Patents by Inventor Young Hong Kwak
Young Hong Kwak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7987826Abstract: A variable valve lift apparatus according to an exemplary embodiment of the present invention includes a low lift cam, a high lift cam in parallel with the low lift cam, a low lift tappet body that selectively contacts the low lift cam, a high lift tappet body disposed within the low lift tappet body and constantly contacting the high lift cam, a guide portion that is connected with a valve and selectively connects the low lift tappet body and the high lift tappet body, and a lost motion spring that is disposed between the guide portion and the low lift tappet body and supplies restoring force to the low lift tappet body.Type: GrantFiled: June 24, 2008Date of Patent: August 2, 2011Assignee: Hyundai Motor CompanyInventors: Young Hong Kwak, Kiyoung Kwon, Ki Uk Shin, Jin Kook Kong
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Patent number: 7966980Abstract: A variable compression ratio apparatus that changes the compression ratio of an air-fuel mixture in a combustion chamber according to a driving state of an engine, enablements may include a connecting rod receiving the combustion force from the piston; a pin link receiving a part of the combustion force from the connecting rod and rotating the crankshaft; a support link disposed substantially in parallel with the connecting rod; a division link receiving a part of the combustion force from the connecting rod and transmitting the part of the combustion force to the support link; a control link provided with one end coupled to the division link in order to change position of one end of the division link; and an eccentric camshaft coupled to other end of the control link in order to change position of a rotational axis of the control link.Type: GrantFiled: June 5, 2008Date of Patent: June 28, 2011Assignee: Hyundai Motor CompanyInventors: Eun Ho Lee, Jei Choon Yang, Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Soo Hyung Woo, Young Jin Won
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Publication number: 20110132305Abstract: The present invention relates to a variable tappet, and the variable tappet may include an inner tappet body of which a latching member connecting hole is formed thereto, a protrude portion formed to the latching member connecting hole, an outer tappet body which is disposed around the inner tappet body and slidable to the inner tappet body and a latching member which is disposed to the outer tappet body and selectively connected to the latching member connecting hole.Type: ApplicationFiled: July 29, 2010Publication date: June 9, 2011Applicant: Hyundai Motor CompanyInventors: Jei Choon Yang, Gee Wook Shin, Sang Won Kim, Jin Kook Kong, Soo Hyung Woo, Byong Young Choi, Young Hong Kwak, Jin Soon Kim
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Patent number: 7950360Abstract: A continuous variable valve lift apparatus according to an exemplary embodiment of the present invention includes an input cam disposed to an input shaft, a first shaft in parallel with the input shaft, a first link connected with the first shaft, a second link rotatably connected to the first link, an output cam that is rotatably connected with the second link and configured with a contact portion contacting the input cam, a second shaft disposed to the output cam parallel with the input shaft, at least one valve unit that is opened and closed by the output cam, and a control part that controls a position of the second shaft.Type: GrantFiled: June 20, 2008Date of Patent: May 31, 2011Assignee: Hyundai Motor CompanyInventors: Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Kyoung Joon Chang
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Patent number: 7918202Abstract: A variable valve apparatus includes a high lift cam and a low lift cam in parallel with the high lift cam. A tappet body includes a high lift tappet body that constantly contacts the high lift cam, and a low lift tappet body that is disposed in the high lift tappet body and selectively contacts the low lift cam. An inner column is connected with a valve and reciprocally disposed within the low lift tappet body. A supporting member is disposed below the tappet body. A lost motion elastic member is disposed between the supporting member and the tappet body for supplying restoring force to the tappet body. A first connector selectively connects the high lift tappet body and the low lift tappet body. A second connector selectively connects the low lift tappet body and the inner column.Type: GrantFiled: October 1, 2008Date of Patent: April 5, 2011Assignee: Hyundai Motor CompanyInventors: Young Hong Kwak, Kiyoung Kwon, Ki Uk Shin, Jin Kook Kong, Kyoung Joon Chang
