KR101684528B1 - A hydraulic control apparatus for hydraulic torque converter - Google Patents

A hydraulic control apparatus for hydraulic torque converter Download PDF

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Publication number
KR101684528B1
KR101684528B1 KR1020150089609A KR20150089609A KR101684528B1 KR 101684528 B1 KR101684528 B1 KR 101684528B1 KR 1020150089609 A KR1020150089609 A KR 1020150089609A KR 20150089609 A KR20150089609 A KR 20150089609A KR 101684528 B1 KR101684528 B1 KR 101684528B1
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KR
South Korea
Prior art keywords
pressure
port
torque converter
hydraulic
control
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KR1020150089609A
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Korean (ko)
Inventor
신용욱
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현대자동차 주식회사
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Publication of KR101684528B1 publication Critical patent/KR101684528B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/14—Control of torque converter lock-up clutches
    • F16H61/143—Control of torque converter lock-up clutches using electric control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
    • F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

Disclosed is a hydraulic control circuit for a torque converter. According to an embodiment of the present invention, the hydraulic control circuit for a torque converter having a supply passage and a discharge passage to supply and discharge a working fluid pressure in the torque converter and a hydraulic chamber passage to discharge and supply a coupling fluid pressure to a coupling hydraulic chamber of a lockup clutch in the torque converter comprises: a torque converter control valve to supply a stably controlled fluid pressure as a working fluid pressure of the torque converter; a lockup signal and switch valve which is controlled by a control pressure of a solenoid valve and a working fluid pressure and a discharge fluid pressure of the torque converter, controls and supplies a fluid pressure supplied at a constant fluid pressure from any valve in a hydraulic circuit, and supplies the discharge fluid pressure of the torque converter as a control pressure of the torque converter control valve; and a lockup pressure control valve to control a D range pressure by the control pressure supplied from the lockup signal and switch valve to supply the D range pressure to the coupling hydraulic chamber.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hydraulic control circuit for a torque converter,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hydraulic control circuit for a torque converter applied to an automatic transmission for a vehicle, and more particularly, to a torque control system for a torque converter that can be controlled according to an internal pressure change of a torque converter, To a hydraulic control circuit of a converter.

A torque converter applied to a vehicle has a disadvantage in that it can not transmit 100% of torque as a conventional friction clutch because the torque converter transmits the torque by rotating the turbine with the fluid as a medium.

As a result, the torque converter has a lock-up clutch that can mechanically transmit torque directly in the high-speed range.

The lockup clutch is disposed in a space formed between a front cover serving as an input side rotary member of the torque converter and a turbine serving as an output side rotary member and is operated and controlled by a hydraulic pressure supplied to a hydraulic chamber for engaging the lock- Operation control is performed.

The hydraulic pressure supplied to the lock-up clutch engagement hydraulic chamber is controlled by a torque converter control valve or a linear solenoid valve. In recent years, direct control using a linear solenoid valve is generally performed.

However, when the lock-up clutch is controlled using the linear solenoid valve as described above, the operation of the lock-up clutch is controlled regardless of the oil pressure inside the torque converter. Therefore, when the oil pressure inside the torque converter is large, The stability of the lock-up clutch control is deteriorated.

An embodiment of the present invention intends to provide a hydraulic control circuit of a torque converter that improves the engagement responsiveness of a lock-up clutch by controlling the operating oil pressure of the lock-up clutch substantially reflecting the supply and discharge hydraulic pressures of the torque converter.

In one or more embodiments of the present invention, a supply and discharge flow path for supplying and discharging working hydraulic pressure into and from the torque converter, and a hydraulic chamber flow path for supplying and discharging hydraulic fluid for engagement to the hydraulic pressure chamber of the lockup clutch in the torque converter The torque converter control valve comprising: a torque converter control valve for supplying a stably controlled hydraulic pressure to the working oil pressure of the torque converter; The hydraulic pressure of the torque converter is controlled by the control pressure of the solenoid valve and the working oil pressure and the discharge oil pressure of the torque converter while controlling the hydraulic pressure supplied from a certain hydraulic pressure from a certain valve in the hydraulic circuit, A lock-up signal-and-switch valve for supplying a pressure to the valve; Up control valve for controlling the D range pressure by the control pressure supplied from the lock-up signal and switch valve and supplying the D range pressure to the tightening hydraulic chamber.

The torque converter control valve may basically be configured to form a differential pressure, to supply the residual oil pressure to the working oil pressure of the torque converter, and to reduce the torque converter supply oil pressure by feedback of the torque converter discharge oil pressure during the engagement control of the lock- have.

The valve body constituting the torque converter control valve may include a first port receiving line pressure; A second port for supplying the hydraulic pressure supplied to the first port to the working hydraulic pressure of the torque converter; A third port receiving a part of the hydraulic pressure supplied to the second port as a control pressure; A fourth port receiving a torque converter discharge hydraulic pressure from the lock-up signal and switch valve as a control pressure; And a fifth port for discharging the hydraulic pressure supplied to the first port.

Further, the valve body constituting the lock-up signal and switch valve may include a first port receiving the control pressure of the solenoid valve; A second port connected to the discharge passage so that the discharge hydraulic pressure of the torque converter can be supplied; A third port for supplying a hydraulic pressure supplied to the second port to a fourth port of the torque converter control valve; A fourth port connected to receive a part of the hydraulic pressure supplied to the operating oil pressure of the torque converter; A fifth port receiving a hydraulic pressure supplied to the fourth port; A sixth port disposed adjacent to the first port and supplied with the control pressure of the hydraulic pressure of the fifth port; A seventh port for receiving hydraulic pressure from the reducing valve; An eighth port for supplying the hydraulic pressure supplied to the seventh port to the control pressure of the lock-up pressure control valve; And a ninth port receiving a part of the hydraulic pressure supplied to the eighth port from the opposite side of the first, second and sixth ports as a control pressure.

The valve body constituting the lock-up pressure control valve may include a first port receiving a control pressure from the lock-up signal and switch valve; A second port which is supplied with hydraulic pressure supplied to the tightening hydraulic chamber of the lockup clutch; A third port for supplying the hydraulic pressure supplied to the second port to the engaging hydraulic chamber of the lock-up clutch; And a fourth port receiving a control pressure from a portion of the hydraulic pressure supplied from the opposite side of the first port to the third port so that the hydraulic pressure supplied to the third port is selectively discharged through the discharge port Lt; / RTI >

Also. The solenoid valve may be configured as an normally closed type.

An embodiment of the present invention is a hydraulic control circuit for controlling a lockup clutch of a torque converter having a three-way private room structure, in which a clamping pressure supply passage of a lockup clutch is independently connected to another flow passage, By controlling the lockup pressure control valve with the control pressure of the lockup signal and switch valve that reflects the hydraulic pressure, the operating hydraulic pressure of the lockup clutch can be controlled.

Further, when controlling the lock-up clutch, the torque converter control valve may be supplied with the discharge oil pressure of the torque converter as a control pressure to lower the supply oil pressure of the torque converter.

That is, if the supply pressure of the torque converter is lowered as described above, the tightening pressure of the lockup clutch can be lowered, and the tightening responsiveness of the lockup clutch can be improved.

1 is a half sectional view of a three-way separate torque converter applied to a hydraulic control circuit of a torque converter according to an embodiment of the present invention.
2 is a hydraulic control circuit diagram of a torque converter according to an embodiment of the present invention.
3 is a configuration diagram of a torque converter control valve applied to the hydraulic control circuit of the torque converter according to the embodiment of the present invention.
4 is a block diagram of a lockup signal and switch valve applied to the hydraulic control circuit of the torque converter according to the embodiment of the present invention.
5 is a block diagram of a lockup pressure control valve applied to the hydraulic control circuit of the torque converter according to the embodiment of the present invention.

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

In order to clearly illustrate the embodiments of the present invention, parts that are not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the entire specification.

