through the through hole to support the engine component, then when the engine component is manually pushed to the vicinity of the limit bar 505 by a person, the first roller 509 is controlled to go down below the through hole, the engine component also goes down to a preset position, then the engine component is fixed on the base plate 501 through the positioning device 502 on the base plate 501, and finally the engine is accurately connected with the loading device for engine test through the driving of the first driver 503.

Further, the loading device comprises a first base seat 101, and a load transmission shaft 102 and a load motor 103 are arranged on the first base seat 101; the load transmission shaft 102 is connected with the first base seat 101 through a bearing seat 104, one end of the load transmission shaft 102 is connected with the load motor 103, and the other end is provided with a connecting disc 105.

As shown in fig. 18 to 20, in the present invention, the bearing seat 104 is sleeved on the load transmission shaft 102 and is located on the same axis as the load motor 103, so as to ensure the level of the load transmission shaft 102, and the axis of the connecting disc 105 is concentric with the axis of the load transmission shaft 102, so that the stability of the loading device is improved, and the centering of the loading system is ensured.

The bearing seat 104 is fixed on the upper surface of the first base seat 101 by welding, riveting or screwing, and the like, plays a role in supporting and protecting the load transmission shaft 102, has the number of 1 or more than 1, and is also integrally formed with through holes matched with the load transmission shaft 102. One end of a load transmission shaft 102 is connected with a load motor 103, and the other end of the load transmission shaft passes through a bearing seat 104 and then is connected with an engine through a connecting disc 105, so that power transmission between the loading device and the engine is ensured.

In the present embodiment, the connection pad 105 is sleeved on the load transmission shaft 102, and the connection pad 105 is fastened and connected with the flywheel of the engine through bolts. The load transmission shaft 102 and the load motor 103 are arranged on the same base 101, so that the level of the load transmission shaft 102 is ensured, the height of the axle center of the load transmission shaft 102 is convenient to adjust, and the neutrality of the load transmission shaft 102 and the engine is ensured.

Further, the first base 101 is a box structure, and includes a first bottom plate 106 and a first top plate 107 that are parallel to each other, and 2 or more first risers 108 are disposed between the first bottom plate 106 and the first top plate 107. The first bottom plate 106, the first top plate 107 and the first vertical plate 108 form the first foundation base 101 with simple structure, stability and reliability, and the first vertical plates 108 are preferably uniformly distributed between the first bottom plate 106 and the first top plate 107, so that the overall stability and bearing capacity of the foundation plate can be ensured.

The base seat may be integrally formed, or may be formed by fixing the first bottom plate 106, the first top plate 107, and the first riser 108 by bonding, welding, riveting, or screwing. In this embodiment, the first base 101 is welded and fixed between the first bottom plate 106, the first top plate 107 and the first riser 108, and then the first base 101 is machined, so that deformation or displacement of the first base 101 caused by machining errors or machining differences among the first bottom plate 106, the first top plate 107 and the first riser 108 can be avoided.

Further, a groove 109 is provided on the first bottom plate 106. The first bottom plate 106 is provided with 1 or more than 1 grooves 109 in an integrated manner, and the grooves 109 reduce processing materials, save processing cost, reduce the weight of the foundation base, and are more convenient to carry, install and adjust.

Further, a groove 109 is provided on the first top plate 107. The processing materials can be further reduced, the processing cost can be reduced, and the weight of the foundation base can be reduced without affecting the bearing of the first top plate 107.

Further, the first base 101 is provided with 1 or more weight reducing holes. The weight of the first base 101 is reduced while the mechanical strength of the first base 101 is effectively secured.

Further, a positioning pin and a connecting bolt are provided between the first riser 108 and the first top plate 107. The positioning pins and the connecting bolts are arranged between the first vertical plate 108 and the first top plate 107, so that dislocation of the first vertical plate 108 and the first top plate 107 in the assembly process and the use process can be further prevented, and the stability of the first foundation 101 is further ensured.

Further, the load transmission shaft 102 is provided with 1 or more flexible shafts 1010. The flexible shaft 1010 is sleeved on the load transmission shaft 102 and is used for compensating and correcting the situation that the axes of the bearing pedestal 104 and the load motor 103 are not on the same straight line. In this embodiment, flexible shafts 1010 are sleeved at both ends of the bearing housing 104, so that the measurement effect can be ensured in addition to the convenience of installation.

Further, an adjusting washer 1011 is provided between the load motor 103 and the first base 101. The number of the gaskets 1011 is 1 or more than 1, the gaskets 1011 are used for adjusting the height of the load motor 103, and selecting the gasket 1011 with proper thickness or model can ensure that the load motor 103 and the bearing seat 104 are positioned on the same horizontal plane, and ensure the stability of the load motor 103 and the bearing seat 104 when rotating the neutral and load transmission shaft 102.

Further, a torque sensor 1012 is provided on the load transmission shaft 102. The torque sensor 1012 is sleeved on the load transmission shaft 102 and is used for detecting the torque sensing of the rotation of the load transmission shaft 102, converting the physical change of the torque into an accurate electric signal, providing real-time, real and reliable data for the rotation of the load transmission shaft 102, directly measuring the torque of the load transmission shaft 102, and being more accurate, visual and more convenient.

Further, the load transmission shaft 102 is further provided with a calibration device 1013. The calibration device 1013 is sleeved on the load transmission shaft 102 and is used for detecting whether the load transmission shaft 102 is static and stable. In this embodiment, the calibration device 1013 includes a connecting frame, 2 connecting arms, and more than 2 weights; the connecting frame is sleeved on the load transmission shaft 102, the two ends of the connecting frame are symmetrically inserted with connecting arms, and the other ends of the connecting arms are connected with balance weights. In use, when the load transmission shaft 102 is stationary, the two ends of the calibration device 1013 are stressed and balanced, and the weights at the two ends are positioned on the same horizontal plane and kept stationary.

