FUEL SYSTEM DIAGNOSTIC SYSTEMS AND METHODS
    31.
    发明申请
    FUEL SYSTEM DIAGNOSTIC SYSTEMS AND METHODS 有权
    燃油系统诊断系统及方法

    公开(公告)号:US20100294030A1

    公开(公告)日:2010-11-25

    申请号:US12469949

    申请日:2009-05-21

    IPC分类号: G01M15/04

    摘要: A diagnostic system comprises a monitoring module and a diagnostic module. The monitoring module receives a first rail pressure measured by a high side rail pressure sensor during engine cranking at a location where fuel is pressurized by a high pressure fuel pump. The diagnostic module selectively diagnoses a fault in at least one of the high pressure fuel pump and the high side rail pressure sensor when the first rail pressure is less than a predetermined pressure and rail pressures received during a predetermined period after the first rail pressure is received are less than the predetermined pressure.

    摘要翻译: 诊断系统包括监视模块和诊断模块。 在燃料由高压燃料泵加压的位置处,在发动机起动期间,监测模块接收由高侧轨道压力传感器测量的第一轨道压力。 当第一轨道压力小于在接收到第一轨道压力之后的预定时段期间接收到的预定压力和轨道压力时,诊断模块选择性地诊断高压燃料泵和高侧轨道压力传感器中的至少一个中的故障 小于预定压力。