US20140255210A1 - Vehicle having variable oil pump - Google Patents

Vehicle having variable oil pump Download PDF

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Publication number
US20140255210A1
US20140255210A1 US13/955,976 US201313955976A US2014255210A1 US 20140255210 A1 US20140255210 A1 US 20140255210A1 US 201313955976 A US201313955976 A US 201313955976A US 2014255210 A1 US2014255210 A1 US 2014255210A1
Authority
US
United States
Prior art keywords
hydraulic pump
vehicle
ring gear
rotation speed
motor
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
Application number
US13/955,976
Other languages
English (en)
Inventor
Jin Young Hwang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Motor Co
Original Assignee
Hyundai Motor Co
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 Hyundai Motor Co filed Critical Hyundai Motor Co
Assigned to HYUNDAI MOTOR COMPANY reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HWANG, JIN YOUNG
Publication of US20140255210A1 publication Critical patent/US20140255210A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/724—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously using external powered electric machines
    • 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
    • F16H61/0028—Supply of control fluid; Pumps therefore using a single pump driven by different power sources
    • 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
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/20—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/45—Hybrid prime mover

Definitions

  • the present invention relates to a vehicle having a variable hydraulic pump that variably changes load of hydraulic pump for generating hydraulic pressure that is necessary for an engine or a transmission to reduce energy loss and cost.
  • the ISG (Idle Stop and Go) system uses information such as vehicle speed, engine rotation speed, coolant temperature, and so on to stop the engine in a predetermined condition and thereafter enables normal driving by restarting engine in a case that the restarting of the engine is demanded by a vehicle condition.
  • the ISG system stops an engine to enter into an idle stop condition when an engine is sufficiently warmed up, a coolant temperature is higher than a predetermined value, a condition that a vehicle speed is low or at zero (0), a shifting position of a transmission is neural, and a brake pedal is operated for a predetermined time.
  • the ISG device can increase fuel consumption efficiency of a vehicle up to 5 to 15%.
  • an automatic transmission has to have a motorized hydraulic pump that supplied oil pressure thereto in an idle stop condition of a vehicle having ISG system.
  • the vehicle having an automatic transmission and an ISG system includes a mechanical pump that is disposed in the automatic transmission to be operated by an engine in the ISG none operation condition and generates hydraulic pressure necessary for controlling the automatic transmission and an auxiliary motorized hydraulic pump that is operated in the ISG operation condition to generate hydraulic pressure for the automatic transmission.
  • the vehicle having the automatic transmission and the ISG system has two pumps that are a mechanical pump and an auxiliary motorized hydraulic pump, wherein the mechanical pump is operated during the operation of the engine and the auxiliary motorized hydraulic pump is alternatively operated during the none-operation of the engine.
  • the vehicle having the automatic transmission and the ISG system has to have two pumps having equal functions, and therefore vehicle cost is increased, vehicle weight is also increased, and the fuel consumption is deteriorated.
  • the present invention has been made in an effort to provide a vehicle having a variable hydraulic pump having advantages of minimizing energy lost by hydraulic pump, fuel consumption, and fluctuation of hydraulic pressure by optimally controlling the load of hydraulic pump.
  • a vehicle having a variable hydraulic pump may include a sun gear that receives a torque from a power source through an input shaft, a ring gear of which an interior circumference is with a distance from an exterior circumference of the sun gear, a planetary gear that is disposed between the interior circumference of the ring gear and the exterior circumference of the sun gear, a carrier that connects with an output shaft, a hydraulic pump that pumps oil through the output shaft that is connected to the carrier, and a motor that is disposed outside the ring gear to selectively rotate the ring gear.
  • the vehicle having a variable hydraulic pump may further include a shaft one way clutch that has the input shaft rotate in one direction, and a ring gear one way clutch that has the ring gear rotate in the other direction.
  • the power source may be an internal combustion engine or a motor.
  • the vehicle having a variable hydraulic pump may further include a controller that controls the motor depending on a rotation speed of the input shaft such that the hydraulic pump is controlled at a predetermined optimized speed.
  • the motor may be operated at a predetermined rotation speed such that the pump is operated at a minimum rotation speed in an idle stop condition.
  • a compensation value may be applied to a target rotation speed of the hydraulic pump depending on a temperature of the oil, when the power source is operated.
  • the rotation speed of the hydraulic pump is optimally controlled by a motor in accordance with the rotation speed or driving conditions of an engine to be able to reduce lost energy. Also, the fluctuation of hydraulic pressure that is formed by the hydraulic pump is reduced to be able to improve the stability. Further, compensation value is applied in accordance with oil temperature to be able to safely generate hydraulic pressure and one motor is used to optimally control the load of the hydraulic pump.
  • FIG. 1 is a schematic cross-sectional view of an exemplary variable hydraulic pump that is disposed in a vehicle according to the present invention.
  • FIG. 2 is a schematic diagram of an exemplary variable hydraulic pump that is disposed in a vehicle according to the present invention.
  • FIG. 3 is a schematic diagram showing an operational method of an exemplary variable hydraulic pump that is disposed in a vehicle according to the present invention.
  • FIG. 4 is a graph showing a compensation value that varies depending on oil temperature in an exemplary variable hydraulic pump according to the present invention.
  • FIG. 5 is a flowchart showing a control method of an exemplary variable hydraulic pump that is disposed in a vehicle according to the present invention.
  • FIGS. 6A , 6 B, 6 C and 6 D are schematic diagrams showing operational conditions of a variable hydraulic pump of a vehicle according to the present invention.
  • FIG. 1 is a schematic cross-sectional view of a variable hydraulic pump that is disposed in a vehicle
  • FIG. 2 is a schematic diagram of a variable hydraulic pump that is disposed in a vehicle according to various embodiments of the present invention.
  • a variable hydraulic pump of a vehicle includes an engine 100 as a power source, an input shaft 160 , a shaft one way clutch 155 , a sun gear 110 , a planetary gear 105 , a ring gear 140 , a ring gear one way clutch 150 , a motor 145 , a carrier 115 , an output shaft 120 , a hydraulic pump 135 , and a pump housing 165 .
  • the pump housing 165 includes a suction passage 125 through which oil is sucked to the hydraulic pump 135 and a discharge passage 130 through which oil is discharged.
  • the torque of the engine 100 is input to the sun gear 110 of the variable hydraulic pump through the input shaft 160 , and the shaft one way clutch 155 is disposed on an exterior circumference of the input shaft 160 to have the input shaft 160 rotate only in one rotation direction.
  • the ring gear one way clutch 150 is disposed on an exterior circumference of the ring gear 140 to have the ring gear 140 rotate only in the other rotation direction.
  • the motor 145 rotates the ring gear 140 in the other rotation direction.
  • the torque that is input to the input shaft 160 is transmitted to the sun gear 110 , the planetary gear 105 , the ring gear 140 , the carrier 115 , and the output shaft 120 such that the hydraulic pump 135 pumps oil.
  • the motor 145 rotates the ring gear 140 to operate the hydraulic pump 135 in a minimum load, and when the engine 100 rotates the input shaft 160 slower than a predetermined velocity, the motor 145 operates the hydraulic pump 135 in a predetermined optimized load.
  • the hydraulic pump 135 can be one of various types of pumps.
  • the hydraulic pump according to various embodiments of the present invention can use trochoid type internal gear.
  • FIG. 3 is a schematic diagram showing an operational method of a variable hydraulic pump that is disposed in a vehicle according to various embodiments of the present invention.
  • Ne denotes a rotation speed if the engine 100 or a rotation speed of the output shaft 120 or a rotation speed of the sun gear 110
  • Np denotes a rotation speed of the hydraulic pump 135 or the carrier 115
  • Nm denotes a rotation speed of the motor 145 or the ring gear 140
  • Zs denotes the number of the gear of the sun gear 110
  • Zr denotes the number of the gear of the ring gear 140 .
  • a rotation speed Np of the hydraulic pump 130 is determined by a lever principle, that is, Np can be determined by a rotation speed Ne of the engine 100 , a rotation speed Nm of the motor 145 , the number Zs the gear of the sun gear 110 and the number Zr of the gear of the ring gear 140 . That is, if the rotation speed of the motor 145 is increased in a condition that the rotation speed of the engine 100 is fixed, the rotation speed of the hydraulic pump 135 is increased, and if the rotation speed of the engine 100 is increased in a condition that the rotation speed of the motor 145 is fixed, the rotation speed of the hydraulic pump 135 is increased.
  • FIG. 4 is a graph showing a compensation value that varies depending on oil temperature in a variable hydraulic pump according to various embodiments of the present invention.
  • a horizontal axis denotes oil temperature
  • a vertical axis denotes alpha (a) value as a compensation value.
  • the alpha value is used to control the target rotation speed of the hydraulic pump 135 .
  • FIG. 5 the usage method of the compensation value will be further described.
  • FIG. 5 is a flowchart showing a control method of a variable hydraulic pump that is disposed in a vehicle according to various embodiments of the present invention.
  • a control is started in S 500 , and it is determined whether the motor 145 is normal or not in S 510 .
  • the method for determining whether the motor 145 is normal or not refers to disclosed arts and the detailed description thereof will be omitted in the present invention. If it is determined that the motor 145 is abnormal, a fail code is generated in S 570 , and the engine 100 is operated in a predetermined fail mode in S 580 . Here, the motor 145 is not operated, and the hydraulic pump 135 is operated by the engine 100 .
  • the idle stop condition (a condition that an engine is stopped in an idle condition) can be determined by a vehicle speed and a brake operating force. For example, the ISG condition is satisfied when a vehicle speed is less than or equal to a predetermined base value (ISG reference value) and a brake operating force is larger than or equal to a predetermined value (ISG reference value). If the vehicle is not in an idle stop condition, S 550 is performed, and if the vehicle is in an idle stop condition, S 540 is performed.
  • S 590 is performed.
  • the rotation speed (Nm) of the motor 145 is maintained at a predetermined value (N_isg) in S 590 . If it is determined that the rotation speed Ne of the engine 100 is not zero (0) in S 540 , it is determined whether oil temperature is larger than a reference value in S 550 . If it is determined that oil temperature is larger than a reference value, S 560 is performed, and if it is determined that oil temperature is less than a reference value, S 595 is performed.
  • a rotation speed (Nm) of the motor 145 is calculated by a controller through a formula ⁇ Zs/Zr*(Ne ⁇ (Np+ ⁇ )) ⁇ (Np+ ⁇ ) in S 560 .
  • a rotation speed (Nm) of the motor 145 is calculated by a controller through a formula ⁇ Zs/Zr*(Ne ⁇ Np) ⁇ Np in S 595 .
  • FIGS. 6A , 6 B, 6 C and 6 D are schematic diagrams showing operational conditions of a variable hydraulic pump of a vehicle according to various embodiments of the present invention.
  • FIG. 6A shows that an engine 100 is operated in an idle condition, wherein the rotation speed of the motor 145 is maintained to a relatively high state such that the rotation speed of the hydraulic pump 135 is maintained to a predetermined optimized value.
  • FIG. 6B shows that an engine 100 is operated in a low load condition, wherein the rotation speed of the motor 145 is maintained to a relatively middle state such that the rotation speed of the hydraulic pump 135 is maintained to a predetermined optimized value.
  • FIG. 6C shows that an engine 100 is operated in a high load condition, wherein the rotation speed of the motor 145 is maintained to a relatively low state or not operated such that the rotation speed of the hydraulic pump 135 is maintained to a predetermined optimized value.
  • FIG. 6D shows that an engine 100 is stopped to be operated, wherein the rotation speed of the motor 145 is maintained to an idle state such that the rotation speed of the hydraulic pump 135 is maintained to a predetermined optimized value.
  • the motor can be regarded as a stator of a general motor unit and the ring gear can be regarded as a rotor of the motor unit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Rotary Pumps (AREA)
  • Structure Of Transmissions (AREA)
US13/955,976 2013-03-11 2013-07-31 Vehicle having variable oil pump Abandoned US20140255210A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0025571 2013-03-11
KR1020130025571A KR101448748B1 (ko) 2013-03-11 2013-03-11 가변 오일펌프를 구비한 차량

Publications (1)

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US20140255210A1 true US20140255210A1 (en) 2014-09-11

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US13/955,976 Abandoned US20140255210A1 (en) 2013-03-11 2013-07-31 Vehicle having variable oil pump

Country Status (5)

Country Link
US (1) US20140255210A1 (ko)
JP (1) JP2014173722A (ko)
KR (1) KR101448748B1 (ko)
CN (1) CN104048033A (ko)
DE (1) DE102013109299A1 (ko)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150080163A1 (en) * 2012-03-30 2015-03-19 Advanced Insititutes Of Convergence Technology Transmission
US20170058892A1 (en) * 2015-08-31 2017-03-02 Mahle Filter Systems Japan Corporation Pump
WO2017147033A1 (en) * 2016-02-25 2017-08-31 Borgwarner Inc. Motor-driven pump for hydraulic control system
US20170335945A1 (en) * 2015-03-16 2017-11-23 Bayerische Motoren Werke Aktiengesellschaft Hybrid Oil Pump
WO2018101912A1 (en) * 2016-11-29 2018-06-07 Halliburton Energy Services, Inc. Dual turbine direct drive pump
US10267399B2 (en) * 2016-01-12 2019-04-23 Danfoss Power Solutions Gmbh & Co. Ohg Variable charge pump system for closed hydrostatic circuits
CN113864411A (zh) * 2021-10-26 2021-12-31 中南大学 一种无动力中断无级变速箱
US11319954B2 (en) * 2018-07-11 2022-05-03 Vitesco Technologies GmbH Pump device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017067270A (ja) * 2015-10-02 2017-04-06 ジヤトコ株式会社 オイルポンプ駆動システム
CN106813091A (zh) * 2017-03-15 2017-06-09 合肥海鲨智能科技有限责任公司 一种行星式齿轮油泵
DE102017213412B4 (de) * 2017-08-02 2019-04-04 Zf Friedrichshafen Ag Ölpumpenantriebsvorrichtung
KR102002999B1 (ko) * 2018-02-20 2019-07-23 경창산업주식회사 하이브리드 차량의 동력 전달 장치
KR102609812B1 (ko) * 2021-10-08 2023-12-05 주식회사 케이엘티 윤활유 주입기

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JP2001289315A (ja) * 2000-04-05 2001-10-19 Fuji Heavy Ind Ltd 自動車用自動変速装置
US6622805B2 (en) * 2001-02-28 2003-09-23 Jatco Ltd Parallel hybrid electric vehicle

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KR101252244B1 (ko) 2011-09-02 2013-04-09 주식회사 이엠따블유 다중 안테나

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Publication number Priority date Publication date Assignee Title
JP2001289315A (ja) * 2000-04-05 2001-10-19 Fuji Heavy Ind Ltd 自動車用自動変速装置
US6622805B2 (en) * 2001-02-28 2003-09-23 Jatco Ltd Parallel hybrid electric vehicle

Non-Patent Citations (1)

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Title
JP2001289315 translation; Oct 2001 by Ogawa, Hiroshi; AUTOMATIC TRANSMISSION FOR AUTOMOBILE *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150080163A1 (en) * 2012-03-30 2015-03-19 Advanced Insititutes Of Convergence Technology Transmission
US9315232B2 (en) * 2012-03-30 2016-04-19 Advanced Institutes Of Convergence Technology Transmission
US20170335945A1 (en) * 2015-03-16 2017-11-23 Bayerische Motoren Werke Aktiengesellschaft Hybrid Oil Pump
US20170058892A1 (en) * 2015-08-31 2017-03-02 Mahle Filter Systems Japan Corporation Pump
US10267399B2 (en) * 2016-01-12 2019-04-23 Danfoss Power Solutions Gmbh & Co. Ohg Variable charge pump system for closed hydrostatic circuits
WO2017147033A1 (en) * 2016-02-25 2017-08-31 Borgwarner Inc. Motor-driven pump for hydraulic control system
WO2018101912A1 (en) * 2016-11-29 2018-06-07 Halliburton Energy Services, Inc. Dual turbine direct drive pump
US11454222B2 (en) 2016-11-29 2022-09-27 Halliburton Energy Services, Inc. Dual turbine direct drive pump
US11319954B2 (en) * 2018-07-11 2022-05-03 Vitesco Technologies GmbH Pump device
CN113864411A (zh) * 2021-10-26 2021-12-31 中南大学 一种无动力中断无级变速箱

Also Published As

Publication number Publication date
DE102013109299A1 (de) 2014-09-11
CN104048033A (zh) 2014-09-17
KR101448748B1 (ko) 2014-10-08
KR20140111441A (ko) 2014-09-19
JP2014173722A (ja) 2014-09-22

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AS Assignment

Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HWANG, JIN YOUNG;REEL/FRAME:030917/0106

Effective date: 20130705

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION