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METHOD FOR DETERMINATION OF MEAN ENGINE TORQUE

  • US 20090132182A1
  • Filed: 11/17/2004
  • Published: 05/21/2009
  • Est. Priority Date: 11/17/2004
  • Status: Active Grant
First Claim
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1. A method for producing a value T being representative of mean engine torque generated on a crankshaft of an internal combustion engine, comprising the steps ofproducing a speed vector including values being representative of instantaneous speeds of the engine during a sampling period,determining a mean engine speed n during the sampling period from the speed vectordetermining a value Px being representative of the frequency contribution of the speed vector at the frequency x*n, where x is a pre-selected order, andproducing a value T being representative of the mean engine torque on the crankshaft during the sampling period wherein T is derived from a mathematical expression including a polynomial having at least a term k*n*Px, wherein k is a polynomial constant.

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