Further, the device also comprises a stop seat arranged on the load transmission shaft 102. The anti-rotation seat can prevent the rotation of the load transmission shaft 102 in the calibration process, and the calibration result and the measurement accuracy are improved.

Further, the fuel supply device comprises a base 201 and a first base plate 202, wherein the first base plate 202 is connected with the base 201 through a first sliding mechanism 203; the first base plate 202 is provided with a fuel supply unit including a fuel tank 204, and a fuel delivery line and a fuel recovery line connected to the fuel tank 204.

The base 201 may be an L-shaped structure or other steel structures, and a supporting structure that is attached to the shape of the base 201 is provided along the inner wall of the L-shaped base 201 when the L-shaped structure is adopted, and a plurality of right-angle triangular blocks are provided on the supporting structure, and right-angle edges of the right-angle triangular blocks are attached to the inner wall of the supporting structure respectively; the right-angle triangular block, the supporting structure and the base 201 are formed integrally or formed by welding the three. The base 201 is selected to have an "L" shape for ease of installation and weight reduction of the support frame, and the strength of the base 201 can be further enhanced by cooperating with the right-angled triangular blocks. The first base plate 202 is a plate-like structure to facilitate carrying the fuel supply. In the invention, one end of the fuel delivery pipeline is connected to the oil outlet of the fuel tank 204, and the other end is connected to the oil supply port of the engine; one end of the fuel recovery pipeline is connected to an oil return port of the engine, the other end of the fuel recovery pipeline is connected to an oil inlet of the fuel tank 204, and a fuel pump 209 is connected to the fuel delivery pipeline in series. Under the driving of the fuel pump 209, fuel enters the engine through the fuel delivery pipeline to supply fuel to the engine, unburned fuel in the engine flows into the fuel tank 204 through the fuel recovery pipeline, and the recovered fuel enters the engine through the fuel delivery pipeline, so that the fuel is circulated to form a fuel supply and return loop of the engine.

In the invention, the fuel supply device is arranged on one side of the whole first base plate 202, and the pneumatic valve pump 210 is arranged on the other side of the whole first base plate, so that the gravity of all parts is uniformly distributed on the base plate, and the device is more stable when the base plate is pulled out.

The fuel delivery pipeline is also provided with a back pressure valve 211, a gasoline lattice 212 and a pressure sensor 213. Wherein the back pressure valve 211 is used for keeping a constant pressure at the pump outlet and preventing the fuel on the outlet pipeline of the fuel delivery pipeline from flowing back; the gasoline lattice 212 is used for filtering gasoline from the oil tank to the combustion chamber of the engine, and impurities are effectively filtered by adopting the gasoline lattice 212, so that the engine can be prevented from being damaged due to long-time use of the impurity gasoline, and the reduced oil path and the fuel injection system are protected from being corroded and damaged; the pressure sensor 213 can be used for monitoring the pressure in the fuel flowing process in real time, and timely finding out abnormal conditions to avoid equipment damage.

Further, as shown in fig. 22, the first sliding mechanism 203 includes a first drawer rail 205 provided on the base 201 and a first sliding seat 206 provided on the first base plate 202, wherein the first sliding seat 206 is matched with the first drawer rail 205.

The first drawer rail 205 in the present invention is a conventional common drawer rail, and the rail is integrally formed in a long strip shape, and has a longitudinal groove on a surface thereof for guiding the first sliding seat 206. The first sliding seat 206 has an "L" structure, and the inner side of the "L" first sliding seat 206 is fixedly connected to the base plate, specifically: the plate surface of the foundation plate is placed on the inner side of the horizontal part of the first sliding seat 206, and the horizontal part of the first sliding seat 206 and the foundation plate are connected through bolts or integrally processed and formed; the vertical outer side of the first sliding seat 206 is provided with a ridge matching the first drawer rail 205. The longitudinal grooves on the surface of the drawer rail cooperate with the ridges on the first slide 206 during installation, thereby enabling the first slide 206 to carry the base plate in a linear reciprocating motion. The first drawer guide rail 205 and the first sliding seat 206 in the invention can also play roles in guiding and reducing friction, and can ensure the stable and reliable operation of the device and achieve the effect of saving labor when the foundation plate is pulled. In addition, the drawer guide rail can have higher rated load than the linear bearing, can bear certain torque, and can realize high-precision linear motion of the fuel oil supply device under the condition of high load.

Further, as shown in fig. 21, two or more first sliding mechanisms 203 are provided between the first base plate 202 and the base 201. Providing two or more first sliding mechanisms 203 can make the guiding property of the sliding mechanisms better, ensure that the foundation plate does not incline, and make the foundation plate operate stably and reliably. In addition, the invention can also arrange a sliding mechanism at the bottom of the base plate, thereby improving the repeatability and the sliding accuracy of the whole fuel oil supply device.

Further, one or more handles 207 are provided on the first base plate 202. The handle 207 of the present invention is fixedly attached to the base and may be formed by bolting or welding. And the purpose of being provided with one or more handles 207 on the first foundation plate 202 is dispersion impetus, when pulling handle 207, can a plurality of operating personnel carry out the pulling, still can guarantee the even atress of foundation plate when laborsaving to steadily pull out the foundation plate.

Further, a liquid level sensor 208 is provided on the fuel tank 204. The purpose of the level sensor 208 provided on the fuel tank 204 is to monitor the amount of fuel in the fuel tank 204 at any time, thereby replenishing the fuel in a timely manner. In addition, the position of the fuel can be judged according to the data of the liquid level sensor 208 when the fuel is replenished, so that the fuel overflow caused by continuously adding the fuel is prevented.

Further, a fuel pump 209 is disposed on the delivery line. The fuel pump 209 is provided on the delivery line for pressurizing the fuel to force the fuel into the fuel delivery line and thereby deliver the fuel to the engine. The fuel pump 209 also allows the fuel supply system of the present invention to be installed at any height of the test stand at will, thereby avoiding the problem of fuel not entering the engine due to too low a fuel tank 204.

