Patents by Inventor Wan Soo Oh
Wan Soo Oh 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: 10100899Abstract: The present disclosure provides an apparatus for reducing vibration of a vehicle including; a lug which connects an engine to a torque converter and forms a predetermined gap between the engine and the torque converter; and an inertial body which is connected to the lug between the engine and the torque converter. the inertial body moves in a rotational direction or a reverse rotational direction of the torque converter in accordance with the rotation of the torque converter.Type: GrantFiled: November 10, 2015Date of Patent: October 16, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Wan Soo Oh, Jang Won Lee, Jae Woong Hwang
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Patent number: 10018135Abstract: A method for controlling engine revolution per minute (RPM) includes: a frequency deriving process for deriving a frequency from change in engine RPM detected by a detector by a controller during driving of the engine; a frequency conversion process for converting a derivation frequency derived in the frequency deriving process into a conversion frequency via a predetermined conversion process by the controller; a frequency comparison process for comparing an amplitude of the conversion frequency at which engine RPM is to be changed among conversion frequencies converted in the frequency conversion process with an amplitude of a reference frequency pre-inputted to the controller; and a fuel injection amount adjusting process for deriving a correction value based on a result derived in the frequency comparison process, for applying the derived correction value, and for controlling an injector by the controller to adjust a fuel injection amount.Type: GrantFiled: May 31, 2016Date of Patent: July 10, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Wan Soo Oh, Heung Seok Lee
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Patent number: 9869366Abstract: An apparatus for reducing vibration for vehicles may include discs rotated in connection with an engine rotating shaft, a plurality of masses provided at the circumferential parts of the discs, and a plurality of connection elements provided between the masses, a first end of each of the connection elements being hinged to the disc and both sides of a second end of each of the connection elements being connected to different adjacent masses.Type: GrantFiled: November 23, 2015Date of Patent: January 16, 2018Assignee: Hyundai Motor CompanyInventors: Wan Soo Oh, Jang Won Lee, Jae Woong Hwang
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Patent number: 9784358Abstract: A device for noise vibration reduction of an alternator's pulley includes a pulley part combined with a rotating shaft of the alternator and also has a pendulum damper adapter part inserted into the pulley. In particular, the pendulum damper adapter part includes a pendulum pamper part and rotate or reciprocate the pendulum damper part to generate a vibration having the same frequency as but an opposite phase to a vibration of the pulley part so as to reduce the vibration of the pulley part.Type: GrantFiled: August 31, 2015Date of Patent: October 10, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: Wan-Soo Oh, Heung-Seok Lee
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Patent number: 9777650Abstract: The present disclosure relates to a system for controlling vibration of an engine including an engine inertia portion which rotates together with the engine and a sub-inertia portion which influences a rotation speed of the engine and is separately provided, and a damper which is disposed between the engine inertia portion and the sub-inertia portion for reducing a vibration. The present disclosure includes: determining whether a vehicle is in an idle state; sensing rotation speeds of the engine inertia portion and the sub-inertia portion, respectively; calculating an average value of the rotation speeds of the engine inertia portion and the sub-inertia portion; calculating an error value from the average value; and PI controlling by receiving the error value.Type: GrantFiled: December 1, 2015Date of Patent: October 3, 2017Assignee: Hyundai Motor CompanyInventors: Wan Soo Oh, Seok Young Shin, Heungseok Lee
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Patent number: 9702430Abstract: An apparatus for damping of a flywheel, which is configured so that a second mass may rotate in a direction for offsetting torsional vibration of an engine transmitted to a first mass through a damping spring. The apparatus includes: guides disposed between damping springs and guiding the damping springs extending/contracting in a rotational direction by a damping operation; and a third mass arranged coaxially with the second mass, with one end connected to the guide, and relatively rotating in a direction for offsetting torsional vibration of the engine transmitted to the second mass.Type: GrantFiled: July 14, 2016Date of Patent: July 11, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: Wan Soo Oh, Heung Seok Lee, Yong Wook Jin, Jae Woong Hwang
