JP2009276333A - Simplified apparatus for testing and evaluating performance of transmission incorporated in body of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic transmission incorporated in a vehicle that cannot be test-driven and a controlling/evaluating system capable of evaluating the performance of a stepless speed change transmission without removing it from the body of a vehicle. <P>SOLUTION: Respective shanks of externally controllable rotation load control devices 1 and 2 each having a torque sensor, a clutch, a flywheel, and a variable braking force brake connected in series are coupled to respective drive shafts or tire hubs of drive wheels via adapters selected according to the state of damage in the underbody of a vehicle 3. A test-driver operates an accelerator 33 and a brake 34 in a certain pattern and, at the same time, changes the torque of rotation loads on the driving wheels by using the rotation load control devices 1 and 2. At this point, the controlling/evaluating system evaluates the performance of an automatic transmission and a stepless speed change transmission from the number of engine revolutions, the number of axle revolutions, and the measured value of torque. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  This invention simulates the situation where a vehicle is traveling on an actual road for a vehicle for which a running test is not possible, and performs performance tests and evaluations of automatic transmissions and continuously variable transmissions while being mounted on the vehicle body. It relates to a device that can be used and a control / evaluation method.

  Conventionally, as a performance testing device for automatic transmissions and continuously variable transmissions, there is a device for testing the performance of a single unit by separating the transmission from the vehicle body, but it cannot be tested in a state where it is assembled to the vehicle body.

  There is also a so-called chassis dynamo that simulates the running state of a vehicle by controlling a power absorber that is mounted on the roller with the driving wheel of the vehicle coupled to the roller. It is not possible to measure and evaluate the performance of automatic transmissions and continuously variable transmissions of vehicles that are missing or damaged.

  In addition, the following patent document 1 and patent document 2 can be mentioned as a well-known technique relevant to this invention.

JP 2000-258303 A JP-A-9-61309

  When performing a performance test of an automatic transmission and a continuously variable transmission according to the above-described conventional technology, the transmission single unit test apparatus must remove the transmission from the vehicle body, which takes a lot of work. The chassis dynamo is a test device based on a healthy vehicle, and an accident vehicle damaged around the undercarriage cannot be subjected to a performance test depending on the degree.

  The present invention provides a control / evaluation system that can inspect the performance according to the state of an accident vehicle without removing the transmission from the vehicle body.

  In order to solve the above-mentioned problem, in the transmission test apparatus of the present invention, a simulated rotational load torque at the time of traveling is applied to the driving wheel by a rotational load apparatus that is directly connected to each axle, and the rotational load control apparatus and the axle are Coupling is performed by an adapter selected according to the damage condition of the accident vehicle. In the test, after the engine is started, the driving tester performs the accelerator and brake operation or controls the unit that drives the accelerator and brake with an external signal, and the rotational load torque generated by the rotational load control device is adjusted accordingly. By changing the load, a load situation simulating actual driving is created for the vehicle, and the performance of the automatic transmission and continuously variable transmission is determined from the time series data of accelerator depression amount, rotational load torque, engine speed, and axle speed at that time. Can be evaluated.

  As described above, according to the present invention, an appropriate adapter is used in accordance with the degree of damage to the undercarriage of the vehicle, leaving a portion that operates normally when viewed from the transmission side on the vehicle body side, and from there the rotational load By combining the devices, the rotational load torque can be changed in a constant pattern corresponding to the accelerator and brake operations by the driving tester. This feature makes it possible to easily test the performance of the transmission without removing it from the vehicle body, and to evaluate the state of the transmission based on the result, thereby eliminating the work of removing the transmission. In addition, it is possible to automatically test and evaluate the automatic transmission performance of the automatic transmission and the continuously variable transmission by operating the accelerator, the brake, and the rotational load device in a constant pattern by the controller. In addition, the normal vehicle inspection does not confirm the operation of the transmission, but using this device and its control and evaluation methods makes it possible to easily check and evaluate its performance and increase vehicle safety. .

