JP2952998B2 - Performance test equipment for torque converter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improved structure of a torque converter oil circuit of a device for testing the performance of a torque converter.

B. Summary of the Invention The present invention relates to a device for performing a performance test by attaching an output shaft coupler having torque converter oil supply means to a torque converter, and fitting the fitting sleeve into a fitting sleeve for attaching the output shaft coupler of the torque converter. By providing a pressure gauge and a valve in the drain seal circuit connected to this oil seal part and the drain recovery circuit connected to this oil seal part, the torque converter oil flowing into the drain recovery circuit is adjusted, and the oil pressure of the torque converter oil filled in the torque converter is adjusted to a predetermined value. The value can be held.

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. 3 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, a performance test device for a torque converter as described above is 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 is positioned so as to be coaxial with the face plate 16, and the torque converter 22 is installed using fixing means such as a screw for transmitting the rotational torque of the face plate 16 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 and the torque converter
22 is pressed onto the face plate 16 to set it in a test state.

The output shaft coupler 23 is connected to an electric torque meter 24, a reduction gear mechanism 25, and an electric dynamometer 20 via a brake and a 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 is a lifting drive cylinder as shown in FIG. 5 and is lowered onto the torque converter 22 and mounted in a test state. In this state, a spline shaft 28 provided on the output shaft coupler 23 is spline-fitted to the inner ring 10 of the one-way clutch 9 of the torque converter 22 to partially hold the stator blades 11, although not shown.

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. 5, the torque converter 22 is inserted into the torque converter 22 through the passage 31 from the first oil hole 29 in 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 / clutch unit, 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 to the rotation speed ratio is determined. The test is performed so as to calculate the efficiency, transmission torque ratio and torque volume coefficient.

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.

However, when the amount of torque converter oil leaking into the drain recovery circuit 21 increases, the pressure of the torque converter oil filled in the torque converter 22 cannot be maintained at the specified pressure.

This is because the control valves provided on the first oil passage hole 29 side and the second oil passage hole 30 side of the torque converter oil supply means are adjusted to control the supply pressure and discharge pressure of the torque converter oil, The pressure adjustment of the drain recovery circuit
This is because if a large amount of torque converter oil leaks to the 21 side, it cannot be adjusted well.

As described above, when the pressure of the torque converter oil filled in the torque converter 22 cannot be maintained at the specified pressure, there is a problem that the operation test of the torque converter cannot be performed satisfactorily.

In view of the above points, an object of the present invention is to newly provide a performance test device capable of maintaining the pressure of the torque converter oil in a torque converter at a specified value and performing a good operation 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,
An oil seal is fitted to the outer periphery of the fitting sleeve to maintain oil tightness, and a pressure gauge and a valve are provided in a drain recovery circuit for recovering torque converter oil leaking into the oil seal.

F. Action With the configuration described above, during the test, the pressure of the torque converter oil filled in the torque converter is adjusted, together with adjusting the supply pressure and the discharge pressure of the torque converter oil supply means,
The pressure of the torque converter oil in the torque converter can be maintained at a predetermined value by appropriately adjusting the torque converter oil flowing into the drain recovery circuit by a valve while measuring the torque converter oil with a pressure gauge.

G. Embodiment An embodiment of the torque converter performance test apparatus of the present invention will be described below with reference to FIGS.

In FIGS. 1 and 2, parts corresponding to the conventional example shown in FIGS. 3 to 5 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a schematic vertical sectional view of a main part, and FIG. 2 is an exploded vertical sectional view of a main part, wherein 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 mounted on 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. A vibration-resistant pressure gauge 35 and a needle valve 36 are sequentially installed in a pipe section 34 connected to the passage section 33. The pipe section 34 drawn from the needle valve 36 is connected to a drain oil recovery unit (not shown).

The output shaft coupler 23 configured as described above lowers the output shaft coupler 23 from the separated state shown in FIG. 2, and moves the spline shaft 28 into 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 the same time, the control valve of the torque converter oil supply means is adjusted to control the supply pressure and the discharge pressure of the torque converter oil, thereby adjusting the pressure in the torque converter 22.

At this time, when the torque converter oil leaks from between the inner circumference of the fitting sleeve 12 of the torque converter 22 and the outer circumference of the spline shaft 28, and the torque converter oil flowing out to the drain recovery circuit 21 increases, as follows. I do. That is, while measuring the oil pressure with the pressure gauge 35, the operator adjusts the needle valve 36 and adjusts the amount of torque converter oil flowing out to the drain recovery circuit 21 so that the pressure of the torque converter oil in the torque converter 22 is adjusted to a predetermined value. To keep the value.

By performing the adjustment in this way, the test apparatus of the present example enables the performance test of the torque converter to be performed properly and properly.

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. A pressure gauge is attached to the drain collection circuit that is fitted inside and is fitted with an oil seal on the outer periphery of the fitting sleeve to maintain oil tightness and to collect torque converter oil leaking into the oil seal. During the test, the pressure of the torque converter oil filled in the torque converter was adjusted, the supply pressure and discharge pressure of the torque converter oil supply means were adjusted, and the torque converter oil flowing to the drain recovery circuit was measured with a pressure gauge. The pressure of the torque converter oil in the torque converter is maintained at a predetermined value by appropriately adjusting the pressure with the valve, and a suitable and good performance test can be performed. It has the effect of say.

Further, the pressure gauge can monitor the change in the pressure of the torque converter oil in the torque converter during the test, so that a better test result can be obtained.

In addition, there is an effect that the time to replace the wear of the oil seal can be determined from the measurement value of the pressure gauge.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an essential part showing an embodiment of a torque converter performance test apparatus of the present invention, FIG. 2 is an exploded schematic longitudinal sectional view of the principal part, and FIG. , FIG. 4 is a front view illustrating a conventional performance testing device for a torque converter, and FIG. 5 is a schematic longitudinal sectional view of an output shaft coupler portion thereof. 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
... passage, 33 ... passage, 34 ... pipe, 35 ... pressure gauge,
36 ... Needle valve.

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. In a torque converter performance test apparatus having a combined oil seal and a drain recovery circuit for recovering torque converter oil leaking inside the oil seal, a pressure gauge and a pressure regulating valve are installed in the drain recovery circuit. A torque converter performance test apparatus characterized in that it is constructed as follows.