US20130149170A1 - Method of controlling electric oil pump in hybrid vehicle - Google Patents
Method of controlling electric oil pump in hybrid vehicle Download PDFInfo
- Publication number
- US20130149170A1 US20130149170A1 US13/542,515 US201213542515A US2013149170A1 US 20130149170 A1 US20130149170 A1 US 20130149170A1 US 201213542515 A US201213542515 A US 201213542515A US 2013149170 A1 US2013149170 A1 US 2013149170A1
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- Prior art keywords
- oil pump
- electric oil
- revolutions
- controlling
- open loop
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000010354 integration Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
-
- 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
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
- B60W20/17—Control strategies specially adapted for achieving a particular effect for noise reduction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
- B60W30/194—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine related to low temperature conditions, e.g. high viscosity of hydraulic fluid
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/107—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
Definitions
- the present invention relates, in general, to a method of controlling an electric oil pump in a hybrid vehicle and, more particularly, to a method of controlling an electric oil pump at an ultra-low temperature.
- a hybrid vehicle is provided with an electric oil pump, which can operate irrespective of the operation of an engine, in addition to a mechanical oil pump, which is provided inside a transmission, so that hydraulic pressure necessary for the transmission can be supplied even in a situation in which, for example, the engine does not operate.
- the above-mentioned method of controlling an electric oil pump of the related art is generally carried out as shown in FIG. 1 .
- the electric oil pump is controlled following a target number of revolutions that is provided from a transmission control unit (TCU).
- TCU transmission control unit
- the electric oil pump is controlled in an open loop up to a predetermined reference number of revolution, thereby rapidly increasing the number of revolution of the electric oil lamp.
- closed loop control mode is performed by following the target number of revolutions that is provided from the TCU.
- the reference number of revolutions is set in consideration of the viscosity of oil of the transmission, so that an intended oil pressure can be rapidly built up.
- the electric oil pump is controlled in an open loop up to the reference number of revolutions of 500 RPM by the same method as that of the related art. Only after the number of revolutions has reached the reference number of revolutions, performed is a closed loop control mode, which follows the target number of revolutions. This consequently leads to a situation in which the number of revolutions of the electric oil pump is unnecessarily increased, as indicated by “A” in FIG. 2 .
- Various aspects of the present invention provide for a method of controlling an electric oil pump in a hybrid vehicle, in which the electric oil pump is controlled so that the number of revolutions thereof is not unnecessarily increased at an ultra-low temperature, so as to prevent unnecessary power consumption of the battery, thereby contributing to an increase in fuel efficiency, to prevent unnecessary noise, thereby improving the market quality of the vehicle, and to improve the endurance of the electric oil pump.
- Various aspects of the present invention provide for a method of controlling an electric oil pump in a hydraulic vehicle.
- the method includes the steps of: measuring an oil temperature of a transmission; determining whether or not the oil temperature of the transmission is an ultra-low temperature that does not exceed a predetermined reference temperature; controlling the electric oil pump in an open loop up to a target number of revolutions when the oil temperature of the transmission is the ultra-low temperature as a result of the step of determining whether or not the oil temperature of the transmission is an ultra-low temperature; and controlling the electric oil pump in a closed loop in order to follow the target number of revolutions after the step of controlling the electric oil pump in the open loop is ended.
- the electric oil pump of the hybrid vehicle may be controlled so that the number of revolutions thereof is not unnecessarily increased, so as to prevent unnecessary power consumption of the battery, thereby contributing to an increase in fuel efficiency, to prevent unnecessary noise, thereby improving the market quality of the vehicle, and to improve the endurance of the electric oil pump.
- FIG. 1 is a graph showing a process of the related art, which controls an electric depicting pump at room temperature.
- FIG. 2 is a graph depicting a process of the related art, which controls an electric depicting pump at ultra-low temperature.
- FIG. 3 is a process view depicting an exemplary method of controlling an electric oil pump in a hybrid vehicle according to the present invention.
- FIG. 4 is a graph depicting an exemplary process of controlling an electric oil pump at ultra-low temperature according to the present invention.