Further, the cooling water supply device includes a base 301 and a second base plate 302, the second base plate 302 being connected to the base 301 by a second sliding mechanism 303; a cooling water supply unit including a cooling water tank 304, and a cooling water delivery pipe and a cooling water recovery pipe connected to the cooling water tank 304 is provided on the second base plate 302.

The base 301 may be an "L" structure, or other shaped steel structures, and when the "L" structure is adopted, a supporting structure that is attached to the shape of the base 301 is provided along the inner wall of the "L" base 301, and a plurality of right-angle triangular blocks are provided on the supporting structure, and right-angle edges of the right-angle triangular blocks are attached to the inner wall of the supporting structure respectively; the right-angle triangular block, the supporting structure and the base 301 are formed integrally or formed by welding the three. The base 301 is selected to have an "L" shape for ease of installation and weight reduction of the support frame, and the strength of the base 301 can be further enhanced by cooperating with right angle triangular blocks. The second base plate 302 has a plate-like structure so as to carry the cooling water supply device. The working principle of the cooling water conveying pipeline and the cooling water recovery pipeline in the cooling water supply device is the same as that of the cooling water circulating system in the prior art, such as the cooling water pipeline of the cooling water circulating device with the patent number of CN 10765964A. In the invention, one end of the cooling water conveying pipeline is connected to the water outlet of the cooling water tank 304, and the other end is connected to the water inlet of the engine; one end of the cooling water recovery pipeline is connected to a water return port of the engine, the other end of the cooling water recovery pipeline is connected to a water inlet of the cooling water tank 304, and the cooling water pump 305 is connected in series to the cooling water conveying pipeline. Under the drive of the cooling water pump 305, cooling water enters the engine through the cooling water conveying pipeline to cool the engine and take away heat generated by the engine. The cooling water after absorbing heat is cooled by the radiator 306 and flows into the cooling water through the cooling water recovery pipeline, and the recovered cooling water enters the engine through the cooling water conveying pipeline, so that the cooling water circulates, and a water supply return loop of the engine is formed.

Further, as shown in fig. 23 and 24, a cooling water pump 305 is provided on the cooling water delivery pipe, and a radiator 306 is provided on the cooling water recovery pipe.

The cooling water pump 305 is provided on the cooling water delivery pipe for pressurizing the cooling water, and for pressurizing the cooling water into the cooling water delivery pipe, and for delivering the cooling water into the engine to cool the engine. The cooling water pump 305 can also be used to enable the cooling water supply system of the invention to be installed at any height position of the test bench at will, so that the problem that the cooling water cannot enter the engine due to too low position of the cooling water tank 304 is avoided.

The cooling water recovery pipeline is provided with a radiator 306 for recovering heat dissipation during cooling and then conveying the heat back to the water tank. Since a large amount of heat of the engine is taken away by the cooling water recovered after passing through the engine, the temperature of the cooling water is higher during recovery, and the temperature of the recovered cooling water can be reduced by using the radiator 306, so that the temperature of the cooling water in the recovered water inlet tank is reduced, and the cooling water is pumped out by the pump and then is conveyed into the engine for cooling, thereby realizing good circulation. The pressure sensor and the temperature sensor are also connected in series on the cooling loop before the radiator 306, so that further measurement of the pressure and the temperature of the reclaimed water is realized.

Further, as shown in fig. 23, the cooling water supply unit further includes a first switching valve 307, and a first water inlet channel 308, and a first air blowing channel 310 are disposed in the first switching valve 307, where the first air blowing channel 310 is communicated with the first water inlet channel 308.

One end of the first water inlet channel 308 is connected to the outlet of the cooling water conveying pipeline, the other end is connected with the cooling water inlet of the engine, and a water inlet valve is further arranged at the outlet of the cooling water conveying pipeline.

One end of the first water return channel 309 is connected to the inlet of the cooling recovery pipeline, the other end is connected with the cooling water outlet of the engine, and a water return valve is further arranged at the inlet of the cooling recovery pipeline. The first water inlet channel 308 and the first water return channel 309 are arranged side by side and are arranged in the movement direction of the foundation plate, wherein the first water inlet channel 308 is arranged on the outer side, namely, the side close to the handle 314; the first water return passage 309 is provided inside.

As shown in fig. 23, 26 and 27, the first air blowing passage 310 is provided at the outer side of the first switching valve 307, that is, the outer side of the first switching valve 307 parallel to the handle 314. And the first air blowing passage 310 is communicated with the first water inlet passage 308, wherein the first air blowing passage 310 may be connected with an air blowing device.

When the engine test is completed, the water inlet valve may be closed to open the water return valve, and at this time, an external air blowing device is opened to blow air along the first air blowing channel 310 to the first water inlet channel 308. Because the water inlet valve is closed, air flow can only enter the engine along the water inlet of the engine, and under the action of wind pressure, the air flow takes away cooling water which can be remained in the engine, and the engine is blown dry, so that the cooling water is blown out and returned into the cooling water tank 304 along the first water return channel 309.

Further, as shown in fig. 23, the first switching valve 307 is connected to the second base plate 302 through a first bracket 311. The first bracket 311 is in a shape like a Chinese character 'ji', and the horizontal parts on two sides of the bracket are provided with screw holes, so that the bracket and the foundation plate are fixed through screw connection, the bracket is convenient to install and detach, the weight of the whole device can be reduced due to the shape like the Chinese character 'ji', and the bracket is convenient to produce and manufacture. The part of the bracket with the shape of a Chinese character 'ji' is used for bearing the first conversion valve 307, and the height of the part can be designed during processing so as to lift the first conversion valve 307 to a certain height, thereby realizing the matching of the conversion valve with the water inlet channel, the first water return channel 309 and the first air blowing channel 310. .

Further, as shown in fig. 23 and 22, the second sliding mechanism 303 includes a second drawer rail 312 provided on the base 301, and a second sliding seat 313 provided on the second base plate 302, wherein the second sliding seat 313 is matched with the second drawer rail 312.

