EGR control apparatus and method for operating the

专利名称：EGR control apparatus and method for

operating the same

发明人：Wang, Xiumei c/o DENSO CORPORATION申请号：EP06114857.3申请日：20060601公开号：EP1729004B1公开日：20100303

摘要：An ECU (5) calculates a foreign-matter accumulation index base on a total flowrate of EGR gas integrated since the previous execution of a last foreign-matter removaloperation until the present execution of the foreign-matter removal operation. The ECU(5) controls an actuator (10) for operating an EGR valve (9) and a number of theactuations of the EGR valve (9) on the basis of the foreign-matter accumulation index.When the total flow rate of the EGR gas increases, the quantity of foreign matterscontained in EGR gas correspondingly increases. Therefore, as the foreign-matteraccumulation index becomes larger, the actuation intensity of the EGR valve (9) is sethigher, and the number of the actuations of the EGR valve (9) is set larger. As a result, theremoval operation of foreign matters can be efficiently executed in accordance with thedeposition intensity or the deposition quantity of foreign matters.

申请人：DENSO CORP

地址：JP

国籍：JP

代理机构：TBK-Patent

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