In the following description, the names of the components are denoted by the first, second, etc. in order to distinguish them from each other because the names of the components are the same and are not necessarily limited to the order.

1 is a half sectional view of a three-way private torque converter to which the present invention is applied.

Referring to Fig. 1, a torque converter TC includes a front cover 2, an impeller 4, a turbine 6, and a stator 8.

The front cover 2 is connected to a crankshaft (not shown) of the engine and rotates together with the engine.

The impeller 4 is connected to the front cover 2 and rotates together.

The turbine 6 is arranged to face the impeller 4 and drives the input shaft of the transmission through the turbine hub 10 while being rotated by the fluid supplied from the impeller 4.

The stator 8 is disposed between the impeller 4 and the turbine 6 so as to be rotatable only in one direction by a one-way clutch to change the flow of the fluid (oil for automatic transmission) from the turbine 6, 4).

The stator 8 has the same center of rotation as the front cover 2. [

The fluid is supplied through the supply passage (12) and discharged through the discharge passage (14).

Inside the torque converter TC, a lock-up clutch LUC used as a means for directly connecting the engine and the transmission is disposed between the front cover 2 and the turbine 6. [

The lockup clutch LUC holds a drum 16 fixed to the front cover 2 and a clutch plate 18 and a retaining plate 20 supported by the drum 16.

The lockup clutch LUC also has a boss 24 connected to the turbine 6 via a damper assembly 22 fixed to the turbine 6 and a clutch disc 26).

The lockup clutch LUC holds the piston 28 on one side of the clutch plate 18, that is, the inside of the front cover 2, and the clutch plate 18 and the clutch plate 18 are closed by the pressure of the piston 28, The clutch disc 26 is squeezed and the lock-up clutch LUC is engaged.

A hydraulic oil chamber 30 is formed between the piston 24 and the front cover 2. When the oil pressure is supplied to the hydraulic oil chamber 30 through the hydraulic oil passage 32, When the lockup clutch LUC is fastened while moving to the right in this figure and the oil pressure of the lockup hydraulic chamber 30 is discharged through the hydraulic oil passage 32, the engagement state of the lockup clutch LUC is released.

2 is a hydraulic control circuit diagram of a torque converter according to an embodiment of the present invention.

2, the torque converter TC includes a torque converter control valve (TCCV), a lockup signal and switch valve (LU SSV), a lockup pressure control valve (LU PCV ), And solenoid valve (SOL).

That is, the torque converter control valve (TCCV) stably controls the line pressure supplied from a line regulator valve (not shown) to be supplied directly to the operating oil pressure of the torque converter TC.

The lock-up signal and switch valve (LU SSV) generates a signal pressure of the lockup pressure control valve (LU PCV) while being controlled by the control pressure of the solenoid valve (SOL) and the working oil pressure and the discharge oil pressure of the torque converter And switches the oil passage so that a part of the torque converter discharge hydraulic pressure is fed back to the torque converter control valve (TCCV) during the engagement control of the lock-up clutch LUC.

The lockup pressure control valve (LU PCV) controls the hydraulic pressure supplied to the lockup hydraulic chamber (30) of the lockup clutch (LUC) while being controlled by the control pressure supplied from the lockup signal and switch valve valve (LU SSV) .

2, the hydraulic pressure supplied through the lock-up pressure control valve (LU PCV) to the coupling fluid chamber (30) of the lock-up clutch (LUC) is D range pressure. .

3 is a configuration diagram of a torque converter control valve applied to the hydraulic control circuit of the torque converter according to the embodiment of the present invention.

3, the torque converter control valve TCCV is basically supplied with line pressure and supplies the remaining oil pressure to the torque converter TC. At the same time, the torque converter discharge hydraulic pressure during the engagement control of the lock-up clutch LUC is feedback And is configured to lower the torque converter supply hydraulic pressure.

To this end, the torque converter control valve (TCCV) comprises a valve body and a valve spool, which has five ports (101-105).

The first port 101 is connected to the discharge port of the line regulator valve and is supplied with the line pressure. The second port 102 is connected to the first port 101 through the operation of the torque converter TC And the third port 103 receives a part of the hydraulic pressure supplied to the second port 102 as a control pressure and the fourth port 104 receives the lockup signal and switch valve LU SSV And the fifth port 105 discharges the hydraulic pressure supplied to the first port 101. The hydraulic pressure supplied to the first port 101 is supplied to the first port 101 and the second hydraulic pressure.

The valve spool is installed in the valve body and has a control pressure supplied to the third port 103 and the fourth port 104 and a control pressure supplied to the opposite side of the third and fourth ports 103, The hydraulic pressure is controlled while adjusting the opening area between the first port 101 and the fifth port 105 while moving left and right according to the magnitude of the elastic force of the first port 101 and the fifth port 105. [

The elastic member 106 is not necessarily applied thereto, but may be omitted if necessary.

The oil pressure controlled by the torque converter control valve (TCCV) and discharged to the second port 102 may be supplied as cooling and lubrication oil pressure.

4 is a block diagram of a lockup signal and switch valve applied to the hydraulic control circuit of the torque converter according to the embodiment of the present invention.

4, the lock-up signal and switch valve LU SSV is controlled by the control pressure of the solenoid valve SOL and the operating oil pressure and discharge oil pressure of the torque converter TC, Of the signal pressure.

To this end, the lockup signal and switch valve (LU SSV) comprises a valve body and a valve spool, which has nine ports (201 to 209).

The first port 201 is connected to receive the control pressure of the solenoid valve SOL and the second port 202 is connected to the discharge passage 14 and the discharge passage 14 so that the discharge hydraulic pressure of the torque converter TC can be supplied. And the third port 203 supplies the hydraulic pressure supplied to the second port 202 to the fourth port 104 of the torque converter control valve TCCV.

The fourth port 204 is connected to receive a part of the hydraulic pressure supplied to the working oil pressure of the torque converter TC, and the fifth port 205 is connected to the fourth port 204, And the sixth port 206 is disposed adjacent to the first port 201 and receives the hydraulic pressure of the fifth port 205 as a control pressure.

The seventh port 207 receives the control pressure from the reducing valve RDV and the eighth port 208 connects the hydraulic pressure supplied to the seventh port 207 to the lockup pressure control valve LU PCV And the ninth port 209 supplies a part of the hydraulic pressure supplied to the eighth port 208 from the opposite side of the first, second, and sixth ports 201, 202, To be supplied with the control pressure.

The valve spool is installed in the valve body and has a control pressure supplied to the first, second and sixth ports 201, 202 and 206, and a ninth port 209 acting on the opposite side of the control pressure The hydraulic pressure supplied to the lockup pressure control valve (LU PCV) through the eighth port (208) is controlled by controlling the opening area between the seventh port (207) and the eighth port (208) do.

The reduction valve RDV is applied to the hydraulic control system of the automatic transmission to reliably control the line pressure delivered from the line regulator valve to provide a source pressure of each solenoid valve such as the solenoid valve SOL. Lt; / RTI >

In the above description, the seventh port 207 is described as being supplied with the hydraulic pressure supplied from the reducing valve RDV. However, the seventh port 207 is not limited thereto and may be any hydraulic pressure that is controlled and supplied from a certain valve in the hydraulic circuit .

5 is a block diagram of a lockup pressure control valve applied to the hydraulic control circuit of the torque converter according to the embodiment of the present invention.

5, the lock-up pressure control valve LU PCV is controlled by a control pressure supplied from the lock-up signal and switch valve LU SSV, and is connected to the hydraulic pressure chamber 30 of the lock-up clutch LUC, To be supplied or discharged.

To this end, the lockup pressure control valve (LU PCV) comprises a valve body and a valve spool, which has four ports (301-304).

The first port 301 is connected to receive the control pressure from the lockup signal and switch valve LU SSV and the second port 302 is connected to receive the D range pressure.

The third port 303 is connected to supply the hydraulic pressure supplied to the second port 302 to the lockup clutch LUC and the fourth port 304 is connected to the lockup clutch LUC on the opposite side of the first port 301, 3 port 303 to be supplied with the control pressure.

The valve spool includes a control pressure of a lockup signal and switch valve (LU SSV) built in the valve body and supplied to the first port (301), and a control pressure of the fourth port The valve 304 moves to the left and right according to the control pressure so that the flow can be switched.

That is, when the valve spool is moved to the right in the drawing, the second port 302 and the third port 303 are connected to each other to connect the hydraulic pressure supplied to the second port 302 to the hydraulic pressure of the lockup clutch LUC And is supplied to the air flow path 32.

On the contrary, when the valve spool is moved to the left in the drawing, the second port 302 is closed, and the third port 303 is connected to the discharge port EX, Is discharged through the discharge port (EX).

In this case, the solenoid valve SOL is of a normally closed type and does not generate a control pressure when no power is applied.

In the above, the line pressure refers to a hydraulic pressure supplied from a line regulator valve (not shown), and the D range pressure refers to a hydraulic pressure supplied from a manual valve for converting the range into the D range.

In the oil pressure control circuit of the torque converter according to the embodiment of the present invention configured as described above, when the lockup clutch LUC is not operated, the oil pressure controlled by the torque converter control valve (TCCV) (12), and the hydraulic pressure discharged through the discharge passage (14) is circulated to the cooling and lubrication oil pressure.

When the lockup clutch LUC is operated, the hydraulic pressure controlled by the lockup pressure control valve LU PCV is controlled by the control pressure supplied from the lockup signal and switch valve (LU SSV) Up clutch LUC while being supplied to the engaging hydraulic chamber 26 of the lock-up clutch LUC through the lock-up clutch 32. [

At this time, a part of the discharge hydraulic pressure of the torque converter TC is fed back to the fourth port 404 of the torque converter control valve TCCV by the switching of the path of the lock-up signal and switch valve LU SSW, .

Up control valve (LU PCV) is controlled by the control pressure of the lockup signal and switch valve (LU SSV) controlled by the supply and discharge hydraulic pressure of the torque converter (TC) and the control pressure of the solenoid valve (SOL) To control the operating oil pressure of the lock-up clutch LUC.

Accordingly, the hydraulic control circuit of the torque converter according to the embodiment of the present invention controls the operating oil pressure of the lock-up clutch LUC according to the internal pressure of the torque converter TC, thereby improving the engaging response of the lock-up clutch LUC You can.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Includes all changes to the scope permitted.

TCCV ... Torque converter control valve
LU PCV ... Lockup pressure control valve
LU SSV ... Lockup signal and switch valve
LUC ... lockup clutch

Claims (8)

A torque converter having a supply flow path and a discharge flow path for supplying and discharging working oil pressure into and from a torque converter, and a hydraulic chamber flow path for supplying and discharging a hydraulic pressure for engagement to a clamping hydraulic chamber of a lockup clutch in a torque converter,
A torque converter control valve for supplying a stably controlled hydraulic pressure to the working oil pressure of the torque converter;
The hydraulic pressure of the torque converter is controlled by the control pressure of the solenoid valve and the working oil pressure and the discharge oil pressure of the torque converter while discharging the hydraulic pressure flowing from the reducing valve in the hydraulic circuit and supplying the discharge oil pressure of the torque converter as the control pressure of the torque converter control valve Wherein the valve body has a first port receiving the control pressure of the solenoid valve; A second port connected to the discharge passage so that the discharge hydraulic pressure of the torque converter can be supplied; A third port for supplying the hydraulic pressure supplied to the second port to one port of the torque converter control valve; A fourth port connected to receive a part of the hydraulic pressure supplied to the operating oil pressure of the torque converter; A fifth port receiving a hydraulic pressure supplied to the fourth port; A sixth port disposed adjacent to the first port and supplied with the control pressure of the hydraulic pressure of the fifth port; A seventh port for receiving hydraulic pressure from the reducing valve; An eighth port for supplying the hydraulic pressure supplied to the seventh port to the control pressure of the lock-up pressure control valve; And a ninth port for receiving a part of the hydraulic pressure supplied to the eighth port from the opposite side of the first, second and sixth ports as a control pressure;
A lock-up pressure control valve for controlling the hydraulic pressure discharged from the lock-up signal and switch valve to a D-range pressure by a control pressure and supplying the D-range pressure to the clamping hydraulic chamber;
And the hydraulic control circuit of the torque converter. The method according to claim 1,
The torque converter control valve
The hydraulic control circuit of the torque converter is configured to receive the rearal pressure basically and supply the residual hydraulic pressure to the working oil pressure of the torque converter and to lower the torque converter supply oil pressure by feedback of the torque converter discharge oil pressure during the engagement control of the lock- . The method according to claim 1,
The valve body constituting the torque converter control valve
A first port for receiving line pressure;
A second port for supplying the hydraulic pressure supplied to the first port to the working hydraulic pressure of the torque converter;
A third port receiving a part of the hydraulic pressure supplied to the second port as a control pressure;
A fourth port receiving a torque converter discharge hydraulic pressure from the lock-up signal and switch valve as a control pressure; And
And a fifth port for discharging the hydraulic pressure supplied to the first port. delete delete The method according to claim 1,
The valve body constituting the lockup pressure control valve
A first port receiving a control pressure from the lock-up signal and switch valve;
A second port which is supplied with hydraulic pressure supplied to the tightening hydraulic chamber of the lockup clutch;
A third port for supplying the hydraulic pressure supplied to the second port to the engaging hydraulic chamber of the lock-up clutch; And
And a fourth port receiving a control pressure from a portion of the hydraulic pressure supplied from the opposite side of the first port to the third port,
And the hydraulic pressure supplied to the third port is selectively discharged through the discharge port. The method according to claim 6,
The second port
D range hydraulic pressure control circuit of the torque converter configured to be supplied with the D range pressure. The method according to claim 1,
The solenoid valve
A hydraulic control circuit of a torque converter comprising an normally closed type.
KR1020150089609A 2015-06-24 2015-06-24 A hydraulic control apparatus for hydraulic torque converter KR101684528B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150089609A KR101684528B1 (en) 2015-06-24 2015-06-24 A hydraulic control apparatus for hydraulic torque converter

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Application Number Priority Date Filing Date Title
KR1020150089609A KR101684528B1 (en) 2015-06-24 2015-06-24 A hydraulic control apparatus for hydraulic torque converter

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KR101684528B1 true KR101684528B1 (en) 2016-12-20

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011021695A (en) * 2009-07-16 2011-02-03 Aisin Seiki Co Ltd Hydraulic pressure control device of fluid transmission device
US20110168509A1 (en) * 2010-01-11 2011-07-14 GM Global Technology Operations LLC Hydraulic control system for an automatic transmission having a three path torque converter control subsystem
JP2011256991A (en) * 2010-06-11 2011-12-22 Aisin Aw Co Ltd Hydraulic pressure control device
KR101526403B1 (en) * 2013-12-18 2015-06-08 현대자동차 주식회사 A hydraulic control apparatus for hydraulic torque converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011021695A (en) * 2009-07-16 2011-02-03 Aisin Seiki Co Ltd Hydraulic pressure control device of fluid transmission device
US20110168509A1 (en) * 2010-01-11 2011-07-14 GM Global Technology Operations LLC Hydraulic control system for an automatic transmission having a three path torque converter control subsystem
JP2011256991A (en) * 2010-06-11 2011-12-22 Aisin Aw Co Ltd Hydraulic pressure control device
KR101526403B1 (en) * 2013-12-18 2015-06-08 현대자동차 주식회사 A hydraulic control apparatus for hydraulic torque converter

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