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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Publication number: 20140041605Abstract: An electro-hydraulic variable valve lift apparatus may include an hydraulic pump body installed in an engine, a piston provided to reciprocate within the hydraulic pump body and forming an hydraulic pump chamber together with the hydraulic pump body, an hydraulic pump cam disposed to be in contact with the piston and enabling the piston to reciprocate according to a rotation thereof, a retainer provided to be slidable along the piston between the piston and the engine and forming a retainer chamber with the engine, a retainer spring elastically supporting the retainer, an oil control valve allowing the hydraulic pump chamber and the retainer chamber to selectively communicate with each other, a valve opening and closing unit communicating with the hydraulic pump chamber and opened or closed according to oil pressure supplied from the hydraulic pump chamber.Type: ApplicationFiled: December 11, 2012Publication date: February 13, 2014Applicant: Hyundai Motor CompanyInventors: Soo Hyung Woo, Byong Young Choi, Young Hong Kwak, Jin Kook Kong, Wonjun Lee
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Patent number: 8607751Abstract: An electro-hydro valve lift system may include a drive cam, a pump piston, a first and a second EHV apparatus, a first oil control valve, a first oil control hydraulic line fluid-communicating the main chamber with the first oil control valve, a second oil control hydraulic line fluid-communicating the first oil control valve with the first EHV apparatus, a third oil control hydraulic line fluid-communicating the main chamber with the second EHV apparatus, a fourth oil control hydraulic line selectively fluid-communicated with the second oil control hydraulic line according to the first oil control valve, an accumulator fluid-communicated with the fourth oil control hydraulic line, and a second oil control valve disposed on the fourth oil control hydraulic line, wherein the fourth oil control hydraulic line is fluid-communicated with the third oil control hydraulic line according to the second oil control valve.Type: GrantFiled: June 20, 2012Date of Patent: December 17, 2013Assignee: Hyundai Motor CompanyInventors: Jei Choon Yang, Byong Young Choi, Young Hong Kwak, Wonjun Lee, Jin Kook Kong, Soo Hyung Woo
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Patent number: 8573168Abstract: A hydraulic pressure valve apparatus includes a housing of which a first chamber and a second chamber are formed therein, wherein a diameter of the second chamber is bigger than that of the first chamber, a first piston disposed within the first chamber, an elastic portion disposed within the first chamber for elastically supporting the first piston and a second piston disposed within the second chamber and connected to a valve.Type: GrantFiled: December 8, 2011Date of Patent: November 5, 2013Assignee: Hyundai Motor CompanyInventors: Jei Choon Yang, Chang Ho Yang, Byong Young Choi, Young Hong Kwak, Jin Kook Kong, Soo Hyung Woo
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Patent number: 8499725Abstract: A variable compression ratio apparatus may include a connecting rod provided with one end formed of a mounting hole and the other end eccentrically and rotatably connected to a crankshaft, wherein a piston pin may be inserted in the mounting hole and the connecting rod may be rotatably connected to the piston through the piston pin, an eccentric link provided with an eccentric bearing concentrically and rotatably mounted in the mounting hole may be connected and, the piston pin being eccentrically and rotatably mounted in the eccentric bearing, a variable link pivotally connected to the eccentric link, a variable gear link pivotal with respect to a fixed shaft and having a first gear teeth at an exterior circumference thereof, an external circumferential portion thereof being rotatably connected to the variable link, and a control shaft formed of a second gear teeth engaged to the first gear teeth.Type: GrantFiled: November 15, 2010Date of Patent: August 6, 2013Assignee: Hyundai Motor CompanyInventors: Dong Seok Lee, Jei Choon Yang, Yen Wha Ryu, Eun Ho Lee, Young Hong Kwak, Jin Kook Kong, Soo Hyung Woo
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Patent number: 8464677Abstract: A variable valve lift apparatus includes a high cam and a low cam fixed side by side to a camshaft, an outer body pressed by the rotation of the high cam, and has a crossbar formed at the bottom of the front end, an inner body, of which the front end protrudes further than the outer body, the lower front end is provided with a valve member, the upper rear end is hinged to a lost motion hinge shaft coaxially with the rear end of the outer body, and the lower rear end is pivotally connected to a hinge member, and a latching portion inserted into the inner body and selectively connected to the crossbar of the outer body to move the inner body dependent on movement of the front end of the outer body, wherein the lost motion hinge shaft is disposed in the same direction as a hinge point between the inner body and the hinge member with respect to the camshaft.Type: GrantFiled: July 25, 2011Date of Patent: June 18, 2013Assignee: Hyundai Motor CompanyInventors: Byong Young Choi, Young Hong Kwak, Gee-Wook Shin, Yoonsik Woo, Jin Kook Kong, Soo-Hyung Woo
