发明名称 |
Method for operating an internal combustion engine |
摘要 |
A method is described for operating an internal combustion engine, in particular of a motor vehicle. In the method, a lean air/fuel mixture is burned in a combustion chamber; nitrogen oxides contained in the exhaust gas are stored in an accumulator-type catalytic converter; a storage efficiency, with which the accumulator-type catalytic converter stores the nitrogen oxides contained in the exhaust gas, is ascertained; and the storage efficiency is ascertained as a function of an instantaneous space velocity of the exhaust gases in the accumulator-type catalytic converter. Two efficiencies are ascertained at least as a function of the temperature of the accumulator-type catalytic converter and a space velocity. One of the two efficiencies is ascertained for a great space velocity, and the other efficiency is ascertained for a small space velocity. The storage efficiency is ascertained as a function of the instantaneous space velocity from the two efficiencies. |
申请公布号 |
US2007163231(A1) |
申请公布日期 |
2007.07.19 |
申请号 |
US20040555127 |
申请日期 |
2004.04.06 |
申请人 |
PFAEFFLE ANDREAS;KLENK WOLFGANG;SCHERER STEFAN;NEUBERTH SIMONE;SCHWADERER ALBRECHT |
发明人 |
PFAEFFLE ANDREAS;KLENK WOLFGANG;SCHERER STEFAN;NEUBERTH SIMONE;SCHWADERER ALBRECHT |
分类号 |
F01N3/00;F01N3/08;F01N3/10;F01N7/00;F01N7/02;F01N11/00;F02D41/02 |
主分类号 |
F01N3/00 |
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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