AU6524399A - Control system of line pressure for A/T automobile and its control method - Google Patents
Control system of line pressure for A/T automobile and its control method Download PDFInfo
- Publication number
- AU6524399A AU6524399A AU65243/99A AU6524399A AU6524399A AU 6524399 A AU6524399 A AU 6524399A AU 65243/99 A AU65243/99 A AU 65243/99A AU 6524399 A AU6524399 A AU 6524399A AU 6524399 A AU6524399 A AU 6524399A
- Authority
- AU
- Australia
- Prior art keywords
- valve
- spool
- automobile
- housing
- port
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Classifications
-
- 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
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2024—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means the throttling means being a multiple-way valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
- Magnetically Actuated Valves (AREA)
Description
T
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION
ORIGINAL
Name of Applicant: Actual Inventor: Address for Service: HYUNDAI MOTOR COMPANY Jin Soo LEE H.R. HODGKINSON CO.
Patent Trade Mark Attorneys Level 3, 20 Alfred Street MILSONS POINT NSW 2061 CONTROL SYSTEM OF LINE PRESSURE FOR A/T AUTOMOBILE AND ITS CONTROL METHOD 99 *o 9 5*
S
99. 9.
9 999 999* 99
S
99 9 9 Invention Title: The following statement is a full description of this invention, including the best method of performing it known to us: 1 CONTROL SYSTEM OF LINE PRESSURE FOR A/T AUTOMOBILE AND ITS CONTROL METHOD FIELD OF THE INVENTION The present invention relates to a valve for an automobile of an automobile, more particularly a valve for an automatic transmission of an automobile, which can control the flow of the high pressure oil supplied from the pressure source to the hydraulic actuator of the automatic transmission and can reduce the size of it.
o# BACKGROUND OF THE INVENTION Generally, in the automatic transmission for an automobile several working elements such as clutch and brake are provided to vary the output speed according to the driving conditions.
The working elements are operated with the pressure oil supplied from an oil tank. Then the pressure of the oil from the oil tank is too high to supply to the hydraulic actuator for the automatic transmission and the highpressure oil is controlled to suitable pressure for the hydraulic actuators of the working elements by several valves.
That is, the hydraulic actuators for working elements of the automatic transmission are small in their size and the hydraulic actuator is operated with low pressure.
Therefore, traditionally a regulator valve and a control valve control the high-pressure oil supplied from the oil pump according to the capacity of the working element.
And, a several type of control valves for changing the hydraulic line are provided in the hydraulic lines of the automatic transmission for the automobile.
2 Therefore the hydraulic actuator is operated with the oil finally controlled by the two valves or more. Then the traditional automatic transmission for an automobile has some disadvantages as follows.
The size of the traditional automatic transmission becomes larger, because a several valves and the hydraulic line are equipped in the transmission case. And since the hydraulic reactivity and the mechanical reactivity are delayed, the hydraulic actuators in the automatic transmission S0 cannot exactly control.
:i To solve the above problems, a direct control method that the pressure ee* 0 10 of the oil is regulated by a valve and directly supplied to the working elements of the automatic transmission is efficient. Then the valve used in the direct control method may control the high capacity of the oil. Therefore the size of a spring and/or a solenoid equipped on the valve must be large. As the result of that the size of the valve and the automatic transmission become larger 15 and the basic problem of the prior automatic transmission cannot be solved.
0. SUMMARY OF THE INVENTION The object of the present invention is to provide a valve for an automatic transmission of an automobile, which can directly control the pressure oil supplied from the oil pump with a valve alone and can reduce the size of the automatic transmission.
The present invention to achieve the above object comprises a valve for automatic transmission of automobile comprising a housing having input ports, a drain port and two output ports, a spool sliding in the hosing to open and close the ports selectively, a solenoid mounted on one end of the housing and energized with electric power for pulling the spool to one side of the housing, and a spring for returning the biased spool to the original position characterized in that a counter balance port and a pressure chamber for are provided in the housing, the counter balance port supplying some of the regulated pressure oil in the valve, and the pressure chamber being provided to opposite end of the solenoid A valve for automatic transmission of automobile, wherein the counter balance port is always connected with the input port to supply the pressure oil at all The valve for an automobile transmission of an automobile has a counter balance port and a pressure chamber in the valve housing, the regulated pressure oil supplied to the working elements is additionally o- 0 operated on the opposite side of the solenoid, while the energized solenoid is pulled the spool to close the output port.
That is, under the state that the high pressure oil is operated on the spool, which can be controlled by a small solenoid, because the counter balance force of the pressure chamber is additionally applied on the opposite side of the So15 solenoid.
ooooo Therefore, the valve in accordance with the present invention become smaller in size, and as the result of that, the size of the automatic transmission for the automobile can be reduced.
BRIFE DESCRIPTION OF THE DRAWINGS The above object and other advantages of the present invention will become more apparent by describing in detail the preferred embodiment of the present invention with reference to the attached drawings in which: Fig 1 is a schematic section view of the valve in accordance with the present invention, which is state that the spool of the valve opens the output ports; Fig 2 is a schematic section view of the valve in accordance with the present invention, which is state that the spool of the valve closes the output ports; Fig 3 is a schematic diagram showing the line pressure control method by using 4 the valve in accordance with the present invention.
DETAILED DESCRIPTION OF THE PRESENT INVENTION Fig 1 and Fig 2 show an embodiment of a valve in accordance with the present invention. The valve comprises a housing 10 having several ports 12, 14, 16 and a spool 18 sliding in the hosing 10 to open and close the ports selectively, a solenoid 20 mounted on one end of the housing 10 and energized with electric power for pulling the spool 18 toward the solenoid 20, and a •.spring 22 for returning the biased spool 18 to the original position.
oeo* S 10 The port 12 of the housing 10 is an input port receiving pressure oil from an oil pump (not shown), and the port 16 is an output port for supplying the regulated pressure oil to the hydraulic actuator of the working element in the automatic transmission.
The port 14 is a drain port for draining the pressure oil supplied from 15 the pump to the oil tank (not shown) when the spool 18 closes the output port 16.
And the spool 18 has several lands 24, 26, 28 for selectively opening and closing the ports 12, 14, 16 to regulate the pressure of the oil.
A counter balance port 30 and a pressure chamber 32 are provided in the housing 10. The counter balance port 30 is formed between the first land 24 and the second land 28 of the spool to be opened at all times. The pressure chamber 32 is formed on the other end of the housing 10 in opposite side of the solenoid 22.
As shown in Fig2, the input ports 12 are connected with the main line 34 supplying the pressure oil from the pump and the output ports 16 are connected with the working line 36 for supplying the regulated pressure oil to the hydraulic actuators of the working elements.
The drain port 14 is connected with the drain line 38 for draining the remained pressure oil in the housing 10, and the counter balance port 30 is connected with the pressure chamber 32 of the housing 10 through a counter balance line In the valve in accordance with the present invention as described above, when the solenoid 20 is not energized, the counter balance line force Pc-
A
1 the elastic forces FK of the spring 22, and the line force PL A 2 are operated on the spool And, the relation of the forces operated on the spool 20 is as follow, herewith, Pc- Al PL A 2
FK
Pc is a regulated pressure in the valve in accordance with the present invention
A
1 is an area, 41Idj 2 operated with the pressure of the regulated pressure PL PL is a line pressure supplied from the oil pump,
A
2 is an area, 4n(d 2 2 d 3 2 operated with the line pressure, FK is a force of the spring 22, Therefore, as shown in Fig 1, the spool 18 is biased to the opposite side of the solenoid 18. In this case, the land 24, 28 of the spool 18 open the output port 16, and the land 26 of the spool 18 closes the drain port 14. Therefore the pressure oil in the main line 34 is regulated in the valve and directly flows into the hydraulic actuator of the working element.