- a method of controlling an electric oil pump in a hybrid vehicle includes oil temperature-measuring step S 10 of measuring the oil temperature of a transmission, ultra-low temperature determination step S 20 of determining whether or not the oil temperature of the transmission is an ultra-low temperature that does not exceed a predetermined reference temperature, first open loop control step S 30 of controlling the electric oil pump in an open loop up to the target number of revolutions, and closed loop control step S 40 of controlling the electric oil pump in a closed loop in order to follow the target number of revolutions.
- the electric oil pump When the operation of the electric oil pump is started at an ultra-low-temperature state, the electric oil pump is not unconditionally controlled in an open loop up to a predetermined reference number of revolutions unlike the related art. Rather, the electric oil pump is controlled in the open loop up to a target number of revolutions that is provided from a transmission control unit (TCU), and after that, is controlled in a closed loop. This consequently excludes an excessive initial operation, which exceeds the target number of revolutions, from the electric oil pump, thereby increasing fuel efficiency by preventing unnecessary energy consumption, decreasing noise, and helping to improve the durability of the electric oil pump.
- TCU transmission control unit
- the predetermined reference temperature in the ultra-low temperature determination step S 20 is set in consideration of the effect that a change in the viscosity of oil in the transmission takes on the formation of oil pressure in response to the operation of the electric oil pump.
- the reference temperature may be set in the range of at least ⁇ 10° C. or less.
- the second open loop control step S 50 is performed to control the electric oil pump in an open loop up to the predetermined reference number of revolutions, and then the closed loop control step S 40 is performed after the second open loop control step S 50 .
- the second open loop control step S 50 is the same as a control method of the related art in a common situation.
- the reference number of revolutions in the second open loop control step S 50 is set in consideration of the responsibility of the electric oil pump based on the room temperature state, and is a number of revolutions that is higher than the target number of revolutions in the first open loop control step S 30 .
- the target number of revolutions that is calculated and presented by the TCU at the first open loop control step S 30 is a number of revolutions that is of course smaller than the reference number of revolutions.
- the relatively high target number of revolutions at the early stage of the startup of the electric oil pump is 300 RPM that is smaller than the reference number of revolutions 500 RPM. This conversely means that the reference number of revolutions is set to be greater than the target number of revolutions in the first open loop control step S 30 .
- the open loop control can be performed in duty control mode in which only a duty value is provided to the motor of the electric oil pump, whereas the closed loop control can be performed in proportional integration (PI) control mode in which the target number of revolutions is followed by feeding back the number of revolutions of the electric oil pump.
- PI proportional integration
- PID proportional/integral/derivative control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Control Of Transmission Device (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
- The present application claims priority of Korean Patent Application Number 10-2011-0131872 filed Dec. 9, 2011, the entire contents of which application is incorporated herein for all purposes by this reference.
- BACKGROUND OF INVENTION
- 1. Field of Invention
- The present invention relates, in general, to a method of controlling an electric oil pump in a hybrid vehicle and, more particularly, to a method of controlling an electric oil pump at an ultra-low temperature.
- 2. Description of Related Art
- A hybrid vehicle is provided with an electric oil pump, which can operate irrespective of the operation of an engine, in addition to a mechanical oil pump, which is provided inside a transmission, so that hydraulic pressure necessary for the transmission can be supplied even in a situation in which, for example, the engine does not operate.
- The above-mentioned method of controlling an electric oil pump of the related art is generally carried out as shown in
FIG. 1 . The electric oil pump is controlled following a target number of revolutions that is provided from a transmission control unit (TCU). In order to ensure responsibility at an early stage of the startup of the electric oil pump, the electric oil pump is controlled in an open loop up to a predetermined reference number of revolution, thereby rapidly increasing the number of revolution of the electric oil lamp. Once the number of revolutions exceeds the reference number of revolutions, closed loop control mode is performed by following the target number of revolutions that is provided from the TCU. - In the control method as described above, the reference number of revolutions is set in consideration of the viscosity of oil of the transmission, so that an intended oil pressure can be rapidly built up.