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Publication number: 20130146002Abstract: An electro-hydro valve lift system may include a drive cam, a pump piston, a first and a second EHV apparatus, a first oil control valve, a first oil control hydraulic line fluid-communicating the main chamber with the first oil control valve, a second oil control hydraulic line fluid-communicating the first oil control valve with the first EHV apparatus, a third oil control hydraulic line fluid-communicating the main chamber with the second EHV apparatus, a fourth oil control hydraulic line selectively fluid-communicated with the second oil control hydraulic line according to the first oil control valve, an accumulator fluid-communicated with the fourth oil control hydraulic line, and a second oil control valve disposed on the fourth oil control hydraulic line, wherein the fourth oil control hydraulic line is fluid-communicated with the third oil control hydraulic line according to the second oil control valve.Type: ApplicationFiled: June 20, 2012Publication date: June 13, 2013Applicant: Hyundai Motor CompanyInventors: Jei Choon Yang, Byong Young Choi, Young Hong Kwak, Wonjun Lee, Jin Kook Kong, Soo Hyung Woo
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Publication number: 20120291889Abstract: An oil control valve includes a housing having a control port and a drain port, a first seat with a first penetration hole forming a first chamber, a second seat with a second penetration hole forming a second chamber communicated with the control port, the second seat with the housing forming a third chamber communicating with the drain port, a first check valve within the first chamber selectively closing the first penetration hole, a second check valve within the third chamber selectively closing the second penetration hole, and a third penetration hole, a control portion selectively opening the first check valve and simultaneously closing the second check valve or selectively closing the first check valve and simultaneously opening the second check valve and an orifice connecting the first chamber with the second chamber.Type: ApplicationFiled: December 6, 2011Publication date: November 22, 2012Applicants: Unick Corporation, Hyundai Motor CompanyInventors: Byong Young CHOI, Young Hong KWAK, Gee Wook SHIN, Jin Kook KONG, Soo Hyung WOO, Chang-Hoon LEE
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Patent number: 8312852Abstract: 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: GrantFiled: July 29, 2010Date of Patent: November 20, 2012Assignee: 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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Publication number: 20120280162Abstract: A hydraulic pressure valve apparatus includes a housing of which a first chamber and a second chamber are formed therein, wherein a diameter of the second chamber is bigger than that of the first chamber, a first piston disposed within the first chamber, an elastic portion disposed within the first chamber for elastically supporting the first piston and a second piston disposed within the second chamber and connected to a valve.Type: ApplicationFiled: December 8, 2011Publication date: November 8, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Jei Choon YANG, Chang Ho Yang, Byong Young Choi, Young Hong Kwak, Jin Kook Kong, Soo Hyung Woo
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Patent number: 8291874Abstract: 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: GrantFiled: October 5, 2009Date of Patent: October 23, 2012Assignee: 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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Patent number: 8291875Abstract: 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: GrantFiled: November 24, 2009Date of Patent: October 23, 2012Assignee: 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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Patent number: 8251027Abstract: 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: GrantFiled: July 31, 2009Date of Patent: August 28, 2012Assignee: 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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Patent number: 8245676Abstract: 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: GrantFiled: July 13, 2010Date of Patent: August 21, 2012Assignees: 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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Publication number: 20120118251Abstract: A hydraulic pressure variable valve lift apparatus may include a housing that a piston chamber that one side thereof is opened is formed, a valve operating piston that is slidably disposed in the piston chamber and one end thereof is connected to a valve for opening/closing a port, and an EHV hydraulic pump that is configured to supply the piston chamber with oil, wherein a first oil passage is formed between the EHV hydraulic pump and the piston chamber on as to supply a side surface of the piston chamber with oil, and an orifice hole is formed from a piston side surface of the valve operating piston to a piston upper end surface. Accordingly, the valve lift amount can be varied according to the operating condition of the engine, a hydraulic pressure variable valve lift apparatus reduces an impact at a moment when the valve is closed by having a valve lift formed a ramp profile and does not require accurate process of multi orifice and thereby decreases a production cost.Type: ApplicationFiled: July 12, 2011Publication date: May 17, 2012Applicant: Hyundai Motor CompanyInventors: Byong Young Choi, Young Hong Kwak, Gee Wook Shin, Jin Kook Kong, Soo Hyung Woo, Jin Soon Kim
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Publication number: 20120097878Abstract: A variable valve lift apparatus includes a high cam and a low cam fixed side by side to a camshaft, an outer body pressed by the rotation of the high cam, and has a crossbar formed at the bottom of the front end, an inner body, of which the front end protrudes further than the outer body, the lower front end is provided with a valve member, the upper rear end is hinged to a lost motion hinge shaft coaxially with the rear end of the outer body, and the lower rear end is pivotally connected to a hinge member, and a latching portion inserted into the inner body and selectively connected to the crossbar of the outer body to move the inner body dependent on movement of the front end of the outer body, wherein the lost motion hinge shaft is disposed in the same direction as a hinge point between the inner body and the hinge member with respect to the camshaft.Type: ApplicationFiled: July 25, 2011Publication date: April 26, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Byong Young Choi, Young Hong Kwak, Gee-Wook Shin, Yoonsik Woo, Jin Kook Kong, Soo-Hyung Woo
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Patent number: 8146548Abstract: 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: GrantFiled: July 21, 2009Date of Patent: April 3, 2012Assignee: 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: 20120048219Abstract: A variable valve lift apparatus may include a camshaft, a low lift cam which may be connected to the camshaft and rotates, a high lift cam which may be rotatably mounted to the camshaft and may be selectively connected to the camshaft to rotate with the camshaft, a high lift cam connecting portion which selectively connects the high lift cam to the camshaft, and a tappet including a low lift cam contact portion contacting the low lift cam and a high lift cam contact portion selectively activating the high lift cam.Type: ApplicationFiled: November 17, 2010Publication date: March 1, 2012Applicant: Hyundai Motor CompanyInventors: Byong Young Choi, Jin Kook Kong, Soo Hyung Woo, Young Hong Kwak, Gee Wook Shin, Jei Choon Yang, Chang Ho Yang
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Publication number: 20120042854Abstract: A variable compression ratio apparatus may include a connecting rod provided with one end formed of a mounting hole and the other end eccentrically and rotatably connected to a crankshaft, wherein a piston pin may be inserted in the mounting hole and the connecting rod may be rotatably connected to the piston through the piston pin, an eccentric link provided with an eccentric bearing concentrically and rotatably mounted in the mounting hole may be connected and, the piston pin being eccentrically and rotatably mounted in the eccentric bearing, a variable link pivotally connected to the eccentric link, a variable gear link pivotal with respect to a fixed shaft and having a first gear teeth at an exterior circumference thereof, an external circumferential portion thereof being rotatably connected to the variable link, and a control shaft formed of a second gear teeth engaged to the first gear teeth.Type: ApplicationFiled: November 15, 2010Publication date: February 23, 2012Applicant: Hyundai Motor CompanyInventors: Dong Seok LEE, Jei Choon YANG, Yen Wha RYU, Eun Ho LEE, Young Hong KWAK, Jin Kook KONG, Soo Hyung WOO
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Patent number: 8104440Abstract: 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: GrantFiled: December 8, 2008Date of Patent: January 31, 2012Assignee: 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: 20110272612Abstract: A variable valve lift apparatus may include an opening/closing portion, a low lift cam which selectively contacts the opening/closing portion, a high lift cam which may be disposed parallel to the low lift cam, a control portion, a pad hinge connected to the control portion, and a pad, an end of which may be pivotally coupled to the pad hinge, the pad slidably contacting the high lift cam and the opening/closing portion, wherein, the control portion selectively changes position of the pad hinge.Type: ApplicationFiled: November 8, 2010Publication date: November 10, 2011Applicant: Hyundai Motor CompanyInventors: Byong-Young Choi, Young-Hong Kwak, Ki-Young Kwon, Sang-Won Kim, Jin-Kook Kong, Soo-Hyung Woo