JPH0416194Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Industrial application field This invention uses 4WD vehicle testing equipment to
This invention relates to a vehicle testing device that is capable of testing (FF, FR).

B. Overview of the invention This invention is a vehicle testing device compatible with 4WD and 2WD, in which first and second dynamometers are provided, and first and second rollers are provided in the axial direction with the first dynamometer in between. , both rollers and the output shaft of the first dynamometer are connected via first and second clutches, a third roller is connected to the output shaft of the second dynamometer, and the first roller is connected to the output shaft of the first dynamometer. By placing the test vehicle on the second and third rollers, a part of the function of the 4WD vehicle test equipment was changed, making it possible to test two 2WD vehicles (FF vehicle and FR vehicle) at the same time. It is something.

C. PRIOR TECHNOLOGY A vehicle testing device (hereinafter referred to as a chassis dynamometer) is used to test the dynamic driving performance of automobiles indoors, and uses rotating rollers as an infinite flat road instead of a road. A dynamic test is performed by placing a wheel on the vehicle and running it. In this case, the same load (running resistance) as when actually running on a road is applied to the roller shaft, and various measurements are performed under conditions as close as possible to actual running.

Conventionally, a 4WD chassis dynamometer is composed of a first chassis dynamometer 21 and a second chassis dynamometer 22, as shown in FIG.
A second roller 21b for the rear wheels of the vehicle is attached to a fixed base, and a second dynamometer 22a constituting the second chassis dynamometer 22 and a third roller 22b for the front wheels of the vehicle are attached to a fixed base. is the movable base 22
c, attached to 22d. Movable stand 22c, 2
2d is several rails 22 arranged at the bottom.
e, 22f. 23 and 24 are flywheels, and these flywheels are connected to the first and second dynamometers 21a and 22a.
The output shafts 25, 26 of the dynamometers 21a, 22a connect the rollers 21b, 22b and the second and third rollers 21b, 22b. 27 and 28 are brakes, 29 is a main operation panel, 30 is a cooling fan, 31a and 31b are soundproof walls, and 32 is a building.

With the 4WD chassis dynamometer configured as described above, when testing a 4WD vehicle, the dynamometer 22a of the second chassis dynamometer 22 and the roller 2 are connected in accordance with the wheel base of the vehicle.
After moving the dynamometer 22b and fixing the dynamometer 22a and the roller 22b at predetermined positions, both vehicles of the vehicle are placed on the roller, and then the test is started. Also,
FF using this 4WD chassis dynamometer
When testing a 2WD car or FR car, use either roller 21b or roller 22b, depending on whether the test vehicle is a FF car or an FR car, and lock the other roller so that it is not used. ing.

D Problems to be solved by the invention When testing a vehicle using the above-mentioned 4WD chassis dynamometer, the testable range is
One 4WD vehicle and one 2WD vehicle, either FF or FR. In particular, when testing 2WD vehicles, one of the dynamometers and rollers is not used, which poses the problem of poor equipment usage efficiency.

This invention was made in view of the above circumstances, and the purpose is to provide a chassis dynamometer that can test two 2WD vehicles at the same time and improve the efficiency of equipment usage.

E. Means for Solving the Problem This invention provides a first and a second dynamometer, sends out a pair of output shafts in the axial direction of the dynamometer with the first dynamometer in between, and a pair of output shafts, respectively. First and second rollers are provided, and both rollers are connected to a pair of output shafts of the first dynamometer via first and second clutches, respectively. connects the third roller, and connects the first roller and the second and third rollers.
The vehicle under test is placed on the rollers of the roller.

F Effect When testing FF and FR vehicles at the same time among 2WD vehicles, place the FF vehicle on the second and third rollers,
Place the FR vehicle on the first roller and release the second clutch. As a result, the driving force of the first dynamometer is not transmitted to the second roller, but the third roller is driven by the driving force of the second dynamometer, and the FF vehicle is tested. If two FWD vehicles are to be tested at the same time, the FWD vehicle is placed on the first roller by backing it up from the vehicle entrance. At this time, the second clutch is disengaged in the same manner as described above. Furthermore, if two FR vehicles are to be tested at the same time, the FR vehicles are placed on the second and third rollers by backing them up from the vehicle entrance. At this time, the second clutch is also disengaged in the same manner as described above.

By using the methods described above, it is possible to test two FF cars and FR cars, FF cars and FF cars, and FR cars and FR cars at the same time.

G. Embodiment An embodiment of this invention will be described below with reference to the drawings, in which the same parts as in FIG. 2 are denoted by the same reference numerals.

In FIG. 1, the second clutch 14 is inserted into the output shaft 25 which connects the flywheel 23 which is connected to the dynamometer 21a of the first chassis dynamometer 21 and the roller 21b. 14, the driving force of the dynamometer 21a is transmitted to the second roller 21b or not transmitted. Reference numeral 12 denotes a first roller disposed coaxially with the second roller 21b across the dynamometer 21a of the first chassis dynamometer 21, and the first roller 12 and the dynamometer 21a They are connected by a dynamometer 13. A first clutch 11 is inserted into the output shaft 13, and the driving force of the dynamometer 21a is transmitted to the first roller 12 by turning on and off the first clutch 11. 15 is a cooling fan, 16 is a sub-operation panel, 3
1c is a soundproof wall.

In the embodiment configured as above,
When testing 2WD FF and FR vehicles,
FF and FR vehicles enter through vehicle entrances and exits (indicated by arrows), respectively. At this time, after the second chassis dynamometer 22 is moved in accordance with the wheel base of the FF vehicle, the movable bases 22c and 22d of the dynamometer 22a and the third roller 22b are fixed. At the same time, the second clutch 14 is disengaged and the driving force of the dynamometer 21a is transferred to the second roller 21b.
prevent it from being transmitted to After making such preparations, the FF vehicle enters through the vehicle entrance and stops at a position where the front and rear wheels are placed on the second and third rollers 21b and 22b.

On the other hand, after connecting the first clutch 11 inserted between the dynamometer 21a of the first chassis dynamometer 21 and the output shaft 13 of the first roller 12, the FR vehicle is allowed to enter from the vehicle entrance. , the FR vehicle is stopped at a position where the rear wheels are placed on the first rollers 12.

After the test preparations as described above are completed, the FF vehicle is tested by operating the main operation panel 29 to operate the dynamometer 22a of the second chassis dynamometer 22. Further, the test for the FR vehicle is performed by operating the dynamometer 21a of the first chassis dynamometer 21 by operating the sub-operation panel 16. In addition, in the FF vehicle test, since the second clutch 14 is disengaged, the driving force of the dynamometer 21a is not transmitted to the second roller 21b.
It will not affect the car test. Furthermore, since the first clutch 11 is in the connected state in the test of the FR vehicle, the driving force of the dynamometer 21a is transmitted to the first roller 12, allowing the test of the FR vehicle. With this configuration, two 2WD (FF, FR) vehicles can be tested at the same time, making equipment usage extremely efficient.

The above example is a case where two FF and FR vehicles are tested at the same time, but in order to test two FF vehicles, the first
This is possible if the front-wheel drive vehicle is placed on the rollers 12 by entering it from the vehicle entrance using a bag. In addition, in order to test two FR vehicles, the second roller 2
1b and the third roller 22b, the FR vehicle can be placed on the roller 1b and the third roller 22b by entering the vehicle through the vehicle entrance and exit by backing up. In addition, when testing 4WD vehicles, the first
The second clutch 11 may be disengaged and the second clutch 14 may be engaged.

H. Effects of the invention As described above, according to this invention, first and second rollers are provided in the axial direction of the first dynamometer, and both rollers and the output shaft of the first dynamometer are connected to each other. When connecting the first and second clutches, a third roller is provided on the output shaft of the second dynamometer, and the first and second clutches are connected to each other. By placing the test vehicle on each, one 4WD vehicle and two 2WD vehicles (FF and FR vehicles,
Since FF and FF vehicles and FR and FR vehicles can be tested independently, the efficiency of using vehicle testing equipment can be dramatically improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic structural explanatory diagram showing an embodiment of this invention, and FIG. 2 is a schematic structural explanatory diagram showing a conventional example. 11, 14...first and second clutches, 12...
...first roller, 13, 25, 26...output shaft,
21, 22...first and second chassis dynamometers, 21a, 22a...first and second dynamometers,
21b, 22b... second and third rollers.

Claims (1)

[Scope of utility model registration request] First and second dynamometers are provided, a pair of output shafts are sent out in the axial direction of the dynamometer with the first dynamometer in between, and a pair of first and second rollers are provided respectively. The roller and a pair of output shafts of the first dynamometer are connected via first and second clutches, respectively, a third roller is connected to the output shaft of the second dynamometer, and a third roller is connected to the output shaft of the second dynamometer. A vehicle testing device characterized in that a vehicle to be tested is placed on the roller and the second and third rollers.