Patents by Inventor Heungseok Lee
Heungseok Lee 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: 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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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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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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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: 9140200Abstract: An idle throttle valve control method of a diesel vehicle, may include a first step of determining whether an idle entry condition of the vehicle may be satisfied, a second step of controlling a throttle valve based on an air amount map and controlling an exhaust gas recirculation (EGR) valve based on an EGR map, when the first step may be satisfied, a third step of determining whether an idle release condition may be satisfied during the second step, and a fourth step of determining whether an EGR return condition may be satisfied, when the idle release condition may be satisfied in the third step.Type: GrantFiled: December 8, 2011Date of Patent: September 22, 2015Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Heungseok Lee, Chang Kook Chae, Sukil Oh, Wan Soo Oh, Jin Hyun Kim, Koo Tae Kang, Kwang Min Won
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Patent number: 9062625Abstract: A fuel control system and fuel control method of gasoline direct injection engine can improve noise vibration harshness (NVH) by preventing fuel from flowing backward into a low pressure pump by determining whether the ignition of the engine is turned off and maintaining the operation of an inlet valve of a high pressure pump for a predetermined time when the ignition of the engine is determined to be turned off.Type: GrantFiled: December 31, 2012Date of Patent: June 23, 2015Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Heungseok Lee, Wan Soo Oh, Yong Wook Jin
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Patent number: 8818666Abstract: A method for controlling a damper clutch may include determining whether the damper clutch is in a slip or lock-up state in a driving state of a vehicle, determining whether a condition of the vehicle is within a predetermined resonant range, determining whether a torque of the vehicle is within a predetermined resonant torque range, detecting a subharmonic vibration when the damper clutch is in the slip or lock-up state, the condition of the vehicle is within the predetermined resonant range, and the torque of the vehicle is within the predetermined resonant torque range, and controlling the damper clutch to slip or be open when the subharmonic vibration is larger than a predetermined value.Type: GrantFiled: September 14, 2012Date of Patent: August 26, 2014Assignee: Hyundai Motor CompanyInventors: Chang Kook Chae, Heungseok Lee, Sukil Oh, Wan Soo Oh, Jin Hyun Kim
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Patent number: 8789510Abstract: A throttle valve device including a throttle valve control logic may include an electronic controller that determines whether a driving state of a vehicle is an idle-driving state from electronic signals supplied from sensors, a desired air amount map unit that is electrically connected with the electronic controller and where a desired amount of air according to RPM of an engine and an amount of injected fuel for idle-driving are set; and a governor for controlling an EGR valve and a governor for controlling a throttle valve that are electrically connected with the electronic controller and the desired air amount map unit and control the driving of the EGR valve and the throttle valve, respectively, such that the desired amount of air output in accordance with the RPM of the engine of the vehicle and an amount of the injected fuel is supplied to the engine in the idle-driving.Type: GrantFiled: October 28, 2011Date of Patent: July 29, 2014Assignee: Hyundai Motor CompanyInventors: Heungseok Lee, Jaemin Jin, Sukil Oh, Dongchul Lee, Insoo Jung
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Publication number: 20140121943Abstract: 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: ApplicationFiled: December 12, 2012Publication date: May 1, 2014Applicant: Hyundai Motor CompanyInventors: Heungseok LEE, Wan Soo Oh
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Publication number: 20140100759Abstract: A fuel control system and fuel control method of gasoline direct injection engine can improve noise vibration harshness (NVH) by preventing fuel from flowing backward into a low pressure pump by determining whether the ignition of the engine is turned off and maintaining the operation of an inlet valve of a high pressure pump for a predetermined time when the ignition of the engine is determined to be turned off.Type: ApplicationFiled: December 31, 2012Publication date: April 10, 2014Applicants: Kia Motors Corporation, Hyundai Motor CompanyInventors: Heungseok Lee, Wan Soo Oh, Yong Wook Jin
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Publication number: 20130151099Abstract: A method for controlling a damper clutch may include determining whether the damper clutch is in a slip or lock-up state in a driving state of a vehicle, determining whether a condition of the vehicle is within a predetermined resonant range, determining whether a torque of the vehicle is within a predetermined resonant torque range, detecting a subharmonic vibration when the damper clutch is in the slip or lock-up state, the condition of the vehicle is within the predetermined resonant range, and the torque of the vehicle is within the predetermined resonant torque range, and controlling the damper clutch to slip or be open when the subharmonic vibration is larger than a predetermined value.Type: ApplicationFiled: September 14, 2012Publication date: June 13, 2013Applicant: Hyundai Motor CompanyInventors: Chang Kook CHAE, Heungseok Lee, Sukil Oh, Wan Soo Oh, Jin Hyun Kim
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Publication number: 20130150213Abstract: 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: ApplicationFiled: August 22, 2012Publication date: June 13, 2013Applicant: 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: 20130151090Abstract: A vehicle speed control system and method controls vehicle speed when a constant speed travel system for a vehicle operates. The system includes a detector that detects travel speed of the vehicle, a throttle valve opening/closing unit that opens/closes a throttle valve in the vehicle, a brake control unit that controls the operation of a brake in the vehicle, a transmission control unit that changes shift stages of a transmission in the vehicle, and a control unit that extracts the difference between a travel speed and a desired speed and controls the throttle valve opening/closing unit, the brake control unit, and the transmission control unit to gradually operate in accordance with the extracted speed difference value, when the travel speed received from the speed detector is larger than the desired speed set in the constant speed travel system.Type: ApplicationFiled: August 17, 2012Publication date: June 13, 2013Applicant: Hyundai Motor CompanyInventors: Chang Kook Chae, Heungseok Lee, Sukil Oh, Wan Soo Oh, Jin Hyun Kim
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Publication number: 20130151108Abstract: A method for controlling an engine torque, may include determining an engagement degree of a clutch in a transmission while a vehicle travels, determining whether a state of the vehicle corresponds to a resonance region where abnormal vibration may be generated by a rigidity change according to the engagement degree, determining whether torque in the vehicle corresponds to a resonance torque region where abnormal vibration may be generated by a rigidity change according to the engagement degree, checking a sub-harmonic value when the engagement degree may be a predetermined degree or more and the vehicle may be in the resonance region and the resonance torque region, and controlling the engine torque to avoid a rigidity change torque when the checked sub-harmonic value may be over a first predetermined value.Type: ApplicationFiled: August 22, 2012Publication date: June 13, 2013Applicant: Hyundai Motor CompanyInventors: Chang Kook Chae, Heungseok Lee, Sukil Oh, Wan Soo Oh, Jin Hyun Kim
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Publication number: 20130037001Abstract: An idle throttle valve control method of a diesel vehicle, may include a first step of determining whether an idle entry condition of the vehicle may be satisfied, a second step of controlling a throttle valve based on an air amount map and controlling an exhaust gas recirculation (EGR) valve based on an EGR map, when the first step may be satisfied, a third step of determining whether an idle release condition may be satisfied during the second step, and a fourth step of determining whether an EGR return condition may be satisfied, when the idle release condition may be satisfied in the third step.Type: ApplicationFiled: December 8, 2011Publication date: February 14, 2013Applicants: Kia Motors Corporation, Hyundai Motor CompanyInventors: Heungseok Lee, Chang Kook Chae, Sukil Oh, Wan Soo Oh, Jin Hyun Kim, Koo Tae Kang, Kwang Min Won
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Publication number: 20120132175Abstract: A throttle valve device including a throttle valve control logic may include an electronic controller that determines whether a driving state of a vehicle is an idle-driving state from electronic signals supplied from sensors, a desired air amount map unit that is electrically connected with the electronic controller and where a desired amount of air according to RPM of an engine and an amount of injected fuel for idle-driving are set; and a governor for controlling an EGR valve and a governor for controlling a throttle valve that are electrically connected with the electronic controller and the desired air amount map unit and control the driving of the EGR valve and the throttle valve, respectively, such that the desired amount of air output in accordance with the RPM of the engine of the vehicle and an amount of the injected fuel is supplied to the engine in the idle-driving.Type: ApplicationFiled: October 28, 2011Publication date: May 31, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Heungseok Lee, Jaemin Jin, Sukil Oh, Dongchul Lee, Insoo Jung