Next, when the solenoid 20 is energized, the solenoid force Fs is additionally operated on the spool And, the relation of the forces operated on the spool 20 is as follow, Fs+ Pc Al PL A2 FK herewith, Fs is a force of the solenoid Therefore, as shown in Fig 2, the spool 18 is pulled toward the solenoid 18. In this case, the land 24, 28 of the spool 18 close the output port 16 and the land 26 of the spool 18 opens the drain port 14. Therefore the pressure oil cannot flow into the hydraulic actuator of the working element and is drained through the drain port 14.
•.As described above, since the valve for an automatic transmission of 10 an automobile in accordance with the present invention has a counter balance *.port 30 and a pressure chamber 32 in the valve housing 10, the regulated *0*S pressure oil supplied to the working elements is additionally operated on the opposite side of the solenoid 18, while the energized solenoid 18 is pulled the o• 4 spool 18 to close the output port 16.
That is, under the state that the high pressure oil is operated on the *00o% spool 18, which can be controlled by a small solenoid 20, because the counter balance force of the pressure chamber 32 is additionally applied on the opposite oo side of the solenoid Therefore, the valve in accordance with the present invention can get smaller in size, and as the result of that, the size of the automatic transmission for the automobile can be reduced.
Furthermore, since the regulated pressure oil in the valve in accordance with the present invention is directly supplied into the hydraulic actuator of the working element in the automatic transmission, the hydraulic reactivity and the mechanical reactivity are increased and the hydraulic actuators in the automatic mission can exactly control.
Claims (2)
1. A valve for automatic transmission of automobile comprising a housing having input ports, a drain port and two output ports, a spool sliding in the hosing to open and close the ports selectively, a solenoid mounted on one end of the housing and energized with electric power for pulling the spool to one side of the housing, and a spring for returning the biased spool to the original position characterized in that a counter balance port and a pressure chamber for are provided in the housing, the counter Sto balance port supplying some of the regulated pressure oil in the valve, and the pressure chamber being provided to opposite end of the solenoid.
2. A valve for automatic transmission of automobile, wherein the counter balance port is always connected with the input port to supply the *0 15 pressure oil at all time Dated this 13th day of December 1999. HYUNDAI MOTOR COMPANY by: 14. i1 Patent Attorneys H.R. HODGKINSON I the Applicant
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR9941025 | 1999-09-22 | ||
| KR1019990041025A KR20010028657A (en) | 1999-09-22 | 1999-09-22 | Control system of line pressure for A/T automobile and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU6524399A true AU6524399A (en) | 2001-03-29 |
Family
ID=19612696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU65243/99A Abandoned AU6524399A (en) | 1999-09-22 | 1999-12-15 | Control system of line pressure for A/T automobile and its control method |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2001099279A (en) |
| KR (1) | KR20010028657A (en) |
| CN (1) | CN1118652C (en) |
| AU (1) | AU6524399A (en) |
| DE (1) | DE19959943A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2446599B (en) * | 2007-02-15 | 2009-01-14 | Gm Global Tech Operations Inc | A clutch in an automatic transmission |
| DE102007042207A1 (en) * | 2007-09-05 | 2009-03-12 | Zf Friedrichshafen Ag | Pressure relief valve and arrangement of a pressure relief valve for pilot control of a pressure control valve |
| DE102009047623A1 (en) * | 2009-12-08 | 2011-06-09 | Robert Bosch Gmbh | Electromagnetically actuated slide valve with integrated safety function |
