JP2952999B2 - Performance test equipment for torque converter - Google Patents

Description

The present invention relates to an improved structure of an apparatus for testing the performance of a torque converter.

B. Summary of the Invention The present invention relates to an apparatus for performing a performance test by attaching an output shaft coupler having a torque converter oil supply means to a torque converter, and a fitting sleeve for attaching a spline shaft of the output shaft coupler of the torque converter. By providing a pneumatic circuit connected to the compressed air source via a switching valve in parallel with the drain recovery circuit connected to the oil seal part fitted to the Torque oil remaining between the fitting sleeve and the spline shaft is drained by the compressed air sent so that the two can be easily separated from each other.

C. Prior Art In general, there is a torque converter as one of important components of an automatic transmission for a vehicle as shown in FIG. 2 which shows an example of a sectional structure thereof. This uses a screw hole 3 of a ring gear 2 integrally joined to a casing 1 to connect a crankshaft of an engine (not shown) of a vehicle, and a spline cylinder integral with a turbine blade 4 rotatably held in the casing 1. 5, a hollow output shaft 6 connected to a vehicle transmission (not shown) is spline-fitted. The casing 1 is driven and rotated with the operation of the engine. The pump blades 7 formed in the casing 1 facing the turbine blades 4 cause the turbine blades 4 to rotate via the torque converter oil filled in the casing 1. Are rotated together with each other to transmit the driving force from the engine to the output shaft 6.

Reference numeral 8 in the drawing denotes a stator holding cylinder that holds the stator blades 11 by spline fitting to the inner race 10 of the one-way clutch 9. The torque converter oil is supplied to the fitting sleeve 12 integrated with the casing 1 and the stator holding cylinder 8 in the vehicle operating state.
Into the casing 1 through a narrow gap passage 13 between
The fluid flows through a gap passage 14 between the spline cylinder 5 and the casing 1 to a passage 15 formed in the output shaft 6.

When performing a performance test of such a torque converter,
Usually, in order to reproduce the actual running state, the rotation speed of the casing 1 and the output shaft 6, the pressure and oil temperature of the torque converter oil, the rotation torque of the casing 1, and the like are set.

Conventionally, there is a torque converter performance test device as described above as illustrated in FIG. Here, a face plate 16 for installing a torque converter is mounted on a frame 17 so that the face plate 16 is freely rotatable with its axis being vertical.

On the face plate 16, the torque converter 22 sequentially sent by the torque converter carry-in / out device 34 is positioned so as to be coaxial with the face plate 16, and the rotational torque of the face plate 16 is
The torque converter 22 is installed using a fixing means such as a screw for transmitting the torque to the torque converter 22.

An electric dynamometer 20 is connected to the face plate 16 via an input torque meter 18 and a gear mechanism 19, and the face plate 16 is configured to be rotatable by the electric dynamometer 20.

An output shaft coupler is provided above the face plate 16 in the frame 17.
23 is mounted so as to be able to move up and down by a lifting drive cylinder.

The output shaft coupler 23 can be detachably spline-fitted to the torque converter 22, as shown in FIG. 4, and presses the torque converter 22 onto the face plate 16 to set it in a test state.

The output shaft coupler 23 is connected with an electric dynamometer 20 via an output shaft torque meter 24, a reduction gear mechanism 25, and a brake and clutch unit (not shown). Thus, the driving force of the electric dynamometer 20 is transmitted to the output shaft coupler 23.

Although not shown, a torque converter oil supply means for controlling the supply of torque converter oil to the torque converter 22 is assembled to the output shaft coupler 23.

The output shaft coupler 23 lowers the output shaft coupler 23 from the separated state shown in FIG. 5, and as shown in FIG.
28 is inserted and fitted into the fitting sleeve 12 of the torque converter 22, and an oil seal 27 is fitted around the outer circumference of the fitting sleeve 12 to connect the torque converter oil so as to protect the oil tightness. Be attached. In this state, the spline shaft 28 provided on the output shaft coupler 23 is partially omitted from illustration.
To the inner ring 10 of the one-way clutch 9 of the torque converter 22 to hold the stator blades 11.

At the same time, the oil seal 27 of the oil seal receiver 26 provided on the output shaft coupler 23 fits on the outer periphery of the fitting sleeve 12 of the torque converter 22 to prevent the torque converter oil from leaking outside.

The output shaft coupler 23 is provided with a first oil passage hole 29 and a second oil passage hole 30 connected to the torque converter oil supply means. First oil hole 29
Is connected to a passage 31 which is a through hole at the center of the spline shaft 28. The second oil passage 30 is connected to the passage 32 of the spline shaft 28.

A drain recovery circuit 21 is connected and arranged in a space between the oil seal 27 and the oil seal receiver 26 of the output shaft coupler 23.

In the performance test apparatus configured as described above, when a stall performance test is performed, as shown by an arrow in FIG. 4, the torque converter 22 enters the torque converter 22 through the passage 31 from the first oil hole 29 of the torque converter oil supply means. Supply oil. At the same time, the torque converter oil in the torque converter 22
Circulation from 32 through the second oil passage 30 to the torque converter oil supply means.

Further, at the time of the transmission torque performance test (slip test), the torque converter oil is flowed in the opposite direction to that described above.

In each of the tests described above, torque converter oil that has leaked into the space of the oil seal receiver 26 from between the fitting sleeve 12 and the spline shaft 28 is recovered through the drain recovery circuit.

In the stall performance test, the brake of the clutch and the clutch unit is operated to restrain the rotation of the output shaft coupler 23, and the clutch is turned off to cut off the transmission of the driving force from the electric dynamometer 20 to the output side. Then, while driving the electric dynamometer 20, the supply pressure and the discharge pressure of the torque converter oil to the torque converter 22 are controlled so as to be a preset hydraulic pressure,
The detected torque value of the output side torque meter is obtained, and the stall torque ratio and the torque coefficient are calculated.

Next, in the transmission torque performance test, the clutch was connected without using the brake of the brake and clutch unit, and the electric dynamometer 20 was rotated at a high speed with the specified torque, and the reduction gear mechanism was used.
By 25, a rotation difference is forcibly applied between the input side and the output side of the torque converter 22, and a torque is generated on the output side to perform a transmission torque performance test. Also in this case, the supply pressure and the discharge pressure of the torque converter oil to the torque converter 22 are controlled so as to be respectively set to predetermined values, the detected torque value of the output side torque meter 24 is obtained, and the torque converter 22 with respect to the rotation speed ratio is obtained. The test is executed by calculating the efficiency, the transmission torque ratio and the torque capacity coefficient.

The torque converter 22, which has completed the test as described above,
From the state where the output shaft coupler 23 shown in FIG.
As shown in the figure, the output shaft coupler 23 is lifted and separated by the lifting drive cylinder, and is brought into the separated state shown in FIG.

Next, the torque converter 22 that has completed the test is sent out by the torque converter carry-in / out device 34. At the same time, a new torque converter 22 is supplied, and a test is executed by the operation described above.

D. Problems to be Solved by the Invention The conventional torque converter performance testing device as described above is a torque converter in which the oil seal 27 of the testing device is fitted into the outer periphery of the fitting sleeve 12 and filled inside the torque converter 22. It is intended to keep oil tight. For this reason, it is not possible to prevent the torque converter oil from leaking from the gap between the inner circumference of the fitting sleeve 12 and the outer circumference of the spline shaft, and the torque converter oil leaked from this portion is recovered through the drain recovery circuit 21. Like that.

As described above, during the test of the torque converter 22, the non-lubricating torque converter oil remains in the fitting gap between the inner circumference of the fitting sleeve 12 and the outer circumference of the spline shaft.

Therefore, when the output shaft coupler 23 is pulled up and removed from the torque converter 22 after the end of the operation test, the fitting portion between the fitting sleeve 12 and the spline shaft comes into close contact with each other, and sometimes the output shaft coupler 23 is pulled up. With the torque converter
22 may be taken up. Therefore, there is a problem that the work of separating them is extremely difficult and the workability is poor.

In view of the above, it is an object of the present invention to provide a torque converter performance test device that can easily remove a spline shaft from a torque converter after a torque converter test.

E. Means for Solving the Problems The torque converter performance test device of the present invention is configured such that a spline shaft provided with a torque converter oil supply means of an output shaft coupler in the test device is fitted to an inner periphery of a fitting sleeve of the torque converter. And attach it inside,
A pneumatic circuit connected to a compressed air source via a switching valve in parallel with a drain recovery circuit that fits an oil seal to the outer periphery of the fitting sleeve to maintain oil tightness and recover torque converter oil leaking to the oil seal It is characterized by being provided.

F. Action By configuring as described above, after conducting a test by filling the torque converter with torque converter oil, open the switching valve and send compressed air from the pneumatic circuit to the oil seal portion,
The non-lubricating torque converter oil remaining between the fitting sleeve and the spline shaft is blown out to remove the oil, thereby reducing the resistance of pulling out the spline shaft from the torque converter.

G. Embodiment Hereinafter, an embodiment of the torque converter performance test apparatus of the present invention will be described with reference to FIG.

In FIG. 1, portions corresponding to those of the conventional example shown in FIGS. 2 to 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a schematic longitudinal sectional view of a main part of FIG. 1, in which 16 is a face plate, 22 is a torque converter, and 23 is an output shaft coupler.

On the face plate 16, a torque converter 22 is mounted coaxially.

The output shaft coupler 23 is attached to a main body equivalent to the main body of the test apparatus illustrated in FIG.
Is provided. The spline shaft 28 has an outer periphery at its free end,
The torque converter 22 is fitted to the inner circumference of the
Attach to

A first oil passage hole 29 is communicated with a passage 31 which is a through hole formed in the center of the spline shaft. Also, the spline shaft 28
The second oil passage 30 is communicated with a passage 32 which is a through hole formed near the outer periphery of the second oil passage.

The first oil passage hole 29 and the second oil passage hole 30 are respectively connected to torque converter oil supply means (not shown).