- However, in an ultra-low-temperature state, such as at −10° C. or less, the viscosity of the oil is relatively greater than that of the oil at room temperature, a sufficient amount of oil pressure can be built up even if the electric oil pump is rotated at a relatively small number of revolutions.
- Therefore, in the ultra-low-temperature state, it may be inappropriate to control the electric oil pump, which is set to the room temperature state, in an open loop up to a reference number of revolutions.
- As shown in
FIG. 2 , when the reference number of revolutions that is appropriately set to the room temperature state is 500 RPM, even if the target number of revolutions provided from the TCU is merely 300 RPM at an early stage, the electric oil pump is controlled in an open loop up to the reference number of revolutions of 500 RPM by the same method as that of the related art. Only after the number of revolutions has reached the reference number of revolutions, performed is a closed loop control mode, which follows the target number of revolutions. This consequently leads to a situation in which the number of revolutions of the electric oil pump is unnecessarily increased, as indicated by “A” inFIG. 2 . - When the number of revolutions of the electric oil pump is needlessly increased like this, the battery unnecessarily consumes electrical power, resulting in an adverse effect on fuel efficiency. In particular, this unnecessarily causes noise, thereby reducing the market quality of a vehicle, and is undesirable for the endurance of the vehicle, which is problematic.
- An exemplar of the related art is Korean Patent Application No. KR 10-2009-0045990 A.
- The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
- Various aspects of the present invention provide for a method of controlling an electric oil pump in a hybrid vehicle, in which the electric oil pump is controlled so that the number of revolutions thereof is not unnecessarily increased at an ultra-low temperature, so as to prevent unnecessary power consumption of the battery, thereby contributing to an increase in fuel efficiency, to prevent unnecessary noise, thereby improving the market quality of the vehicle, and to improve the endurance of the electric oil pump.
- Various aspects of the present invention provide for a method of controlling an electric oil pump in a hydraulic vehicle. The method includes the steps of: measuring an oil temperature of a transmission; determining whether or not the oil temperature of the transmission is an ultra-low temperature that does not exceed a predetermined reference temperature; controlling the electric oil pump in an open loop up to a target number of revolutions when the oil temperature of the transmission is the ultra-low temperature as a result of the step of determining whether or not the oil temperature of the transmission is an ultra-low temperature; and controlling the electric oil pump in a closed loop in order to follow the target number of revolutions after the step of controlling the electric oil pump in the open loop is ended.
- At an ultra-low temperature, the electric oil pump of the hybrid vehicle may be controlled so that the number of revolutions thereof is not unnecessarily increased, so as to prevent unnecessary power consumption of the battery, thereby contributing to an increase in fuel efficiency, to prevent unnecessary noise, thereby improving the market quality of the vehicle, and to improve the endurance of the electric oil pump.
- The methods and apparatuses of the present invention have other features and advantages which will be apparent from or are set forth in more detail in the accompanying drawings, which are incorporated herein, and the following Detailed Description, which together serve to explain certain principles of the present invention.
-
FIG. 1 is a graph showing a process of the related art, which controls an electric depicting pump at room temperature. -
FIG. 2 is a graph depicting a process of the related art, which controls an electric depicting pump at ultra-low temperature. -
FIG. 3 is a process view depicting an exemplary method of controlling an electric oil pump in a hybrid vehicle according to the present invention. -
FIG. 4 is a graph depicting an exemplary process of controlling an electric oil pump at ultra-low temperature according to the present invention. - Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is/are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
- Referring to
FIG. 3 , a method of controlling an electric oil pump in a hybrid vehicle according to various embodiments of the invention includes oil temperature-measuring step S10 of measuring the oil temperature of a transmission, ultra-low temperature determination step S20 of determining whether or not the oil temperature of the transmission is an ultra-low temperature that does not exceed a predetermined reference temperature, first open loop control step S30 of controlling the electric oil pump in an open loop up to the target number of revolutions, and closed loop control step S40 of controlling the electric oil pump in a closed loop in order to follow the target number of revolutions. - When the operation of the electric oil pump is started at an ultra-low-temperature state, the electric oil pump is not unconditionally controlled in an open loop up to a predetermined reference number of revolutions unlike the related art. Rather, the electric oil pump is controlled in the open loop up to a target number of revolutions that is provided from a transmission control unit (TCU), and after that, is controlled in a closed loop. This consequently excludes an excessive initial operation, which exceeds the target number of revolutions, from the electric oil pump, thereby increasing fuel efficiency by preventing unnecessary energy consumption, decreasing noise, and helping to improve the durability of the electric oil pump.
- The predetermined reference temperature in the ultra-low temperature determination step S20 is set in consideration of the effect that a change in the viscosity of oil in the transmission takes on the formation of oil pressure in response to the operation of the electric oil pump. In various embodiments, the reference temperature may be set in the range of at least −10° C. or less.
- As a result of the ultra-low temperature determination step S20, when it is not the ultra-low-temperature state, the second open loop control step S50 is performed to control the electric oil pump in an open loop up to the predetermined reference number of revolutions, and then the closed loop control step S40 is performed after the second open loop control step S50.
- That is, the second open loop control step S50 is the same as a control method of the related art in a common situation.
- Therefore, the reference number of revolutions in the second open loop control step S50 is set in consideration of the responsibility of the electric oil pump based on the room temperature state, and is a number of revolutions that is higher than the target number of revolutions in the first open loop control step S30.
- That is, for example, as shown in
FIG. 4 , when the reference number of revolutions is set at 500 RPM in consideration of the viscosity of the transmission oil at room temperature and in consideration of the responsibility following the start-up of the electric oil pump, the target number of revolutions that is calculated and presented by the TCU at the first open loop control step S30 is a number of revolutions that is of course smaller than the reference number of revolutions. The relatively high target number of revolutions at the early stage of the startup of the electric oil pump is 300 RPM that is smaller than the reference number ofrevolutions 500 RPM. This conversely means that the reference number of revolutions is set to be greater than the target number of revolutions in the first open loop control step S30. - The open loop control can be performed in duty control mode in which only a duty value is provided to the motor of the electric oil pump, whereas the closed loop control can be performed in proportional integration (PI) control mode in which the target number of revolutions is followed by feeding back the number of revolutions of the electric oil pump. Of course, in addition to the above, proportional/integral/derivative control (PID) mode or the like may be used as a particular method of closed loop control.
- When comparing
FIG. 4 withFIG. 2 , it can be appreciated that an overshoot at the early stage of the operation of the electric oil pump is solved, and that the number of revolutions of the electric oil pump is not unnecessarily increased. Accordingly, it is of course possible to increase the fuel efficiency of a vehicle, reduce noise in the vehicle, and increase the durability of the electric oil pump. - For convenience in explanation and accurate definition in the appended claims, the terms upper or lower, front or rear, inside or outside, and etc. are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.
- The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and their practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the present invention, as well as various alternatives and modifications thereof. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalents.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110131872A KR101724750B1 (en) | 2011-12-09 | 2011-12-09 | Electric oil pump control method of hybrid vehicle |
KR10-2011-0131872 | 2011-12-09 |
Publications (1)
Publication Number | Publication Date |
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US20130149170A1 true US20130149170A1 (en) | 2013-06-13 |
Family
ID=48464775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/542,515 Abandoned US20130149170A1 (en) | 2011-12-09 | 2012-07-05 | Method of controlling electric oil pump in hybrid vehicle |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130149170A1 (en) |
JP (1) | JP2013122310A (en) |
KR (1) | KR101724750B1 (en) |
CN (1) | CN103161933B (en) |
DE (1) | DE102012106917A1 (en) |
Cited By (3)
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US20140129119A1 (en) * | 2012-11-08 | 2014-05-08 | Kia Motors Corporation | Method and system for controlling warm-up of clutch fluid in hybrid electrical vehicle |
US10436081B2 (en) * | 2015-06-18 | 2019-10-08 | Hyundai Motor Company | Method for reducing noise of electric oil pump for vehicle |
CN112583306A (en) * | 2019-09-30 | 2021-03-30 | 日本电产东测株式会社 | Motor drive device and electric oil pump device |
Families Citing this family (9)
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US9168913B2 (en) * | 2013-07-11 | 2015-10-27 | Hyundai Motor Company | Oil pump system of hybrid vehicle and method for controlling the same |
KR101766017B1 (en) * | 2015-07-01 | 2017-08-08 | 현대자동차주식회사 | Method for diagnosis abrasion of electric oil pump rotor |
JP6288059B2 (en) * | 2015-12-09 | 2018-03-07 | トヨタ自動車株式会社 | Power transmission device for vehicle |
KR101806671B1 (en) | 2016-03-10 | 2017-12-08 | 현대자동차주식회사 | Method for controlling line pressure of hybird vehicle |
EP3540224B1 (en) * | 2016-11-14 | 2021-05-12 | TBK Co., Ltd. | Electric pump apparatus |
KR102602368B1 (en) | 2018-10-24 | 2023-11-17 | 현대자동차주식회사 | Vehicle and method for controlling the vehicle |
CN111441926A (en) * | 2019-01-17 | 2020-07-24 | 上海汽车集团股份有限公司 | Hybrid gearbox driving motor cooling electric oil pump system and control method |
JP7153628B2 (en) * | 2019-11-12 | 2022-10-14 | 本田技研工業株式会社 | hydraulic controller |
DE102019218010B4 (en) * | 2019-11-22 | 2022-04-28 | Zf Friedrichshafen Ag | Method and control unit for operating an oil pump |
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-
2011
- 2011-12-09 KR KR1020110131872A patent/KR101724750B1/en active IP Right Grant
-
2012
- 2012-06-26 CN CN201210214673.8A patent/CN103161933B/en not_active Expired - Fee Related
- 2012-06-28 JP JP2012145971A patent/JP2013122310A/en active Pending
- 2012-07-05 US US13/542,515 patent/US20130149170A1/en not_active Abandoned
- 2012-07-30 DE DE102012106917A patent/DE102012106917A1/en not_active Withdrawn
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US6454678B1 (en) * | 1999-12-30 | 2002-09-24 | Hyundai Motor Company | Shift control method for automatic transmission |
US6565473B2 (en) * | 2001-01-17 | 2003-05-20 | Toyota Jidosha Kabushiki Kaisha | Hydraulic pressure control apparatus for automatic transmission of vehicle |
US20110135499A1 (en) * | 2009-12-04 | 2011-06-09 | Hyundai Motor Company | Apparatus and method for controlling operation of electric oil pump |
Cited By (5)
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US20140129119A1 (en) * | 2012-11-08 | 2014-05-08 | Kia Motors Corporation | Method and system for controlling warm-up of clutch fluid in hybrid electrical vehicle |
US9593659B2 (en) * | 2012-11-08 | 2017-03-14 | Hyundai Motor Company | Method and system for controlling warm-up of clutch fluid in hybrid electrical vehicle |
US10436081B2 (en) * | 2015-06-18 | 2019-10-08 | Hyundai Motor Company | Method for reducing noise of electric oil pump for vehicle |
CN112583306A (en) * | 2019-09-30 | 2021-03-30 | 日本电产东测株式会社 | Motor drive device and electric oil pump device |
US11705852B2 (en) | 2019-09-30 | 2023-07-18 | Nidec Tosok Corporation | Motor driving device and electric oil pump device |
Also Published As
Publication number | Publication date |
---|---|
CN103161933A (en) | 2013-06-19 |
KR20130065147A (en) | 2013-06-19 |
KR101724750B1 (en) | 2017-04-10 |
JP2013122310A (en) | 2013-06-20 |
CN103161933B (en) | 2017-04-12 |
DE102012106917A9 (en) | 2013-08-22 |
DE102012106917A1 (en) | 2013-06-13 |
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Owner name: KIA MOTORS CORPORATION, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SONG, SANG LOK;JEONG, SANG HYUN;LEE, HAK SUNG;AND OTHERS;REEL/FRAME:028537/0374 Effective date: 20120611 Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SONG, SANG LOK;JEONG, SANG HYUN;LEE, HAK SUNG;AND OTHERS;REEL/FRAME:028537/0374 Effective date: 20120611 |
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