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Engine torque calculation

  • US 6,584,391 B2
  • Filed: 07/23/2001
  • Issued: 06/24/2003
  • Est. Priority Date: 07/23/2001
  • Status: Expired due to Term
First Claim
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1. A torque calculation method for providing real time data that measures net torque output of a running engine at a rotating member of the engine, the method comprising:

  • processing data that includes engine speed data and engine fueling data to create engine gross torque data for the running engine;

    processing data related to torque losses due to running of the engine to create engine running torque loss data;

    processing engine speed data to create engine acceleration and deceleration data;

    processing the engine acceleration and deceleration data with data defining a moment of inertia attributable to the rotating member and engine mechanism coupled to that member to create data measuring inertial torque;

    algebraically adding the inertial torque data to, and subtracting the engine running torque loss data from, the engine gross torque data to create engine net running torque data; and

    processing the engine net running torque data and engine speed data according to a filter algorithm that compensates the engine net running torque data for engine speed.

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