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# Calculating Exact Power From Data

IP.com Disclosure Number: IPCOM000099178D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 50K

IBM

## Related People

Brigida, DJ: AUTHOR [+2]

## Abstract

This article describes an engine analysis which utilizes the slope of a signal from a converter attached to the engine's to reveal the power being produced by the engine's From this slope absolute engine power can be

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Calculating Exact Power From Data

the slope of a signal from a converter attached to the engine's to
reveal the power being produced by the engine's  From this slope
absolute engine power can be

It has been known for some time that the change in velocity of
an unloaded automobile engine denotes amount of power the engine is
producing.  The literature how to make such power calculations based
on the between adjacent flywheel  Although this produces good results
it is deficient it requires considerable computing power memory and
prone to noise.  In the technique disclosed herein, power can be
designed that require very little memory computing power.

As engine cylinders fire, they accelerate the engine's
Referring to Fig. 1, this acceleration can be by a sensor that issues
one pulse each time a tooth passes.  When the sensor output is passed
a frequency-to-voltage converter, the resulting is shown in Fig. 2,
which is a graph for a four- engine. It illustrates the velocity
changes by the flywheel.  The shape of this output reveals the torque
contribution provided by each cylinder.  Fig. 2 illustrates this as
four slopes of waveform, one for each cylinder.  The particular
torque by one cylinder is encoded in its respective slope.  Greater
torque is shown by waveform slopes are high and that transcend from a
low valley to a peak  For example, shown in dotted lines is a
waveform of...