The second drawer rail 312 in the present invention is a conventional common drawer rail, and the rail is formed in a long shape as a whole, and has a longitudinal groove formed on a surface thereof for guiding the second sliding seat 313. The second sliding seat 313 has an "L" structure, and the inner side of the "L" second sliding seat 313 is fixedly connected with the base plate, specifically: the plate surface of the foundation plate is placed inside the horizontal portion of the second sliding seat 313, and the horizontal portion of the second sliding seat 313 and the foundation plate are connected through bolts or integrally formed; the second sliding seat 313 is provided at a vertical outer side thereof with a ridge matching the second drawer rail 312. The longitudinal grooves on the surface of the drawer guide rail are matched with the ridges on the second sliding seat 313 during installation, so that the second sliding seat 313 drives the foundation plate to perform linear reciprocating motion. The cooperation of the second drawer guide rail 312 and the second sliding seat 313 in the invention can also play roles of guiding and reducing friction, and can ensure the stable and reliable operation of the device and achieve the effect of saving labor while pulling the foundation plate. In addition, the drawer guide rail can have higher rated load than the linear bearing, can bear certain torque, and can realize high-precision linear motion of the cooling water supply device under the condition of high load.

Further, two or more second sliding mechanisms 303 are provided between the second base plate 302 and the base 301. Providing two or more second sliding mechanisms 303 can make the guiding property of the sliding mechanisms better, ensure that the foundation plate does not incline, and make the foundation plate operate stably and reliably. In addition, the invention can also be provided with a sliding mechanism on the ground of the foundation plate, thereby improving the repeatability and the sliding accuracy of the whole cooling water supply device.

Further, one or more handles 314 are provided on the second base plate 302. The handle 314 of the present invention is fixedly attached to the base plate and may be formed by bolting or welding. And the second base plate 302 is provided with one or more handles 314 for dispersing the force points, so that when the handles 314 are pulled, a plurality of operators can pull the base plate, and the force is saved, and the base plate is uniformly stressed, so that the base plate is pulled out stably.

Further, the cylinder head cooling assembly comprises a blowing device 601, wherein the output end of the blowing device 601 is connected with a blowing pipeline 602, and the tail end of the blowing pipeline 602 is connected with a blowing unit; a blowing device mounting seat is also arranged, and the blowing device 601 is connected with the blowing device mounting seat through bolts.

The blowing device 601 is a heat-insulating blower; the end of the blow line 602 is aligned with the engine cylinder head; the blower mount is welded to the bed floor 607 of the test rack and avoids other interfering parts. The blowing device 601 is connected with the blowing device mounting seat through bolts, so that the device is simple in structure and convenient to detach and mount when the blower is replaced. By adopting the installation mode, the outlet of the air blowing pipeline 602 can be ensured to be aligned with the cylinder head, the cylinder head is cooled in time, the rapid cooling is realized, the normal test environment of the engine is ensured, the test result is more accurate, and the reliability of the test system is further improved.

Further, the air suction device comprises an air suction fan, the air suction fan is connected with an air suction unit through an air suction pipeline, an air outlet is further formed in the air suction pipeline, and the air suction unit corresponds to the air blowing unit.

The air suction device is an air suction fan, and is not shown in the drawings of the invention; the air suction unit is positioned opposite to the air blowing unit. The air suction assembly is matched with the air blowing assembly, wherein cold air blown by the air blowing unit flows through the surface of the cylinder head, heat on the surface of the cold air is taken away, and hot air is sucked away and discharged through the air suction unit located opposite to the air blowing unit. Therefore, the air flowing through the surface of the cylinder head can be quickly pumped away, so that the air circulation on the surface of the cylinder head is accelerated, and the cooling efficiency is improved.

Further, as shown in fig. 28 and 29, the blowing unit includes a blowing port 603 having a truncated cone shape, and further includes a connection flange 604, and a transition pipe 605 is provided between the blowing port 603 and the connection flange 604.

The air blowing port 603 at the tail end of the air blowing pipeline 602 is in a truncated cone shape, so that the pipeline can be enlarged, the air pressure at the outlet is increased, the flow rate of air is driven, and the air pressure of the pipeline of the air blowing port 603 can be increased and dispersed to be blown to the surface of the cylinder head. The air pressure after the flow velocity is improved can be directly blown to the cylinder head to accelerate the air circulation so as to further improve the cooling effect. The flange is connected by bolts, so that the connection is more convenient, and meanwhile, the air blowing openings 603 of different types can be quickly replaced, and the disassembly and the installation are convenient. In addition, the shape of the air blowing opening 603 is matched with the shape of the engine cylinder head, namely, the air blowing opening 603 is the same as the engine cylinder head in size, so that concentration of air blowing points can be avoided, the cylinder head is uniformly cooled, and the cooling efficiency is improved.

Further, a fixing device 606 is disposed on the blowing pipe 602. The securing device 606 may secure the tubing to the test body. In the present invention, the fixture 606 supports the blower line 602 mounted on the tester bed housing such that the blower port 603 is aligned with the test heat generating location. The pipeline shaking caused by wind pressure is avoided, and the accuracy of the air outlet and the stability of the whole pipeline are improved.

Further, as shown in fig. 30 and 31, the blower mounting base includes a bottom plate 607 and a supporting frame 608, the supporting frame 608 has a triangular structure, and a first connection hole 609 is provided on an inclined surface of the triangular structure.

The supporting frame 608 is fixedly connected with the blower through a first connecting hole 609 by a bolt, and the supporting frame 608 is in a triangular structure, in one embodiment of the invention, the triangle is preferably a right triangle, and one right angle side is welded with the base. The structure is convenient for the installation of air-blower to resort to in the adoption, in addition, the air-blower is installed in the inclined plane can make the contained angle between slope air outlet pipeline and the perpendicular pipeline become the obtuse angle, can make the wind pressure resistance of air outlet less like this, improves the wind pressure utilization ratio of air-blower.

