Electrical testing system and method

  • US 10,371,599 B2
  • Filed: 10/30/2015
  • Issued: 08/06/2019
  • Est. Priority Date: 10/31/2014
  • Status: Active Grant
First Claim
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1. A method for measuring and determining cranking RPM of a vehicle, the method comprising the steps of:

  • measuring current and/or voltage of a portion of an electrical system of the vehicle at a load module during at least a portion of a starting cycle, the load module configured to apply loads to the vehicle'"'"'s electrical system; and

    in one or more computing devices,determining a first extreme current and/or voltage point of the portion of the electrical system after the starting cycle has begun to designate a first reference time,determining a second current and/or extreme voltage point of the portion of the electrical system after the first reference time to create a second reference time,determining an amount of time between the first and second reference times,determining a number of compression strokes per minute based on the amount of time between the first and second reference times, anddetermining the cranking RPM of the vehicle based on the number of compression strokes per minute and number of cylinders in the vehicle,wherein the determining steps are performed in a control module located remotely from the load module.

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