US Patent Application 20090309455 - METHOD FOR DETERMINING A FUNCTIONAL STATE OF A PIEZOELECTRIC INJECTOR OF AN INTERNAL COMBUSTION ENGINE
InventorsAssigneeUS Classes310/317, Input circuit for mechanical output from piezoelectric element324/537, Of individual circuit component or element702/115Electromechanical or magnetic systemAttorney, Agent or FirmForeign Documents
International ClassesH02N 2/06G01R 31/02 G06F 19/00 Issued Patent Number:8061188Abstract textA check is made to determine whether the capacitance value measured at a specific point in time corresponds to a capacitance value of a calculated further capacitance profile or the measured capacitance value is within two tolerance ranges. |
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