Further, the supporting frame 608 is further provided with a groove 610, and a second connecting hole 611 is disposed in the groove 610. The support frame 608 is fixedly connected with the bottom plate 607 of the testing device through a second connecting hole 611 by bolts. The grooves 610 on the support frame 608 can reduce the weight of the parts, and in addition, the cavities formed by the grooves 610 are beneficial to heat dissipation of the blower, prevent equipment damage and prolong the service life of the blower.

Further, the filter box comprises a filter box body 701, wherein the front end of the filter box body 701 is connected with a box cover 702, the rear end of the filter box body 701 is connected with an air inlet joint 703, and the bottom end of the filter box body 701 is connected with a slide plate 704; a filter screen is arranged in the box cover 702, and an air filter element is arranged in the filter box 701.

As shown in fig. 32 to 38, in the present invention, the filter housing 701 and the cover 702 are both of a case-like structure, the filter housing 701 is respectively communicated with the cover 702 and the intake joint 703, and the intake joint 703 is communicated with the intake end of the engine; the filter box 701 is internally embedded and fixedly connected with an air filter element, the filter screen is embedded and fixedly connected in the box cover 702, and the filter box 701 and the box cover 702 and the filter box 701 and the slide plate 704 can be fixed in an integrated manner, an adhesive manner, a welding manner, a clamping manner, a hinge connection manner or a threaded connection manner.

In the engine test process, after air enters the box cover 702, the air is subjected to rough filtration through a filter screen arranged in the box cover 702, enters the filter box body 701 through the box cover 702, is subjected to fine filtration through an air filter element arranged in the filter box body 701, and intercepts small particles in the air, so that clean air is fed into the engine through an air inlet joint 703 communicated with an air inlet end of the engine, and the reliable operation of the engine is ensured.

The sliding plate 704 is fixed at the bottom end of the filtering box 701, in practical application, the sliding plate 704 with different sizes and different thicknesses can be selected to adjust the position and angle of the filtering box 701, so as to ensure the opposite position of the air inlet joint 703 and the engine interface. The air quality of the engine naturally sucked through the air inlet filter assembly is high, and the accuracy of the final test result of the engine can be ensured.

In this embodiment, the air filter element is filled in the filtering box 701, the filter screen is connected in the box cover 702 through the bolt, and the filtering box 701 is connected with the box cover 702 through the welding, so that the connection is firm, the potential air leakage point can be reduced, and the air tightness of the connection part of the filtering box 701 and the box cover 702 is ensured.

Further, a sliding frame 705 is further included, and the sliding frame 705 includes a first connecting plate 706 and a second connecting plate 707 connected to each other, where the first connecting plate 706 is connected to the sliding plate 704. The first connecting plate 706 and the second connecting plate 707, and the first connecting plate 706 and the sliding plate 704 may be fixed by integral molding, welding, or screwing.

In this embodiment, the first connecting plate 706 and the second connecting plate 707 are fixed by welding to form an included angle of approximately 90 degrees. The sliding frame 705 is driven by the air cylinder, through holes for the air cylinder piston rods to pass through are integrally formed in the second connecting plate 707, the number of the through holes is preferably 2, the through holes are uniformly distributed in the second connecting plate 707, the air cylinder piston rods are connected with the sliding frame 705 after passing through the through holes, the sliding frame 705 can be driven by the air cylinder to move up and down or left and right, the sliding frame 705 can drive the filter box 701 fixed on the sliding frame 705 to move, flexible adjustment of the position of the filter assembly is realized, and the accuracy and stability of connection of the air inlet joint 703 and the engine are ensured.

Furthermore, in other embodiments, the carriage 705 may also be driven by other driving means.

Further, a third connection plate 711 connected to the first connection plate 706 and the second connection plate 707 is also included. The third connecting plate 711, the first connecting plate 706 and the second connecting plate 707 can be integrally formed, adhered, welded, clamped, hinged or screwed, so as to further improve the stability of the sliding frame 705.

Further, an electric starting connector 708 is also connected to the second connecting plate 707. The second connecting plate 707 is connected to an electric starting joint 708 by bonding, welding or bolting, and the electric starting joint 708 is connected to the engine to achieve the effect of starting the engine.

In this embodiment, the through holes are formed on the second connecting plates 707 at two sides of the electric starting joint 708, so that the stability of the cylinder adjustment is ensured, the electric starting joint 708 is integrated on the second connecting plates 707, the effective detection of the engine is ensured, the whole test system is simpler, the area of the test site is greatly saved, the space allocation is more reasonable, the utilization rate is higher, and the cost is reduced.

Further, the filtering box 701 has a trapezoid structure with a large front and a small back. In the invention, one end of the filter box 701 with larger diameter is connected with the box cover 702, and the structure of the filter box 701 with larger front and smaller back can enhance the filtering effect of air and ensure that all air can pass through the filter element. In addition, in the process that air flows through the filtering box 701 from the box cover 702, the filtering box 701 with gradually reduced volume is compressed, the pressure and the flow speed of the compressed air are increased, and the air quantity entering the engine through the air inlet joint 703 is increased, so that the fuel of the engine is fully combusted, and the accuracy of the test result of the engine can be further ensured.

Further, a sensor connector 709 is disposed on the side of the filter housing 701. In this embodiment, the filter housing 701 is provided with a through hole matching with the sensor connector 709, and the sensor connector 709 is fixed to the side wall of the filter housing 701 through the through hole. The sensor joint 709 comprises a temperature sensor joint 709 and a pressure sensor joint 709, the temperature and the pressure of air in the filtering box 701 can be detected and monitored, whether the air inlet filtering assembly works normally or not is judged by observing the detected air temperature and pressure data, whether the filter element in the filtering box 701 is blocked or not is judged, and whether the filter element or the filter screen needs to be replaced or whether other equipment needs to be added or not is judged.

