Invention Grant
US08176729B2 Perturbation control strategy for low-temperature urea SCR NOx reduction
有权
低温尿素SCR氮氧化物还原扰动控制策略
- Patent Title: Perturbation control strategy for low-temperature urea SCR NOx reduction
- Patent Title (中): 低温尿素SCR氮氧化物还原扰动控制策略
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Application No.: US12043241Application Date: 2008-03-06
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Publication No.: US08176729B2Publication Date: 2012-05-15
- Inventor: Shouxian Ren
- Applicant: Shouxian Ren
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F01N3/00
- IPC: F01N3/00
Abstract:
An emissions control method may include injecting a fuel into an engine exhaust gas provided to a diesel oxidation catalyst (DOC) when a DOC operating temperature is greater than a first limit, terminating the injecting when a temperature of a catalyst in communication with exhaust gas exiting the DOC is greater than a second limit, and injecting a dosing agent into the exhaust gas after the terminating.
Public/Granted literature
- US20090223207A1 PERTUBATION CONTROL STRATEGY FOR LOW-TEMPERATURE UREA SCR NOX REDUCTION Public/Granted day:2009-09-10
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