Continental Automotive Systems Corporation

Motorola Corporation

Vitesco Technologies Usa, LLC

Donald Peter Kultgen

Ningsheng Qiao

Pascal Barbier

Marvin L Lynch

Jeffrey D Naber

Richard John Gilbert

Louis Yizhang Liu

Ninsheng Qiao

Hanlong Yang

Marvin Lester Lynch

A control unit, controller and non-transitory machine-readable medium for detecting a closing time of an injector valve are disclosed. The control unit is configured to receive a valve current profile of the injector valve, process the valve current profile using at least a slope discriminator, and determine a stuck status and a closing time (if applicable) of the injector valve based on an output of the slope discriminator.

Method, system and apparatus for detecting injector closing time

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.

A method for detecting an opening time of a valve, includes receiving a valve current profile of the valve and processing the valve current profile using at least a slope reflection detector to determine a status of the valve based on an output of the slope reflection detector.

Method and apparatus for detecting selective catalytic reduction injector opening time

A method and system for a misfire detection acquires () a series of acceleration data () representative of acceleration behavior of an engine. The data is sampled () to obtain acceleration data samples at a rate sufficient to obtain up to fourth-order perturbations of the data. The samples are filtered () to provide bandwidth limited samples, which are provided to at least two channels (). The samples are pattern matched () in a first channel to enhance harmonic phenomena and pattern canceled () in a second channel to enhance random phenomena. Hard and random misfires are detected () dependent on a magnitude of the filtered acceleration data samples. Preferably, a third channel () is added to detect multiple misfires.

Misfire detection in an internal combustion engine

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Garden City, MI, United States of America

Donald Peter Kultgen