KR101619189B1 - Clutch operating unit for auto transmission - Google Patents

Clutch operating unit for auto transmission Download PDF

Info

Publication number
KR101619189B1
KR101619189B1 KR1020100123559A KR20100123559A KR101619189B1 KR 101619189 B1 KR101619189 B1 KR 101619189B1 KR 1020100123559 A KR1020100123559 A KR 1020100123559A KR 20100123559 A KR20100123559 A KR 20100123559A KR 101619189 B1 KR101619189 B1 KR 101619189B1
Authority
KR
South Korea
Prior art keywords
oil
piston
chamber
retainer
clutch
Prior art date
Application number
KR1020100123559A
Other languages
Korean (ko)
Other versions
KR20120062339A (en
Inventor
황진영
Original Assignee
현대자동차 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차 주식회사 filed Critical 현대자동차 주식회사
Priority to KR1020100123559A priority Critical patent/KR101619189B1/en
Publication of KR20120062339A publication Critical patent/KR20120062339A/en
Application granted granted Critical
Publication of KR101619189B1 publication Critical patent/KR101619189B1/en

Links

Images

Landscapes

  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The present invention simplifies the structure by removing the separate electric oil pump and the check valve, and maintains the piston in the standby state until the engine is restarted, thereby preventing the response delay and the shock caused by sudden operation
A plurality of clutch plates are mounted on a retainer and a hub plate is provided with a clutch disc in which a clutch disc is disposed between the clutch plates, as a friction member, in an automatic transmission, an automatic transmission for compressing the clutch plate and the clutch disc, A piston for moving the clutch plate in the axial direction from the inside of the retainer and forming a hydraulic pressure chamber between the retainer and the clutch plate; A stopper ring formed between the piston and the retainer to urge the piston toward the hydraulic chamber side on the opposite side of the hydraulic chamber; An elastic member interposed in the oil pressure chamber to provide an elastic force to the piston; A return member interposed in the decompression chamber and providing an elastic force to the piston; A solenoid valve installed on an oil passage connected to the hydraulic chamber and selectively supplying hydraulic pressure to the hydraulic chamber; A pressure reducing valve connected to the pressure reducing chamber and provided on the pressure reducing passage connected to the oil passage for selectively supplying hydraulic pressure to the pressure reducing chamber; And an oil pump connected to the oil passage and supplying oil stored in the oil tank to the oil passage when the engine is operating.

Description

CLUTCH OPERATING UNIT FOR AUTO TRANSMISSION < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch operation unit for an automatic transmission, and more particularly, to a clutch operation unit for an automatic transmission that simplifies the structure and prevents a shock due to response delay and sudden operation after restarting the engine.

In general, a multi-plate clutch is widely used in an automatic transmission in which a plurality of clutch plates and a plurality of disks are alternately arranged and connected to each other to transmit power, and the multi-plate clutch is normally controlled by a clutch operation unit .

That is, as shown in Fig. 1, the clutch operation unit 1 for an automatic transmission according to the related art is provided with a plurality of clutch plates 5 in the retainer 3, Is applied to actuate the multi-plate clutch in which the clutch disc (9) is disposed via the clutch disc (7).

The clutch operation unit 1 operates at the first stage and includes a piston 13 disposed inside the retainer 3 and forming a hydraulic chamber 11 between the retainer 3 and the piston 13, A return spring 15 in the form of a compression spring which is disposed on the side of the clutch plate 5 opposite to the hydraulic chamber 11 and pushes the piston 13 toward the hydraulic chamber 11 always is attached to the retainer 3 And the stopper ring 17 is provided.

Accordingly, when hydraulic pressure is supplied to the hydraulic chamber 11, the piston 14 advances while overcoming the elastic force of the return spring 18, thereby pressing the clutch plate 6 and the clutch disc 12 to transmit the power .

The oil supplied to the oil pressure chamber 11 is supplied through the operation of a solenoid valve 19 provided on the oil path OL and the oil is supplied from the oil tank 23 through the mechanical oil pump 21 do.

When the engine is stopped and the mechanical oil pump 21 is also stopped, the clutch operation unit 1 of the automatic transmission configured as described above causes all the oil on the oil passage OL to drain, The supply of oil to the oil pan 11 is stopped.

At the same time, the piston 13 is disengaged from the clutch plate 5 and the clutch disc 9 by the return spring 15, and when the engine is restarted, the mechanical oil pump 21 is operated again There is a disadvantage that shock is generated due to response delay and sudden operation of the piston.

In order to solve such a disadvantage, a conventional electric oil pump 25, which is operated by electric power, is additionally mounted at the time of stopping the engine to prevent sudden operation of the piston 13 and response delay upon restart.

However, since the clutch operation unit 1 for a conventional automatic transmission as described above is required to additionally include a separate electric oil pump 25 and a check valve 27 and additionally a control system for controlling the same, There is a problem that the cost is increased and the layout of the structure and the oil passage becomes complicated.

Further, since the viscosity of the oil differs depending on the temperature, the control map of the electric oil pump 25 according to the oil temperature must be newly set and used, complicating the control of the electric oil pump 25.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to solve the above problems by providing a control apparatus for an internal combustion engine which simplifies the structure by removing an electric oil pump and a check valve, So as to prevent the occurrence of a shock due to a response delay and a sudden operation.

In order to achieve the above object, a clutch operation unit for an automatic transmission according to an embodiment of the present invention includes a plurality of clutch plates mounted on a retainer, and a hub having a clutch disc disposed between the clutch plates as a friction member CLAIMS 1. An automatic transmission clutch operation unit for transmitting power by pressing a clutch plate and a clutch disk in an automatic transmission, characterized in that the clutch plate is moved axially from the inside of the retainer, ; A stopper ring formed between the piston and the retainer to urge the piston toward the hydraulic chamber side on the opposite side of the hydraulic chamber; An elastic member interposed in the oil pressure chamber to provide an elastic force to the piston; A return member interposed in the pressure reduction chamber and providing an elastic force to the piston, a solenoid valve installed on the oil passage connected to the hydraulic chamber and selectively supplying hydraulic pressure to the hydraulic chamber, A pressure reducing valve connected to the pressure reducing chamber and provided on the pressure reducing passage connected to the oil passage for selectively supplying hydraulic pressure to the pressure reducing chamber; And an oil pump connected to the oil passage and supplying oil stored in the oil tank to the oil passage when the engine is operated, wherein the elastic member has an elastic force greater than the elastic force of the return member, A seal ring is mounted between the retainer and the stopper ring in order to prevent leakage of the oil flowing into the hydraulic chamber from the inside of the decompression chamber, And a seal ring is mounted on the base.

delete

And the elastic member is composed of a coil spring whose one end is supported inside the retainer and the other end is supported by the piston.

The return member is characterized in that one end is supported by the piston, and the tatter is formed by a coil spring supported by the stopper ring.

delete

delete

And the pressure reducing passage is connected to the oil passage between the solenoid valve and the oil pump.

And a regulating valve for holding the oil supplied from the oil pump at a predetermined pressure is mounted in the oil passage.

As described above, according to the clutch operation unit for an automatic transmission according to the embodiment of the present invention, the elastic member is provided in the hydraulic chamber formed between the piston and the retainer, and when the engine is driven, the return member and the decompression chamber The elastic force of the elastic member is canceled by the inflowing oil pressure. On the contrary, the elasticity of the elastic member is used to maintain the piston in the standby state until the engine is stopped and restarted, thereby preventing the response delay of the piston and the shock caused by sudden operation .

Further, by performing the same function even when the electric oil pump and the check valve, which are conventionally installed separately, are removed, the cost can be reduced by simplifying the structure, and the layout of the oil passage can be simplified.

In addition, since the conventional electric oil pump does not need to control oil temperature, the control logic can be simplified. By operating the piston by the pressure balance using the elastic force and the hydraulic pressure instead of the electric control, reliability of the idle stop & .

1 is a block diagram of a clutch operation unit for an automatic transmission according to the prior art.
2 is a block diagram of a clutch operation unit for an automatic transmission according to an embodiment of the present invention.
3 is an operational state diagram of a clutch operation unit for an automatic transmission according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, It should be understood that various equivalents and modifications may be present.