Further, the cover 702 has a square frame structure, and a cavity 710 for accommodating the filter screen is formed in the square frame structure. In the present invention, the cover 702 is formed by a "back" plate and a rectangular connecting plate, the "back" plate and the rectangular connecting plate enclose a cavity 710, and the filter screen is fixedly connected in the cavity 710. The front and rear 'return' plates are fixedly connected by the rectangular connecting plates through an integrated forming mode, an adhesive bonding mode, a welding mode, a riveting mode or a threaded connection mode, and the tightness of connection between the 'return' plates and the rectangular connecting plates is guaranteed preferably through welding and fixing.

Further, the exhaust device comprises an exhaust joint 801, the exhaust joint 801 is sequentially connected with an exhaust treatment device 802 and a muffler device 803 through pipelines, and an air outlet of the muffler device 803 is further connected with an air draft main pipe 804.

As shown in fig. 39 to 40, an exhaust joint 801 is used for connection with an exhaust port of an engine; the exhaust treatment device 802 is used for purifying exhaust gas discharged from an engine, removing harmful substances in the exhaust gas, and enabling the treated exhaust gas to reach the standard for discharge so as to reduce pollution to the environment and influence on health of testers. In this embodiment, the exhaust treatment device 802 may be selected as a three-way catalytic treatment device, and when the exhaust gas discharged from the engine passes through the three-way catalytic treatment device, the purifying agent in the three-way catalytic treatment device will enhance the activities of three gases of CO, hydrocarbon and NOx, so as to promote a certain oxidation-reduction chemical reaction to convert into harmless gas, so that the automobile exhaust gas can be purified.

The muffler 803 is respectively communicated with the exhaust joint 801 and the main exhaust pipe 804 in a welding or flange connection mode, so that exhaust noise of an engine can be reduced, a good noise elimination and reduction effect is achieved, high-temperature gas can be safely and effectively discharged, and the muffler has the characteristics of convenience in installation, long service life and the like, and the safety and reliability of the operation of an exhaust pipeline are guaranteed. Preferably, the steel is made of carbon steel or stainless steel, and the like, has enough heat resistance and corrosion resistance, and is durable in use.

The exhaust main pipe 804 is of a tubular structure, one end of the exhaust main pipe 804 is communicated with the muffler 803, the other end of the exhaust main pipe extends out of the test system, exhaust gas exhausted from the engine sequentially passes through the exhaust joint 801, the exhaust treatment device 802 and the muffler 803, and finally is exhausted out of the test system through the exhaust main pipe 804, so that the influence of exhaust on the test of the engine is reduced.

Further, the main exhaust pipe 804 includes a first pipe 805 and a second pipe 806 connected to each other, where the first pipe 805 is connected to an air outlet of the muffler 803, and the second pipe 806 is provided with an air outlet.

The air exit of second pipeline 806 is as the air exit of convulsions person in charge 804, and first pipeline 805 and second pipeline 806 communicate through modes such as integrated into one piece, welding, threaded connection or flange joint, constitute convulsions person in charge 804 when the mode of assembling by more than 2 pipelines, more do benefit to exhaust structure's transportation, installation, dismantlement, or the storage after dismantling for whole occupation space after dismantling is also little.

Further, an engine cooling air duct 807 is also connected to the second pipe 806.

During operation, the engine will emit a lot of heat into the test system, and the temperature of the air around the engine will be increased due to the heat transfer, and the air after the temperature increase will flow into the engine cooling air duct 807 and finally be discharged out of the test system through the second duct 806.

The engine cooling air duct 807 is communicated with the second pipeline 806 through an integrated forming mode, a welding mode, a threaded connection mode or a flange connection mode and the like, and can exhaust air with temperature rising caused by heat dissipation of an engine in the test system and gas discharged in the engine operation process out of the test system through the second pipeline 806, so that the integration level of the whole test system is higher, the exhaust structure is more compact, the volume of the test system can be reduced, and the whole test system is more regular and attractive.

In the present embodiment, the engine cooling tunnel 807 is located above the space of the engine in the space communication port with the engine, facilitating the flow of the rising hot air out of the engine cooling tunnel 807.

Further, a loading motor cooling air duct 808 is further connected to the second duct 806.

The loading device for engine test can also emit a large amount of heat into the test system in the running process, and the temperature of the air around the loading device can be increased due to the heat transfer effect; and the air with the increased temperature in the space of the loading device flows into the cooling air duct 808 of the loading motor and finally is discharged out of the testing system through the second pipeline 806, so that the continuous heating or the overhigh temperature of the loading device can be prevented from influencing the operation effect of the loading device, and the accuracy of the engine testing result is ensured. In this embodiment, the loading device is a loading motor.

The loading motor cooling air duct 808 is communicated with the second pipeline 806 through an integrated forming mode, a welding mode, a threaded connection mode or a flange connection mode and the like, so that air with temperature rising caused by heat dissipation of an engine and heat dissipation of a loading device in a testing system and gas discharged in the running process of the engine can be discharged out of the testing system through the second pipeline 806, the heat dissipation and air discharge pipelines are unified, the integration level of the whole testing system is higher, the air discharge structure is more compact, the volume of the testing system can be reduced, and the whole testing system is more regular and attractive.

Further, the loading motor cooling air duct 808 includes a first air inlet pipe 809 and a first air outlet pipe 810, and the first air outlet pipe 810 is connected to the second duct 806.

One end of the first air inlet pipe 809 is communicated with the outside of the test system, and the other end is communicated with the space of the loading device in the test system in a welding or threaded connection mode.

The two ends of the first air outlet pipe 810 are respectively communicated with the space of the loading device in the testing system and the second pipeline 806 through an integrated forming, welding or threaded connection mode.

The air outside the test system flows into the space of the loading device through the first air inlet pipe 809 and flows into the second pipeline 806 through the first air outlet pipe 810, so that the air outside the test system is discharged, the cooling air duct 808 of the loading motor forms an air flowing circulating air duct, and hot air in the space of the loading device is taken out in the air circulating process, and meanwhile the loading device is cooled, so that the running effect of the loading device and the test result of the final engine are ensured.

