Hi guys,(adsbygoogle = window.adsbygoogle || []).push({});

I have been trying to model mechanical eff. of an ICE. I have two methods for that one using:

[tex]\eta[/tex]_{m}= [tex]\frac{bp}{bp+fp}[/tex]

where bp = brake power

fp = friction power

This method did not work well because of bad assumptions in fp. So I decided to calculate the bp_required from back calculating the power from the tires. And using that to calculate the %load on the engine however the load values are too high so there should be a problem with bp_required. I calculate bp_required through coast-down test. What can be the reason of high bp_required? Do you have any idea or suggestion to check?

Thanks,

- Red

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# Calculating mechanical eff. @ ICE

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