JPH0664134U - Power train test equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a power train testing device that has a small installation area and can test FF and FR transmissions without moving test equipment. The output of the FR transmission 13 is biaxially output by the reduction gear 20 having a reduction ratio substantially equal to the final reduction ratio, the differential gear is omitted, and the FF transmission 4 and the power absorbing parts 6 and 10 are shared, and The power absorption unit 10 on one side is arranged in a U shape by using a constant velocity machine 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power train test apparatus for a vehicle transmission, and more particularly to a power train test apparatus that can be commonly used for testing a front engine front wheel drive transmission and a front engine rear wheel drive transmission.

[0002]

[Prior art]

 Automobile power train is a generic term for mechanical elements that transmit engine output to wheels, such as clutches, torque converters, manual and automatic transmissions, final reduction gears and differentials, viscous joints and axle shafts. It is an important factor that affects the driving feeling.

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

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

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 drive motor, 2 is a constant velocity machine, and 3 is an input shaft torque meter. 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. Reference numeral 5 is an output shaft torque meter, 6 is a power absorption unit composed of a flywheel 7 and an electric dynamometer 8, 9 is a second output shaft torque meter, and 10 is a first composed of a flywheel 7 and an electric dynamometer 8. 2, a reference numeral 11 is a drive shaft connecting the output shaft on one side of the FF transmission 4 and the torque meter 5 for the output shaft, and 12 is an output shaft on the other side of the FF transmission 4. It is a drive shaft that connects the torque meter for the second output shaft.

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

Generally, the rotation speed of the engine is about 6000 rpm, but overdrive is generally used for the transmission, and the output shaft of the FR transmission needs to be measured at about 8000 rpm. Becomes Therefore, if an attempt is made to absorb power at the output shaft of the FR transmission, a high-speed and large-capacity power absorption unit is required. Therefore, deceleration is performed using a differential gear and the output shaft is biaxial, and the capacity of the power absorption device is halved. Then, 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 leaving the output shaft torque meters 5 and 9 and the power absorption units 6 and 10 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. In the latter case, it is necessary to manage the surface plate sufficiently so that there are no steps, protrusions, or foreign matter such as dust, and a large amount of air is required. After the move, we perform centering work and connect each device.

[0010]

[Problems to be solved by the device]

 If you try to test the FR transmission after the FF transmission test, or try to test the FF transmission after the FR transmission test, the drive motor, the constant velocity machine, the input shaft The input side test equipment such as a torque meter must be moved. In order to move, not only a moving surface plate and turntable but also a moving device and a power source device using electricity, hydraulic pressure, pneumatic pressure, etc. are required.After the move, centering work, connection work, and installation work are required. Therefore, the equipment cost becomes high and a lot of work time is required.

[0011] Furthermore, if the power absorption unit composed of a flywheel and an electric dynamometer is arranged in a straight line, the length becomes long, and if a differential gear is used for the FR transmission test, the width dimension in the direction perpendicular to the length is also obtained. growing. If a moving device and its auxiliary equipment such as a power source are also included, the installation area becomes large and a large building is required.

An object of the present invention is 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 Problems]

 Means for solving the above-mentioned problem in the present invention is to make the input / output shaft distance substantially equal to the input / output shaft distance of the FF transmission so that the speed reduction ratio is substantially equal to the speed reduction ratio of the final reduction gear in the automobile. A reduction gear that has, a torque meter for an output shaft that is connected to an output shaft on the opposite side of the input shaft of the reduction gear, a power absorption unit that includes an electric dynamometer and a flywheel, and an input of the reduction gear. A torque meter for an input shaft and a driving motor, which are installed at a position facing the shaft with a distance capable of connecting the FR 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 position facing the second output shaft of the FF transmission and a drive shaft, can be connected to the second output shaft torque device, and the second output shaft torque meter is disposed in a U-shape via a constant speed machine. , An electric motor with the output shaft of the speed reducer installed parallel to the shaft center To configure the second power absorption unit consisting of a force gauge and the flywheel.

[0014]

[Action]

 The FF transmission has an input shaft and an input shaft torque meter connected by a propeller shaft, and an output shaft on the same side as the input shaft is a second output shaft torque meter and an output shaft on the opposite side of the input shaft. The output shaft can be tested by connecting it to the output shaft of the reducer by a drive shaft.

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

[0016]

【Example】

 Hereinafter, the present invention will be described based on an embodiment shown in FIGS. 1 and 2. The same parts as those in FIGS. 3 and 4 are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 1, which is an explanatory plan view of the FF transmission at the time of a test, reference numeral 20 designates an input / output shaft distance substantially equal to an input / output shaft distance of the FF transmission 4, and a final reduction gear (for example, a derailleur). A reduction gear having a reduction ratio (eg, 1: 4) substantially equal to the reduction gear ratio of the gear, and an output shaft opposite to the input shaft of the reduction gear 20 has a flywheel 7 through an output shaft torque meter 5. A power absorption unit 6 including an electric dynamometer 8 is connected and installed.

At a position facing the input shaft of the speed reducer 20, the input shaft torque meter 3 and the drive shaft torque meter 3 are separated by a distance that can connect the FR transmission 13 via the propeller shaft 25 shown in FIG. The electric motor 1 is installed.

In addition, at a position facing the output shaft on the same side as the input shaft of the speed reducer 20, the two output shafts of the FF transmission 4 and the drive shafts 23 and 24 are separated from each other. A second output shaft torque meter 9 is installed, and a second power absorber 10 composed of a flywheel 7 and an electric dynamometer 8 is further arranged in a U-shape through a constant velocity machine 21. The axis of the power absorber 10 and the axis of the output shaft of the speed reducer 20 are installed in parallel.

As shown in FIG. 1, in order to test the FF speed changer 4 by the power train test apparatus in which the test equipment is installed as described above, the input shaft and the torque meter 3 for the input shaft are propeller-operated. The output shaft on the same side as the input shaft is connected by the drive shaft 23 and the torque meter for the second output shaft, and the output shaft on the opposite side to the input shaft is driven by the output shaft of the reduction gear 20. It is connected by a shaft 24.

When the driving electric motor 1 drives the FF transmission 4, which is a sample machine, through the input shaft torque meter 3, one of the two output shafts of the FF transmission 4 outputs the output shaft of the speed reducer 20. Is connected to the power absorption unit 6 via the output shaft torque meter 5, and the other is connected to the second output shaft torque meter 9 and the second power absorption unit 10 via the constant velocity machine 21. The test can be conducted.

To test the FR transmission 13, as shown in FIG. 2, its input shaft is connected to the input shaft torque meter 3, and its output shaft and the input shaft of the speed reducer 20 are connected to each other. Is connected by a propeller shaft 25, and the output shaft of the speed reducer 20 and the second output shaft torque meter 9 are connected by a propeller shaft 26.

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

[0024]

[Effect of device]

 In the power train test apparatus according to the present invention, 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, so that it is shared with the FF transmission 4 of the power absorbing unit. The input side test equipment consisting of the driving motor 1 and the torque meter 3 for the input shaft and the speed reducer 20, the torque meter 5 for the output shaft, the power absorbing section 6, the torque meter 9 for the second output shaft, etc. It is possible to deal with any test of the FF transmission 4 and the FR transmission 13 without moving the output side test equipment including the speed reducer 21 and the second power absorption unit 10.

[0025] Therefore, auxiliary equipment such as a moving surface plate of the test facility equipment, a moving device using electricity, hydraulic pressure, and pneumatic pressure, and a power source device for hydraulic pressure and pneumatic pressure are not required, and the facility cost is significantly reduced. In addition, moving work, centering after moving, and installation work become unnecessary, and high-precision installation, etc. as a countermeasure against vibration of the input side test facility equipment that rotates at high speed is not repeated, so many Saves time and efficiency, and prepares for the exam in a short time.

Further, since the second power absorbing portion 10 is arranged in a U shape by using the constant velocity machine 21, the length is short unlike the conventional one in which the dynamic force absorbing portions 6, 10 are arranged in a straight line. Moreover, since the differential gear is omitted as the biaxial output by the speed reducer 20 having a reduction ratio substantially equal to the final reduction ratio, the width dimension in the direction perpendicular to the length is also reduced, and the moving device and its auxiliary equipment are not provided. The equipment installation area is significantly reduced, and a small test room or small building can be achieved.

[Brief description of 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 a FR transmission test according to an embodiment of the present invention.

FIG. 3 is a plan view illustrating a conventional FF transmission test.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Driving electric motor 3 ... Input shaft torque meter 4 ... Front engine front wheel drive (FF) transmission 5 ... Output shaft torque meter 6 ... Power absorber 7 ... Flywheel 8 ... Electric dynamometer 9 ... Second Torque meter for output shaft 10 ... Second power absorber 13 ... Front engine rear wheel drive (FR) transmission 20 ... Reduction gear 21 ... Constant velocity machine 22, 25, 26 ... Propeller shaft 23, 24 ... Drive shaft

Claims (1)

[Scope of utility model registration request] 1. A power train test apparatus for a transmission of an automobile, wherein the input-output shaft distance is substantially equal to the input-output shaft distance of the front engine front wheel drive transmission, and a reduction gear ratio is substantially equal to a final reduction gear ratio. A torque meter for an output shaft connected to an output shaft on the opposite side of the input shaft of the speed reducer, a power absorption unit including an electric dynamometer and a flywheel, and a position facing the input shaft of the speed reducer. In, the input shaft torque meter and the drive motor installed at a distance that can connect the front engine rear wheel drive transmission via the propeller shaft, and the output shaft on the same side as the input shaft of the speed reducer. A second output shaft torque meter installed at a position facing each other with a distance connectable with the two output shafts of the front engine front wheel drive transmission and the drive shaft, and a U-shape through a constant velocity machine. Position the output shaft of the speed reducer And a power train test apparatus comprising an electric dynamometer having a shaft center installed in parallel with each other and a second power absorption unit including a flywheel.