The oil seal receiver 26 is installed on the spline shaft 28. An annular notch 26 drilled below the oil seal receiver 26
In a, an oil seal 27 is provided. Further, the spline shaft 28 is connected to a passage portion 33 of the drain recovery circuit 21 which is a through hole opened in the cutout portion 26a. As shown in FIG. 1, in addition to connecting a drain recovery unit to the pipe section 35 connected to the passage section 33, the pipe section 35 branches off from the pipe section 35 as an air pressure circuit and sequentially passes through a check valve 36 and a switching valve 37. Connected to a compressed air source 38.

In this example, a check valve is used as the check valve 36, and a 2-port 2-position electromagnetic switching valve is used as the switching valve 37.

The output shaft coupler 23 configured as described above lowers the output shaft coupler 23 from the separated state shown in FIG. 5, and the spline shaft 28 is connected to the fitting sleeve 12 of the torque converter 22 as shown in FIG. And an oil seal 27 is fitted around the outer periphery of the fitting sleeve 12 so as to protect the oiltightness of the torque converter oil.

At the time of the test, the torque converter 22 is filled with torque converter oil from the torque converter oil supply means through the first oil passage 29 and the passage 31 and the second oil passage 30 and the passage 32 in the connection state shown in FIG. I do.

At this time, torque converter oil that has leaked from between the inner circumference of the fitting sleeve 12 of the torque converter 22 and the outer circumference of the spline shaft 28 is recovered by the drain recovery circuit.

Thus, a stall performance test and a transmission torque performance test of the torque converter 22 are performed with the torque converter 22 filled with the torque converter oil. After the test is completed, a torque converter oil draining operation is performed at a point before the spline shaft 28 is separated from the torque converter 22 by the upward operation.

This torque converter oil draining operation is performed using a pneumatic circuit connected to the oil seal 27.

That is, the electromagnetic switching valve 37 is opened for a predetermined time in response to a command signal from a control unit (not shown).

Then, the compressed air is sent to the compressed air source 38 through the switching valve 37 and the check valve 36, through the pipe portion 35 and the passage portion 33 to the space portion of the oil seal 27, and increases the internal pressure in this space. As a result, the inner circumference of the fitting sleeve 12 and the spline shaft
Non-lubricating torque converter oil remaining between the outer periphery of the torque converter and the outer periphery of the torque converter is blown into the torque converter 22 to perform so-called oil draining.

Since the pneumatic circuit has the check valve 36, it prevents the torque converter oil or the like from flowing back to the switching valve 37 side beyond the check valve 36.

When the torque converter oil draining operation is completed, move to the next process,
The spline shaft 28 is lifted from the torque converter 22 and pulled out. At this time, since there is no torque converter oil between the fitting sleeve 12 and the spline shaft 28, the two can be separated smoothly and can be prevented from lifting.

The torque converter 22 after the completion of the test thus separated
Is transported to the next work place by the torque converter loading / unloading device 34.

H. Effects of the Invention As described in detail above, according to the torque converter performance test device of the present invention, the spline shaft provided with the torque converter oil supply means of the output shaft coupler in the test device is fitted inside the fitting sleeve of the torque converter. Attached to the inside so that it fits around the circumference, an oil seal is fitted to the outer periphery of the fitting sleeve to maintain oil tightness, and in parallel with a drain recovery circuit that collects torque converter oil leaking into the oil seal By providing a pneumatic circuit that connects to the compressed air source via a switching valve, the torque converter is filled with torque converter oil and a test is performed. After that, the switching valve is opened and compressed air is released from the pneumatic circuit to the oil seal portion. And blow off the torque converter oil remaining between the fitting sleeve and the spline shaft to drain the oil.
The spline shaft can be easily pulled out from the torque converter to be separated therefrom, thereby improving the workability.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an essential part of an embodiment of a torque converter performance test apparatus according to the present invention, FIG. 2 is a partial sectional side view of a conventionally used torque converter, and FIG. FIG. 4 is a schematic longitudinal sectional view of an output shaft coupler part of the converter, and FIG. 5 is a schematic longitudinal sectional exploded view of a main part of the converter. DESCRIPTION OF SYMBOLS 1 ... Casing, 12 ... Fitting sleeve, 13 ... Gap passage, 14 ... Gap passage, 21 ... Drain recovery circuit, 22 ... Torque converter, 23 ... Output shaft coupler, 26 ... Oil seal receiver , 27 …… oil seal, 28 …… spline shaft,
29: first oil passage hole, 30: second oil passage hole, 31: passage, 32
…… Aisle, 33 …… Aisle part, 34 …… Torcon loading / unloading device,
35… Tube, 36… Check valve, 37… Switching valve, 38…
Compressed air source.

Claims (1)

(57) [Claims] 1. A spline shaft of an output shaft coupler inserted into a fitting sleeve of a torque converter so as to be spline-coupled, torque converter oil supply means provided on the output shaft coupler, and fitted on an outer peripheral portion of the fitting sleeve. A performance test device for a torque converter having a drain recovery circuit for recovering torque converter oil leaking inside the combined oil seal, wherein a pneumatic circuit connected to a compressed air source via a switching valve in parallel with the drain recovery circuit. A torque converter performance testing device, comprising: