JP5824703B2 - Engine test equipment - Google Patents

Description

  The present invention relates to an engine test apparatus for measuring engine performance.

  To measure the performance of an automobile engine, etc. under various temperature conditions, to drive the engine housed in a test chamber maintained at a predetermined temperature and measure the engine performance while applying a predetermined load to the engine The engine test device is used.

  In addition, when the engine is driven in the test chamber, the engine test apparatus discharges exhaust gas to the outside of the test chamber so that the high-temperature waste heat contained in the engine exhaust remains in the test chamber and the temperature condition in the test chamber does not fluctuate. In addition, there are some that correspond to the shape and size of the engine, the position and orientation of the exhaust pipe, etc., which differ depending on the engine displacement.

  As such an engine test apparatus, an exhaust pipe led outside the test chamber is attached to the engine, and the exhaust gas exhausted from the engine is exhausted outside the test chamber during the engine test. An insertion hole through which the tube can be inserted; a panel member attached to the outer peripheral surface of the wall portion via a horizontal slide rail; and a cover panel attached to the outer peripheral surface of the panel member via a vertical slide rail. Those are known (for example, see Patent Document 1).

  In this engine test apparatus, an exhaust pipe is inserted into the opening of the wall of the test chamber, the hole of the panel member, and the insertion hole of the cover panel, and the panel member is slid on the horizontal slide rail to the wall. The insertion hole is configured to be slidable vertically and horizontally in a plane by moving the cover panel member relatively on the vertical slide rail and moving the cover panel member relative to the panel member.

JP 2006-78311 A.

  However, in the engine test apparatus as described above, a panel member and a cover panel are arranged on the outside of the wall portion of the test chamber, and a horizontal slide rail for sliding the panel member and a vertical slide rail for sliding the cover panel are provided. There is a problem that the structure of the test chamber is complicated and the manufacturing load and assembly load of the test chamber tend to increase, and the test chamber is enlarged and it is difficult to secure the installation space for the test chamber. .

  Therefore, a technical problem to be solved in order to install the test chamber in a space-saving manner while simply providing an insertion hole that can be repositioned according to the insertion position of the exhaust pipe of the engine in the wall portion of the test chamber arises. Therefore, an object of the present invention is to solve this problem.

The present invention is proposed to achieve the above object, and the invention according to claim 1 is an engine test apparatus for measuring engine performance in a test chamber, wherein the test chamber is connected to the engine. An insertion hole panel having an insertion hole through which an exhaust pipe that guides the exhaust of the engine to the outside of the test chamber is inserted, and a non-perforated plate-like spacer panel that is detachably attached to the outer periphery of the insertion hole panel. A panel wall portion embedded in at least one wall portion,
Provided is an engine test apparatus capable of changing the position of the insertion hole in the panel wall portion according to the combination of the insertion hole panel and the spacer panel.

  According to this configuration, the insertion hole panel is positioned so that the insertion hole and the insertion position of the exhaust pipe are aligned, and the spacer panel is attached around the insertion hole panel to form the panel wall portion. Since the insertion hole can be rearranged by a combination of the hole panel and the spacer panel, a test chamber having an insertion hole that can be rearranged in the panel wall portion can be easily provided.

  In addition, the panel wall part is embedded in the wall of the test room, so that the test room can be installed in a small space without providing a complicated mechanism for adjusting the arrangement of the insertion holes in the panel wall part. it can.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the exhaust pipe is provided with an engine test device that is inserted into the insertion hole via a flame-retardant heat insulating material.

  According to this configuration, the flame-retardant heat insulating material blocks the space between the exhaust pipe and the insertion hole without burning out or deforming due to the waste heat of the exhaust gas, thereby maintaining the airtightness between the exhaust pipe and the insertion hole. Therefore, it is possible to accurately measure the performance of the engine while maintaining the temperature condition constant.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the present invention, the insertion hole panel provides an engine test apparatus configured of a flame retardant material.

  According to this configuration, the insertion hole panel close to the exhaust pipe is prevented from being burned out and deformed by the waste heat of the exhaust gas, thereby improving the durability of the test chamber and measuring the performance of the engine over a long period of time. be able to.

  According to a fourth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the insertion hole panel includes a pair of panel pieces each having a semicircular cutout. An engine test device is provided.

  According to this configuration, the exhaust pipe is inserted into the insertion hole simply by combining a pair of panel pieces so that the exhaust pipe is sandwiched between the cutouts of the panel pieces. It is possible to reduce the labor of the insertion work to be inserted.

  According to a fifth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, in addition to the configuration according to any one of the first to fourth aspects, an engine test in which two insertion hole panels are arranged side by side in the width direction of the panel wall portion. Providing the device.

  According to this configuration, even when two exhaust pipes are attached to the engine, the gap between the exhaust pipe and the insertion hole becomes excessive by inserting each exhaust pipe into a separate insertion hole. Since the temperature in the test chamber is easily maintained by suppressing the expansion, the performance of the engine having a plurality of exhaust pipes can be accurately measured in a state where the temperature condition is maintained constant.

  According to a sixth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the panel wall portion provides an engine test apparatus that is disposed on each adjacent wall portion.

  According to this configuration, when the direction of the exhaust pipe changes depending on the driving method of the automobile by providing the panel wall portions on the adjacent wall portions, for example, an FR (Front engine Rear drive) engine and an FF (Front engine Front front) engine. The engine can be positioned so that the exhaust pipe extends toward the insertion hole in one of the adjacent wall portions even if the direction of the exhaust pipe differs from that of the drive engine by approximately 90 degrees. Therefore, it becomes easy to adjust the direction of the engine with respect to the wall portion, and it is possible to quickly cope with performance measurement of various engines having different exhaust pipe directions.

  According to a seventh aspect of the invention, in addition to the configuration of the first aspect of the invention, the wall portion having the panel wall portion measures the performance of the engine and the engine outside the test chamber. An engine test apparatus having a power shaft insertion hole through which a power shaft for connecting to a measuring device to be inserted is provided.

  According to this configuration, since the measuring device for measuring the performance of the engine can be arranged outside the test chamber, the test chamber can be installed in a space-saving manner that can accommodate only the engine, and the measuring device extends from a high temperature to a low temperature in the test chamber. In order to avoid exposure to a wide range of test temperatures, there is no need to prepare special and expensive measuring equipment for various temperature conditions such as low temperature specifications and high temperature specifications, and the cost required for measuring engine performance can be reduced. Can do.

  According to the first aspect of the present invention, since the insertion holes can be repositioned according to the insertion positions of the exhaust pipes of various engines, a test chamber having an insertion hole that can be repositioned within the panel wall portion is simply provided. In addition, the test room can be installed in a small space.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the heat insulating material maintains the airtightness between the exhaust pipe and the insertion hole. Can be measured accurately.

  In addition to the effect of the invention of claim 1 or 2, the invention described in claim 3 keeps the exhaust pipe supported by the exhaust hole panel without being burned out or deformed by the waste heat of the engine. The engine performance can be continuously measured in a state maintained at

  In the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the exhaust pipe is inserted into the insertion hole only by combining the pair of panel pieces so as to sandwich the exhaust pipe. Therefore, it is possible to reduce the labor of inserting the exhaust pipe through the insertion hole when the test chamber is assembled.

  In addition to the effect of the invention according to any one of claims 1 to 4, the invention described in claim 5 suppresses an excessive expansion of the gap between the exhaust pipe and the insertion hole, thereby reducing the temperature in the test chamber. Therefore, it is possible to accurately measure the performance of an engine having a plurality of exhaust pipes while maintaining a constant temperature condition.

  According to the sixth aspect of the invention, in addition to the effect of the first aspect of the invention, the panel wall portion is provided on each adjacent wall portion, thereby adjusting the direction of the engine relative to the wall portion. Therefore, the engine can be easily installed, and the performance of various engines with different exhaust pipe orientations can be measured quickly.

  The invention according to claim 7 saves space in the test chamber because the measuring device for measuring the performance of the engine can be arranged outside the test chamber in addition to the effect of the invention according to any one of claims 1 to 6. It is not necessary to prepare a special and expensive instrument corresponding to various temperature conditions such as a low temperature specification and a high temperature specification, and the cost required for engine performance measurement can be reduced.

1 is a partially cutaway schematic view showing an engine test apparatus showing an embodiment of the present invention. The figure which shows the front wall part of a test chamber. The figure which shows the state which removed the panel wall part from the front wall part shown in FIG. The figure which shows the panel wall part in FIG. FIG. 5 is an enlarged sectional view taken along line AA in FIG. 4. The figure which shows the state which penetrated the exhaust pipe to the insertion hole panel. The figure which shows the obstruction | occlusion member applied to the front wall part in FIG. The figure which shows the state which removed the panel wall part from the left side wall part of a test chamber. The figure which shows the panel wall part attached to the left side wall part of FIG. The figure which shows the state which penetrated the casing which includes a power shaft in the power shaft insertion hole of a left side wall part.

In order to achieve the purpose of simply providing a through hole that can be repositioned according to the insertion position of the exhaust pipe of the engine in the wall portion of the test chamber and installing the test chamber in a space-saving manner, An engine test apparatus for measuring the performance of an engine with an insertion hole panel having an insertion hole for inserting an exhaust pipe connected to the engine and guiding engine exhaust to the outside of the test chamber, and an outer periphery of the insertion hole panel A non-perforated plate-like spacer panel that is detachably attached to the panel, and includes a panel wall portion embedded in at least one wall portion, and the insertion hole is formed in accordance with the combination of the insertion hole panel and the spacer panel. Realized by being able to change the arrangement within the panel wall.

  Hereinafter, a low temperature test apparatus 1 as an engine test apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1, the low temperature test apparatus 1 includes a low temperature test chamber 2 as a test chamber for storing the engine E, and a machine room 3 for storing the low temperature test chamber 2. The machine room 3 is provided with a dynamo 4 as a measuring device that measures the performance of the engine E while applying a simulated load to the engine E, and a measuring instrument 5 that measures the test results in the low temperature test room 2. The machine room 3 is kept in a normal temperature and low humidity state by an air conditioner (not shown) so that condensation does not occur around the low temperature test room 2.

  An air conditioner 6 is placed on the top surface 3 a of the machine room 3. The low temperature test chamber 2 and the air conditioner 6 are connected via a duct 7, and the temperature of the air sent to the low temperature test chamber 2 is adjusted by the air conditioner 6 so that the inside of the low temperature test chamber 2 has a predetermined temperature (for example, −30 ° C. to 5 ° C.).

  The low temperature test chamber 2 is formed in a substantially rectangular parallelepiped shape, and includes a front wall portion 10, a left side wall portion 20, a right side wall portion 30, a back wall portion 40, It is comprised by the top surface wall part 50 mounted above, and the bottom face part which is laid under these and which is not shown in figure. In the low temperature test chamber 2, a detachable door (not shown) is attached to the right side wall portion 23, and the room can enter the low temperature test chamber 2 from the detachable door.

The engine E is placed on an engine installation table (not shown) in the low temperature test chamber 2. The engine E is connected to an exhaust pipe 8 for guiding the exhaust of the engine E from the low temperature test chamber 2 into the machine chamber 3 and a dynamo 4 installed outside the low temperature test chamber 2 and accommodated in a casing 9 (not shown). A power shaft is attached.
The exhaust pipe 8 and the power shaft 9 extend so that their longitudinal directions are orthogonal to each other, but the longitudinal directions of the exhaust pipe 8 and the power shaft 9 are parallel to each other depending on the type and driving method of the engine E. As described above, the exhaust pipe 8 and the power shaft 9 may extend.

  As shown in FIG. 2, the front wall portion 10 is formed in a rectangular shape having a height of 2000 mm and a width dimension of 3000 mm, and a panel wall portion 100 described later and a duct hole 11 a to which an end of the duct 7 is attached are formed. The two duct hole panels 11 and 11 and the non-perforated plate-like front flat panel 12 are configured. In addition, the code | symbol 13 in FIG. 2 is a handle which an operator hold | grips when embedding each panel and carrying each panel. By providing the handle 13 in the duct hole panel 11 and the front flat panel 12, the conveyance of the duct hole panel 11 and the front flat panel 12 and the assembly of the front wall part 10 can be performed simply.

  As shown in FIG. 3, the adjacent duct hole panel 11 and front flat panel 12 are connected by connecting means 14 provided between the panels, with a panel wall part installation opening region r1 to which the panel wall part 100 is attached. ing.

  The connecting means 14 includes a hooking rod 14a embedded in the end portion of one of the adjacent panels, and a hook-shaped locking member 14b embedded in the end portion of the other panel and provided rotatably. It has. By locking the locking tool 14b to the hooking rod 14a, the adjacent duct hole panel 11 and front flat panel 12 can be easily connected. The duct hole panel 11 and the front flat panel 12 are also connected to the panels constituting the left side wall portion 20, the right side wall portion 30, and the top wall portion 50 by the same connecting means 14.

  The panel wall part installation opening region r1 has an opening area corresponding to the shape, size, position, direction, and the like of the engine.

  When the panel wall portion 100 is mounted in the panel wall portion installation opening region r1 of the front wall portion 10, between the panel wall portion 100 and the front flat panel panel 12 around the panel wall portion installation region r1, A packing (not shown) is interposed. Thereby, the airtightness between the panel wall part 100 and the front flat panel 12 is maintained.

  Next, the panel wall part 100 attached in the panel wall part installation area | region r1 of the front wall part 10 is demonstrated based on FIG. 4 thru | or FIG.

  The panel wall portion 100 is formed in a rectangular shape having a height of 600 mm and a width dimension of 1900 mm. As shown in FIG. 4, the panel wall portion 100 includes two insertion hole panels 110 and 110 each having a circular insertion hole 110a. A non-perforated plate-like spacer panel 120 is detachably mounted around the hole panel 110 in the height direction H and the width direction W.

  The spacer panel 120 is formed in a rectangular shape. The height and width dimensions of the spacer panel 120 and the number of the spacer panels 120 are adjusted so as to be suitable for the arrangement change of the insertion hole panel 110.

  As shown in FIG. 5, the lower end surface 110 b of the insertion hole panel 110 is formed in a step shape in the thickness direction D, and the upper end surface 120 a of the spacer panel 120 is in the thickness direction D according to the lower end surface 110 b of the insertion hole panel 110. The insertion hole panel 110 and the spacer panel adjacent to each other in the height direction H are sandwiched between the lower end surface 110b of the insertion hole panel 110 and the upper end surface 120a of the spacer panel 120. Airtightness between 120 is maintained. A similar configuration is adopted between the spacer panels 120 and 120 adjacent to each other in the height direction H.

  As long as the insertion hole panel 110 and the spacer panel 120 can be detachably attached to each other, the specific attachment mode of the insertion hole panel 110 and the spacer panel 120 may be any, for example, Even if the tenon formed on the other panel is engaged with the dovetail groove formed on the panel, a connecting means for connecting the insertion hole panel 110 and the spacer panel 120 may be separately provided.

The insertion hole panel 110 is made of a flame retardant material. Specifically, the lower end surface 110b and the insertion hole inner peripheral surface 110c of the insertion hole panel 110 are heat-insulating calcium silicate plates having a thickness of 8 mm, and the inside of the insertion hole panel 110 is alumina silica having heat insulation properties. The system felt is filled.
Thereby, since the through-hole panel 110 is suppressed from being burned out and deformed by waste heat of exhaust gas, durability of the low temperature test chamber 2 is improved.

The spacer panel 120 is a calcium silicate plate having an upper end surface 120a having a thickness of 8 mm. The spacer panel 120 is filled with urethane foam.
Since the lower end surface 110b of the insertion hole panel 110 and the upper end surface 120a of the spacer panel 120 are made of a heat-insulating calcium silicate plate, the heat insulation between the insertion hole panel 110 and the spacer panel 120 is maintained. .

  Further, since the two insertion hole panels 110 and 110 are arranged in parallel in the width direction W of the panel wall portion 100, each of the two exhaust pipes 8 is inserted through the panel wall portion 100. The exhaust pipe 8 is inserted into the respective insertion holes 110a, and the gap between the exhaust pipe 8 and the insertion hole 110a is prevented from excessively expanding.

As shown in FIG. 6, the exhaust pipe 8 is inserted into the insertion hole 110 a through the flame-retardant heat insulating material 140.
Thereby, the flame-retardant heat insulating material 140 closes the space between the exhaust pipe 8 and the insertion hole 110a without being burned out and deformed by the waste heat of the exhaust gas. Is retained.

The insertion hole panel 110 includes a pair of panel pieces 111 and 111 each having a notch 111a having a semicircular cross section. Specifically, the insertion hole panel 110 is configured by combining a pair of panel pieces 111 and 111 so that the notches 111a are opposed to each other to form the insertion hole 110a.
Thereby, since the exhaust pipe 8 is inserted into the insertion hole 110a only by combining the pair of panel pieces 111 and 111 so as to sandwich the exhaust pipe 8, the labor of insertion work for inserting the exhaust pipe 8 into the insertion hole 110a is reduced. Can be reduced.

  When the exhaust pipe 8 is not inserted through the front wall portion 10, specifically, when the exhaust pipe 8 is inserted through the left side wall portion 20 as will be described later, it is within the panel wall portion installation opening region r1. 7 is attached, the temperature environment in the low temperature test chamber 2 can be maintained.

  Next, the left side wall portion 20 that is erected next to the front wall portion 10 and through which the power shaft 9 that connects the engine E and the dynamo 4 is inserted will be described with reference to FIG. 8.

  The left side wall part 20 has a panel wall part installation opening region r2 for attaching a panel wall part 200 to be described later, a power shaft insertion hole panel 21 in which an arcuate cutout 21a is formed, and a non-plate-like side plate. And a panel 22. In addition, the code | symbol 23 in FIG. 2 is a handle which an operator hold | grips when embedding each panel and carrying each panel. By providing the handle 23 on the side flat panel 22, the side flat panel 22 can be transported and the left side wall 20 can be easily assembled.

  Adjacent power shaft insertion hole panel 21 and side flat panel 22 are connected by connecting means 24.

  The connecting means 24 includes a hooking rod 24a embedded in an end portion of one of the adjacent panels, and a hook-shaped locking member 24b embedded in the end portion of the other panel and rotatably provided. It has. By locking the locking tool 24b to the hooking rod 24a, the adjacent power shaft insertion hole panel 21 and the side flat panel 22 can be easily connected. The power shaft insertion hole panel 21 and the side flat panel 22 are connected to the panels constituting the back wall 40 and the top wall 50 by the same connecting means 24.

  Next, a characteristic configuration of the panel wall part 200 press-fitted into the panel wall part installation opening region r2 of the left side wall part 20 will be described with reference to FIGS. 9 and 10. In addition, about the structure which overlaps with the panel wall part 100 of the front wall part 10 among the structures of the panel wall part 200 of the left side wall part 20, the code | symbol of the 200 series is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 9, the panel wall portion 200 includes two insertion hole panels 210 and 210 each having a circular insertion hole 210a through which the exhaust pipe 8 can be inserted, a non-porous plate-like spacer panel 220, and an arc shape. And a power shaft insertion hole panel 260 having a notch 260a.

  Thereby, since the exhaust pipe 8 can be inserted into the front wall portion 10 and the left side wall portion 20 adjacent to each other, the insertion position of the exhaust pipe 8 can be appropriately changed according to the direction of the exhaust pipe 8.

  As shown in FIG. 10, the power shaft insertion hole panel 210 and the power shaft insertion hole panel 260 of the left side wall portion 20 form a power shaft insertion hole 200 a to which a casing 9 for inserting a power shaft (not shown) is attached. Specifically, the notch 21a of the left side wall portion 20 and the notch 260a of the panel wall portion 200 are opposed to each other to form a power shaft insertion hole 20a through which the casing 9 containing the power shaft is inserted.

  Thereby, since the measuring device 7 can be disposed outside the low temperature test chamber 2, the low temperature test chamber 2 can be installed in a space-saving manner that can accommodate only the engine E. Moreover, it is avoided that the measuring device 7 is exposed to the low temperature in the low temperature test chamber 2.

  As described above, in the low-temperature test apparatus 1 according to the present invention, the insertion hole panel 110 is positioned so that the insertion hole 110a and the insertion position of the exhaust pipe 8 coincide with each other, and the spacer panel 120 is positioned around the insertion hole panel 110. When the panel wall portion 100 is attached, the insertion hole 110a can be rearranged by a combination of the insertion hole panel 110 and the spacer panel 120. Therefore, the insertion hole 110a that can be rearranged within the panel wall portion 100 is provided. Can be easily provided.

  Further, since the panel wall portion 110 is embedded in the front side wall 10 of the low temperature test chamber 2, it is not necessary to separately provide a mechanism for adjusting the arrangement of the insertion hole 110 a in the front side wall 10. It can be installed in a small space.

  Moreover, since the heat insulating material 140 maintains the airtightness between the exhaust pipe 8 and the insertion hole 110a, the performance of the engine in a low temperature environment can be accurately measured, and the insertion hole panel 110 made of a flame-retardant material is used. However, the exhaust pipe 8 continues to be supported without being burned out and deformed by the waste heat of the engine E, so that the performance of the engine can be continuously measured while the temperature condition is kept constant.

  Further, since the exhaust pipe 8 is inserted into the insertion hole 110a simply by combining the pair of panel pieces 111 and 111 so as to sandwich the exhaust pipe 8, the exhaust pipe 8 at the time of assembly of the low temperature test chamber 2 is inserted into the insertion hole 110a. It is possible to reduce the labor of the insertion work to be inserted.

  Further, since the exhaust pipe 8 can be inserted into the front wall portion 10 and the left side wall portion 20 adjacent to each other, the insertion position of the exhaust pipe 8 can be changed according to the orientation of the exhaust pipe 8, so the direction of the engine E can be changed. The engine E can be easily installed and the engine E can be easily installed, and the performance of various engines having different exhaust pipe 8 mounting positions can be measured. Since it can be arranged, the low-temperature test chamber 2 can be installed in a small space, and it is not necessary to prepare a special and expensive device corresponding to the low-temperature test, and the cost required for measuring the performance of the engine can be reduced.

  In the present embodiment, the engine test apparatus that measures the performance of the engine while keeping the test chamber at a low temperature of −30 ° C. to 5 ° C. has been described. However, the measured temperature in the test chamber is not limited to the above range. The temperature may be outside the range.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

DESCRIPTION OF SYMBOLS 1 ... Low temperature test apparatus 2 ... Low temperature test chamber 3 ... Machine room 4 ... Dynamo 5 ... Measuring device 6 ... Air conditioner 7 ... Duct 8 ... Exhaust pipe 9 Casing 10 ... Front wall 11 ... Duct hole panel 12 ... Front flat panel 20 ... Left side wall 20a ... Power shaft insertion hole 21 ... Power shaft insertion hole panel 22 .. Side flat panel 30 ... right side wall 40 ... back wall 50 ... top wall 100 ... panel wall 110 (of front wall) ... insertion hole panel 110a ... Insertion hole 120 ... Spacer panel 200 ... Panel wall part 210 (on the left side wall) ... Insertion hole panel 210a ... Insertion hole 220 ... Spacer panel 260 ... Power shaft insertion hole panel

Claims (7)

An engine test device for measuring engine performance in a test chamber,
The test chamber includes an insertion hole panel having an insertion hole through which an exhaust pipe connected to the engine and guides exhaust of the engine to the outside of the test chamber is inserted, and a non-perforated plate removably attached to the outer periphery of the insertion hole panel And a panel wall portion embedded in at least one wall portion,
An engine test apparatus characterized in that the insertion hole can be rearranged within the panel wall portion in accordance with the combination of the insertion hole panel and the spacer panel.   The engine test apparatus according to claim 1, wherein the exhaust pipe is inserted into the insertion hole via a flame-retardant heat insulating material.   The engine test apparatus according to claim 1, wherein the insertion hole panel is made of a flame retardant material.   The engine test apparatus according to any one of claims 1 to 3, wherein the insertion hole panel includes a pair of panel pieces each having a semicircular cutout in cross section.   5. The engine test apparatus according to claim 1, wherein two insertion hole panels are arranged side by side in the width direction of the panel wall portion. 6.   The engine test apparatus according to any one of claims 1 to 5, wherein the panel wall portions are respectively disposed on adjacent wall portions.   The wall portion having the panel wall portion includes a power shaft insertion hole through which a power shaft connecting the engine and a measuring device that measures the performance of the engine outside the test chamber is inserted. The engine test apparatus according to any one of 1 to 6.

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