公开(公告)号：US20150275807A1

公开(公告)日：2015-10-01

申请号：US14231807

申请日：2014-04-01

Applicant: GM Global Technology Operations LLC

Inventor： MICHAEL J. LUCIDO ,  JONATHAN T. SHIBATA

IPC: F02D41/30

CPC classification number: F02D41/3005 ,  F02D41/20 ,  F02D41/221 ,  F02D41/402 ,  F02D2041/2055 ,  F02D2041/224 ,  F02D2041/228 ,  F02D2200/0602 ,  F02D2200/0614 ,  F02D2200/0616

Abstract: An injector driver module applies power to a fuel injector of an engine for a fuel injection event. A voltage measuring module measures first and second voltages at first and second electrical connectors of the fuel injector. A parameter determination module determines a maximum value based on a first difference between the first and second voltages, determines a minimum value based on the first difference between the first and second voltages, and determines a second difference between the maximum and minimum values. A diagnostic module, based on the second difference between the maximum and minimum values, indicates whether the fuel injector injected fuel in response to the application of power.

Abstract translation: 喷射器驱动器模块向用于燃料喷射事件的发动机的燃料喷射器施加动力。 电压测量模块测量燃料喷射器的第一和第二电连接器处的第一和第二电压。 参数确定模块基于第一和第二电压之间的第一差确定最大值，基于第一和第二电压之间的第一差值确定最小值，并确定最大值和最小值之间的第二差。 基于最大值和最小值之间的第二差异的诊断模块指示燃料喷射器是否响应于施加电力而喷射燃料。