Invention Application
US20170074191A1 METHOD FOR REGENERATING LEAN NOx TRAP OF EXHAUST PURIFICATION SYSTEM PROVIDED WITH LEAN NOx TRAP AND SELECTIVE CATALYTIC REDUCTION CATALYST AND EXHAUST PURIFICATION SYSTEM
有权
用于再生稀土氧化物捕获系统和选择性催化还原催化剂和排气净化系统提供的排气净化系统的优化方法
- Patent Title: METHOD FOR REGENERATING LEAN NOx TRAP OF EXHAUST PURIFICATION SYSTEM PROVIDED WITH LEAN NOx TRAP AND SELECTIVE CATALYTIC REDUCTION CATALYST AND EXHAUST PURIFICATION SYSTEM
- Patent Title (中): 用于再生稀土氧化物捕获系统和选择性催化还原催化剂和排气净化系统提供的排气净化系统的优化方法
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Application No.: US14954866Application Date: 2015-11-30
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Publication No.: US20170074191A1Publication Date: 2017-03-16
- Inventor: Young Jic KIM , Jungwhun KANG , Won Jin JO
- Applicant: HYUNDAI MOTOR COMPANY
- Priority: KR10-2015-0130419 20150915
- Main IPC: F02D41/02
- IPC: F02D41/02 ; F01N3/08 ; F01N3/20
Abstract:
A method for regenerating a lean NOx trap (LNT) of an exhaust purification system having the LNT and a selective catalytic reduction (SCR) catalyst includes determining whether a regeneration release condition of the LNT is satisfied; determining whether a regeneration demand condition of the LNT is satisfied; and performing regeneration of the LNT if the regeneration release condition of the LNT and the regeneration demand condition of the LNT are satisfied, wherein satisfaction of the regeneration release condition of the LNT is determined based on an NOx amount absorbed in the LNT, an NH3 amount stored in the SCR catalyst and temperature at an upstream of the SCR catalyst.
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