Patents by Inventor Eui Chul Choi
Eui Chul Choi 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: 10767546Abstract: A method for cooling the engine for the vehicle applying the turbocharger may include comparing an average fuel consumption amount that determines, by a control unit, for controlling the operation of the engine and the circulation of the coolant, whether an average fuel consumption amount consumed in the engine immediately before the start-off of the engine is greater than a predetermined after-start-up cooling entrance average fuel consumption amount when the vehicle is started-off after a high load operation, and maximally cooling that controls, by the control unit, so that the coolant cooled in a radiator is circulated into the engine and the turbocharger by maximally opening a thermostat for controlling, and operating a water pump, when the average fuel consumption amount consumed in the engine immediately before a start-off of the engine is greater than the predetermined after-start-up cooling entrance average fuel consumption amount in the comparing the average fuel consumption amount.Type: GrantFiled: September 17, 2019Date of Patent: September 8, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Su-Ho Lee, Eui-Chul Choi, Jun-Sik Park
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Publication number: 20200116071Abstract: A method for cooling the engine for the vehicle applying the turbocharger may include comparing an average fuel consumption amount that determines, by a control unit, for controlling the operation of the engine and the circulation of the coolant, whether an average fuel consumption amount consumed in the engine immediately before the start-off of the engine is greater than a predetermined after-start-up cooling entrance average fuel consumption amount when the vehicle is started-off after a high load operation, and maximally cooling that controls, by the control unit, so that the coolant cooled in a radiator is circulated into the engine and the turbocharger by maximally opening a thermostat for controlling, and operating a water pump, when the average fuel consumption amount consumed in the engine immediately before a start-off of the engine is greater than the predetermined after-start-up cooling entrance average fuel consumption amount in the comparing the average fuel consumption amount.Type: ApplicationFiled: September 17, 2019Publication date: April 16, 2020Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Su-Ho LEE, Eui-Chul CHOI, Jun-Sik PARK
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Patent number: 9658131Abstract: The present disclosure provides a testing apparatus of an auxiliary belt system. The testing apparatus of the auxiliary belt system includes: a tester bracket, a torque pulse simulation motor mounted to the tester bracket, a crankshaft pulley mounted to the tester bracket and rotated by operations of the torque pulse simulation motor, an auxiliary system mounted to the tester bracket, connected to the crankshaft pulley through a belt and rotated by rotation of the crankshaft pulley and a controller controlling operations of the torque pulse simulation motor.Type: GrantFiled: September 14, 2015Date of Patent: May 23, 2017Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Jong Won Lee, Key Chun Park, Eui Chul Choi, Yong Woo Kim, Jae Ik Ahn
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Publication number: 20160266007Abstract: The present disclosure provides a testing apparatus of an auxiliary belt system. The testing apparatus of the auxiliary belt system includes: a tester bracket, a torque pulse simulation motor mounted to the tester bracket, a crankshaft pulley mounted to the tester bracket and rotated by operations of the torque pulse simulation motor, an auxiliary system mounted to the tester bracket, connected to the crankshaft pulley through a belt and rotated by rotation of the crankshaft pulley and a controller controlling operations of the torque pulse simulation motor.Type: ApplicationFiled: September 14, 2015Publication date: September 15, 2016Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventors: Jong Won LEE, Key Chun PARK, Eui Chul CHOI, Yong Woo KIM, Jae Ik AHN
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Patent number: 9151365Abstract: The present invention relates to a timing chain system including a hydraulic pressure timing chain tensioner autonomously controlling a hydraulic pressure for maintaining tension of a timing chain to effectively operate. The system may include: a crankshaft sprocket; a camshaft sprocket controlling exhaust or intake timing of the engine; a timing chain operably connecting the crankshaft and camshaft sprockets; a chain guide for the timing chain; a chain tensioner pushing the chain guide inward; and an oil supply unit for the chain tensioner. The chain tensioner may include a housing, an operating unit case fixed to the housing, a reciprocating plunger inserted into the operating unit case, a high pressure chamber, a low pressure chamber, a supply hydraulic path supplying oil from the oil supply unit to the low pressure chamber, and a regulator controlling hydraulic pressure of the low pressure chamber.Type: GrantFiled: December 31, 2013Date of Patent: October 6, 2015Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, BORGWARNER INC.Inventors: Chung Han Oh, Dae Sung Kim, Kyoung Pyo Ha, Joong Soo Kim, Eui Chul Choi, Young-Taek Sun, Won-Jung Kwon
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Publication number: 20150024887Abstract: The present invention relates to a timing chain system including a hydraulic pressure timing chain tensioner autonomously controlling a hydraulic pressure for maintaining tension of a timing chain to effectively operate. The system may include: a crankshaft sprocket; a camshaft sprocket controlling exhaust or intake timing of the engine; a timing chain operably connecting the crankshaft and camshaft sprockets; a chain guide for the timing chain; a chain tensioner pushing the chain guide inward; and an oil supply unit for the chain tensioner. The chain tensioner may include a housing, an operating unit case fixed to the housing, a reciprocating plunger inserted into the operating unit case, a high pressure chamber, a low pressure chamber, a supply hydraulic path supplying oil from the oil supply unit to the low pressure chamber, and a regulator controlling hydraulic pressure of the low pressure chamber.Type: ApplicationFiled: December 31, 2013Publication date: January 22, 2015Applicants: Hyundai Motor Company, Borgwarner Inc., Kia Motors CorporationInventors: Chung Han Oh, Dae Sung Kim, Kyoung Pyo Ha, Joong Soo Kim, Eui Chul Choi, Young-Taek Sun, Won-Jung Kwon
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Patent number: 8528509Abstract: A variable valve lift apparatus may include a variable valve lift housing, a master piston which is slidably disposed in the variable valve lift housing and contacts a cam, a slave piston which is slidably disposed in the variable valve lift housing, defines an oil chamber with the master piston therebetween, and opens a valve connected to the slave piston according to reciprocative motion of the master piston, and a lift control portion which supplies oil to the oil chamber or exhausts oil in the oil chamber selectively to control a relative distance between the master piston and the slave piston.Type: GrantFiled: July 27, 2010Date of Patent: September 10, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Hosung Cho, Jin Gyu Yang, Myung Rae Cho, Hong Wook Lee, Seong Hyuk Kang, Taewon Park, Jinwoo Yang, Wootae Kim, Myungsik Choi, Eui Chul Choi, Sung Han Kang, Won Gyu Kim
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Patent number: 8468985Abstract: An electro-hydraulic variable valve lift apparatus may include a housing, a master portion which is slidably disposed to the housing and contacts a cam, a first oil supply portion which supplies hydraulic pressure, a slave piston which is slidably disposed within the housing and defines an oil chamber with the master portion, a latching portion which is supplied the hydraulic pressure from the first oil supply portion and selectively connects the slave piston and the master portion, a second oil supply portion which selectively supplies hydraulic pressure to the oil chamber so as to control relative distances between the master portion and the slave piston when the slave piston is disengaged with the master portion, and a stepped portion formed to the housing between the master portion and the slave piston to elastically support the master portion.Type: GrantFiled: July 30, 2010Date of Patent: June 25, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Hosung Cho, Jin Gyu Yang, Myung Rae Cho, Hong Wook Lee, Duk Jin Park, Seong Hyuk Kang, Taewon Park, Wootae Kim, Myungsik Choi, Jin Woo Yang, Eui Chul Choi, Sung Han Kang, Won Gyu Kim, Dae Sung Kim
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Patent number: 8408173Abstract: An electro-hydraulic variable valve lift apparatus may include a valve unit housing of which a guide protrude portion is formed therein, a main piston which is slidably disposed in the valve unit housing and defines a valve adjusting oil chamber with the valve unit housing, a main spring which is disposed within the valve adjusting oil chamber and elastically supports the main piston on the guide protrude portion, a dependent piston which is slidably disposed within the valve unit housing, is guided along the guide protrude portion, reciprocates according to reciprocation of the main piston, and opens a valve, and a main oil supply portion which selectively supplies hydraulic pressure to the valve adjusting oil chamber.Type: GrantFiled: September 9, 2010Date of Patent: April 2, 2013Assignee: Hyundai Motor CompanyInventors: Myung Rae Cho, Hong Wook Lee, Taewon Park, Woo Tae Kim, Myung Sik Choi, Eui Chul Choi, Won Gyu Kim
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Publication number: 20110132297Abstract: An electro-hydraulic variable valve lift apparatus may include a housing, a master portion which is slidably disposed to the housing and contacts a cam, a first oil supply portion which supplies hydraulic pressure, a slave piston which is slidably disposed within the housing and defines an oil chamber with the master portion, a latching portion which is supplied the hydraulic pressure from the first oil supply portion and selectively connects the slave piston and the master portion, a second oil supply portion which selectively supplies hydraulic pressure to the oil chamber so as to control relative distances between the master portion and the slave piston when the slave piston is disengaged with the master portion, and a stepped portion formed to the housing between the master portion and the slave piston to elastically support the master portion.Type: ApplicationFiled: July 30, 2010Publication date: June 9, 2011Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Hosung Cho, Jin Gyu Yang, Myung Rae Cho, Hong Wook Lee, Duk Jin Park, Seong Hyuk Kang, Taewon Park, Wootae Kim, Myungsik Choi, Jin Woo Yang, Eui Chul Choi, Sung Han Kang, Won Gyu Kim, Dae Sung Kim
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Publication number: 20110132299Abstract: A variable valve lift apparatus may include a variable valve lift housing, a master piston which is slidably disposed in the variable valve lift housing and contacts a cam, a slave piston which is slidably disposed in the variable valve lift housing, defines an oil chamber with the master piston therebetween, and opens a valve connected to the slave piston according to reciprocative motion of the master piston, and a lift control portion which supplies oil to the oil chamber or exhausts oil in the oil chamber selectively to control a relative distance between the master piston and the slave piston.Type: ApplicationFiled: July 27, 2010Publication date: June 9, 2011Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Hosung Cho, Jin Gyu Yang, Myung Rae Cho, Hong Wook Lee, Seong Hyuk Kang, Taewon Park, Jinwoo Yang, Wootae Kim, Myungsik Choi, Eui Chul Choi, Sung Han Kang, Won Gyu Kim
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Publication number: 20110132301Abstract: An electro-hydraulic variable valve lift apparatus may include a valve unit housing of which a guide protrude portion is formed therein, a main piston which is slidably disposed in the valve unit housing and defines a valve adjusting oil chamber with the valve unit housing, a main spring which is disposed within the valve adjusting oil chamber and elastically supports the main piston on the guide protrude portion, a dependent piston which is slidably disposed within the valve unit housing, is guided along the guide protrude portion, reciprocates according to reciprocation of the main piston, and opens a valve, and a main oil supply portion which selectively supplies hydraulic pressure to the valve adjusting oil chamber.Type: ApplicationFiled: September 9, 2010Publication date: June 9, 2011Applicant: Hyundai Motor CompanyInventors: Myung Rae Cho, Hong Wook Lee, Taewon Park, Woo Tae Kim, Myung Sik Choi, Eui Chul Choi, Won Gyu Kim