JPH10221211A - Automatic transmission and testing device for its valve body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of the atmosphere due to oil vapor by providing a switching means feeding the oil from an oil temperature adjustment section to an oil discharge section without guiding it through an oil pan during a nontesting period. SOLUTION: The oil of about 90 deg.C from an oil temperature adjustment section 10 is heated by a heater 11 for the cooled quantity during its transit in a pipe 12, then it enters an oil pan 2 from an oil feed port 14 via a solenoid valve 19 and a flow switch 18 during a test, and it is sucked to an automatic transmission 15 and discharged. The excess oil is discharged to an oil discharge unit 16 and is returned to the oil temperature adjustment section 10. During a nontesting period, the oil enters the oil discharge unit 16 through the pipe 12 from the solenoid valve 19 and is returned to the oil temperature adjustment section 10 by the switching of the solenoid valve 19. During the nontesting period, the oil enters the oil discharge unit 16 from the oil temperature adjustment section 10 via the heater 11, a flow switch 13, and the solenoid valve 19, and it is again returned to the oil temperature adjustment section 10. The oil does not pass above the oil pan 2, and the vaporized quantity of oil is decreased. The contamination by oil vapor is decreased, and the atmosphere is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transmission and an apparatus for testing a valve body thereof.

[0002]

2. Description of the Related Art FIG. 4 is a plan view of a conventional test apparatus for an automatic transmission, and 1 is a roller provided movably.
An automatic transmission (not shown) is carried by the rollers 1 supported on both sides. An oil pan 2 for receiving oil is provided below the roller 1. Reference numeral 3 denotes a DC motor (drive unit), which is connected via an input shaft 4 to the input side of the automatic transmission. Reference numeral 5 denotes a pair of output shafts connected to the output side of the automatic transmission, and reference numeral 6 denotes a pair of constant speed machines each connected to the output shaft 5, which are connected to each other at a constant speed. Reference numeral 7 also denotes a pair of constant velocity machines connected to the constant velocity machine 6. Reference numeral 8 denotes a pair of flywheels connected to the constant velocity machine 7, and 9 denotes a DC generator connected to one flywheel 8.

FIG. 5 shows the oil supply circuit shown in FIG.
Reference numeral 0 denotes an oil temperature control unit for adjusting the temperature of the oil to a temperature during actual operation, for example, about 90 degrees.
2, a heater for heating the oil whose temperature has dropped, 13 a flow switch for detecting the flow of oil, 14 an oil supply port provided at the connection between the oil pan 2 and the pipeline 12, and 15 an oil supply port. An automatic transmission supported by the roller 1 on the pan 2 and connected to the input shaft 4 and the output shaft 5, 16 is an oil drain unit connected to the oil pan 2 via the pipe 12, and 17 is on the oil pan 2 Shows the direction of the oil flowing through it. Oil drain unit 16
Is connected to the oil temperature adjusting unit 10 via a pipe 12.

In the above configuration, the automatic transmission 15 is carried on the rollers 1 and is connected to the input shaft 4 and the output shaft 5.
Here, when the DC motor 3 is driven, its rotation is transmitted to the input side of the automatic transmission 15 via the input shaft 4 and further transmitted to the output side of the automatic transmission 15 at a predetermined gear ratio. The power is transmitted to the power absorbing unit including the flywheel 8 and the DC generator 9 via the output shaft 5 and the like, and the power is absorbed.

On the other hand, the automatic transmission 15 is provided with a valve body that is operated to change the speed by hydraulic pressure by opening and closing a valve. An oil supply circuit is provided to supply this oil and oil for lubrication. . The oil is warmed to 90 degrees in the oil temperature control unit 10 and cooled while passing through the pipeline 12, so that the oil is heated by the heater 11, and after the flow of the oil is detected by the flow switch 13, the oil is supplied from the oil supply port 14. The oil is supplied onto the oil pan 2. This oil is absorbed by the automatic transmission 15 and is used for shifting operation and lubrication. The surplus oil flows on the oil pan 2 along the arrow 17, is received by the oil discharge unit 16, and is returned to the oil temperature adjusting unit 10.

[0006]

As described above, in the conventional automatic transmission test apparatus, the oil for shifting operation and the like of the automatic transmission 15 is supplied to a vehicle or the like in the same state as in actual operation. Need to be heated to about 90 degrees to
In addition, if the oil is stopped during the non-test, the oil temperature becomes unstable when the test is restarted. Therefore, it is necessary to keep the oil flowing, and the oil always flows on the oil pan 2. This oil was easy to vaporize at high temperature, the surroundings became dirty with oil, and the atmosphere became worse.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has an automatic transmission and a valve body that can always flow oil and prevent the atmosphere from being deteriorated by oil. The purpose of the present invention is to obtain a test device.

[0008]

According to a first aspect of the present invention, there is provided a test apparatus for an automatic transmission, comprising: an oil temperature adjusting section for adjusting an oil for shifting operation of the automatic transmission to a predetermined temperature; An oil pan to be supplied to the automatic transmission, an oil drain section for receiving oil drained from the oil pan, and oil from the oil temperature adjusting section during the test, and oil from the oil temperature adjusting section during the non-test. Switching means for sending the oil to the oil discharge section.

