Method for determining the actual offset value of an injector of an internal combustion engine
    3.
    发明公开
    Method for determining the actual offset value of an injector of an internal combustion engine 有权
    用于确定内燃发动机的喷射器的实际偏移量的方法

    公开(公告)号:EP2108804A1

    公开(公告)日:2009-10-14

    申请号:EP08425229.5

    申请日:2008-04-08

    IPC分类号: F02D41/40 F02D41/24

    摘要: A method for determining the actual offset value of an injector (5) of an internal combustion engine (1); the method includes the steps of: determining, at a stationary rate, a target injection time (T inj ) for the injector (5); driving the injector (5) to perform a single injection having a duration equal to the target injection time (T inj ); subsequently driving the injector (5) to perform n subsequent sub-injections, each having a duration equal to one n-th of the target injection (T inj ); measuring the exhaust gas titre (λ 1 ) by performing the single injection; measuring the exhaust gas titre (λ 2 ) by performing the n sub-injections; and determining the actual offset value (T offset ) of the injector (5) according to the variation of the exhaust gas titre by performing the single injection and by performing the n sub-injections.

    摘要翻译: 一种用于确定性采矿方法的内燃发动机(1)的喷射器(5)的实际偏移量; 该方法包括以下步骤:用于注射器(5)确定的挖掘,在固定速率,目标喷射时间(T INJ); 驱动喷射器(5)执行具有等于目标喷射时间(T INJ)的持续时间的单次注射; 随后驱动喷射器(5)执行n次后续子喷射,每个具有等于目标喷射(为T inj)的n分之一的持续时间; 测量废气滴定率(»1)通过执行单次喷射; 测量废气滴定率(“2)通过执行第n子喷射; 和确定性采矿实际偏移量通过执行单次喷射和通过执行n次子喷射(T偏移)喷射器(5)的雅丁到废气滴定率的变化情况。