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Publication number: 20170114742Abstract: A method for controlling engine revolution per minute (RPM) includes: a frequency deriving process for deriving a frequency from change in engine RPM detected by a detector by a controller during driving of the engine; a frequency conversion process for converting a derivation frequency derived in the frequency deriving process into a conversion frequency via a predetermined conversion process by the controller; a frequency comparison process for comparing an amplitude of the conversion frequency at which engine RPM is to be changed among conversion frequencies converted in the frequency conversion process with an amplitude of a reference frequency pre-inputted to the controller; and a fuel injection amount adjusting process for deriving a correction value based on a result derived in the frequency comparison process, for applying the derived correction value, and for controlling an injector by the controller to adjust a fuel injection amount.Type: ApplicationFiled: May 31, 2016Publication date: April 27, 2017Applicant: Hyundai Motor CompanyInventors: Wan Soo OH, Heung Seok LEE
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Publication number: 20170102046Abstract: A flywheel assembly includes a flywheel mounted to a crankshaft of an engine to be integrally rotated therewith, and at least one centrifugal pendulum damper installed to be reciprocally moved inside the flywheel.Type: ApplicationFiled: September 29, 2016Publication date: April 13, 2017Inventor: Wan Soo OH
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Publication number: 20170082170Abstract: A damper apparatus for an alternator pulley uses a mass inertia body installed on a same axis as the alternator pulley to promote absorption of vibrations and removal of noises occurring due to a resonance of the alternator.Type: ApplicationFiled: November 25, 2015Publication date: March 23, 2017Applicant: HYUNDAI MOTOR COMPANYInventor: Wan Soo OH
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Publication number: 20170074195Abstract: The present disclosure relates to a system for controlling vibration of an engine including an engine inertia portion which rotates together with the engine and a sub-inertia portion which influences a rotation speed of the engine and is separately provided, and a damper which is disposed between the engine inertia portion and the sub-inertia portion for reducing a vibration. The present disclosure includes: determining whether a vehicle is in an idle state; sensing rotation speeds of the engine inertia portion and the sub-inertia portion, respectively; calculating an average value of the rotation speeds of the engine inertia portion and the sub-inertia portion; calculating an error value from the average value; and PI controlling by receiving the error value.Type: ApplicationFiled: December 1, 2015Publication date: March 16, 2017Applicant: Hyundai Motor CompanyInventors: Wan Soo OH, Seok Young SHIN, Heungseok LEE
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Publication number: 20170058992Abstract: An apparatus for reducing vibration for vehicles may include discs rotated in connection with a rotating shaft of an engine, a plurality of masses provided at the circumferential parts of the discs, and a plurality of connection elements provided between the masses, a first end of each of the connection elements being hinged to the disc and both sides of a second end of each of the connection elements being connected to different adjacent masses.Type: ApplicationFiled: November 23, 2015Publication date: March 2, 2017Applicant: Hyundai Motor CompanyInventors: Wan Soo OH, Jang Won LEE, Jae Woong HWANG
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Publication number: 20160352183Abstract: An alternator unit having a vibration reducing damper includes first rotating member, and second rotating member connected by a clutch member. A pulley is rotatably disposed on either the first rotating member or the second rotating member by a bearing and receives torque from outside. A first damper plate is fixed to one side of the pulley, and first spring grooves are radially spaced apart at a predetermined distance. A pair of second damper plates each have one side fixed to the second rotating member and are spaced apart from the first damper plate. The second damper plates have second spring grooves formed at positions corresponding to the first spring grooves. Damper springs are inserted into the first and second spring grooves, and transmit torque to the second damper plates and the second rotating member to absorb a rotational difference and attenuate vibration using compressive elastic force.Type: ApplicationFiled: October 16, 2015Publication date: December 1, 2016Applicant: HYUNDAI MOTOR COMPANYInventor: Wan Soo OH
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Publication number: 20160333962Abstract: The present disclosure provides an apparatus for reducing vibration of a vehicle including; a lug which connects an engine to a torque converter and forms a predetermined gap between the engine and the torque converter; and an inertial body which is connected to the lug between the engine and the torque converter. the inertial body moves in a rotational direction or a reverse rotational direction of the torque converter in accordance with the rotation of the torque converter.Type: ApplicationFiled: November 10, 2015Publication date: November 17, 2016Applicant: HYUNDAI MOTOR COMPANYInventors: Wan Soo OH, Jang Won LEE, Jae Woong Hwang