According to a second aspect of the present invention, there is provided a test apparatus for a valve body of an automatic transmission, comprising: an oil temperature adjusting section for adjusting oil for shifting operation of the valve body to a predetermined temperature; and an oil for receiving oil from the valve body. The oil from the pan and the oil pan receiving the oil from the oil pan, and the oil from the oil temperature control unit to the valve body during the test, and the oil from the oil temperature control unit to the oil discharge unit during the non-test This is provided with switching means for sending.

[0010]

Embodiment 1 Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 show a plan view of a test device for an automatic transmission according to a first embodiment and a circuit diagram of an oil supply circuit. In the figure,
Reference numeral 18 denotes a flow switch that detects oil flow, and 19 denotes an electromagnetic switch that switches oil flow in the pipeline 12.

In the above configuration, the oil heated to 90 degrees in the oil temperature adjusting section 10 is heated by the heater 11 and then, during a test, the solenoid valve 19 and the flow switch 18.
The oil pan 2 enters the oil pan 2 through the oil supply port 14 and is absorbed by the automatic transmission 15 and discharged. Excess oil is discharged to the oil discharging unit 16 and returns to the oil temperature adjusting unit 10. If the test is not being performed, the oil is supplied to the solenoid valve 19 by switching the solenoid valve 19.
Then, the oil enters the oil drain unit 16 through the pipeline 12 and returns to the oil temperature adjusting unit 10. Other configurations and operations are the same as those of the related art.

According to the first embodiment, during a non-test, the oil enters the oil drain unit 16 from the oil temperature adjusting unit 10 via the heater 11, the flow switch 13, and the solenoid valve 19, and returns to the oil temperature adjusting unit 10. Return. Therefore, the oil does not pass over the oil pan 2, and the amount of oil vaporized decreases. Accordingly, dirt due to oil was reduced and the atmosphere was improved.

Embodiment 2 FIG. 3 shows a configuration of a test apparatus for a valve body of an automatic transmission according to Embodiment 2; 20 is an electromagnetic valve; 21 is a manifold for detecting the oil pressure of each part; A solenoid valve 22 is provided in each conduit. Reference numeral 23 denotes a test stand on which the valve body 24 is set.

In the above configuration, during the test, the oil heated to 90 degrees in the oil temperature control unit 10 is supplied to the two pipes 12.
Through the solenoid valve 20 to the manifold 21,
While detecting the oil pressure, each pipe 12 enters the test stand 23 and the oil pressure is supplied to the valve body 24.
Here, various shift operation tests are performed by opening and closing the valve of the valve body 24. Of course, the oil also acts as a lubricant. The oil that has exited the valve body 24 is received by the oil pan 2, guided to the oil drain unit 16, and then returned to the oil temperature control unit 10. On the other hand, during the non-test, by switching the electromagnetic valve 20, the oil discharged from the oil temperature adjusting unit 10 is sent to the oil discharge unit 16 via the electromagnetic valve 20 and returned to the oil temperature adjusting unit 10.

In the second embodiment as well, during the non-test period, the oil that has exited the oil temperature control unit 10 is sent to the oil discharge unit 16 without passing through the oil pan 2, so that the amount of oil vaporized from the oil pan 2 is reduced. In addition, dirt due to oil is reduced, and the atmosphere is improved.

[0016]

As described above, according to the first and second aspects of the present invention, the oil does not pass through the oil pan during the non-test, so that the amount of oil vaporized in the oil pan is reduced, and the oil is contaminated. Also decreases. Therefore, the atmosphere can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a test apparatus for an automatic transmission according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram of an oil supply circuit in the test apparatus for an automatic transmission according to the first embodiment.

FIG. 3 is a configuration diagram of an apparatus for testing a valve body of an automatic transmission according to a second embodiment.

FIG. 4 is a plan view of a conventional device.

FIG. 5 is a circuit diagram of an oil supply circuit of a conventional device.

[Explanation of symbols]

 2 ... Oil pan 3 ... DC motor 4 ... Input shaft 5 ... Output shaft 6,7 ... Constant speed machine 8 ... Fly wheel 9 ... DC generator 10 ... Oil temperature control unit 12 ... Pipe line 14 ... Oil supply port 15 ... Automatic Transmission 16: Oil drain unit 19, 20: Solenoid valve 23: Test stand 24: Valve body

Claims (2)

[Claims] 1. An automatic transmission test apparatus in which a drive unit for driving an automatic transmission is connected to an input side of the automatic transmission and a power absorbing unit for absorbing power is connected to an output side of the automatic transmission. An oil temperature adjusting unit that adjusts oil for a shift operation of the transmission to a predetermined temperature, an oil pan that supplies the oil to the automatic transmission, and an oil discharging unit that receives oil discharged from the oil pan. A test apparatus for an automatic transmission, comprising: switching means for supplying oil from an oil temperature adjusting section to an oil pan and for sending oil from the oil temperature adjusting section to a drain section during a non-test. 2. A test apparatus for a valve body of an automatic transmission which performs a shift operation by hydraulic pressure by opening and closing a valve, comprising: an oil temperature adjusting section for adjusting oil for a shift operation of the valve body to a predetermined temperature; An oil pan for receiving oil from the oil pan, and an oil drain section for receiving oil from the oil pan,
A valve for an automatic transmission, comprising switching means for supplying oil from an oil temperature control unit to a valve body during a test and sending oil from the oil temperature control unit to a drain unit during a non-test. Body testing equipment.