FR2799546A1 - MODULAR INSTALLATION OF INDUSTRIAL TESTS, AND MODULES OF SUCH A INSTALLATION - Google Patents

Abstract

The invention concerns a test bench module (1) comprising a test cell (4) for receiving an equipment to be tested, provided with means (10, 16) for reproducing operating conditions of the equipment and means for measuring the operating parameters of the equipment. Each test bench module is associated with a technical support module (2) located above it. Said module (2) comprises in particular means for circulating a heating medium in the test cell, for regulating thermal parameters while the equipment operates, and means for cooling said heating medium. The association of each test bench module (1) with its technical support module (2) advantageously constitutes a self-contained modular assembly adapted to be set up outdoors. An installation may include several such assemblies, the modules being individually transportable.

Description

The present invention relates to test benches used in the industry for testing equipment in development or in the field of industrial equipment. </ I> production. The invention finds particular applications in the automotive industry, the tested equipment may for example include, with more or less accessories, heat engines, gearboxes, exhaust lines, or motor groups. thrusters.

The installations usually used to carry out such tests comprise test cells provided with devices for supporting the equipment under test, means for simulating operating conditions of the equipment and means for measuring operating parameters of the equipment. 'equipment.

The installation comprises one or more test cells, associated with a technical support infrastructure, serving in particular to deliver various fluids (cooling fluids of various elements of the tested equipment or accessories, fuel, air-combustion, electricity , compressed air for pneumatic circuits, etc.), to ensure satisfactory ambient conditions and safety conditions in the test cells (cell ventilation, fire prevention devices, etc.), and possibly to provide treatments to preserve the environment of the installation (extraction, cooling, exhaust treatment).

In addition, the required infrastructure must most often include buildings to house the test cells and all or part of the technical support facilities. The installation of a new test bed then requires the construction of one or more new buildings or the rearrangement of pre-existing industrial buildings.

Modular architectures of test cells have been proposed, which offer compact solutions and which make it possible to easily form multi-cell installations, which is often desired by manufacturers. Although, in some proposed solutions, the cell can be associated with ancillary devices, in particular for the ventilation of the cell or the exhaust gas extraction, it does not have sufficient autonomy to allow independent installation of an external infrastructure (construction and / or technical support). Because of this constraint, setting up a test installation is a relatively long and expensive operation. This disadvantage is all the more noticeable since the pace of development of new engines by the automobile industry is accelerating.

On the other hand, manufacturers often wish to be able to absorb a specific overload of tests on a given site without increasing their test resources (equipment flexibility). In addition to saving money, reuse of the same test means preserves the test methodology and provides good reproducibility of test conditions at different sites.

The present invention aims to meet the above needs. According to the invention, there is provided an industrial test facility, comprising at least one test bench module and technical support means, in which each test bench module comprises a test cell for receiving a test module. equipment to be tested, provided with simulation means for reproducing operating conditions of the equipment and means for measuring operating parameters of the equipment. Each test bench module is individually associated with respective technical support means, comprising at least one technical support module placed against a face of said test bench module and comprising means for circulating a coolant in the cell for testing said module, for regulating thermal parameters during the operation of the equipment, and means for cooling the coolant.

The installation has a modular structure, both for the part comprising the test cell and for the technical support means, which makes it possible to rationalize the general organization of the test bench. In particular, the technical support module comprises the means for independently providing the heat transfer liquid for regulating various thermal parameters. Assemblies formed by combining modules therefore no longer need to be connected to an outdoor cooling tower, which allows them to have a large autonomy.

The test bench and technical support modules are preferably individually transportable. They thus form compact assemblies, which the manufacturer can relatively easily move other sites.

The technical support module is typically placed above the test bench module with which it is associated, which makes it possible to keep the compactness of the assembly, to easily juxtapose several assemblies, and to evacuate the upper part of the assembly. together the gases extracted by technical support module.

In a particularly advantageous embodiment of the installation, the combination of each test bench module with respective technical support means forms a modular assembly suitable for installation in an outdoor environment. In this case, the industrialist is no longer dependent on a building infrastructure to set up such an installation.

Each test bench module advantageously comprises a space adjacent to the test cell, which forms a control zone receiving control members and supervising tests by an operator. When juxtaposing several test bench modules associated with their respective technical support means, it is possible to open the side walls of the test bench modules to the right of their control areas, so that these zones juxtaposed controls form a control room shared by several test cells.

The following functions can also be provided in the technical support module associated with a test bench module - power supply equipment located in said modules; - fire detection in the test cell and / or technical support module, and release of an inert gas upon detection; - Supply of compressed air to supply pneumatic circuits located in the test cell, the technical support module and / or the control zone; - blowing air into the volume of the test cell and extracting air out of this volume; extraction and cooling of exhaust gases in the case where the equipment under test comprises a heat engine; - Supply of combustion air temperature controlled to the engine. Another aspect of the invention relates to prefabricated modules, arranged to constitute test bench modules and technical support of an installation as defined above.

Other features and advantages of the present invention will appear in the following description of nonlimiting exemplary embodiments, with reference to the accompanying drawings, in which - Figure 1 is a perspective view of a formed assembly, in accordance with the invention, by associating a test bench module and a technical support module; - Figure 2 is a schematic perspective view of the circulation means, cooling and water distribution in an assembly according to Figure 1; FIG. 3 is a perspective view of the cooling water distribution means located in the test cell; FIG. 4 is a block diagram of the means shown in FIG. 2; FIG. 5 is a block diagram of cooling circuits to which the distribution means of FIG. 3 are connected; - Figures 6 and 7 are respectively a schematic elevational view and a block diagram of the air blowing and extraction means provided in the assembly of Figure 1; FIGS. 8 and 9 are diagrammatic views respectively in elevation and in perspective of the exhaust gas extraction means provided in the assembly of FIG. 1; - Figure 10 is a schematic elevational view of compressed air distribution circuits provided throughout Figure 1; FIG. 11 is a block diagram of fire safety means provided in the assembly of FIG. 1; and FIGS. 12 and 13 are perspective diagrams of test installations according to the invention, made from sets of the kind shown in FIG.

The test installation represented by way of example in FIG. 1 is an assembly made by combining a lower module 1 (test bench module) and an upper module 2 (technical support module).

Each module 1, 2 has a frame consisting for example of a metal beam assembly, on which are mounted partitions preferably incorporating sound insulation materials. The frame each module 1, 2 is provided with slings attachment points, shown, for lifting the module to put it on a transport vehicle. Preferably, each module 1,2 has dimensions compatible with the shipping templates, which allows the test facility to be easily transported from one industrial site to another. By way of example, each module 1, 2 has a height of 3 meters and a width of 4 meters, length being 10 meters for the lower module 1 and 9 meters for the upper module 2.

The lower module 1 comprises two compartments separated by a partition 3, namely a test cell 4 and a control zone 5.

The test cell 4 comprises a marble 6 integrated in its floor, intended to receive the support 7 of the equipment under test. In the following of. the present description, it will be considered that this equipment tested is a heat engine, without this being limiting. The support 7 is advantageously a carriage on which the motor is mounted and for transporting it in the test cell. The front face of the lower module 1 is provided with doors 8 facing the marble 6 in order to easily bring the carriage 7 into and out of the test cell 4.

Marble 6 further supports a load machine 10 to be coupled to the motor output shaft to simulate the load applied to the motor in operation. The charging machine 10 is, for example, an eddy current brake, or an asynchronous machine.

To supply fuel to the engine under test, the test cell 4 has pipes grouped together at a plate 11 located on the inner side of the front face of the lower module 1. These pipes communicate with the inlet, and possibly a fuel outlet present outside the module for connection to a tank, and with a chute located under the floor of the test cell to bring the fuel to the edge of the marble 6, and from there to the engine when 'he's installed. The plate 11 is arranged to receive fuel flow measuring members (if the fuel consumption is part of the measuring parameters), and possibly fuel conditioning members for heating or cooling (if its temperature is part of the parameters defined for the test).

A heat-transfer liquid, which may simply be water, is also brought close to the marble 6 in order to cool various elements of the engine under test, and possibly of the charging machine 10. This water circulates in a network of pipes 12 defining a plurality of circuits. cooling from a range of distribution 13 located on the inner side of a side wall of the lower module 1. These pipes 12 pass under the floor of the test cell 4, between panoplie 13 the rear edge of the marble 6 .

One or more ducts 15 are also mounted on the marble 6, in order to recover the exhaust gases from the engine and to send them over the test cell. In the example shown, a duct 15 is provided on each side of the marble, which allows to easily connect the exhaust pipe of the engine, it is located on the left side of the right side of the engine. If required, the exhaust gas outlet ducts may be provided with catalysts.

Optionally, the test cell 4 may comprise a jacket 16 for blowing combustion air on the engine air intake.