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Publication number: 20160319901Abstract: An apparatus for damping of a flywheel, which is configured so that a second mass may rotate in a direction for offsetting torsional vibration of an engine transmitted to a first mass through a damping spring. The apparatus includes: guides disposed between damping springs and guiding the damping springs extending/contracting in a rotational direction by a damping operation; and a third mass arranged coaxially with the second mass, with one end connected to the guide, and relatively rotating in a direction for offsetting torsional vibration of the engine transmitted to the second mass.Type: ApplicationFiled: July 14, 2016Publication date: November 3, 2016Inventors: Wan Soo OH, Heung Seok LEE, Yong Wook JIN, Jae Woong HWANG
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Patent number: 9463802Abstract: A control method for shifting in a manual transmission vehicle may include sensing tip-out while the vehicle travels; operating a tip-out torque filter when the tip-out is sensed; determining whether a switch of a clutch of the vehicle is turned on; stopping fuel injection by stopping the tip-out torque filter when the switch of the clutch is turned on, and reducing rotation speed of an engine by controlling a throttle flap of the vehicle.Type: GrantFiled: August 22, 2012Date of Patent: October 11, 2016Assignee: Hyundai Motor CompanyInventors: Chang Kook Chae, Heungseok Lee, Sukil Oh, Wan Soo Oh, Jin Hyun Kim, Koo Tae Kang
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Publication number: 20160223067Abstract: A device for noise vibration reduction of an alternator's pulley includes a pulley part combined with a rotating shaft of the alternator and also has a pendulum damper adapter part inserted into the pulley. In particular, the pendulum damper adapter part includes a pendulum pamper part and rotate or reciprocate the pendulum damper part to generate a vibration having the same frequency as but an opposite phase to a vibration of the pulley part so as to reduce the vibration of the pulley part.Type: ApplicationFiled: August 31, 2015Publication date: August 4, 2016Applicant: HYUNDAI MOTOR COMPANYInventors: Wan-Soo Oh, Heung-Seok Lee
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Publication number: 20160146702Abstract: A method for detecting a surge level in a vehicle based on a combustion pressure in a cylinder includes determining an IMEP parameter which determines stability of combustion according to a covariance of an IMEP. A PPP parameter, which varies the covariance of the IMEP and determines stability of combustion according to a variance in an angle of rotation of a crank when the combustion pressure reaches the highest point, is determined. A BD parameter, which varies both the the covariance of the IMEP and the angle of rotation of the crank and determines the stability of combustion according to a variance in the angle of rotation of the crank when a set range of amount of fuel is burned in the cylinder, is determined. An RPM parameter, which determines a surge level according to a variance in an RPM of an engine, is determined.Type: ApplicationFiled: April 9, 2015Publication date: May 26, 2016Inventors: Heung Seok LEE, Wan Soo OH
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Patent number: 9347392Abstract: A control system and a control method of a gasoline direct injection engine may include determining whether the engine is stopped and can improve NVH of a vehicle by keeping the fuel high-pressure pump input valve of the high-pressure pump operating for a predetermined time and preventing fuel from flowing backward to the low-pressure pump.Type: GrantFiled: December 12, 2012Date of Patent: May 24, 2016Assignee: Hyundai Motor CompanyInventors: Heungseok Lee, Wan Soo Oh
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Patent number: 9291252Abstract: An alternator pulley, a mounting structure of an alternator pulley, and an alternator for a vehicle are configured to reduce vibration by mounting an adaptor which includes a pendulum on the alternator pulley, by reacting a pendulum vibration with a belt vibration which have inverse phases to each other, and by completely press-fitting the adaptor to the alternator pulley without backlash. The alternator pulley, mounting structure and alternator may include a pulley body configured to be coupled with an alternator shaft and receiving power by a belt and an adaptor coupled with the pulley body and absorbs vibration caused by power delivery, wherein the adaptor may further include at least one pendulum for absorbing vibration caused by the power delivery.Type: GrantFiled: December 24, 2013Date of Patent: March 22, 2016Assignee: Hyundai Motor CompanyInventor: Wan Soo Oh
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Patent number: 9273779Abstract: A manual transmission for vehicles minimizes rotational inertia and improves rattle as a consequence of preventing unnecessary idling of a first speed gear and a reverse speed gear by maintaining a first input gear to be a free gear state at all shift-speeds except a first forward speed and a reverse speed.Type: GrantFiled: July 28, 2014Date of Patent: March 1, 2016Assignee: HYUNDAI MOTOR COMPANYInventors: Wan Soo Oh, Jae Woong Hwang, Haeng Woo Park