JP2599381Y2 - Power train test equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power train test apparatus for a transmission of an automobile, and more particularly, it can be used for testing a front engine front wheel drive transmission and a front engine rear wheel drive transmission. It relates to a power train test device.

[0002]

2. Description of the Related Art Automobile power trains are clutches,
A general term for mechanical elements that transmit the output of the engine to the wheels, such as torque converters, manual and automatic transmissions, final reduction gears and differentials, viscous joints and axle shafts, and are important elements that affect the vehicle's kinetic performance and driving feeling. It is.

The transmissions for automobiles are roughly classified into manual transmissions and automatic transmissions in terms of operation method, front engine front wheel drive (hereinafter abbreviated as FF) and front engine rear wheel drive (in terms of drive system). In the following, it will be abbreviated as FR use) and four-wheel drive.

The present invention relates to the layout of a test apparatus for a manual transmission and an automatic transmission (hereinafter, simply referred to as a transmission including both) for FF and FR except for four-wheel drive.

FIGS. 3 and 4 are views showing a conventional power train test apparatus. FIG. 3 is an explanatory plan view of a FF transmission, and FIG. 4 is a plan view of an FR transmission during a test.

In FIG. 3, 1 is a driving motor, 2 is a constant speed machine, and 3 is a torque meter for an input shaft. Reference numeral 4 denotes a FF transmission, which is a test machine, which has a built-in differential gear and is called a transaxle, which directly drives the front drive wheels with this output shaft. 5 is a torque meter for the output shaft, 6 is a flywheel 7
, A power absorbing unit comprising an electric dynamometer 8, a second output shaft torque meter 9, a second power absorbing unit 10 comprising a flywheel 7 and an electric dynamometer 8, and an FF transmission 4. Is a drive shaft connecting the output shaft on one side to the torque meter 5 for the output shaft, and 12 is a drive shaft connecting the output shaft on the other side of the FF transmission 4 and the torque meter for the second output shaft. .

In FIG. 4, reference numeral 13 denotes a so-called transmission, which is an FR transmission as a test machine. 14 is an output shaft side torque meter of the FR transmission 13, 15 is a differential gear,
Reference numeral 16 denotes a propeller shaft connecting the output shaft of the FR transmission 13 and the output shaft side torque meter 14, 17 a drive shaft connecting the output shaft side torque meter 14 and the differential gear 15, and 18 and 19 reference differential gears. 15 is a drive shaft that connects between the two output shafts and the output shaft torque meters 5 and 9.

In general, the rotation speed of the engine is 6000 per minute.
Although it is about the rotation, the transmission is generally overdriven, and the output shaft of the FR transmission needs to be measured at about 8000 revolutions per minute. Therefore, if power is to be absorbed by the output shaft of the FR transmission, a high-speed and large-capacity power absorbing unit is required. Thus, the power train test device for the FF transmission can be used.

That is, the drive motor 1, the constant velocity machine 2, and the input shaft torque meter 3 are moved while the output shaft torque meters 5, 9 and the power absorbing units 6, 10 are kept as they are.
When moving these devices, an electric moving device using a feed screw or a hydraulic cylinder or an air levitation moving device is used, but the former requires a moving rail surface plate, turntable, hydraulic power source, etc. It is necessary to sufficiently manage the surface plate so that there are no steps, protrusions, and foreign substances such as dust, and a large amount of air is required. After the movement, they perform centering work and connect each device.

[0010]

When an attempt is made to test an FR transmission after testing an FF transmission, or to test an FF transmission after an FR transmission test, a driving motor is required. The test equipment on the input side, such as a constant velocity machine and a torque meter for the input shaft, must be moved. In order to move, not only the moving surface plate and turntable but also electric, hydraulic,
A moving device and a power source device using air pressure or the like are required, and after moving, centering work, connection work, and installation work are required, so that equipment costs are high and much work time is required.

