JPS6246066A - Oil quantity managing device for automatic speed change gear - Google Patents

Abstract

PURPOSE:To make possible to charge an approriate quantity of hydraulic oil in accordance with a detected temperature, by using a nozzle including an inner cylinder which is slidable relative to an outer cylinder and which is provided at its front end with a temperature sensor. CONSTITUTION:A worker inserts an inner cylinder 5 into an oil charge pipe 2 in an automatic speed change gear 1 until a stopper 8 on a nozzle 3 abuts against the opening end of the oil charge pipe 2. After setting the nozzle 3, when a solenoid valve 21 is opened, hydraulic oil is sucked and recovered into a recovery rank 19 under vacuum action in the recovery tank 19. When air is sucked into through the front end of the nozzle 3, a vacuum switch 22 turned on to close the solenoid valve 21. A control device 17 computes the quantity of oil to be replenished in accordance with a temperature detected by a temperature sensor 14, and gives an instruction concerning a stroke to a pump 19. Solenoid valves 28, 34, 33 are opened to operate an air cylinder by an amount corresponding to the stroke instruction so that the replenishment is carried out.

Description

[Detailed Description of the Invention] Industrial Application Field This invention is applicable to eyes! @In the assembly or inspection process of a car, the equipment to manage the VJ transmission Q production 1 oil 1 uniform layer + tK
related.

For example, in the self-control transmission installed in zero-traffic technology automobiles, there is a
Published by Sankaido on the 5th) 0178P (Q5゜4.5 kl It is also disclosed in the shipping inspection section.Inspections are conducted before passing on to the next process and at the time of shipment.In particular, the f411 Vc that is assembled into a vehicle is - B0 hydraulic oil? It is necessary to perform an actual test on the transmission alone with light leakage, so it is necessary to drain the hydraulic oil before the test and then proceed to the assembly process.
For J1, the color removal of the hydraulic oil was not complete, and even after the assembly process, the hydraulic oil from the trial M remained in the fllB machine, and this residual oil was often not constant. .

Therefore, even if the ``TV hydraulic oil k'' Ffi term is set to a constant value again after it is assembled into an f-speed Isogee vehicle, the
It is difficult to explain W in words.

1, depending on the oil level, the IT side pipe is idling after the engine warms up! 11 (The oil temperature inside the transmission is generally 50 to 80'C (0 state), so depending on the warm + Sυ state, it may not be correct.
This means that the oil level will drop.

Since there are many unstable factors in this process, conventionally the following method has been used to manage the hydraulic oil pupil to an appropriate amount.

That is, after the vehicle warms up and runs, the operator measures the oil level seven times by inserting a level gauge into the oil level gauge, and then inserts a thermometer such as a thermocouple from the level gauge extension to measure the oil temperature. Then, based on the measurement and the oil temperature and oil temperature, for example, the first oil is extracted from the conversion chart and the #7 worker judges that the oil should be replenished. Even if we assume that t is a pensho oil child, it is υ.

Problems that the invention aims to solve If the conventional method is used, it relies on the company worker to perform everything from deciding which oil cap to refill or drain to actually refilling or draining the hydraulic oil. Due to individual differences, it is difficult to maintain and manage oil at a constant level, and it also requires a large number of man-hours, which places a heavy burden on the workers.

Interstitial point? Means for Solving the Invention The present invention involves a series of operations other than the above. Automated nine oil quantity control system +t? This is what we are trying to provide.

Specifically, it is connected to the oil filling pipe of the automatic transmission, and is slidable against the outer cylinder and the outside of the core.
A nozzle consisting of a cylinder equipped with a temperature sensor at the end, and a recovery tank connected to an empty space. Contains hydraulic oil in the transmission through the nozzle? It includes a recovery circuit that collects oil in a recovery tank, a hydraulic oil tank and a pump in which oil is stored, and operates the transmission according to the temperature detected by the sensor. The nozzle for oil?
A filling circuit is provided for filling the transmission through the filling circuit.

Function In the present invention, since the amount of hydraulic oil remaining in the transmission is not constant as mentioned in Al1, first, the remaining oil is collected in the recovery circuit until it reaches a predetermined level, and the remaining Vr is constantly recovered. Create preliminary conditions such that the oil violet remains constant. As a result, since the hydraulic oil contact t of the transmission is known, the amount of hydraulic oil to be supplemented to the transmission at full power can be determined.

Then, taking into account the temperature Tt of the hydraulic oil remaining in the transmission, the amount of hydraulic oil to be supplemented is corrected to obtain an appropriate oil amount. These normal oils f can be obtained by reading from a data map stored in the control device in advance in accordance with the temperature detected by the temperature sensor.

Therefore, if the value, for example, is given to a discharge pump of the modified type υ and filled with hydraulic oil VCL, the hydraulic oil in the transmission is always maintained at an appropriate level.

Embodiment FIG. 1 and FIG. 2 are diagrams showing a specific embodiment of the present invention.

In FIG. 1, l is an automatic transmission mounted on a vehicle, and 2 is an oil filling via attached to the automatic transmission l.

3 is a nozzle connected to the oil filling pipe JK, and as shown in FIG. 2, this nozzle 3 has a flexible outer @ 4 and inner [3 and V] double-tube structure.

One end of the outer surface 4 is fixed to a support 6, and the other end is fixed to an elastic stopper 8 to a nut 7 shown in FIG.

By applying this stopper 8 to the opening of the oil-filled pipe 2, the inner w15 is inserted into the oil-filling via ``UK'' to prevent dandruff.

Both ends of the cylinder 5 protrude from the end of the outer cylinder 4Q, while sliding against the outer cylinder 4, and one end of the inner cylinder 5 is connected to the recovery passage 18 (described later) at the joint 9. There are n. Also, a push-pull mechanism 10 for sliding the core cylinder 51r with respect to the outer cylinder 4 is provided in a part of the inner cylinder 5. That is, a rack 11 is provided in a part of the cylinder 5,
A pinion 13 that is rotationally driven by a motor 1jK is engaged with this rack 11. Therefore, the insertion length t of the inner wi5 into the oil-filled via 2 can be determined by the operation of the push-pull mechanism IO.

A temperature sensor 14 is attached to the tip of the four bolts 13 (D) as shown in FIG. n.Therefore, m
The output of the degree sensor 14θ is input to a control device 17 mainly composed of a microcomputer R through an amplifier 16Q.

18 is nozzle 3 and recovery tank 19? At the collection path that connects
Pregnant pump 20QJσ9 VC in recovery tank 19 r1
During machining, the temperature is always maintained at a predetermined vK nitrogen level.

21 is a solenoid valve, 22 is a vacuum switch, and including a cjL gear, a recovery circuit 23i is configured.

24 is a filling passage connecting the nozzle 3 and the hydraulic oil tank 25. A predetermined amount of hydraulic oil is stored in the hydraulic oil tank 25r, while it is connected to a pressure source 27 through a pressurization 1 outlet 26 valve, and the pressure inside the tank 25 is increased by 1 in response to the operation of the % solenoid valve J8v. ] It is supposed to be pressed.

29ri air cylinder 11 cylinder 30vr is used to drive the piston main cylinder, pump 29 discharge 1 rule υ chamber 2
96 is connected to the filling passage 24 and has a voltage of up to 29aVc.
υ hydraulic oil in the hydraulic oil tank 25 is temporarily taken in 1'n.
That will happen. 17t, the air cylinder is equipped with a 3° stroke detector 31, and by controlling the Q stroke tI+IIJ to the number given from the control device 17, the pump 29 automatically adjusts the θ discharge oil ? OT variation control is possible. As described above, the filling passage 24, the hydraulic oil tank 25, and the pump 29 constitute the filling circuit 321r.

33,) 14, 3B, and 36rt are also solenoid valves, and the return passage 37 including the IT solenoid valve 35f is provided to collect the oil into the recovery tank 19 and return it to the constant hydraulic oil r hydraulic oil tank 25. It's something that's happening.

The oil amount control device constructed in this way operates in a simple manner.

The operator must ensure that the nozzle 3 (L) stopper 8 is
v Open the oil light filling pipe 2 until it touches the end of the inner surface 5.
Insert the oil pipe jVc into.

When the inner cylinder 5 protrudes from the outer cylinder 4, the length of the inner cylinder 5 is controlled by a push-pull mechanism.
The insertion length of the nozzle 3 for 2 is determined by the stopper 8 [due to machining regulations, the nozzle for 2
vThe insertion depth is always constant.

After the nozzle 30 is set, when the operator operates the start-up operation, the solenoid valve 21 opens, and the hydraulic fluid in the automatic transmission 1 is sucked into the recovery tank 19 and collected by the negative pressure in the recovery tank 19.
L. At this time, the temperature sensor 14 was immersed in hydraulic oil.
Therefore, the warping oil temperature must be measured and the control device d17
Take it into account.

As the recovery of the hydraulic oil in the own WI transmission 8811 progresses and the oil level drops and air is sucked in from the tip of the nozzle 3, the degree of vacuum in the recovery passage 18 including the recovery tank 197 decreases. Is this vacuum level reduced to 0? [Empty switch 22 detects,
Recovery of hydraulic oil when solenoid valve 21 is closed? finish.

Therefore, as long as the insertion depth of the cylinder 5 into the oil filling pipe 2 is constant, the automatic mass speed 41
The hydraulic oil lance left in 1 is constant at the peak.

Next, the control device 17 determines in advance the amount of oil that should be supplemented at 1 t when the hydraulic oil in the transmission 1 is full, based on the amount of oil left in the automatic transmission 1 as shown in the above ml. Although we are aware of this, we have not reconsidered the temperature of the oil remaining in the transmission.

Therefore, the control device 17 determines which oil 1 should be supplemented depending on the temperature detected by the temperature sensor 14 and which corresponds to the warping temperature. calculate.

In other words, as shown in (t) above, nine corrections can be made to the oil amount that is known in advance according to the oil temperature. This is done in advance by controlling the control device 17.
This is done by reading the data map stored in υ memory.

For details, see 1. For example, if the temperature of the hydraulic fluid remaining in an automatic transmission is high, the hydraulic fluid itself expands thermally.
Replenish it with more oil-containing TV. Conversely, when the oil temperature is low, K
It should be refilled with 1 liter less oil-free oil.

Then, the control rIi4 [17 is the supply stroke finger to operate the differential 119 depending on the oil to be supplemented. ? to the air cylinder 30.

Prior to the operation of the air cylinder 311v, the magnetic valves 28 and 34 open, and a portion of the pressurized hydraulic oil in the hydraulic oil tank 25 enters the chamber 29a of the pump la9. Then, when '1tm1B3 is opened, the air cylinder 30 is extended, and the air cylinder 30 is operated by a finger stroke, so that a predetermined amount of hydraulic oil is filled into the nozzle 3', at, and into the automatic transmission l. .

When replenishment of hydraulic oil is completed, push-pull ff1m1 n
is activated, and the cylinder 5r is moved upward in the case where the tip of the cylinder 5r is drawn from the oil level inside the automatic transmission 1.Then, when the solenoid valve 21 opens, the nozzle 3'P is filled into the filling passage 24. The remaining hydraulic oil is collected in the recovery tank 19.

As a result of the above, the oil layer in the automatic transmission 1 becomes constant 'gK, and is maintained and managed at an appropriate tK with no excess or deficiency Q.

The sea bream oil produced in the recovery tank 19θ is returned to the hydraulic oil tank 25 by opening the 35 solenoid valves for further use.

Effects of the Invention The present invention is capable of stabilizing the amount of oil left behind in an automatic pay machine.Firstly, the oil temperature can be measured and the oil temperature determined to be suitable for the oil temperature. It is possible to do this automatically with a working cylinder that injects water, but the amount of oil in the automatic transmission is 0.
In addition to being able to maintain Km, the burden on the worker can be reduced.

4 Drawings oWIi Simple Description Fig. 1 is a circuit diagram showing one embodiment of the present invention γ, Fig. 2 e is a half sectional view of a gonozzle.

l...° own AFM machine, 2... oil filling pipe, 3...
...Nozzle, 4...Outer tube, 5...Cylinder, to...
Push-pull mechanism, 14°°° temperature sensor, 17...
・Ichi 11 Tsukuda device, 18...Recovery passage, 19...Recovery tank, 20...Middle pump, 23...Recovery circuit,
24... Filling passage, 25... Hydraulic oil tank, 29.
... Pump, 3 so... Filling circuit.

2----- Fill with oil μJj7.

3--1-Nonushi death 4-111 drops 5-11 Boiled 14---JJL-! server

Claims (1)

[Claims] (1) A nozzle that is connected to the oil filling pipe of an automatic transmission and is composed of an outer cylinder, an inner cylinder that is slidable relative to the outer cylinder and equipped with a temperature sensor at the tip, and a vacuum source. a recovery circuit including a recovery tank connected thereto and collecting hydraulic oil in the automatic transmission up to a predetermined level into the recovery tank through the nozzle; and a hydraulic oil tank and pump in which hydraulic oil is stored, and detecting the temperature sensor. An oil amount management device for an automatic transmission, comprising: a filling circuit that fills the automatic transmission with an appropriate amount of hydraulic oil depending on the temperature through the nozzle.