Further, the position of the spatial communication port between the first air inlet pipe 809 and the loading device is lower than the position of the spatial communication port between the first air outlet pipe 810 and the loading device. The hot air in the space of the loading device is in an ascending state, the position of the space communication port of the first air inlet pipe 809 and the loading device is lower than that of the space communication port of the first air outlet pipe 810 and the loading device, so that the air in the space of the loading device can be updated, the cooling effect on the loading device is better, and the flowing circulation of the air is facilitated.

Further, a first valve 811 is further disposed on the first pipe 805. The first valve 811 is preferably a gas path one-way valve, so that the gas flowing into the second pipeline 806 through the engine cooling air duct 807 and the loading motor cooling air duct 808 can be prevented from flowing back to the muffler 803 through the first valve 811, and the smoothness of gas flow can be effectively ensured.

Further, a second valve and/or a third valve are provided at the engine cooling air duct 807 and/or the first air outlet duct 810. The second valve and the third valve are preferably air passage check valves, which prevent hot air from being guided to the space of the engine and/or the loading device.

Further, an exhaust fan is connected to the exhaust main pipe 804. One end of the air draft main pipe 804 is connected with the muffler 803, the other end is connected with the air draft fan, and air in the test system is pumped out of the test system through the air draft fan, so that the flow speed of the air in the test system and the pipeline is enhanced, and the heat dissipation effect in the test system is better.

The foregoing is a preferred embodiment of the present invention, and it should be understood that those skilled in the art can derive relevant technical solutions based on the prior art through logic analysis, reasoning or experiments without creative effort, and thus, all the relevant technical solutions should be within the protection scope of the present claims.

Claims

1. An engine testing device, characterized in that: the testing device comprises a rack, wherein the rack comprises a foundation frame (901) and a shield (902) arranged on the foundation frame (901), and the foundation frame (901) and the shield (902) are surrounded to form a testing space; the foundation frame (901) is of a box structure, and a first space, a second space and a third space are formed in the foundation frame (901) through separation of a partition board; the first space is internally provided with a fuel oil supply device, the second space is internally provided with a cooling water supply device, and the third space is internally provided with a cylinder head cooling assembly; the test space is divided into a mounting space positioned on the right side and a loading space positioned on the left side by a partition plate in the shield (902); an engine tooling frame, an engine tooling moving device and an air inlet filtering assembly are arranged in the mounting space, a loading device and an exhaust device are arranged in the loading space, the exhaust device comprises an exhaust joint (801), the exhaust joint (801) is sequentially connected with an exhaust treatment device (802) and a silencing device (803) through pipelines, and an air outlet of the silencing device (803) is also connected with an air draft main pipe (804); the main air draft pipe comprises a first pipeline (805) and a second pipeline (806) which are connected with each other, the first pipeline (805) is connected with an air outlet of the muffler device (803), and the second pipeline (806) is provided with an air outlet; the second pipeline (806) is also connected with an engine cooling air duct (807) and a loading motor cooling air duct (808); the loading motor cooling air duct (808) comprises a first air inlet pipe (809) and a first air outlet pipe (810), and the first air outlet pipe (810) is connected with the second pipeline (806); the space communication port position of the first air inlet pipe (809) and the loading device is lower than the space communication port position of the first air outlet pipe (810) and the loading device, a first valve (811) is further arranged on the first pipeline (805), and a second valve and/or a third valve are arranged at the position of the engine cooling air duct (807) and/or the position of the first air outlet pipe (810).

2. An engine testing apparatus according to claim 1, wherein: the engine mounting frame comprises a bottom plate (401), wherein a sliding rail (402) and a pulley (403) matched with the sliding rail (402) are arranged on the bottom plate (401); a first base (404) is arranged on the left side of the sliding rail (402), and a first limiting part (405) and a second limiting part (406) are arranged at the front end of the first base (404); the rear end of the first base (404) is provided with a first pressing part (407) and a second pressing part (408).

3. An engine test apparatus according to claim 1 or 2, wherein: the engine tool moving device comprises a base plate (501), wherein a positioning device (502) is arranged on the base plate (501), and a first driving device (503) is connected below the base plate (501).

4. An engine test apparatus according to claim 1 or 2, wherein: the loading device comprises a first base seat (101), and a load transmission shaft (102) and a load motor (103) are arranged on the first base seat (101); the load transmission shaft (102) is connected with the first base seat (101) through a bearing seat (104), one end of the load transmission shaft (102) is connected with the load motor (103), and the other end of the load transmission shaft is provided with a connecting disc (105).

5. An engine test apparatus as set forth in claim 3 wherein: the loading device comprises a first base seat (101), and a load transmission shaft (102) and a load motor (103) are arranged on the first base seat (101); the load transmission shaft (102) is connected with the first base seat (101) through a bearing seat (104), one end of the load transmission shaft (102) is connected with the load motor (103), and the other end of the load transmission shaft is provided with a connecting disc (105).

6. An engine test apparatus as set forth in claim 1, 2 or 5, wherein: the fuel supply device comprises a base (201) and a first base plate (202), wherein the first base plate (202) is connected with the base (201) through a first sliding mechanism (203); a fuel supply unit is provided on the first base plate (202), and the fuel supply unit includes a fuel tank (204), and a fuel delivery line and a fuel recovery line connected to the fuel tank (204).

7. An engine test apparatus as set forth in claim 3 wherein: the fuel supply device comprises a base (201) and a first base plate (202), wherein the first base plate (202) is connected with the base (201) through a first sliding mechanism (203); a fuel supply unit is provided on the first base plate (202), and the fuel supply unit includes a fuel tank (204), and a fuel delivery line and a fuel recovery line connected to the fuel tank (204).

8. An engine test apparatus as set forth in claim 4 wherein: the fuel supply device comprises a base (201) and a first base plate (202), wherein the first base plate (202) is connected with the base (201) through a first sliding mechanism (203); a fuel supply unit is provided on the first base plate (202), and the fuel supply unit includes a fuel tank (204), and a fuel delivery line and a fuel recovery line connected to the fuel tank (204).

