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WO2011118868A1 - Volant à double masse - Google Patents

Volant à double masse Download PDF

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Publication number
WO2011118868A1
WO2011118868A1 PCT/KR2010/001920 KR2010001920W WO2011118868A1 WO 2011118868 A1 WO2011118868 A1 WO 2011118868A1 KR 2010001920 W KR2010001920 W KR 2010001920W WO 2011118868 A1 WO2011118868 A1 WO 2011118868A1
Authority
WO
WIPO (PCT)
Prior art keywords
buffer member
scalpel
pressing
plate
driving
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.)
Ceased
Application number
PCT/KR2010/001920
Other languages
English (en)
Korean (ko)
Inventor
김영호
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.)
SEOJIN AUTOMOTIVE CO Ltd
Original Assignee
SEOJIN AUTOMOTIVE CO Ltd
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 SEOJIN AUTOMOTIVE CO Ltd filed Critical SEOJIN AUTOMOTIVE CO Ltd
Publication of WO2011118868A1 publication Critical patent/WO2011118868A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
    • F16F15/133—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
    • F16F15/134—Wound springs
    • F16F15/1343—Wound springs characterised by the spring mounting
    • F16F15/13438—End-caps for springs
    • F16F15/13446—End-caps for springs having internal abutment 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
    • F16F15/133—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
    • F16F15/134—Wound springs
    • F16F15/13469—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
    • F16F15/13476—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates
    • F16F15/13484—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs

Definitions

  • the present invention relates to a flywheel for power transmission, and more particularly to a dual scalpel flywheel that can effectively dampen collisions between members generated during driving.
  • Dual mass flywheel (DMF) is applied to automobile engines to reduce vibrations caused by torsion of the drive system.
  • This dual scalpel flywheel moves the drive plate connecting the primary mass and the secondary mass in conjunction with the arc spring mounted on the primary scalpel, and the damping action of the arc spring between the engine and the transmission. It mitigates shock and reduces vibration and noise caused by rapid acceleration of vehicles such as gear noise and body booming.
  • the primary scalpel is rotated to rotate the driving plate, thereby rotating the secondary scalpel connected to the transmission.
  • the rotational force of the primary scalpel is to press one end of the arc spring, the drive plate is pressed by the other end of the arc spring is rotated.
  • the dual scalpel flywheel is cushioned only by a shock absorbing member made of an arc spring. Therefore, when the primary scalpel rotates rapidly or the rotational speed of the secondary scalpel decreases sharply, the shock generated when the secondary scalpel exceeds the arc spring damping performance is vibrated. There is a problem that noise and breakage may occur. Therefore, there is a need for improvement.
  • the present invention has been made to solve the above problems, and an object thereof is to provide a dual scalpel flywheel capable of buffering a shock generated during driving a plurality of times.
  • the present invention provides a cover plate for transmitting a driving force from the driving unit and the pressing unit; A drive plate rotated by the pressing unit; A first buffer member interposed between the pressing portion and the pressing protrusion of the driving plate; A second buffer member inserted into the mounting hole of the driving plate; And a finishing portion for preventing the second buffer member from contacting the cover plate and the driving plate.
  • the cover plate is formed with a first pressing portion for pressing the first buffer member, a hole portion through which the support member connected to the drive plate is formed, the second portion for pressing the second buffer member in the hole portion It is characterized in that the addition is formed.
  • the first pressing portion is characterized in that the cover plate is made of a bent in the direction of the first buffer member, the fixing groove portion is inserted into which the fixing portion for restraining the first buffer member is provided.
  • the second pressing portion is characterized in that it is arranged to maintain a gap with the second buffer member.
  • finishing portion characterized in that it comprises a closing panel interposed between the second buffer member and the mounting hole.
  • the closing panel is formed with a mounting groove, characterized in that the mounting hole is formed with a mounting projection inserted into the mounting groove.
  • finishing panel is characterized in that the cover portion is bent between the second buffer member and the mounting hole portion is formed.
  • the first shock absorbing operation is performed by the first shock absorbing member
  • the second shock absorbing action is performed by the second shock absorbing member if the flow is continued by impact even after the first shock absorbing operation is completed.
  • FIG. 1 is an exploded perspective view showing a dual scalpel flywheel according to an embodiment of the present invention.
  • Figure 2 is a plan view showing a shock absorbing member mounting structure of the dual scalpel flywheel according to an embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing a dual scalpel flywheel according to an embodiment of the present invention.
  • Figure 4 is a perspective view of the cap of the dual scalpel flywheel according to an embodiment of the present invention.
  • FIG. 5 is a perspective view showing a driving plate of the dual scalpel flywheel according to an embodiment of the present invention.
  • Figure 6 is an exploded perspective view showing a coupling structure of the drive plate and the cover plate of the dual scalpel flywheel according to an embodiment of the present invention.
  • FIG. 7 is an exploded perspective view illustrating a second cushioning member and a finishing part of a dual scalpel flywheel according to an exemplary embodiment of the present invention.
  • FIG. 8 is a state diagram showing the use of a dual scalpel flywheel according to an embodiment of the present invention.
  • finish portion 92 finish panel
  • FIG. 1 is an exploded perspective view showing a dual scalpel flywheel according to an embodiment of the present invention
  • Figure 2 is a plan view showing a shock absorbing member mounting structure of the dual scalpel flywheel according to an embodiment of the present invention
  • Figure 3 Dual cross-section flywheel according to an embodiment of the invention is shown in cross-sectional view.
  • FIG. 4 is a perspective view illustrating a cap of a dual scalpel flywheel according to an embodiment of the present invention
  • FIG. 5 is a perspective view illustrating a driving plate of a dual scalpel flywheel according to an embodiment of the present invention.
  • FIG. 6 is an exploded perspective view illustrating a coupling structure of a driving plate and a cover plate of a dual scalpel flywheel according to an embodiment of the present invention
  • FIG. 7 is a second buffer of the dual scalpel flywheel according to an embodiment of the present invention
  • Figure 8 is an exploded perspective view showing the member and the finish
  • Figure 8 is a state diagram showing a dual scalpel flywheel according to an embodiment of the present invention.
  • a dual scalpel flywheel according to an embodiment of the present invention includes a primary scalpel 10 to which driving force is transmitted from a driving unit, and a cover plate 20 coupled to the primary scalpel 10.
  • the drive plate 30 rotated by the cover plate 20, the secondary scalpel 40 coupled to the drive plate 30 to transmit rotational force to the follower, the cover plate 20, and the drive plate 30.
  • the buffer member 50 interposed therebetween, the fixing part 70 which suppresses the flow of the buffer member 50, and the buffer member 50 do not come into contact with the cover plate 20 and the drive plate 30. Finish 90.
  • the driving unit means an engine in the case of a vehicle, and the drive shaft of the engine and the primary scalpel 10 are connected, and the edge of the cover plate 20 is welded to the edge of the primary scalpel 10 to drive the engine.
  • the scalpel 10 and the cover plate 20 are rotated at the same speed.
  • the driving plate 30 is rotatably installed between the primary scalpel 10 and the cover plate 20, and the secondary scalpel 40 and the connection member 86 which are rotatably disposed outside the cover plate 20. Are combined by.
  • the cover plate 20 is formed in an annular shape in which a hole portion 22 having a predetermined value or more is formed in the center, the driving plate 30 and the secondary scalpel 40 can be connected through the hole portion 22.
  • the secondary scalpel 40 and the driving plate 30 are provided with a plurality of fastening holes 36 and 42 to be coupled by a connecting member 86 such as a rivet, and the supporting member 82 to the primary scalpel 10.
  • a connecting member 86 such as a rivet
  • a bearing 84 are rotatably supported by the drive plate 30 and the secondary scalpel 40.
  • the shock absorbing member 50 is interposed between the cover plate 20 and the drive plate 30 to transmit the driving force and at the same time to cushion the shock generated between the cover plate 20 and the drive plate 30.
  • 52 and a second buffer member 54 interposed between the cover plate 20 and the drive plate 30 to perform the secondary shock absorbing operation.
  • a plurality of first buffer members 52 are arranged to maintain a predetermined interval and the fixing portion 70 is installed between the first buffer members 52 to form an annular shape on the edge side of the primary scalpel 10. do.
  • Fixing portion 70 is provided at the end of the first buffer member 52, the cap 72 and the cap 72 for preventing the first buffer member 52 can flow in the circumferential direction and flow in the radial direction,
  • the stopper 74 is interposed between the cap 72 to prevent the cap 72 from flowing in the radial direction.
  • the cap 72 fixes both ends of the first buffer member 52, and the cap 72 is closed by the stopper 74. Since it is suppressed to flow in the radial direction of the first buffer member 52 is to suppress the contact with the primary scalpel 10.
  • the cap 72 forms a groove portion into which the first buffer member 52 is inserted, and is arranged between the first buffer member 52 and the primary scalpel 10, and the first buffer member 52. ) Includes a second guide 76 disposed between the first buffer member 52 and the driving plate 30 and a flow preventing part connected to the stopper 74.
  • the first guide 77 is formed to be inclined in the radial direction of the primary scalpel 10, when the first buffer member 52 is bent in the radial direction by the centrifugal force generated by the rotation of the primary scalpel 10, the first cushion 77 is fully cushioned.
  • the member 52 is in contact with the inner wall of the first guide 77 to prevent the first buffer member 52 and the primary scalpel 10 from interfering.
  • the second guide 76 extends in a direction in which the first shock absorbing member 52 contacts the inner wall of the second guide 76 in a state where the primary scalpel 10 is stopped, and thus the first shock absorbing member 52 is separated from the first shock absorbing member 52.
  • the drive plate 30 is prevented from interfering.
  • the first shock absorbing member 52 is bent to form a curve in the radial direction of the primary scalpel 10 from the cover plate 20.
  • the shock absorbing operation is performed while transmitting the rotational force in the circumferential direction transmitted to the drive plate 30.
  • the first buffer member 52 is in close contact with the inner wall of the first guide 77, the first buffer member 52 is prevented from interfering with the inner wall of the primary scalpel 10. ) And the noise generated by the contact between the first buffer member 52 and vibration is reduced.
  • the second guide 76 interferes with the driving plate 30 while the first shock absorbing member 52, which was bent in the radial direction of the primary scalpel 10 by the driving of the engine, is restored to its original state when the rotational force of the engine is reduced. Prevent it.
  • the second guide 76 may be omitted, and such a change may be omitted. Since it can be easily changed and implemented by those skilled in the art having recognized the configuration will be omitted the specific drawings and description.
  • the flow preventing part includes a catching protrusion 78 provided at an end of the cap 72 and connected to the stopper 74.
  • the stopper 74 is formed in the shape of a panel interposed between the first buffer member 52, the groove portion (74a) is inserted into the both ends of the engaging projection 78 of the cap 72 is formed in the primary scalpel ( 10) is coupled to a fastening member such as a rivet on the edge side.
  • the stopper 74 is rotated to press one end of the first elastic member 52 to perform power transmission, and the locking protrusion 78 inserted into the groove portion 74a has a radius. Since the flow in the direction is suppressed, the first elastic member 52 and the primary scalpel 10 are prevented from interfering.
  • the drive plate 30 has a smaller annular shape compared to the cover plate 20, and a pressing protrusion 32 is formed at an outer edge thereof, and the pressing protrusion 32 is disposed between the first buffer members 52. .
  • the first shock absorbing member 52 is rotated by pressing the one end of the first shock absorbing member 52 with the cover plate 20 which is simultaneously rotated with the primary scalpel 10, the other side of the first shock absorbing member 52 is removed. The end pushes the pressing protrusion 32 to rotate the driving plate 30, and the secondary scalpel 40 connected to the driving plate 30 rotates to transmit power.
  • the first buffer member 52 when one end portion of the first buffer member 52 is pressed by the cover plate 20, the first buffer member 52 is compressed, and after the compression of the first buffer member 52 is performed to some extent, The other end of the first buffer member 52 pushes the pressing protrusion 32 of the driving plate 30 to transmit power.
  • the cover plate 20 includes a first pressing part 24 for pressing one side of the first buffer member 52 and a second pressing part 26 for pressing one side of the second buffer member 54.
  • the first pressing part 24 is formed by bending a portion of the annular panel-shaped cover plate 20 downward, and engaging protrusions of the cap 72 at both end portions facing the first buffer member 52. Fixing groove portion 28 is inserted is formed 78.
  • the cap 72 inserted into both ends of the first buffer member 52 is inserted into the fixing groove 28 of the first pressing unit 24, power transmission is performed and at the same time, the first buffer member 52 is primary. The radial flow of the scalpel 10 is prevented.
  • the first pressing part 24 presses the upper portion of the cap 72
  • the stopper 74 presses the lower portion of the cap 72
  • the first shock absorbing member 52 has the first pressing portion 24.
  • the rotational force of the stopper 74 are simultaneously transmitted to achieve power transmission.
  • the locking projection 78 of the cap 72 inserted into the first buffer member 52 is formed long in the vertical direction so that a portion of the upper side of the locking projection 78 is the fixing groove portion of the first pressing portion 24 ( 28 and the lower portion of the locking projection 78 is inserted into the groove portion 74a of the stopper 74, so that the cap 72 and the first buffer member 52 flow in the radial direction. 28 and the groove portion 74a can be effectively suppressed.
  • a locking groove portion other than the locking projection 78 is formed at the end of the cap 72, and protrusions are formed on the first pressing portion 24 and the stopper 74 to insert the locking groove portion of the cap 72.
  • a plurality of second pressing parts 26 are formed on the inner edge of the annular cover plate 20 to press the second buffer member 54 installed on the driving plate 30.
  • a plurality of mounting holes 34 are formed in the driving plate 30 so as to maintain a predetermined interval, and the second shock absorbing member 54 is inserted into the mounting holes 34, and the second press part 26 and the second The buffer member 54 is disposed to maintain a predetermined interval.
  • the second pressurizing portion 26 presses the second buffer member 54 to press the second buffer member. As the compression of 54 occurs, the secondary buffer operation is performed.
  • the second buffer member 54 is formed in a column shape inserted into the mounting hole part 34 of the driving plate 30, and is made of an elastic material, so that the external force is applied by the second pressing part 26 of the cover plate 20. When applied, it compresses and performs a cushioning operation.
  • the finishing part 90 includes a finishing panel 92 interposed between the second shock absorbing member 54 and the mounting hole 34, the second shock absorbing member 54 may be compressed by the second pressing part 26. At this time, it is possible to suppress the damage of the second cushioning member 54 made of the elastic material by the second pressing part 26 made of metal.
  • the closing panel 92 also suppresses contact between the second buffering member 54 and the mounting hole 34 of the driving plate 30, the second shock absorbing member 54 is damaged by the driving plate 30. Can be suppressed.
  • the finishing panel 92 is preferably made of a metal material.
  • a seating recess 92a is formed in the closing panel 92, an insertion hole 54a into which the seating recess 92a is fitted is formed in the second buffer member 54, and a seating recess 34 in the mounting hole 34.
  • the mounting protrusion 34a inserted into the 92a is formed.
  • the closing panel 92 is formed with a cover 92b that is bent between the second buffering member 54 and the mounting hole 34, so that the side of the second buffering member 54 and the mounting hole of the driving plate 30 are formed. The contact of the 34 can be suppressed.
  • the cover portion 92b Since the cover portion 92b is disposed at the edge of the drive plate 30, the second buffer member 54, which is moved outward by the centrifugal force when the drive plate 30 is rotated, comes into contact with the mounting hole 34. To prevent damage.
  • a plurality of cover parts 92b may be formed, and when a plurality of cover parts 92b are formed, a cover part 92b is interposed between one side surface of the second buffer member 54 and the mounting hole part 34. The cover 92b is interposed between the other side surface of the second buffer member 34 and the mounting hole 34.
  • the centrifugal force is generated by the rotation of the primary scalpel 10
  • the first buffer member 52 the cap 72 is inserted at both ends, the cap 72 is Since the flow in the radial direction is suppressed by the groove portion 74a of the stopper 74 and the fixing groove portion 28 of the first pressing portion 24, the first buffer member 52 and the primary scalpel 10 come into contact with each other. Is prevented.
  • the first buffer member 52 Due to the centrifugal force generated by the rotation of the primary scalpel 10, the first buffer member 52 is curved in a radial direction and is in close contact with an inner wall of the first guide 77 of the cap 72. Contact between the buffer member 52 and the primary scalpel 10 is suppressed.
  • the noise and vibration generated by the interference between the primary scalpel 10 and the first shock absorbing member 52 can be reduced, thereby enabling quiet and stable power transmission.
  • the second shock absorbing member 54 compressed by the second pressing part 26 is not in contact with the second pressing part 26 by the finishing panel 92, the second shock absorbing member 54 of the elastic material is made of metal. Can be prevented from being damaged by the second pressing portion 26.
  • the driving plate 30 is rotated. By the centrifugal force, the second buffer member 54 may be moved outwardly of the driving plate 30 to prevent damage by the mounting hole 34.
  • the dual scalpel flywheel installed in the vehicle has been described as an example, but this is merely illustrative, the dual scalpel flywheel of the present invention can be used in other products than the dual scalpel flywheel used in the vehicle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)
  • Vibration Dampers (AREA)

Abstract

La présente invention a trait à un volant destiné à la transmission de puissance et, plus particulièrement, à un volant à double masse qui amortit de façon efficace une collision entre des parties au cours du fonctionnement. La présente invention a trait à un volant à double masse comprenant : un couvercle sur lequel une force d'entraînement est transmise à partir d'une unité d'entraînement, et qui est équipé d'éléments de pression ; un plateau entraîneur qui est tourné par les éléments de pression ; un premier élément d'amortissement intercalé entre les éléments de pression et les protubérances de pression du plateau entraîneur ; un second élément d'amortissement inséré dans une partie de trou de montage du plateau entraîneur ; et un élément de fermeture qui empêche que le second élément d'amortissement n'entre en contact avec le couvercle et le plateau entraîneur.
PCT/KR2010/001920 2010-03-22 2010-03-30 Volant à double masse Ceased WO2011118868A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100025450A KR101099122B1 (ko) 2010-03-22 2010-03-22 듀얼 메스 플라이휠
KR10-2010-0025450 2010-03-22

Publications (1)

Publication Number Publication Date
WO2011118868A1 true WO2011118868A1 (fr) 2011-09-29

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ID=44673397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/001920 Ceased WO2011118868A1 (fr) 2010-03-22 2010-03-30 Volant à double masse

Country Status (2)

Country Link
KR (1) KR101099122B1 (fr)
WO (1) WO2011118868A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113531044A (zh) * 2021-08-11 2021-10-22 太仓良机机械有限公司 一种柴油机飞轮

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101386865B1 (ko) 2012-11-26 2014-04-17 평화크랏치공업 주식회사 듀얼 매스 플라이휠

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119693A (en) * 1990-03-26 1992-06-09 Valeo Damped double flywheel, in particular for automotive vehicles
US5848938A (en) * 1995-06-01 1998-12-15 Automotive Products, Plc Twin mass flywheel
KR20010012946A (ko) * 1998-03-27 2001-02-26 레메이르 마르 자동차용 이중 플라이휠 토션 댐퍼
KR20040090491A (ko) * 2003-04-17 2004-10-25 가부시키가이샤 에쿠세디 플라이휠 조립체

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100494886B1 (ko) 2002-04-12 2005-06-13 현대자동차주식회사 진동감쇠장치
JP4199095B2 (ja) 2003-10-14 2008-12-17 本田技研工業株式会社 原動機のフライホイール装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119693A (en) * 1990-03-26 1992-06-09 Valeo Damped double flywheel, in particular for automotive vehicles
US5848938A (en) * 1995-06-01 1998-12-15 Automotive Products, Plc Twin mass flywheel
KR20010012946A (ko) * 1998-03-27 2001-02-26 레메이르 마르 자동차용 이중 플라이휠 토션 댐퍼
KR20040090491A (ko) * 2003-04-17 2004-10-25 가부시키가이샤 에쿠세디 플라이휠 조립체

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113531044A (zh) * 2021-08-11 2021-10-22 太仓良机机械有限公司 一种柴油机飞轮

Also Published As

Publication number Publication date
KR101099122B1 (ko) 2011-12-26
KR20110106186A (ko) 2011-09-28

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