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公开(公告)号：US10208640B2
公开(公告)日：2019-02-19
申请号：US15610518
申请日：2017-05-31
发明人： Jin Woo Choung , SooMin Lee , SungJae Kim
摘要： A method for controlling an exhaust gas purification apparatus according to an exemplary embodiment of the present invention is to improve performance of a three-way catalyst (TWC) purifying exhaust gas exhausted from an engine and includes determining heat load of the three-way catalyst by use of a temperature sensor and an exhaust gas flow rate sensor; measuring oxygen storage capacity (OSC) stored in the three-way catalyst according to the heat load; determining an inflection point by use of change amount of the OSC; and controlling catalyst heating period differently around the inflection point.
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公开(公告)号：US20180156091A1
公开(公告)日：2018-06-07
申请号：US15610518
申请日：2017-05-31
发明人： Jin Woo CHOUNG , SooMin Lee , SungJae Kim
CPC分类号： F01N3/2006 , F01N3/101 , F01N9/00 , F01N11/002 , F01N2560/06 , F01N2900/1602 , F01N2900/1624 , F01N2900/1631 , Y02A50/2324 , Y02T10/22 , Y02T10/47
摘要： A method for controlling an exhaust gas purification apparatus according to an exemplary embodiment of the present invention is to improve performance of a three-way catalyst (TWC) purifying exhaust gas exhausted from an engine and includes determining heat load of the three-way catalyst by use of a temperature sensor and an exhaust gas flow rate sensor; measuring oxygen storage capacity (OSC) stored in the three-way catalyst according to the heat load; determining an inflection point by use of change amount of the OSC; and controlling catalyst heating period differently around the inflection point.
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公开(公告)号：US10760461B2
公开(公告)日：2020-09-01
申请号：US16566619
申请日：2019-09-10
发明人： Jin Woo Choung , Chang Hwan Kim , SungJae Kim , SooMin Lee
摘要： A catalyst oxygen purge control method may include a catalyst oxygen purge control method during a cold engine period of a catalyst oxygen purge control apparatus which includes a three way catalytic converter through which an exhaust gas combusted when air and fuel are mixed in a combustion chamber is exhausted and the exhaust gas passes, wherein the method includes determining whether a fuel cut condition of an injector which injects the fuel to the combustion chamber is satisfied, performing fuel cut of the injector when the fuel cut condition is satisfied, measuring an oxygen storage capacity of the three way catalyst, and adjusting an oxygen purge time based on the measured oxygen storage capacity.
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公开(公告)号：US10208688B2
公开(公告)日：2019-02-19
申请号：US15610470
申请日：2017-05-31
发明人： Jin Woo Choung , SooMin Lee , SungJae Kim
摘要： A method for controlling an exhaust gas purification apparatus as a catalyst oxygen purge control method during a cold engine period of an exhaust gas purification apparatus including a three way catalyst (TWC) converter purifying exhaust gas exhausted from the engine includes determining whether a fuel cut condition of an injector which injects the fuel to the combustion chamber is satisfied; performing a fuel cut of the injector when the fuel cut condition is satisfied; determining heat load of the three way catalyst by use of a temperature detector and an exhaust gas flow rate detector; measuring oxygen storage capacity (OSC) stored in the three way catalyst according to the heat load; determining an inflection point by use of variation amount of the OSC; and controlling oxygen purge period differently around the inflection point.
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公开(公告)号：US10443464B2
公开(公告)日：2019-10-15
申请号：US15371021
申请日：2016-12-06
发明人： Jin Woo Choung , Chang Hwan Kim , SungJae Kim , SooMin Lee
摘要： A catalyst oxygen purge control method may include a catalyst oxygen purge control method during a cold engine period of a catalyst oxygen purge control apparatus which includes a three way catalytic converter through which an exhaust gas combusted when air and fuel are mixed in a combustion chamber is exhausted and the exhaust gas passes, wherein the method includes determining whether a fuel cut condition of an injector which injects the fuel to the combustion chamber is satisfied, performing fuel cut of the injector when the fuel cut condition is satisfied, measuring an oxygen storage capacity of the three way catalyst, and adjusting an oxygen purge time based on the measured oxygen storage capacity.
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