The test cell 4 is furthermore equipped with various sensors for measuring engine operating parameters (measurements of temperature, pressure, flow, speed, torque, electrical quantities, etc.). These sensors are connected to measurement processing circuits which can be placed in a control cabinet 18 located in the control zone 5 of the lower module 1.

This zone 5 also contains a control panel 19 for the conduct of tests by an operator. The partition wall 3 is provided with a door and a window for communicating the test cell 4 with the control zone 5 and to allow the visual observation of the cell 4 by the operator being tested. . Another door (not shown) is provided for access to the control zone 5 from the outside.

The upper face of the test bench module 1 has a number of connections (ventilation air, combustion air, exhaust gas, cooling water, electrical and pneumatic circuits, fire safety, ...) located at locations well determined. This upper face is an interface with the technical support module 2, whose lower face has corresponding connections. The module 2 having dimensions adapted to those of the module 1, its mounting is simply to position it above the module 1 and to perform the coupling of the corresponding connections. The slightly longer length of the module 1 leaves above the control zone 5 a gateway 29 extending over the width of the assembly and allowing access to the interior of the upper module 2 by a door 9.

In the general view of FIG. 1, we see some members of the upper module 2, which will be described in more detail below, namely the central air blower 20 for ventilation in the test cell 4, the combustion air handling unit 21 sent into the duct 16, a cabinet 22 for supplying electrical power to various appliances located in modules 1 and 2, the exhaust gas extraction and treatment system 23, and 24 inert gas cylinders (C02) provided for fire protection, housed in a cabin opening towards the outside of the module 2, the bridge 29.

Three chimneys 25, 26, 27 are mounted above the upper module 2, respectively to expel the exhaust gas and the ventilation air of the test cell and to ventilate the upper module 2. For aesthetic reasons, a roof element 28 may be placed on top of the module 2 in order to partially mask the chimneys 25-27 without hindering their draft.

Figures 2 to 5 show the means used to cool the different elements of the engine tested. These means comprise, in the upper module 2, a cooling water supply station 30, and a cooling tower 31. The station 30 comprises an expansion tank 32 containing cooled water from the tower 31 and regulating and pumping means 33 for supplying cooling water from the tank 32 into an intake pipe 34 to the test cell. The water recovered from the test cell by a return line 35 is sent to the cooling tower 31.

The cooling tower 31, whose power is an example of the order of 400 kW, comprises an air-heat exchanger 36. The cooling air, circulated by a fan 36a, is taken through a grid 37 provided on the front panel of the upper module 2 (see Figures 12 and 13). A distribution plenum 38 located on the inner side of this facade distributes the air taken through the grid 37 between the cooling tower 31 and the combustion air and combustion air central units 20, 21.

The cooling water supply station may further comprise an ice water production unit 39, provided when the operating conditions tested require water at very low temperature. The circulation of this chilled water can be carried out by bypass on the lines 34 and 35. In the example shown in FIGS. 2 to 5, five cooling circuits are provided in the test cell, namely cooling circuits. EM for engine water, HM for engine oil, AT for turbocharger air (used when the engine is equipped with a turbocharger), EF for cooling the load machine 10 (used when the it requires cooling), and AX for the cooling of any auxiliary equipment.

In the test cell 4, the dispensing pan 1 comprises cooling water intake and return lines 40, 41, respectively connected to those 34, 35 of the upper module 2 (FIGS. 3 and 4). The intake duct 40 opens into a nanny 40a located under the floor of the test cell 4, from which the ducts of the network 12 leave. The role of the nanny 40a to balance the pressures of the water delivered to the different circuits. On the rear edge of the marble 6, a row 42 of ten pipes out of the floor of the test cell. These ten lines comprise five cooling system start pipes from the nanny 40a and five return lines connected to the line 41. Stop valves are provided at row 42 and in the dispensing pan. 13 for selectively commissioning the cooling circuits as needed.

The cooling circuits comprise flexible hoses 43-46 mounted on the starting and return lines at the row 42 by means of quick couplings. In the example shown in FIG. 5, these pipes 43 are connected directly to the charging machine 10 for the circuit EF, and the pipes 44, 45, 46 are respectively connected to heat exchangers 47, 48, 49 for the circuits EM, HM and AT, the auxiliary circuit AX not being used.

The exchanger 47 has a secondary circuit 51 connected to the water pump 52 of the engine M. The exchanger 48 has a secondary circuit containing the engine oil. This exchanger 48 is for example located at the oil filter 53 of the engine M. When the engine M is turbocharged, the exchanger 49 is installed on the plate 6 to cool the inlet air of the turbocharger.

The EM, HM and AT circuits are regulated. The secondary circuits of the exchangers 47, 48, 49 are provided with temperature sensors 57, 58, 59 whose output signals are addressed to a control unit 60. This comprises three conventional control circuits 61, 62, 63 (eg PID controllers) delivering three control signals S1, S3. These signals S1, S2, S3 respectively control flow control valves located in panopie 13 and belonging to the circuits EM, HM For example, the control valves 64-66 are three-way valves having two connected inputs. the departure and return pipes of the circuit concerned, and an output connected to the general return line 41 (Figures 3 and 4). The flow control controlled by the circuits 61-63 makes it possible to adjust each temperature parameter to a set value defined by the operator at the control panel 19.

Regarding the supply of cooling water, it is noted that it is advantageous to provide the feed station 30 in the upper module 2, and the dispensing pan 13 in the lower module 1. The functional association these organs then consists essentially of connecting the inlet lines 34, 40 and return 35, 41, the entire distribution and regulation being ensured at the lower level.

FIG. 5 shows that the water and oil circuits 51, 54 of the engine can be provided with pressure gauges 55, 56. Many other sensors can be installed on the engine M to measure various operating parameters of the engine, and send the corresponding measurement signals to the control cabinet 18.

Figures 6 and 7 show the ventilation means of the test cell 4. The blowing unit 20 comprises a centrifugal fan motor unit 70 having for example a flow rate of the order of 30 000 m3 / h. Between this group 70 and the air distribution plenum 38 taken from the front of the upper module 2, the heating unit 20 comprises a filter unit 71, a silencer 72 and a heating battery 73 which is put into service when a heating element ambient air is required in test cell 4 (eg maintenance of frost-free conditions). The air delivered by the fan 70 is diffused in the test cell by a plenum 75 arranged on the ceiling of the test cell, preferably above the marble 6.

The system for extracting ambient air in the cell comprises a column 76 extending in the upper module 2, between an air intake opening 77 provided on the ceiling of the test cell and the chimney 26. column 76 contains a muffler 78 placed above the gate located in the opening 77, and a centrifugal fan motor 79, whose maximum flow rate is for example of the order of 25,000 m 3 / h, which expels the 26. Another silencer 80 is placed between the fan unit 79 and the chimney 26, which is arranged to prevent the flow of rainwater.

The central 21 for supplying combustion air (FIGS. 1 and 6) comprises an air intake in the distribution plenum 38, a filter, temperature and hygrometry control members, and a motor-fan unit, of which the maximum flow rate is, for example, of the order of 1,200 m3 / h, which expels the treated combustion air towards insulated sheath 16. It is provided, in test cell 4, with an articulated arm allowing to bring the mouth of the duct 16 level of the engine air intake, and to remove it when operators need easy access to the engine.

The exhaust gas extraction system out of the cell comprises a column 82 extending into the upper module 2 (FIG. 8 and between an opening 83 provided on the ceiling of the test cell 4 and the chimney 25. Column 82 delimits a chamber 84 containing a muffler. The muffler 85 communicates with the exhaust ducts 15 located in the test cell 4 via a connection 86 located at the interface between the modules 1 and 2. The silencer 85 is insulated, since it receives still hot exhaust gas at the outlet of the duct 15 (typically of the order of 500 C.) In order to ensure sufficient cooling, gas leaving the silencer 85 is mixed in the chamber. 84 to the air taken from the cell through the opening 83. The chamber 84 is depressurized by means of a centrifugal fan, whose maximum flow rate is an example of the order of 5000 m3 / h, housed in a turret at the foot of the fireplace 25. The mixture is sucked upwards into the chamber 84, for example due to a volume of exhaust gas for 0 volumes of air iron.

The values of the flow rates by the central units 20 and 21 and extraction by the columns 76 and 82 are set jointly. In particular, it is possible to provide high blowing speeds through the central unit 20 and extraction via the column 76 when the ambient temperature or that of the expelled air is relatively high or when hydrocarbons are detected in the expelled air, and speeds more moderate for other test conditions, with a low speed regime when it is simply to maintain the test bench in frost-free conditions. As shown in FIG. 10, the upper module 2 also contains a compressor 90 associated with a compressed air reservoir 91. This latter supplies compressed air with pneumatic circuits 92, 93 located in the upper module 2 and the lower module 1 a suitable connector 94 being placed at a specified location at the interface between the two modules. The pneumatic circuits 93 located in the lower module 1 may comprise pressure switches 95, 96 for supplying the control valves 66 of the cooling water distribution set 13 and other pneumatically controlled regulating valves possibly mounted on the plate 11 for the distribution of fuel to the engine. They may also comprise compressed air intakes 97 distributed in the test cell 4 and / or the control room 5 to allow the operators to use compressed air by means of hoses 98 provided with quick couplings. Such compressed air intakes 99 may also be provided in the upper module 2.

The fire safety means shown in FIG. 11 comprise a housing 100 situated in the control zone 5, connected to detection means distributed in the upper module 2, the test cell 4, the control zone 5 and, where appropriate, the control zone 5. outside the set. In the example shown, the detection means comprise an optical flame detector 101 located in the test cell 4, an optical smoke detector 102 located in the test cell 4, a button 103 operable by the operator in the control zone 5 after breakage of an ice break, and ionic smoke detectors 104 distributed in the installation. When fire conditions are detected, the housing 100 may for example trigger the following operations - cut off the arrival of the fuel; - stop ventilation; - engine bench stop; - activation of a siren and a light signaling; - sending an alert signal to the outside; opening of a valve 105 to discharge into the test cell 4 and possibly into the upper module 2 and the control zone 5 of the CO2 stored in the bottles 24, via a network of pipes 106 ranging from the cabin containing the bottles 24 up to nozzles distributed in the areas to be protected. The security means of the installation also comprise a detector 108 of hydrocarbons in the ambient air of the test cell 4 and a carbon monoxide detector 109. These two detectors are connected to a housing 110 which triggers an alarm. in case of detection, and controls the fan 79 of the extraction column 76 to operate at the maximum speed. If hydrocarbons are detected, the arrival of the fuel is, in addition, cut off.

The installation that has just been described has a great autonomy vis-à-vis its environment. In particular, it does not need to be associated with building infrastructure or outdoor treatment devices such as cooling towers.

Regarding the supply of fluids, it is sufficient to provide an external connection to a fuel tank, a simple makeup of water (the cooling means operating essentially in a closed circuit) and an evacuation of the drained water. Regarding the electricity, it is enough to a connection to the sector, the cabinets 22 located in upper module ensuring the power supply and the current distribution of different apparatus of the test bench.

Regarding the processing of measurements, the installation can be delivered equipped with a number of treatment channels and bench control software. It is also possible to use the circuits and software desired by each manufacturer.

Assemblies 1, 2 such as that shown in Figures 1 to 11 may be placed side by side to form multi-cell test facilities, since their two side faces are flat and unobstructed.

FIG. 12 thus shows a test installation comprising a row of three sets 1, 2 juxtaposed along their lateral faces. The partitions of the lateral faces being removable, they can be removed at the juxtaposed control zones 5, to form a single control room for the three test cells 4.

Figure 12 further shows that the assemblies 1, 2 can be associated with other modular building elements 120, level with the lower modules 1, providing premises for people working on the test bench.

In the two-dimensional arrangement of six modular assemblies shown in FIG. 13, the rear faces of the assemblies 1, 2 are also disengaged, which makes it possible to juxtapose two rows of several sets along these rear faces.

The control zones 5 being located towards the rear of the lower modules 1, it is also possible to group them back to back to enlarge the control room and share it between several test cells. Similarly, the gateways 29 located above the control areas 5 can be grouped into a wider gateway.

Claims (26)

REVEN DICATIONS 1. Industrial test facility, comprising at least one test bench module (1) and technical support means (2), wherein each test bench module comprises a test cell (4) for receiving equipment to be tested, provided with simulation means (10, 16, 47-49) for reproducing operating conditions of the equipment and means (55 for measuring operating parameters of the equipment, characterized in that each module of a test stand (1) is individually associated with respective technical support means, comprising less a support module (2) placed against one side of said test stand module and having means (30) for circulating a heat transfer liquid in the test cell (4) of said module, for the regulation of thermal parameters during the operation of the equipment, and means (31) for cooling the heat transfer liquid. 2. Installation according to claim 1, wherein the combination of each test bench module (1) with its respective technical support means (2) forms a modular assembly suitable for installation in outdoor environment. 3. Installation according to claim 1 or 2, wherein each support module (2) is placed above the test bench module (1) with which it is associated. 4. Installation according to any one of the preceding claims, wherein the test bench modules and technical support (1, 2) are transportable individually. 5. Installation according to any one of the preceding claims, comprising a roof element (28) for partially masking a plurality of chimneys (25-27) protruding on top of a technical support module (2). An installation according to any one of the preceding claims, wherein each test bench module has a space adjacent to the test cell (4), which forms a control zone (5) receiving members (18, 19) control and supervision tests an operator. 7. Installation according to any one of the preceding claims, comprising several juxtaposed test bench modules (1), associated with respective technical support means (2). 8. Installation according to claim 7, wherein each set formed by a test bench module (1) associated with its technical support means (2) has two lateral faces unobstructed to allow to form at least a portion of the installation in the form of a row of several sets juxtaposed along said lateral faces. 9. Installation according to claim 8, wherein each assembly formed by a test bench module (1) associated with its technical support means (2) further has a clear rear face to allow a two-dimensional arrangement of said sets in form. at least two rows of several sets, juxtaposed along the rear faces of said sets. 10. Installation according to any one of claims 7 to 9, wherein each test bench module (1) has a space adjacent to the test cell, which forms a control zone (5) receiving organs ( 18, 19) and in which lateral walls of juxtaposed test-bed modules are open to the right of their control zones, so that said control zones are juxtaposed and form a control room shared by several test cells (4). 11. Installation according to any one of the preceding claims, further comprising at least one prefabricated auxiliary module (120), on one level with the test bench module <B> (1), </ B> providing premises for users of the installation. 12. Installation according to any one of the preceding claims, wherein the means included in the technical support module for circulating the heat transfer liquid in the test cell comprises an intake pipe (34) of a reservoir of expansion (32) to the test cell and return line (35) of the test cell to the cooling means (31) of the technical support module, and wherein the test cell (4) contains means (13) for distributing the coolant from the inlet pipe to different circuits of the simulation and liquid collection means from the different circuits to the return pipe. 13. Installation according to any one of the preceding claims, wherein the technical support module (2) associated with a test bench module (1) comprises means (22) for powering equipment located in said test bench and technical support modules. 14. Installation according to any one of the preceding claims, wherein fire detection means (100 04) are placed at least in the test cell (4) of the test bench module (1), and the associated technical support module (2) comprises means (24, 105, 106) for discharging an inert gas into the test cell in response to a signal from the fire detection means. 15. Installation according to claim 14, wherein fire detection means (104) are further placed in the technical support module (2), the inert gas being also poured into said technical support module in case of detection. . 16. Installation according to any one of the preceding claims, wherein the technical support module (2) associated with a test bench module (1) comprises a compressed air tank (91) for supplying pneumatic circuits ( 92, 93) located at least in the test cell (4). 17. Installation according to any one of the preceding claims, wherein the technical support module (2) associated with a test bench module (1) comprises means (20) for blowing air into the volume of the test cell (4), and means (76) for extracting air out of the volume of the test cell, the extracted air being expelled in the upper part of said technical support module. 18. Installation according to any one of the preceding claims, wherein the equipment under test comprises a heat engine (M). 19. Installation according to claim 18, wherein the technical support module (2) associated with a test bench module (1) comprises means (82) for extracting and cooling the exhaust gas of the engine. (M). 20. Installation according to claim 19, wherein the extraction and exhaust gas cooling means included in the technical support module (2) comprise a silencer (85) receiving the exhaust gas from the cell of test (4), and a mixing chamber (84) containing the silencer and having an air inlet from the volume of the test cell, and wherein means (87) are provided for depressurizing the mixing chamber and expelling the mixture of air and exhaust gas having passed through the silencer at the top of said technical support module. 21. Installation according to any one of claims 18 to 20, wherein each technical support module (2) associated with test bench module (1) further comprises means (21) for delivering to the cell of temperature-controlled combustion air test. 22. Installation according to any one of claims 18 to 21, wherein the simulation means located in the test cell (4) comprises a load simulation machine 0) to be coupled to the tested equipment (M). 23. Installation according to claim 22, wherein a marble (6) is placed in the test cell (4) to receive a support (7) of the equipment tested, at least one heat exchanger (47-49) connected means for circulating a coolant, and the load simulator (10). 24. Installation according to claim 23, wherein said support of the equipment under test comprises a carriage (7) for transporting the equipment. 25. Prefabricated module, arranged to form a test bench module (1) of an installation according to any one of claims 1 to 24. 26. Prefabricated module, arranged to form a technical support module (2) of an installation according to any one of claims 1 to 24.