Now..……….
Watts = Newton meters x Radians per second
And
from our torque chart,
…………..…..Nm
= a x Rads/sec + b
If we substitute the Newton
meters from the second equation into the first.
We get an
equation to give watts just from the speed of the engine, Radians
per second
…………..…..
Watts = Rs (a x Rs + b)
or
…………..…...Watts
= a x Rs^{2} + b x Rs
We
know the engine speed when it is at the power
peak
so,
……………....Peak
power = a * Peak Rs^{2 }+ b * Peak
Rs
…………...………...……….=
– 0.051 x
59.58
^{2
}+ 6.078
x 59.58
……………………………...=
– 181.04
+
362.13
………………………….…..=
181.1
Watts
181
Watts at 569 RPM
fits
well with our power curve charted data.
And
there was no need for seven sets of readings – just
three.
