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11. 发明授权

US06195985B1 Method for reducing the pollutant emission of an internal combustion engine 失效
标题翻译：减少内燃机污染物排放的方法
公开(公告)号：US06195985B1
公开(公告)日：2001-03-06
申请号：US09174547
申请日：1998-10-19
申请人： Luigi del Re , Robert Apter , Daniel Handschin
发明人： Luigi del Re , Robert Apter , Daniel Handschin
IPC分类号： F01N300
CPC分类号： B60W20/15 , B60K6/46 , B60W10/06 , B60W10/08 , B60W20/00 , F01N3/20 , F01N3/22 , F01N2430/02 , F02D41/042 , Y02A50/2322 , Y02T10/54 , Y02T10/6217 , Y02T10/6286 , Y10S123/11
摘要： The method according to the invention is based on the discovery that the pollutant emissions in the first minutes of operation of an internal combustion engine also depend on the preceding operation and switching off procedure. It is suggested to subject the internal combustion engine and the catalytic converter to a cleaning or a scavenging phase before the standstill of the motor. With this cleaning or scavenging phase the movement of the internal combustion engine is still maintained for a certain time before standstill of the motor either by sparking or by an external drive and at least temporally in at least individual cylinders of the internal combustion engine the supply of fuel is interrupted and exclusively air is delivered. By way of this it is achieved that the remaining pollutants accumulated in the internal combustion engine are supplied to the catalytic converter which is still at the operating temperature and the catalytic converter is enriched with oxygen. For example one may let the internal combustion engine run out, by which means its rotational speed (n) from the beginning of the scavenging procedure (t1) to the standstill of the motor (t2) continuously decreases.
摘要翻译：根据本发明的方法是基于这样的发现，即在内燃机的运行的第一分钟内的污染物排放也取决于先前的操作和关闭程序。建议在电机停止之前对内燃机和催化转化器进行清洁或清扫阶段。通过这种清洁或清扫阶段，内燃机的运动在电机静止之前仍然保持一段时间，通过火花或通过外部驱动器，并且至少在时间上至少在内燃机的各个气缸内供应燃料中断，专门送风。通过这样做，实现了内燃机中累积的剩余污染物被供应到仍处于工作温度的催化转化器，并且催化转化器富含氧气。例如可能使内燃机用尽，这意味着从扫气程序（t1）开始到电动机（t2）停止的转速（n）连续减小。

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