Class 324/398 - With air gap in ground circuit

Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter having the air gap connected in parallel
No. of patents: 4
Last issue date: 07/31/2007

Number	Title	Issue Date
7251571	Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal In a first embodiment, the present invention is a method of detecting an open secondary winding, including the steps of enabling an integrator, resetting the integrator, detecting an ionization current, integrating the ionization current over a spark window, compari...	07/31/2007
7209850	Active tester for vehicle circuit evaluation An active tester for vehicle circuit evaluation includes a signal source for generating a dynamic signal, such as an AC current, for injecting to a circuit under test. The tester includes a data storage device for storing at least one test parameter and a data proce...	04/24/2007
6559647	Diagnosing spark plugs malfunction in a dual plug engine The present invention related generally to a method for determining spark plug malfunction and more particularly to a method for determining spark plug malfunction in an internal combustion engine in which at least two spark plugs are disposed in each cyl...	05/06/2003
6211680	Process and apparatus for recognizing ignition failures in an internal-combustion engine having two spark plugs per cylinder A process for recognizing ignition failures in an internal-combustion engine which has two spark plugs per cylinder, based on a measurement of the ionic current at the spark plugs. In this process, the ionic current signals of the two spark plugs are each...	04/03/2001

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