2 is a block diagram of a clutch operation unit for an automatic transmission according to an embodiment of the present invention.

Referring to the drawings, a clutch operation unit 100 for an automatic transmission according to an exemplary embodiment of the present invention eliminates a separate electric oil pump and a check valve to simplify the configuration, and after the engine is stopped, So as to prevent a response delay and a shock caused by a sudden operation.

This clutch operation unit 100 is applied to operate the one-stage clutch.

To this end, the clutch operation unit 100 for an automatic transmission according to the embodiment of the present invention includes a plurality of clutch plates 103 mounted on the retainer 101, In which the clutch plate 103 and the clutch disc 107 are pressed to transmit the power in an automatic transmission that holds a multi-plate clutch in which the disc 107 is disposed as a friction member.

2, the clutch actuating unit 100 for an automatic transmission according to the embodiment of the present invention includes a piston 110, a stopper ring 120, an elastic member 130, a return member 140 ), A solenoid valve 150, a pressure reducing valve 160, and an oil pump 170.

First, the piston 110 moves the clutch plate 103 in the axial direction from the inside of the retainer 101, and forms a hydraulic chamber 111 between the retainer 101 and the clutch plate 103.

The piston 110 has a first seal ring 113 between the retainer 101 and the retainer 101 in order to prevent the oil flowing into the hydraulic chamber 111 from leaking from the inside of the retainer 101. [ ).

The stopper ring 120 is installed between the piston 110 and the retainer 101 so as to push the piston 110 from the opposite side of the oil pressure chamber 111 toward the oil pressure chamber 111, .

The stopper ring 120 is mounted with a second seal ring 123 between the stopper ring 120 and the piston 110 to prevent the oil flowing into the decompression chamber 121 from leaking.

In the present embodiment, the elastic member 130 is interposed in the hydraulic chamber 111 to provide an elastic force to the piston 110.

It is preferable that the elastic member 130 includes a coil spring whose one end is supported inside the retainer 101 in the hydraulic chamber 111 and the other end is supported by the piston 110.

The return member 140 is interposed in the decompression chamber 121 to provide an elastic force to the piston 110.

It is preferable that the return member 140 includes a coil spring whose one end is supported by the piston 110 in the decompression chamber 121 and the tatter is supported by the stopper ring 120.

The elastic member 130 has an elastic force greater than the elastic force of the return member 140 so that when the oil does not flow into the decompression chamber 121, (110) is brought into contact with the clutch plate (105) and kept in a standby state.

On the contrary, when the oil flows into the decompression chamber 121, the hydraulic pressure introduced into the return member 140 and the decompression chamber 121 cancels the elastic force of the elastic member 140, And is pushed toward the chamber 111 side.

The solenoid valve 150 is installed on the oil passage OL connected to the oil pressure chamber 111 and is selectively operated under the control of a TCU (Transmission Control Unit) .

The decompression valve 160 is connected to the decompression chamber 121 and is disposed on a decompression line DL connected to the oil passage OL so as to be connected to the decompression chamber 121 And selectively supplies the hydraulic pressure.

The oil pump 170 is connected to the oil line O.L to supply the oil stored in the oil tank 171 to the oil line O.L during operation of the engine.

Here, the oil pump 170 is a mechanical oil pump operated by an engine.

Here, the pressure reducing flow path (D.L) is connected to the oil path (O.L) between the solenoid valve (150) and the oil pump (170).

A regulating valve 180 is installed in the oil passage OL to maintain the oil supplied from the oil pump 170 at a predetermined pressure. The regulating valve 180 is disposed inside the oil passage OL, The oil pressure is always kept constant.

Hereinafter, the operation and operation of the clutch operation unit 100 for an automatic transmission according to the embodiment of the present invention will be described in detail.

3 is an operational state diagram of a clutch operation unit for an automatic transmission according to an embodiment of the present invention.

First, when the engine is driven, the oil in the oil tank 171 is supplied through the oil passage O.L from the oil pump 170 operated by the engine as shown in S1 of Fig.

The solenoid valve 150 is controlled by the TCU to selectively supply the hydraulic pressure to the hydraulic chamber 111 to operate the piston 110 so that the clutch plate 103 The clutch disc 107 is pressed to transmit the driving force.

When the piston 110 is not operated, the solenoid valve 150 is closed and the hydraulic pressure supply to the hydraulic chamber 110 is stopped and drained. When the pressure reducing valve 160 is opened, (121).

The hydraulic pressure introduced into the decompression chamber 121 and the elastic force of the return member 140 cancel the elastic force of the elastic member 130 thereby pushing the piston 110 toward the hydraulic chamber 111.

That is, when the engine is driven, the piston 110 is kept pushed to the oil pressure chamber 111 side. When the speed change stage is to operate in the D1 direction, the solenoid valve 150 is opened by the TCU, As the hydraulic pressure is supplied to the chamber 111, the clutch plate 103 and the clutch disc 107 are pressed to transmit the driving force.

On the other hand, when the engine is stopped, the operation of the oil pump 170 connected to the engine is stopped and the oil supply to the oil line O.L is stopped as shown in S2 of FIG.

Accordingly, the oil in the oil pressure chamber 111 and the inside of the pressure-reduction chamber 121 is drained to the pressure-reducing passage D.L and the oil passage O.L.

At this time, since the elastic force of the elastic member 130 is greater than the elastic force of the return member 140, the piston 110 is pushed toward the clutch plate 103.

Then, the piston 110 compresses the clutch plate 103 and the clutch disc 107 to maintain the standby state before the step D1 is operated.

In this state, when the engine is restarted and the stage D1 is operated, the driving force can be transmitted without delay in response to the oil supply.

That is, the clutch operation unit 100 according to the present embodiment keeps the piston 110 constantly in the standby state due to the elastic force of the elastic member 140, even when the engine is stopped, Thereby preventing sudden operation of the piston.

On the other hand, the clutch operation unit 100 for an automatic transmission according to the present embodiment is equally applicable to an automatic transmission brake.

Therefore, when the clutch operation unit 100 for an automatic transmission according to the embodiment of the present invention configured as described above is applied, the elastic member (not shown) is inserted into the hydraulic chamber 111 formed between the piston 110 and the retainer 101 The elastic force of the elastic member 130 is canceled by the oil pressure introduced into the return chamber 140 and the decompression chamber 121 through the pressure reducing valve 160. On the contrary, By maintaining the piston 110 in the standby state by using the elastic force of the elastic member 140 after stopping and restarting, it is possible to prevent the response delay of the piston 110 and the shock caused by sudden operation.

Further, by performing the same function even when the electric oil pump and the check valve, which are conventionally installed separately, are removed, the cost can be reduced by simplifying the structure and the layout of the oil passage O.L can be simplified.

In addition, the control logic can be simplified by controlling the oil temperature of the conventional electric oil pump, and the piston 110 can be operated by the pressure balance using the elastic force and the oil pressure instead of the electric control, The reliability of the function can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

101 ... retainer 103 ... clutch plate
105 ... hub 107 ... clutch disc
110 ... piston 111 ... hydraulic chamber
113 ... first seal ring 120 ... stopper ring
121 ... Decompression chamber 123 ... Second seal ring
130 ... elastic member 140 ... return member
150 ... Solenoid valve 160 ... Pressure reducing valve
170 ... oil pump 171 ... oil tank
180 ... Regulating valve OL .. Oil flow
DL .. Pressure reducing flow

Claims (8)

A plurality of clutch plates are mounted on a retainer and a hub plate is provided with a clutch disc in which a clutch disc is disposed between the clutch plates, as a friction member, in an automatic transmission, an automatic transmission for compressing the clutch plate and the clutch disc, In the clutch operation unit for a vehicle,
A piston which axially moves the clutch plate inside the retainer and forms a hydraulic chamber between the retainer and the retainer;
A stopper ring formed between the piston and the retainer to urge the piston toward the hydraulic chamber side on the opposite side of the hydraulic chamber;
An elastic member interposed in the oil pressure chamber to provide an elastic force to the piston;
A return member interposed in the decompression chamber and providing an elastic force to the piston;
A solenoid valve installed on an oil passage connected to the hydraulic chamber and selectively supplying hydraulic pressure to the hydraulic chamber;
A pressure reducing valve connected to the pressure reducing chamber and provided on the pressure reducing passage connected to the oil passage for selectively supplying hydraulic pressure to the pressure reducing chamber; And
And an oil pump connected to the oil passage and supplying the oil stored in the oil tank to the oil passage when the engine is operated,
Wherein the elastic member has an elastic force greater than an elastic force of the return member,
The piston is mounted with a seal ring between the retainer and the retainer so as to prevent the oil flowing into the hydraulic chamber from leaking from the inside of the retainer,
Wherein the stopper ring is mounted with a seal ring between the stopper ring and the piston to prevent leakage of the oil flowing into the decompression chamber. delete The method according to claim 1,
The elastic member
Wherein one end is supported inside the retainer and the other end is made up of a coil spring supported by the piston. The method according to claim 1,
The return member
And a coil spring having one end supported by the piston and the other end supported by the stopper ring. delete delete The method according to claim 1,
The reduced-
And the oil passage is connected to the oil passage between the solenoid valve and the oil pump. The method according to claim 1,
The oil passage
And a regulating valve for holding the oil supplied from the oil pump at a predetermined pressure is mounted.
KR1020100123559A 2010-12-06 2010-12-06 Clutch operating unit for auto transmission KR101619189B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100123559A KR101619189B1 (en) 2010-12-06 2010-12-06 Clutch operating unit for auto transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100123559A KR101619189B1 (en) 2010-12-06 2010-12-06 Clutch operating unit for auto transmission

Publications (2)

Publication Number Publication Date
KR20120062339A KR20120062339A (en) 2012-06-14
KR101619189B1 true KR101619189B1 (en) 2016-05-18

Family

ID=46683308

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100123559A KR101619189B1 (en) 2010-12-06 2010-12-06 Clutch operating unit for auto transmission

Country Status (1)

Country Link
KR (1) KR101619189B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101393764B1 (en) * 2012-07-26 2014-05-12 현대 파워텍 주식회사 Piston control unit for clutch piston having multiple chamber
CN107939857A (en) * 2017-12-22 2018-04-20 吉孚汽车技术(浙江)有限公司 Start and stop for automatic transmission pump

Also Published As

Publication number Publication date
KR20120062339A (en) 2012-06-14

Similar Documents

Publication Publication Date Title
US8572956B2 (en) Hydraulic pressure supply device of automatic transmission
JP6173321B2 (en) Check valve assembly for clutch and clutch for transmission
JP5524980B2 (en) Proportional pressure control valve
US10066748B2 (en) Vehicle parking lock device
US10100924B2 (en) Hydraulic control arrangement for an automatic transmission
JP4775639B2 (en) Prime mover stop system
US9266519B2 (en) Hydraulic control device
KR101466607B1 (en) Electro-hydraulic clutch system
US20090241531A1 (en) Hydraulic control device for starting device
US8986164B2 (en) Hydraulic pressure control device and vehicle control device
US7935025B1 (en) Methods and systems for assisted direct start control
KR102188980B1 (en) A shut-off valve in a hydraulic disc coupling for an awd vehicle
US10408346B2 (en) Parking lock apparatus
US9939061B2 (en) Hydraulic control apparatus
KR101619189B1 (en) Clutch operating unit for auto transmission
CN107923522B (en) Hydraulic system of automatic transmission
US8858394B2 (en) Apparatus and method for automated transmission clutch fill during engine start-stop operation
JP2007120720A (en) Hydraulic control device
US20070004548A1 (en) Compliance-on-demand for vehicle transmission clutch
KR101749821B1 (en) Dual Pump type Hydraulic Control System and Automatic Transmission thereof
US6948524B1 (en) Pressure holding apparatus for a torque-transmitting mechanism
US10641348B2 (en) Popoff valve in hydraulic arrangement for multi-clutch assembly
JP3692252B2 (en) Hydraulic device and auto clutch device for vehicle
KR101734278B1 (en) Hydraulic control system of automatic transmission for idle stop go vehicles
CN113007337A (en) Hydraulic control system of speed changer

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190429

Year of fee payment: 4