Invention Grant
- Patent Title: Exhaust gas cleaning catalyst, exhaust gas cleaning device, and system comprising internal combustion engine
- Patent Title (中): 废气净化催化剂，废气净化装置以及包含内燃机的系统
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Application No.: US13137103Application Date: 2011-07-20
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Publication No.: US08418447B2Publication Date: 2013-04-16
- Inventor: Hirohito Hirata
- Applicant: Hirohito Hirata
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff & Berridge, PLC
- Priority: JP2004-262066 20040909
- Main IPC: F01N3/10
- IPC: F01N3/10 ; B01D50/00 ; B01D53/34 ; B01J27/02 ; B01J27/053 ; B01J27/055
Abstract:
The invention makes use of an exhaust gas catalyst, comprising an active component comprising at least one type of metal from noble metals and transition metals; NOx-absorbing material for absorbing and releasing nitrogen oxides according to the surrounding nitrogen oxide concentration; and compounds represented by A2O2SO4 and/or A2O2S (A is a rare earth element).
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