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Patent number: 7905207Abstract: A variable valve lift apparatus may include a camshaft having an input cam, a rocker arm shaft disposed in parallel with the camshaft with a distance therebetween, a shaft carrier with a camshaft and a rocker arm shaft, a rocker arm that is mounted on the rocker arm shaft with a first roller contacting the input cam, a first link connected to the rocker arm, an amplification lever with a middle portion thereof connected to the first link and the shaft carrier, a second link connected to the amplification lever, an output cam mounted on the camshaft, one side of the output cam connected to the second link, and a profile portion formed at an exterior circumference thereof, a variable driveshaft rotating the shaft carrier by a predetermined angle, and a valve moved by the profile portion with rotation of the output cam.Type: GrantFiled: November 20, 2008Date of Patent: March 15, 2011Assignee: Hyundai Motor CompanyInventors: Eun Ho Lee, Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Soo Hyung Woo, Kyoung Joon Chang
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Publication number: 20110036317Abstract: A continuously variable valve lift device for a vehicle is provided, which includes a drive shaft rotating in association with a crank shaft and having a drive cam formed on an outer periphery thereof, a locker arm shaft provided apart from the drive shaft and having one end that supports a rocker arm rotating and rocking in association with the drive cam, output cams rotatably installed on the drive shaft to interlock with the other end of the rocker arm, and a variable drive part straightly moving the rocker arm shaft in a vertical direction of the rocker arm shaft to vary a valve lift. When a valve is shifted from the high-lift state to the low-lift state, a pumping loss is reduced to improve the fuel consumption ratio. Also, since an advance function is provided, an exhaust-side CVVT can be deleted to greatly reduce the manufacturing cost.Type: ApplicationFiled: November 24, 2009Publication date: February 17, 2011Applicant: Hyundai Motor CompanyInventors: Jei Choon Yang, Byong Young Choi, Young Hong Kwak, Ki Young Kwon, Jin Kook Kong, Soo Hyung Woo, Jin Soon Kim
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Publication number: 20110036318Abstract: A continuously variable valve lift device of an engine may include a cam shaft having an eccentric cam formed on an outer peripheral surface of the cam shaft so that an oscillating outer-race wheel is coupled to and oscillatable along the eccentric cam, an output cam being rotably fitted to the cam shaft, a sliding shaft for varying the position of the output cam by moving straightly in a front and rear direction according to an engine operating condition, in which the sliding shaft has a deviation adjustment member which is formed to be eccentric toward an outer peripheral surface thereof, and a rocker arm rotably fitted to the deviation adjustment member and one end of which is rotably connected to the oscillating outer-race wheel and the other end of which is rotably engaged with the output cam.Type: ApplicationFiled: July 13, 2010Publication date: February 17, 2011Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Jei Choon Yang, Byong Young Choi, Young Hong Kwak, Ki Young Kwon, Jin Kook Kong, Soo Hyung Woo, Jin Soon Kim
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Patent number: 7836863Abstract: A variable lift apparatus of an engine for a vehicle may include a camshaft in which a cam is formed, a swing arm one side of which is supported by a supporting portion and another side of which operates a valve, an output arm including a roller press portion extended in one direction and a rotating arm extended in another direction, a first roller disposed in the connecting portion in which the rotating arm and the roller press portion are connected and that contacts the cam, a second roller disposed in the swing arm and contacting a roller contacting surface, a variable link connected with a lower end side of the rotating arm protruding in a lower side of the output arm by a hinge shaft and moves the hinge shaft according to a guide slot formed in a guide and a variable rotation shaft for operating the variable link.Type: GrantFiled: November 7, 2008Date of Patent: November 23, 2010Assignee: Hyundai Motor CompanyInventors: Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Kyoung Joon Chang
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Patent number: 7827952Abstract: A variable tappet includes a tappet body; a variable portion in the tappet body, configured to open and close a valve; and a control portion to maintain the variable portion in either a first state, at which it can open and close the valve, and a second state, at which it cannot open and close the valve.Type: GrantFiled: December 28, 2007Date of Patent: November 9, 2010Assignee: Hyundai Motor CompanyInventor: Young Hong Kwak