9. An engine test apparatus as set forth in claim 1, 2, 5, 7 or 8, wherein: the cooling water supply device comprises a base (301) and a first base plate (302), wherein the first base plate (302) is connected with the base (301) through a first sliding mechanism (303); a cooling water supply unit is provided on the first base plate (302), and includes a cooling water tank (304), and a cooling water delivery line and a cooling water recovery line connected to the cooling water tank (304).

10. An engine test apparatus as set forth in claim 3 wherein: the cooling water supply device comprises a base (301) and a first base plate (302), wherein the first base plate (302) is connected with the base (301) through a first sliding mechanism (303); a cooling water supply unit is provided on the first base plate (302), and includes a cooling water tank (304), and a cooling water delivery line and a cooling water recovery line connected to the cooling water tank (304).

11. An engine test apparatus as set forth in claim 4 wherein: the cooling water supply device comprises a base (301) and a first base plate (302), wherein the first base plate (302) is connected with the base (301) through a first sliding mechanism (303); a cooling water supply unit is provided on the first base plate (302), and includes a cooling water tank (304), and a cooling water delivery line and a cooling water recovery line connected to the cooling water tank (304).

12. An engine test apparatus as set forth in claim 6 wherein: the cooling water supply device comprises a base (301) and a first base plate (302), wherein the first base plate (302) is connected with the base (301) through a first sliding mechanism (303); a cooling water supply unit is provided on the first base plate (302), and includes a cooling water tank (304), and a cooling water delivery line and a cooling water recovery line connected to the cooling water tank (304).

13. An engine test apparatus as set forth in claim 1, 2, 5, 7, 8, 10, 11 or 12, wherein: the cylinder head cooling assembly comprises a blowing device (601), the output end of the blowing device (601) is connected with a blowing pipeline (602), and the tail end of the blowing pipeline (602) is connected with a blowing unit; and a blowing device mounting seat is also arranged, and the blowing device (601) is connected with the blowing device mounting seat through bolts.

14. An engine test apparatus as set forth in claim 3 wherein: the cylinder head cooling assembly comprises a blowing device (601), the output end of the blowing device (601) is connected with a blowing pipeline (602), and the tail end of the blowing pipeline (602) is connected with a blowing unit; and a blowing device mounting seat is also arranged, and the blowing device (601) is connected with the blowing device mounting seat through bolts.

15. An engine test apparatus as set forth in claim 4 wherein: the cylinder head cooling assembly comprises a blowing device (601), the output end of the blowing device (601) is connected with a blowing pipeline (602), and the tail end of the blowing pipeline (602) is connected with a blowing unit; and a blowing device mounting seat is also arranged, and the blowing device (601) is connected with the blowing device mounting seat through bolts.

16. An engine test apparatus as set forth in claim 6 wherein: the cylinder head cooling assembly comprises a blowing device (601), the output end of the blowing device (601) is connected with a blowing pipeline (602), and the tail end of the blowing pipeline (602) is connected with a blowing unit; and a blowing device mounting seat is also arranged, and the blowing device (601) is connected with the blowing device mounting seat through bolts.

17. An engine test apparatus as set forth in claim 9 wherein: the cylinder head cooling assembly comprises a blowing device (601), the output end of the blowing device (601) is connected with a blowing pipeline (602), and the tail end of the blowing pipeline (602) is connected with a blowing unit; and a blowing device mounting seat is also arranged, and the blowing device (601) is connected with the blowing device mounting seat through bolts.

18. An engine test apparatus according to claim 1, 2, 5, 7, 8, 10, 11, 12, 14, 15, 16 or 17, wherein: the air inlet filter assembly comprises a filter box body (701), the front end of the filter box body (701) is connected with a box cover (702), the rear end of the filter box body (701) is connected with an air inlet joint (703), and the bottom end of the filter box body (701) is connected with a sliding plate (704); a filter screen is arranged in the box cover (702), and an air filter element is arranged in the filter box body (701).

19. An engine test apparatus as set forth in claim 3 wherein: the air inlet filter assembly comprises a filter box body (701), the front end of the filter box body (701) is connected with a box cover (702), the rear end of the filter box body (701) is connected with an air inlet joint (703), and the bottom end of the filter box body (701) is connected with a sliding plate (704); a filter screen is arranged in the box cover (702), and an air filter element is arranged in the filter box body (701).

20. An engine test apparatus as set forth in claim 4 wherein: the air inlet filter assembly comprises a filter box body (701), the front end of the filter box body (701) is connected with a box cover (702), the rear end of the filter box body (701) is connected with an air inlet joint (703), and the bottom end of the filter box body (701) is connected with a sliding plate (704); a filter screen is arranged in the box cover (702), and an air filter element is arranged in the filter box body (701).

21. An engine test apparatus as set forth in claim 6 wherein: the air inlet filter assembly comprises a filter box body (701), the front end of the filter box body (701) is connected with a box cover (702), the rear end of the filter box body (701) is connected with an air inlet joint (703), and the bottom end of the filter box body (701) is connected with a sliding plate (704); a filter screen is arranged in the box cover (702), and an air filter element is arranged in the filter box body (701).

22. An engine test apparatus as set forth in claim 9 wherein: the air inlet filter assembly comprises a filter box body (701), the front end of the filter box body (701) is connected with a box cover (702), the rear end of the filter box body (701) is connected with an air inlet joint (703), and the bottom end of the filter box body (701) is connected with a sliding plate (704); a filter screen is arranged in the box cover (702), and an air filter element is arranged in the filter box body (701).

23. An engine testing apparatus according to claim 13, wherein: the air inlet filter assembly comprises a filter box body (701), the front end of the filter box body (701) is connected with a box cover (702), the rear end of the filter box body (701) is connected with an air inlet joint (703), and the bottom end of the filter box body (701) is connected with a sliding plate (704); a filter screen is arranged in the box cover (702), and an air filter element is arranged in the filter box body (701).