公开(公告)号：US06729301B2

公开(公告)日：2004-05-04

申请号：US10457379

申请日：2003-06-10

申请人： kenichi Nakamori ,  Jun Aoki ,  Katsunori Ueda

发明人： kenichi Nakamori ,  Jun Aoki ,  Katsunori Ueda

IPC分类号： F02P500

CPC分类号： F02P5/1516 ,  F02D41/0072 ,  F02P5/106 ,  Y02T10/46 ,  Y02T10/47

摘要： An ignition timing control system for an internal combustion engine includes an electronic control unit. In a transition state where an in-cylinder EGR rate varies, the unit calculates an ignition timing corresponding to the in-cylinder EGR rate by means of linear interpolation based on ignition timings for EGR and non-EGR operations determined from maps, sets a retard amount based on the ratio of the in-cylinder EGR rate to a target EGR rate, and performs ignition timing control based on a corrected ignition timing obtained by subtracting the retard amount from the calculated ignition timing, thus preventing occurrences of knocking due to excessively advanced ignition timing, and deteriorated fuel consumption and drivability.

摘要翻译： 用于内燃机的点火正时控制系统包括电子控制单元。 在缸内EGR率变化的过渡状态下，该单元通过基于由地图确定的EGR和非EGR运行的点火正时的线性插值来计算与缸内EGR率相对应的点火正时，设定延迟 基于缸内EGR率与目标EGR率的比例，基于从计算出的点火正时减去延迟量而获得的校正点火正时进行点火正时控制，从而防止由于过度前进而发生的爆震 点火正时，燃油消耗和驾驶性能变差。