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Patent number: 7823552Abstract: A continuous variable valve lift apparatus includes an input cam disposed on an input shaft, a valve opening/closing portion, and a rocker arm rotating shaft. A rocker arm rotates around the rocker arm rotating shaft corresponding to a rotation of the input cam. An output cam is disposed at an end of the rocker arm, and opens and closes the valve opening/closing portion. A control portion controls a position of the rocker arm rotating shaft.Type: GrantFiled: December 28, 2007Date of Patent: November 2, 2010Assignee: Hyundai Motor CompanyInventors: Kiyoung Kwon, Young Hong Kwak, Ki Uk Shin, Kyoung Joon Chang, Jin Kook Kong
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Patent number: 7789053Abstract: A continuous variable valve lift apparatus according to an exemplary embodiment of the present invention includes a camshaft, an input cam disposed to the camshaft, a variable lever that is rotably connected to the camshaft and includes a first arm including a first connecting shaft and a second arm including a second connecting shaft, a first link rotating around the first connecting shaft corresponding to a rotation of the input cam, an output cam rotating around the camshaft, a valve opening/closing portion that is opened and closed corresponding to a rotation of the output cam, and a connecting portion that is disposed for the output cam to rotate corresponding to a rotation of the first link.Type: GrantFiled: April 23, 2008Date of Patent: September 7, 2010Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jin Kook Kong, Won Geun Lee, Kyoung Joon Chang, Kiyoung Kwon, Young Hong Kwak, Ki Uk Shin, Eun Ho Lee, Young Nam Kim
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Publication number: 20100139590Abstract: An apparatus for adjusting deviation of an engine and a continuously variable valve lift device including the same are provided. The apparatus for adjusting deviation of an engine includes an adjustment member connecting a rocker arm to plural output cams, respectively, to adjust lengths between the rocker arm and the output cams, respectively, so that the lengths become equal to or different from each other. The continuously variable valve lift device includes an eccentric cam shaft with eccentric cams installed on its outer periphery, a rocker arm rotatably installed on the eccentric cams to interlock with plural output cams, and apparatus for adjusting deviation provided on the rocker arm to adjust lengths between the rocker arm and the output cams so that the lengths become equal to or different from each other.Type: ApplicationFiled: October 5, 2009Publication date: June 10, 2010Applicant: Hyundai Motor CompanyInventors: Jei Choon YANG, Young Hong Kwak, Ki Uk Shin, Jin Kook Kong, Soo Hyung Woo, Jin Soon Kim, Ki Young Kwon
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Publication number: 20100122677Abstract: A variable valve lift apparatus may include an input unit, a control link disposed to a control shaft, a driving cam that is provided with a contact portion and pivotally disposed to the control shaft, a valve opening unit that contacts the contact portion and is opened and closed in accordance with pivoting of the driving cam, wherein the control link, the input unit and the driving cam are connected by a connecting unit, and contact positions of the valve opening unit and the contact portion are variable according to a relative rotation angle of the control link around the control shaft.Type: ApplicationFiled: July 31, 2009Publication date: May 20, 2010Applicant: Hyundai Motor CompanyInventors: Eun Ho LEE, Young Hong KWAK, Ki Young KWON, Jin Kook KONG, Soo Hyung WOO, Young Nam KIM
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Publication number: 20100077974Abstract: A continuously variable valve lift device may include a vibration link having one end eccentrically and rotatably coupled to a rotation shaft, a rocker arm having a middle portion pivotally coupled to the other end of the vibration link, an advance lever having one end coupled to the one end of the rocker arm to select advance or delay, a swivel cam link having one end pivotally coupled to the other end of the rocker arm, and a swivel cam, one end of which is pivotally coupled to the other end of the swivel cam link and the other end of which is pivotally coupled to a stationary shaft to open and close a valve.Type: ApplicationFiled: July 21, 2009Publication date: April 1, 2010Applicant: Hyundai Motor CompanyInventors: Jei Choon YANG, Eun Ho Lee, Young Hong Kwak, Ki Young Kwon, Jin Kook Kong, Soo Hyung Woo, Jin Soon Kim, Kyoung Joon Chang
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Publication number: 20090293825Abstract: A variable valve lift apparatus may include a camshaft having an input cam, a rocker arm shaft disposed in parallel with the camshaft with a distance therebetween, a shaft carrier with a camshaft and a rocker arm shaft, a rocker arm that is mounted on the rocker arm shaft with a first roller contacting the input cam, a first link connected to the rocker arm, an amplification lever with a middle portion thereof connected to the first link and the shaft carrier, a second link connected to the amplification lever, an output cam mounted on the camshaft, one side of the output cam connected to the second link, and a profile portion formed at an exterior circumference thereof, a variable driveshaft rotating the shaft carrier by a predetermined angle, and a valve moved by the profile portion with rotation of the output cam.Type: ApplicationFiled: November 20, 2008Publication date: December 3, 2009Applicant: HYUNDAI MOTOR COMPANYInventors: Eun Ho Lee, Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Soo Hyung Woo, Kyoung Joon Chang
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Publication number: 20090288622Abstract: The CVVL device includes a rocking cam having a rolling face contacting a rocker arm is formed to press the rocker arm when pivoted, a rocking roller, which is disposed above the drive cam and rolls on an outer circumference of the drive cam, a control apparatus, which changes a position of the rocking roller rolling on the outer circumference of the drive cam; and a rocking apparatus, which pivots the rocking cam according to a position of the rocking roller such that a position where the rocker arm is contacted with the rolling face is changed depending on the position of the rocking roller.Type: ApplicationFiled: December 8, 2008Publication date: November 26, 2009Applicant: Hyundai Motor CompanyInventors: Ki Young Kwon, Young Hong Kwak, Eun Ho Lee, Soo Hyung Woo, Young Nam Kim, Jin Kook Kong
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Publication number: 20090151694Abstract: A variable lift apparatus of an engine for a vehicle may include a camshaft in which a cam is formed, a swing arm one side of which is supported by a supporting portion and another side of which operates a valve, an output arm including a roller press portion extended in one direction and a rotating arm extended in another direction, a first roller disposed in the connecting portion in which the rotating arm and the roller press portion are connected and that contacts the cam, a second roller disposed in the swing arm and contacting a roller contacting surface, a variable link connected with a lower end side of the rotating arm protruding in a lower side of the output arm by a hinge shaft and moves the hinge shaft according to a guide slot formed in a guide and a variable rotation shaft for operating the variable link.Type: ApplicationFiled: November 7, 2008Publication date: June 18, 2009Applicant: Hyundai Motor CompanyInventors: Young Hong KWAK, Kiyoung Kwon, Jin Kook Kong, Kyoung Joon Chang
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Publication number: 20090151682Abstract: A variable valve lift apparatus according to an exemplary embodiment of the present invention includes a low lift cam, a high lift cam in parallel with the low lift cam, a low lift tappet body that selectively contacts the low lift cam, a high lift tappet body disposed within the low lift tappet body and constantly contacting the high lift cam, a guide portion that is connected with a valve and selectively connects the low lift tappet body and the high lift tappet body, and a lost motion spring that is disposed between the guide portion and the low lift tappet body and supplies restoring force to the low lift tappet body.Type: ApplicationFiled: June 24, 2008Publication date: June 18, 2009Applicant: Hyundai Motor CompanyInventors: Young Hong Kwak, Kiyoung Kwon, Ki Uk Shin, Jin Kook Kong
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Publication number: 20090151664Abstract: A continuous variable valve lift apparatus according to an exemplary embodiment of the present invention includes an input cam disposed to an input shaft, a first shaft in parallel with the input shaft, a first link connected with the first shaft, a second link rotatably connected to the first link, an output cam that is rotatably connected with the second link and configured with a contact portion contacting the input cam, a second shaft disposed to the output cam parallel with the input shaft, at least one valve unit that is opened and closed by the output cam, and a control part that controls a position of the second shaft.Type: ApplicationFiled: June 20, 2008Publication date: June 18, 2009Applicant: Hyundai Motor CompanyInventors: Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Kyoung Joon Chang