  Next, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view of an external appearance of the apparatus showing the system configuration of the present invention, FIG. 2 is a schematic diagram showing a time change graph of information obtained by the test of the present invention, and FIG. 3 shows slight damage to the undercarriage of the vehicle. FIG. 4 is a perspective view of an external appearance of the hub connected to the rotary load device, and FIG. 4 illustrates the state of connection with the rotary load device at the equilateral joint portion on the vehicle side when the vehicle undercarriage is severely damaged. FIG. 5 is an external perspective view of the constant velocity joint adapter, FIG. 6 is an external perspective view of the rotational load control device, and FIG. 7 is an external perspective view around the accelerator pedal showing a method of measuring the amount of depression of the accelerator. .

  The time change of the accelerator depression is detected by an angle sensor attached to the accelerator, the engine speed is obtained from a signal line connected to the car body rotation meter, and the rotational load torque and axle speed are controlled by the rotational load. It is detected by the torque meter of the device.

  As shown in FIG. 1, the device of the present invention has a load on the rotational load device in response to the stepped state of the pair of left and right rotational load control devices 1 and 2 and the accelerator 33 that applies a rotational load that simulates actual traveling to the drive wheel axle. It comprises a controller 4 that controls the state. Note that the driving wheel shaft portion of the vehicle under test and the rotational load control devices 1 and 2 are coupled by selecting an adapter to be relayed according to the degree of damage to the undercarriage of the vehicle under test. When the hub directly coupled to the tire around the undercarriage is healthy, as shown in FIG. 3, the hub and the rotational load control devices 1 and 2 can be directly coupled by the hub coupling coupling 11 which is a component thereof. Also, if the hub is severely damaged and the hub cannot be used, as shown in FIG. 4, the damaged hub is removed from the constant velocity joint, and the portion is replaced with the constant velocity joint adapter 17 shown in FIG. The rotational load control devices 1 and 2 are coupled via the adapter.

  Next, the structure of the rotational load control device will be described with reference to FIG.

  The rotational load control device includes a hub coupling 11, a torque sensor 12, a clutch 13, a flywheel 14, and a variable braking force brake 16 that are coupled in series from the side closer to the vehicle drive shaft. The braking force of the variable braking force brake 16 is controlled by a signal from the controller 4. Here, the clutch 13 has a function of separating the rotational load of the rotational load control devices 1 and 2 from the vehicle drive shaft, and the flywheel 14 gives a pseudo vehicle inertia resistance to the wheel drive shaft, and the variable braking force brake 16. Is a means to give pseudo resistance when climbing the wheel drive shaft.

  Next, a test method using the apparatus of the present invention and data obtained thereby will be described.

  As shown in FIG. 1, rotational load control devices 1 and 2 are coupled to each of the drive shafts of the vehicle under test 3 from which damaged parts around the drive wheels placed on the elevator 5 are removed, and the driving tester H As shown in FIG. 7, the accelerator 33 and the brake 34 are operated in accordance with a predetermined procedure, and the rotational load torque is changed according to a program determined in advance for performance confirmation by the control by the rotational load control devices 1 and 2 accordingly. The pedal depression amount sensor 35 attached to the accelerator pedal 33 detects the depression amount of the accelerator 33, and the torque sensor 12 of the rotation load control devices 1 and 2 shown in FIG. The engine speed is obtained from each line, and the transmission performance is evaluated from the information shown in FIG. .

  In the present invention, as shown in FIG. 11, the automatic transmission performance of the automatic transmission and the continuously variable transmission is automatically changed by replacing the driver's operation of the accelerator 33 and the brake 34 with driving devices 36 and 37 that can be controlled externally. It becomes possible to test and evaluate.

  FIG. 8 shows an example when the present invention is applied to a front-wheel drive vehicle or a four-wheel drive vehicle, and FIG. 9 shows an example of time-series data obtained by applying it to a front-wheel drive light vehicle. An example of this is shown in FIG. Furthermore, an example of automating the test evaluation is shown in FIG.

  For front-wheel drive vehicles and four-wheel drive vehicles, as shown in FIG. 8, a pair of left and right rotational load control devices is selected by selecting an adapter in accordance with the damage situation of the undercarriage on the front wheel portion which is the main drive wheel shaft. The rotary load control devices 1 and 2 are controlled by the controller 4 in response to the accelerator depressing of the driving tester H who has entered the vehicle under test, and the rotary load changes according to a predetermined program. As a result, it is possible to obtain time-series data of the accelerator depression amount, the engine speed, the rotational load torque, and the axle speed, and the transmission performance can be evaluated based on the data.

  FIG. 9 is an example of data obtained as a result of testing a light vehicle using the apparatus shown in FIG. 8. The speed change function is a step change in the axle rotation speed, and the impact force due to the speed change is a change in load torque. Can be read from. In this data, when shifting up from the 3rd speed indicated by the broken line to the 4th speed, a large impact is generated when the clutch inside the automatic transmission is connected due to the mismatch between the engine speed and the axle speed. It is determined that the speed change function is abnormal and cannot be reused.

  As for rear wheel drive vehicles, as shown in FIG. 10, a pair of left and right rotational load control devices 1 and 2 is coupled to the rear wheel portion, which is the main drive wheel shaft, by selecting an adapter according to the damage situation of the undercarriage. As with front-wheel drive vehicles and four-wheel drive vehicles, it is possible to obtain time-series data of accelerator depression amount, engine speed, rotational load torque, and axle speed for evaluating transmission performance. Transmission performance can be evaluated by data.

  In the automatic measurement evaluation system shown in FIG. 11, the accelerator and the brake are driven by externally controllable drive devices 36 and 37 in accordance with a program incorporated in the controller, and the engine speed and rotational load torque obtained for the operation are obtained. The performance of an automatic transmission can be evaluated based on time-series data of axle rotation speed.

  The present invention can be used in the industrial field of taking out and selling used parts for reusing a transmission of a vehicle that cannot be run.

1 is an external perspective view of an apparatus showing a basic configuration of the present invention. It is a schematic diagram of the time change graph of the information obtained by the test of this invention. It is an apparatus external appearance perspective view which shows the coupling | bonding state at the time of couple | bonding a rotational load control apparatus with a hub part. It is an apparatus external appearance perspective view which shows the coupling | bonding state in the case of couple | bonding a rotational load control apparatus with a constant velocity joint part. It is an external appearance perspective view of the adapter used when connecting a rotational load control apparatus with a constant velocity joint part. It is an external appearance perspective view of a rotational load control apparatus. It is a perspective view explaining the measuring method of the accelerator depression amount. 1 is an external perspective view showing an application example to a front wheel drive vehicle and a four wheel drive vehicle according to a first embodiment of the present invention. Example of test data obtained by the apparatus of the first embodiment of the present invention It is an external appearance perspective view which shows the example applied to the rear-wheel drive vehicle concerning 2nd embodiment of this invention. It is an external appearance perspective view which shows the automatic measurement evaluation system concerning 3rd embodiment of this invention.

Explanation of symbols

1: Rotary load control device A
11: Hub coupling coupling 12: Torque sensor 13: Clutch 14: Flywheel 15: Bearing 16: Variable braking force brake 17: Constant velocity joint adapter 17a: Flange 17b: Drive shaft 2: Rotational load control device B
3: Vehicle body 31: Hub 32: Constant velocity joint receiver 33: Accelerator pedal 34: Brake pedal 35: Accelerator pedal depression amount sensor 36: Accelerator driving unit 37: Brake driving unit 4: Controller 5: Elevator H: Driving tester

Claims (3)

  Torque sensor, clutch, flywheel, and variable braking force brake are connected in series. The externally controllable rotational load control device shaft and transmission can be damaged around the undercarriage of the drive shaft or tire hub. A device that can be coupled via an adapter selected accordingly to give an arbitrary rotational load torque during vehicle engine rotation.   The device according to claim 1 is connected to the driving wheel side of the car, and the accelerator and brake are operated in a certain pattern, and at the same time the rotational load torque for the driving axle is changed in a certain pattern, and the engine speed and axle speed at that time are changed. A control / evaluation method that evaluates the automatic transmission performance of automatic transmissions and continuously variable transmissions from measured torque values.   The device according to claim 1 is connected to the drive wheel side of the car, and the accelerator and brake are operated in a fixed pattern by a drive device that can be externally controlled. At the same time, the rotational load torque on the drive axle is changed, and the engine speed and axle rotation at that time Control and evaluation method that automatically tests and evaluates the automatic transmission performance of automatic transmissions and continuously variable transmissions based on the measured values of the number and torque.

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