| CN103587510B (en) * | 2013-10-27 | 2015-11-25 | 沈阳建筑大学 | One is blown out emergency facility |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7202049U (en) * | 1973-06-28 | Bosch R Gmbh | Pressure control valve | |
| DE2822597A1 (en) * | 1978-05-24 | 1979-11-29 | Bosch Gmbh Robert | PRESSURE REGULATING VALVE |
| DE8322570U1 (en) * | 1983-08-05 | 1985-01-17 | Robert Bosch Gmbh, 7000 Stuttgart | PRESSURE REGULATOR |
| DE3505377C2 (en) * | 1985-02-16 | 1994-07-07 | Bosch Gmbh Robert | Pressure regulator |
| JP3102137B2 (en) * | 1992-04-14 | 2000-10-23 | トヨタ自動車株式会社 | Hydraulic control device for automatic transmission |
| DE4328503C2 (en) * | 1992-12-03 | 2001-10-11 | Volkswagen Ag | Switching valve |
| US5518091A (en) * | 1992-12-03 | 1996-05-21 | Volkswagen Ag | Slide valve for controlling a bridging clutch in an automatic transmission |
| JP3627338B2 (en) * | 1995-12-30 | 2005-03-09 | アイシン・エィ・ダブリュ株式会社 | Pressure regulating valve in hydraulic control device of automatic transmission |
-
1999
- 1999-09-22 KR KR1019990041025A patent/KR20010028657A/en not_active Application Discontinuation
- 1999-12-13 DE DE19959943A patent/DE19959943A1/en not_active Ceased
- 1999-12-14 JP JP35500699A patent/JP2001099279A/en active Pending
- 1999-12-15 AU AU65243/99A patent/AU6524399A/en not_active Abandoned
- 1999-12-30 CN CN99127453A patent/CN1118652C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010028657A (en) | 2001-04-06 |
| CN1288831A (en) | 2001-03-28 |
| DE19959943A1 (en) | 2001-04-12 |
| CN1118652C (en) | 2003-08-20 |
| JP2001099279A (en) | 2001-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7766139B2 (en) | Method of operating a DCT hydraulic power control system as well as DCT hydraulic power control system | |
| DE102010016087B4 (en) | System and method for controlling fluid flow rates in an automatic transmission hydraulic circuit | |
| GB9811398D0 (en) | Spool valve | |
| GB2339249A (en) | Hydraulic system with a single pressure transducer monitoring recharging and operating pressure | |
| EP1227249A4 (en) | Pipe breakage control valve device | |
| EP0864761A4 (en) | Hydraulic control apparatus | |
| EP0846872A1 (en) | Transfer valve manifold | |
| DE2655633A1 (en) | GAS / HYDRAULIC PRESSURE ACTUATOR FOR PIPE VALVES | |
| EP0952358A3 (en) | Hose rupture control valve unit | |
| WO2001033307A3 (en) | Valve, especially a pressure control valve | |
| EP1118793A3 (en) | Hydraulic damping valve | |
| KR100837467B1 (en) | Proportional solenoid valve | |
| JP3662968B2 (en) | Lubricating oil passage configuration of transmission | |
| US6758128B2 (en) | Hydraulic circuit for working machine | |
| AU6524399A (en) | Control system of line pressure for A/T automobile and its control method | |
| US6742438B2 (en) | Hydraulic valve control device for heavy construction equipment | |
| DE102005048950B3 (en) | Control valve for clutch actuating device of motor vehicle, has valve body moved to one switching position by valve rod that is centered in initial position, where spring and magnetic forces indirectly act on rod that is pre-stressed | |
| KR19980038855A (en) | Hydraulics for cylinders for work tools of construction machinery | |
| KR20090035137A (en) | Apparatus operating hydraulic actuator for valve | |
| KR20040019008A (en) | Method for operating an electrohydraulic valve control system of an internal combustion engine, computer program and control and regulating device for operating an internal combustion engine | |
| EP1481148B1 (en) | Device for controlling charge exchange valves | |
| KR960705161A (en) | HYDROSTATIC DRIVE WITH BRAKE VALVE | |
| KR100354038B1 (en) | Hydraulic damper clutch control device of automatic transmission | |
| US4489644A (en) | Multiple control valves | |
| CN211737818U (en) | Hydraulic control unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |