WO2022075652A1 - Dispositif de levée de soupape à variation continue - Google Patents

Dispositif de levée de soupape à variation continue Download PDF

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Publication number
WO2022075652A1
WO2022075652A1 PCT/KR2021/013297 KR2021013297W WO2022075652A1 WO 2022075652 A1 WO2022075652 A1 WO 2022075652A1 KR 2021013297 W KR2021013297 W KR 2021013297W WO 2022075652 A1 WO2022075652 A1 WO 2022075652A1
Authority
WO
WIPO (PCT)
Prior art keywords
rocker arm
planetary gear
gear
shaft
valve
Prior art date
Application number
PCT/KR2021/013297
Other languages
English (en)
Korean (ko)
Inventor
장순길
Original Assignee
장순길
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
Priority claimed from KR1020210000108A external-priority patent/KR102558879B1/ko
Application filed by 장순길 filed Critical 장순길
Publication of WO2022075652A1 publication Critical patent/WO2022075652A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • VVT Variable Valve Timing
  • VVD Variable Valve Duration
  • VVL Variable Valve Lift
  • a good mechanical device can be adjusted quickly to a continuous value, is low cost, has a simple and robust structure, is easy to manufacture and maintain, is not bulky, and allows several elements to be operated independently if possible. It has features such as requiring less modification to existing devices.
  • the lever principle can be used to change the degree of opening of a valve in an internal combustion engine.
  • the cam motion is converted to the valve motion through the rocker arm, the valve is at the action point, the cam is the force point, and the rocker arm shaft is at the fulcrum position, and the rocker arm can move on the principle of lever.
  • the action point If the fulcrum of the lever is moved from the force point to the action point, the action point generates a greater force than before, and the moving distance of the action point decreases. Reducing the moving distance of the operating point means that the moving distance of the valve end of the rocker arm is reduced, which means that the opening degree of the valve is reduced.
  • the planetary gear is the action point and the planetary gear is moved between the force point and the action point.
  • the sun gear shaft of the planetary gear device is the rocker arm shaft, a part of the ring gear is installed on the rocker arm, and one planetary gear is used between the sun gear and the ring gear so that the planetary gear becomes the fulcrum of the lever.
  • the rocker arm with the ring gear meshes with the planetary gear can move using the planetary gear as a fulcrum. If the planetary gear moves around the sun gear due to the rotation of the sun gear, it is the same as the movement of the fulcrum of the rocker arm, so the movement width of the rocker arm toward the valve side will change even if there is no change in the displacement of the cam.
  • the rocker arm installed with the ring gear has a valve at one end and a cam at the other end, the movement width of the valve will vary depending on the position of the planetary gear. Therefore, by adjusting the rocker arm shaft to adjust the position of the planetary gear, the lift of the valve can be adjusted.
  • the carrier shaft of the planetary gear device as the rocker arm shaft and one planetary gear may be used.
  • the sun gear and sun gear shaft are not used.
  • the continuously variable valve lifting method according to the present invention may be applied to a mechanical device part.
  • the ease of use and good control of the valve to suit your needs will allow you to achieve high performance.
  • a vehicle equipped with an internal combustion engine using the continuously variable valve lift device according to the present invention has improved performance, reduced fuel consumption, and reduced polluting components of exhaust gas, and is simple to manufacture and maintain due to its simple structure and cost burden It is not high, which will satisfy the requirements of both manufacturers and users.
  • a sun gear 2 is installed on the rocker arm shaft 1
  • a part of the ring gear 5 is installed on the rocker arm 4
  • a planetary gear is installed between the sun gear 2 and the ring gear 5 .
  • the gear 3 is installed
  • the auxiliary ring gears 7 and 8 are installed on both sides of the rocker arm 4
  • the rocker arm pin hole 6 is in the rocker arm 4 .
  • the rocker arm shaft 1 is rotatable.
  • a device for fixing the rocker arm shaft 1, a cam, a valve, and the like are omitted from the drawings.
  • the sun gear 2 meshes with the planetary gear 3 and the ring gear 5 and the auxiliary ring gear of the rocker arm 4 below the planetary gear 3
  • the shape of (7, 8) interlocking can be easily confirmed.
  • the planetary gear 3 shows the movement of the planetary gear 3 according to the rotation of the rocker arm shaft 1 and the movement of the rocker arm 4 according to the movement of the cam.
  • the planetary gear 3 moves around the sun gear 2 according to the rotation of the sun gear 2, and then acts as a fulcrum for the lever with respect to the rocker arm 4, It can be seen that the sun gear 2 has moved slightly along the periphery.
  • the rocker arm support (9) has holes in which the rocker arm shaft (1), the planetary gear shaft (13), and the rocker arm support roller (14) are installed, and the rocker arm support roller (14) is attached to the rocker arm (4).
  • An elastic sleeve 18 is provided at the contact portion.
  • the cross-sectional views show a case in which the auxiliary ring gears 7 and 8 are used and a case in which they are not used, respectively. If the auxiliary ring gears 7 and 8 are used, a rocker arm support 9 without a hole in which the rocker arm shaft 1 is installed may be used.
  • the planetary gear bearing 12 has a hole in which the rocker arm shaft 1 is installed and a hole in which the planetary gear shaft 13 is installed. There are holes in which the roller 14 and the auxiliary roller 17 are installed, respectively.
  • the rocker arm support roller 14 may be supported by a rocker arm support spring 10 installed on the rocker arm support 19 .
  • the cross-sectional views show a case in which the auxiliary ring gears 7 and 8 are not used. If auxiliary ring gears 7 and 8 are used, the planetary gear bearing 12 need not be used.
  • FIG. 6 shows a hinged cover 15 and a spring 16 with a hinge on the rocker arm 4 to keep the ring gear 5, planetary gear 3, and sun gear 2 continuously meshed. showing the device.
  • the teeth of the sun gear 2 in the portion where the cover 15 touches the upper portion of the rocker arm shaft 1 are not necessarily provided because a significant portion of the teeth are not used.
  • the planetary gear shaft 72 is connected to the rocker arm shaft 71, the planetary gear 73 is installed on the planetary gear shaft 72, and a part of the ring gear 5 is installed on the rocker arm 4 It shows that auxiliary ring gears 7 and 8 are installed on both sides of the rocker arm 4 , and the rocker arm pin hole 6 is provided in the rocker arm 4 .
  • the rocker arm shaft 71 is rotatable. A device for fixing the rocker arm shaft 71, a cam, a valve, and the like are omitted from the drawings.
  • rocker arm support 9 shows a rocker arm support 79 that allows the ring gear 5 of the rocker arm 4 to mesh with the planetary gear 73 .
  • the rocker arm support 9 has a hole through which the rocker arm support roller 14 is installed, and an elastic sleeve 18 is provided at a portion where the rocker arm support roller 14 abuts the rocker arm 4 .
  • the rocker arm support 79 may be installed on the rocker arm shaft 71 or the planetary gear shaft 72 .
  • the cross-sectional view shows a case in which the auxiliary ring gears 7 and 8 are used.
  • the rocker arm support roller 14 may be supported by installing the rocker arm support spring 10 on the rocker arm support 79 as shown in FIG. 5 .
  • the rocker arm shaft 1 is fixed to the internal combustion engine like the conventional rocker arm shaft, but is rotatable.
  • a sun gear 2 is installed on the rocker arm shaft 1 .
  • the sun gear 2 meshes with the planet gear 3 and the ring gear 5 of the rocker arm 4 in sequence.
  • Gears are not limited to spur gears. If the double helical gear is used, it is possible to prevent the planetary gear 3 and the ring gear 5 from sliding in the direction of the rocker arm shaft 1 without a separate device.
  • auxiliary ring gears 7 and 8 are installed in the internal combustion engine on one or both sides of the rocker arm 4 and mesh with the planetary gear 3, the planetary gear 3 always meshes with the sun gear 2, and the sun gear In the state in which (2) does not rotate, the planetary gear 3 cannot rotate around the sun gear 2, and therefore the ring gear 5 cannot move left and right either. Simply installing the auxiliary ring gears 7 , 8 does not always keep the ring gear 5 in mesh with the planetary gear 3 .
  • the planetary gear 3 may fall off without being meshed with the sun gear 2, and even when engaged, the planetary gear 3 will It can move around the gear (2), then the ring gear (5) can also move left and right together with the planetary gear (3). Therefore, when there are auxiliary ring gears 7 and 8, it is necessary to make the ring gear 5 mesh with the planetary gear 3, whereas in the absence of the auxiliary ring gears 7 and 8, the planetary gear 3 is It becomes more necessary to engage the sun gear 2 and to prevent the rocker arm 4 from moving left and right freely.
  • one end of the valve side of the rocker arm 4 can be moved up and down like a valve.
  • a pin can be inserted into the rocker arm pin hole (6) to connect with the valve, or grooves can be installed on either side of the valve to cause the pin to move along the groove.
  • the rocker arm support 9 shown in FIG. 4 can be installed on both sides of the rocker arm 4 so that the ring gear 5, the planetary gear 3, and the sun gear 2 are always in mesh.
  • the rocker arm support (9) always places the rocker arm support roller (14) in line with the rocker arm shaft (1) and the planetary gear (3), and between the rocker arm support roller (14) and the planetary gear shaft (13). Keeps the distance constant.
  • the rocker arm support roller 14 supporting the lower part of the rocker arm 4 is supported by the rocker arm support spring 10 using an elastic sleeve 18 or as shown in FIG. ) as a fulcrum to facilitate the operation of moving the valve.
  • the elastic sleeve 18 is made of an elastic material or it is preferable to use a spring or the like therein to increase and give elasticity when pressure is applied from the outside.
  • the elastic sleeve 18 is not limited to a circular shape, and it is sufficient if it has elasticity and can support the lower part of the rocker arm 4 . If the auxiliary ring gears 7 and 8 are used, the hole in which the rocker arm shaft 1 is installed in the rocker arm support 9 may be eliminated.
  • the rocker arm supports 11 and 19 shown in FIG. 5 may be installed on both sides of the rocker arm 4 so that the ring gear 5 and the planetary gear 3 do not fall apart and are always engaged.
  • the rocker arm support (11, 19) keeps the distance between the rocker arm support roller (14) and the planetary gear shaft (13) constant.
  • the planetary gear bearing 12 can be used to keep the distance between the rocker arm shaft 1 and the planetary gear shaft 13 constant when the auxiliary gear rings 7 and 8 are not used.
  • the number of rollers 14 and 17 is not limited.
  • the device for ensuring that the ring gear (5), planetary gear (3), and sun gear (2) are always in mesh is limited to rocker arm bearings (9) or rocker arm bearings (11, 19) and planetary gear bearings (12). it's not going to be
  • the spring 16 and the cover 15 shown in FIG. 6 may also be used for the same purpose.
  • the planetary gear 3 is located in the center of the rocker arm 4, and the ring gear 5 of the rocker arm 4 is the rocker arm support 9 shown in FIG.
  • the engagement with the planetary gear 3 is maintained by the rocker arm supports 11 and 19 shown in FIG. 5 or the spring 16 and the cover 15 shown in FIG. 6 .
  • the rocker arm shaft 1 rotates to the right
  • the planetary gear 3 rotates to the left.
  • the rocker arm shaft 1 rotates to the left.
  • the rocker arm shaft 1 rotates to the left.
  • the planet gear 3 rotates to the right, and thus the planet gear 3 moves to the right of the rocker arm 4 .
  • the rocker arm shaft 1 rotates to the right and the planetary gear 3 is moved to the left of the rocker arm 4 .
  • the cam rotates under the right end of the rocker arm (4).
  • the rocker arm 4 will push the valve down with the planetary gear 3 as a fulcrum and repeat.
  • the movement width of the valve is smaller than the lift of the cam because the planet gear 3 serving as a fulcrum is biased toward the valve.
  • the rocker arm shaft 1 rotates to the left and the planetary gear 3 moves to the right of the rocker arm 4 .
  • the cam rotates under the right end of the rocker arm 4, and the valve moves under the left end.
  • the rocker arm 4 will push the valve down with the planetary gear 3 as a fulcrum and repeat.
  • the movement width of the valve is larger than the lift of the cam because the planetary gear 3 serving as a fulcrum is biased toward the cam.
  • the planet gear 3 shows a case in which the auxiliary ring gears 7 and 8 are not present.
  • the planet gear 3 can rotate even if the sun gear 1 does not rotate, so that the planetary gear 3 rotates while the sun gear 3 rotates. It can move around the gear (1). Therefore, when the rocker arm 4 moves the valve by rotation of the cam, the planetary gear 3 and the rocker arm 4 may move together to the left and right.
  • the planetary gear 3 is positioned at the center of the rocker arm 4 , and the description of what is shown at the top in FIG. 2 may be applied as well.
  • the small diameter of the planetary gear 3 may help to save space, and some of the sun gear 1 and the ring gear 5 may be unused, leaving only necessary teeth and eliminating unused ones.
  • the rocker arm 4 , the planetary gear 3 , the sun gear 2 , etc. can be installed as many as needed on the rocker arm shaft 1 .
  • auxiliary ring gears 7 and 8 When the auxiliary ring gears 7 and 8 are used, several planetary gears 3 have one planetary gear shaft, and a plurality of planetary gears 3 connected to each other are installed on the shaft, or one long planetary gear 3 is installed. Since it can be used, even if a plurality of rocker arms 4 are installed on one rocker arm shaft 1 , it is not necessary to install as many auxiliary ring gears 7 and 8 according to the number of rocker arms 4 . If the auxiliary ring gears 7 and 8 are not used, a plurality of planetary gears cannot be installed using one planetary gear shaft because each planetary gear moves left and right separately, and each planetary gear 3 is a rocker. Each arm (4) should be installed separately.
  • the rocker arm 4 shown in the drawing is for explaining the principle of operation and is not intended to limit the shape of the rocker arm 4 .
  • One end of the rocker arm 4 may be changed as needed, such as by installing a roller.
  • the lift of the valve can be controlled by changing the position of the planetary gear 3 by rotating the rocker arm shaft 1 .
  • the rocker arm shaft 71 is fixed to the internal combustion engine like a conventional rocker arm shaft, but is rotatable. Auxiliary ring gears 7 , 8 are installed in the internal combustion engine on both sides of the rocker arm 4 .
  • the planetary gear 73 meshes with the ring gear 5 and the auxiliary ring gears 7 , 8 of the rocker arm 4 .
  • the rocker arm shaft 71 rotates, the position of the planetary gear shaft 72 is changed, and as the planetary gear shaft 72 moves, the planetary gear 73 rotates. This is because the planet gear 73 meshes with the ring gears 5, 7, 8. Therefore, if the rocker arm shaft 71 does not rotate, the planetary gear 73 does not move and does not rotate, and the rocker arm 4 cannot move left and right.
  • the rocker arm support 79 shown in FIG. 9 may be installed on both sides of the rocker arm 4 so that the ring gear 5 and the planetary gear 73 are always in mesh.
  • the rocker arm support roller 14 uses the elastic sleeve 18 or is supported by the rocker arm support spring 10 as shown in FIG. 5 so that the rocker arm 4 uses the planetary gear 73 as a fulcrum to move the valve. operation becomes easier.
  • an auxiliary roller 17 may be additionally used.
  • the device for ensuring that the ring gear 5 and the planetary gear 73 are always in mesh is not limited to the rocker arm support 79 .
  • the planetary gear 73 is positioned at the center of the rocker arm 4, and the ring gear 5 of the rocker arm 4 is formed by the rocker arm support 79 shown in FIG. It may be meshed with the planetary gear 3 .
  • the rocker arm shaft 71 rotates to the right
  • the planetary gear shaft 72 moves from the top of the ring gear 5 to the left while the planetary gear 73 rotates to the left
  • the rocker arm shaft 71 moves to the left.
  • the planet gear shaft 72 moves from the top of the ring gear 5 to the right while the planet gear 73 rotates to the right.
  • the rocker arm shaft 71 rotates to the right and the planetary gear 73 is moved to the left of the rocker arm 4 .
  • the cam rotates under the right end of the rocker arm (4).
  • the rocker arm 4 will push the valve down with the planetary gear 73 as a fulcrum and repeat.
  • the planetary gear 73 serving as a fulcrum is biased toward the valve, it can be seen that the movement width of the valve is smaller than the lift of the cam.
  • the rocker arm shaft 71 rotates to the left and the planetary gear 73 is moved to the right of the rocker arm 4 .
  • the cam rotates under the right end of the rocker arm 4, and the valve moves under the left end.
  • the rocker arm 4 pushes the valve downward with the planetary gear 73 as a fulcrum and repeats the release.
  • the planetary gear 73 serving as a fulcrum is biased toward the cam, it can be seen that the movement width of the valve is larger than the lift of the cam.
  • the diameter of the rocker arm shaft 71 and the diameter of the planetary gear shaft 72 are not limited.
  • the teeth of the planetary gear 73 may be made as needed and unused portions may be eliminated. 7, when the rocker arm shaft 71 is located outside the circumference of the planetary gear shaft 72, for assembling the planetary gear 73, the rocker arm shaft 71, the planetary gear shaft 72 , or special consideration may be required for manufacturing and assembling the planetary gear 73 . 8 and 9, when there is a rocker arm shaft 71 not to deviate from the circumference of the planetary gear shaft 72, special consideration is given to the size of the planetary gear shaft 72 and the size of the planetary gear 73. may be needed
  • the auxiliary ring gears 7 and 8 and the rocker arm 4 can be installed as many as needed.
  • Performance is one of the important qualities of a car.
  • the continuously variable valve lift apparatus according to the present invention can be applied to and used in an internal combustion engine used in automobiles. It will be readily available to improve the performance of automobiles with low cost and simple structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

La présente invention concerne un dispositif capable de modifier, selon une valeur continue, le degré d'ouverture d'une soupape à utiliser dans un moteur à combustion interne. Est également divulgué un procédé par lequel le dispositif de levée de soupape à variation continue selon la présente invention commande le degré d'ouverture d'une soupape par rotation d'un arbre de culbuteur avec une couronne dentée incluse dans un culbuteur, d'un pignon planétaire venant en prise avec la couronne dentée, et d'un pignon solaire disposé au niveau de l'arbre de culbuteur qui vient en prise avec le pignon planétaire. Le dispositif de levée de soupape à variation continue selon la présente invention contribue à la performance, à l'économie de carburant, à la réduction d'émissions de polluants environnementaux et analogues d'un véhicule.
PCT/KR2021/013297 2020-10-07 2021-09-29 Dispositif de levée de soupape à variation continue WO2022075652A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2020-0129491 2020-10-07
KR20200129491 2020-10-07
KR10-2020-0169041 2020-12-05
KR20200169041 2020-12-05
KR10-2021-0000108 2021-01-04
KR1020210000108A KR102558879B1 (ko) 2020-10-07 2021-01-04 연속 가변 밸브 리프트 장치

Publications (1)

Publication Number Publication Date
WO2022075652A1 true WO2022075652A1 (fr) 2022-04-14

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Application Number Title Priority Date Filing Date
PCT/KR2021/013297 WO2022075652A1 (fr) 2020-10-07 2021-09-29 Dispositif de levée de soupape à variation continue

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WO (1) WO2022075652A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100220486B1 (ko) * 1997-07-30 1999-09-15 정몽규 엔진의 연속 가변 밸브 리프트 장치
US6138620A (en) * 1997-10-29 2000-10-31 Honda Giken Kogyo Kabushiki Kaisha Valve operating system in an internal combustion engine
JP2011179405A (ja) * 2010-03-01 2011-09-15 Suzuki Motor Corp 内燃機関の可変動弁装置
CN104131854B (zh) * 2014-06-23 2017-02-22 贾开继 发动机连续可变气门正时、相位及升程技术
US20180266282A1 (en) * 2017-03-17 2018-09-20 Schaeffler Technologies AG & Co. KG Rocker arm with integrated gear train

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100220486B1 (ko) * 1997-07-30 1999-09-15 정몽규 엔진의 연속 가변 밸브 리프트 장치
US6138620A (en) * 1997-10-29 2000-10-31 Honda Giken Kogyo Kabushiki Kaisha Valve operating system in an internal combustion engine
JP2011179405A (ja) * 2010-03-01 2011-09-15 Suzuki Motor Corp 内燃機関の可変動弁装置
CN104131854B (zh) * 2014-06-23 2017-02-22 贾开继 发动机连续可变气门正时、相位及升程技术
US20180266282A1 (en) * 2017-03-17 2018-09-20 Schaeffler Technologies AG & Co. KG Rocker arm with integrated gear train

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