METHOD, SYSTEM AND APPARATUS FOR DETECTING INJECTOR CLOSING TIME

摘要

A method for detecting a closing time of an injector valve includes receiving a valve current profile of the injector valve, processing the valve current profile using at least a slope discriminator, determining a stuck status and a closing time (if applicable) of the injector valve based on an output of the slope discriminator. An engine control unit configured to detect a closing time of an injector valve is also provided. The engine control unit has a first control logic configured to receive a valve current profile of the injector valve, a second control logic configured to process the current profile using at least a slope discriminator, and a third control logic configured to determine a stuck status and a closing time of the injector valve based on an output of the slope discriminator. Further, a vehicle system including a controller configured to detecting a valve closing time is provided.

主权项

1. A method for detecting a closing time of an injector valve, the method comprising:
receiving a valve current profile of the injector valve; processing the valve current profile using at least a slope discriminator; and determining a stuck status of the injector valve based on an output of the slope discriminator; and if the injector valve is not stuck, determining the closing time of the injector valve based on the output of the slope discriminator.