FUEL INJECTION MEASUREMENT AND DIAGNOSTICS
    8.
    发明申请
    FUEL INJECTION MEASUREMENT AND DIAGNOSTICS 有权
    燃油喷射测量和诊断

    公开(公告)号:US20090254262A1

    公开(公告)日:2009-10-08

    申请号:US12190804

    申请日:2008-08-13

    IPC分类号: F02D41/30

    摘要: A system and method comprises operating an engine during a first cycle to drive a piston in a cylinder without energizing a fuel injector of the cylinder; acquiring first pressure data of the cylinder for a predetermined crank angle window during the first cycle; energizing the fuel injector for an energizing time during a second cycle; acquiring second pressure data of the cylinder for the predetermined crank angle window during the second cycle; calculating a pressure ratio difference average (PRDA) from the first pressure data and the second pressure data; and modifying the operation of the fuel injector based on the PRDA value.

    摘要翻译: 一种系统和方法包括在第一循环期间操作发动机以在气缸中驱动活塞而不使气缸的燃料喷射器通电; 在第一周期期间获取用于预定曲柄角窗口的气缸的第一压力数据; 在第二循环期间给燃料喷射器通电一个通电时间; 在所述第二循环期间获取用于所述预定曲柄角窗口的所述气缸的第二压力数据; 从所述第一压力数据和所述第二压力数据计算压力差平均值(PRDA); 以及基于PRDA值修改燃料喷射器的操作。