[0011] Further, when the power absorbing portion composed of a flywheel and an electric dynamometer is arranged on a straight line, the length becomes long,
When a differential gear is used for testing the FR transmission, the length and the width in the direction perpendicular to the length are also increased. The installation area becomes large if a mobile device and its accompanying equipment such as a power source are included, and a large building is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power train test apparatus having a small installation area and capable of testing FF and FR transmissions without moving test equipment.

[0013]

Means for solving the above-mentioned problems in the present invention are to make the distance between the input and output shafts substantially equal to the distance between the input and output shafts of the FF transmission, A speed reducer having a speed reduction ratio substantially equal to the speed reduction ratio, an output shaft torque meter connected to and installed on an output shaft opposite to the input shaft of the speed reducer, and a power absorbing portion including an electric dynamometer and a flywheel; An input shaft torque meter and a drive motor, which are installed at a position facing the input shaft of the speed reducer at a distance capable of connecting a FR transmission via a propeller shaft, and an input shaft of the speed reducer. A second output shaft torque meter, which is installed at a position opposite to the output shaft on the same side and separated from the two output shafts of the FF transmission by a drive shaft, and a U-shape via a constant speed machine. And the axis of the output shaft of the speed reducer and the shaft The constituted by a second power absorption unit consisting of parallel installed electrical dynamometer and flywheel.

[0014]

In the transmission for an FF, an input shaft and a torque meter for the input shaft are connected by a propeller shaft, and an output shaft on the same side as the input shaft is connected to a second output shaft torque meter and the input shaft. The test can be performed by connecting the output shaft on the opposite side to the output shaft of the reduction gear by a drive shaft, respectively.

The FR transmission has its input shaft connected to the input shaft torque meter, its output shaft and the input shaft of the speed reducer connected by a propeller shaft, and the output shaft of the speed reducer and the second shaft.
The test can be performed by connecting the output shaft torque meter with a propeller shaft.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment shown in FIGS. 3 and 4 are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 1, which is an explanatory plan view of the FF transmission during a test, reference numeral 20 designates a distance between the input and output shafts substantially equal to a distance between the input and output shafts of the FF transmission 4, and a final reduction gear (for example, a differential gear). ) Is substantially equal to the reduction ratio (for example, 1:
A power absorber 6 comprising a flywheel 7 and an electric dynamometer 8 is connected via an output shaft torque meter 5 to an output shaft on the opposite side of the input shaft of the speed reducer 20. It is installed.

At a position facing the input shaft of the speed reducer 20, the FR transmission 1 is connected via a propeller shaft 25 shown in FIG.
The input shaft torque meter 3 and the drive motor 1 are installed at a distance that allows the connection of the input shaft 3.

Further, at a position facing an output shaft on the same side as the input shaft of the speed reducer 20, a distance between the two output shafts of the FF transmission 4 and the drive shafts 23 and 24 is set apart. 2 is provided with a torque meter 9 for an output shaft, and a second power absorbing portion 10 composed of a flywheel 7 and an electric dynamometer 8 is disposed in a U-shape via a constant velocity machine 21.
The axis of the power absorbing section 10 and the axis of the output shaft of the speed reducer 20 are installed in parallel.

In order to test the FF transmission 4 by the power train test apparatus in which the test equipment is installed as described above, as shown in FIG. 1, the input shaft and the input shaft torque meter 3 are connected to the propeller shaft. 22 and the output shaft on the same side as the input shaft is connected to the second output shaft torque meter and the drive shaft 2.
3 and an output shaft opposite to the input shaft is connected to an output shaft of the speed reducer 20 by a drive shaft 24.

When the drive motor 1 drives the FF transmission 4 as a test machine via the input shaft torque meter 3, one of the two output shafts of the FF transmission 4 becomes the output shaft of the speed reducer 20. And power absorber 6 via output shaft torque meter 5
And the other is a second output shaft torque meter 9 and a constant velocity machine 21.
Is connected to the second power absorbing unit 10 via the power supply, and various tests can be performed.

To test the FR transmission 13,
As shown in FIG. 2, the input shaft is connected to the input shaft torque meter 3, the output shaft thereof is connected to the input shaft of the speed reducer 20 by a propeller shaft 25, and the output shaft of the speed reducer 20 is connected to the output shaft. The second output shaft torque meter 9 is connected with a propeller shaft 26.

When the FR transmission 13 which is a test machine is driven by the driving motor 1 via the input shaft torque meter 3, the output shaft of the FR transmission 13 is decelerated by the speed reducer 20, and the speed is reduced. One of the two output shafts of the machine 20 is connected to the power absorbing unit 6 via the output shaft torque meter 5, and the other is connected to the second power absorbing unit 10 via the second output shaft torque meter 9 and the constant velocity machine 21. And various tests can be performed.

[0024]

[Effect of the Invention] The power train test apparatus according to the present invention
Since the output of the FR transmission 13 is biaxially output by the speed reducer 20 having a reduction ratio substantially equal to the final reduction ratio, the output can be shared with the FF transmission 4 of the power absorbing portion, and the drive motor 1 is connected to the input. Input-side test equipment including shaft torque meter 3, reducer 20 output shaft torque meter 5, power absorption unit 6
And any of the FF transmission 4 and the FR transmission 13 without moving the second output shaft torque meter 9, the constant velocity machine 21, and the output-side test equipment including the second power absorbing unit 10. The test can be supported.

Therefore, there is no need for an auxiliary equipment such as a moving surface plate for the test equipment and a moving device using electric, hydraulic and pneumatic pressures, and a power source device for the hydraulic and pneumatic pressures, thereby greatly reducing equipment costs. And eliminates the need for moving work, centering and setting work after moving, and eliminates the need to repeat high-precision installation, especially as vibration countermeasures for input-side test equipment that rotates at high speed. It saves time, is efficient, and allows you to prepare for a test in a short time.

Further, since the second power absorbing portion 10 is arranged in a U-shape using the constant velocity machine 21, the length is shorter than the conventional one in which the power absorbing portions 6 and 10 are arranged in a straight line. In addition, since the differential gear is omitted as a biaxial output by the speed reducer 20 having a reduction ratio substantially equal to the final reduction ratio, the length and the width in the direction perpendicular to the length are reduced, and there is no moving device and its auxiliary equipment. This has the effect of requiring a much smaller installation area, and requiring only a small test room or small building.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a FF transmission test according to an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention at the time of testing a transmission for FR.

FIG. 3 is an explanatory plan view at the time of testing a conventional FF transmission.

FIG. 4 is a plan view of a conventional FR transmission during a test.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electric motor for drive 3 ... Torque meter for input shaft 4 ... Transmission for front engine front wheel drive (FF) 5 ... Torque meter for output shaft 6 ... Power absorption unit 7 ... Flywheel 8 ... Electric dynamometer 9 ... Second Torque meter for output shaft 10 ... Second power absorbing part 13 ... Transmission for front engine rear wheel drive (FR) 20 ... Reducer 21 ... Constant speed machine 22,25,26 ... Propeller shaft 23,24 ... Drive shaft

Claims (1)

(57) [Scope of request for utility model registration] In a power train test apparatus for a transmission of an automobile, a speed reducer having an input / output shaft distance substantially equal to an input / output shaft distance of a front engine front wheel drive transmission and having a speed reduction ratio substantially equal to a final speed reduction ratio. An output shaft torque meter connected to an output shaft on the opposite side of the input shaft of the speed reducer, a power absorbing portion including an electric dynamometer and a flywheel, and a position facing the input shaft of the speed reducer. A torque meter for the input shaft and a drive motor arranged at a distance capable of connecting the front engine rear wheel drive transmission via a propeller shaft, and an output shaft on the same side as the input shaft of the speed reducer. A second output shaft torque meter, which is installed at a distance opposite to the two output shafts and the drive shaft of the front engine front wheel drive transmission at opposite positions, and a U-shape through a constant speed machine; Arrange the axis of the output shaft of the reducer A power train test apparatus comprising: an electric dynamometer having a shaft and a second axis arranged in parallel with each other; and a second power absorbing section comprising a flywheel.