发明名称 |
EXHAUST GAS PURIFICATION SYSTEM |
摘要 |
Provided is an exhaust gas purification system that can prevent adhesion of urea water in a dosing valve during DPF regeneration. An exhaust gas purification system 100 includes a DCU 126 that controls a supply module 106 to inject or return urea water inside a dosing valve 104 to a urea tank 105 in order to remove urea water accumulated in the dosing valve 104 when receiving a DPF regeneration authorization request from an ECM 125, and then transmits a DPF regeneration authorization to the ECM 125 when determining that an NH3 amount of an SCR catalyst is less than or equal to a prescribed value. |
申请公布号 |
US2013058833(A1) |
申请公布日期 |
2013.03.07 |
申请号 |
US201113697912 |
申请日期 |
2011.05.16 |
申请人 |
ONODERA TAKAO;HOTTA MAMI;MINEZAWA MASANOBU |
发明人 |
ONODERA TAKAO;HOTTA MAMI;MINEZAWA MASANOBU |
分类号 |
F01N3/18;G05D7/00 |
主分类号 |
F01N3/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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