# How do I extrapolate to approximate the power of a car engine at a specific rpm? [closed]

Assuming a vehicle's maximum power is 190Hp @ 4400 rpm (4.3L, V6), how can i extrapolate and approximate the power output at a certain rpm, say 2000?

I am a Computer Sc guy and need to write a program that needs me to be able to calculate this. Since my CS background did not really equip me with this knowledge, could someone point me to the right books, online articles where I can read up about this?

Thanks.

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Read about "extrapolation" and "interpolation, then ask again. – Georg Jul 26 '11 at 20:58
geez, fine. Since the value I want is within the bounds of the min and max value, it should be interpolation. Can I now have an answer? – xbonez Jul 26 '11 at 21:00
You present only one value in Your question. – Georg Jul 26 '11 at 21:02
This is the information given to me: "Power can be extrapolated using a realistic power curve given that the vehicle's maximum power is 190Hp @ 4400 rpm. The engine is a 4.3L displacement V6." – xbonez Jul 26 '11 at 21:11
@xbonez: although Georg could have said it better, he's right that this is not really a physics question, but rather an automotive engineering question. It depends on specific properties of engines that fall outside the domain of basic physics. Unfortunately I don't believe there is an automotive Q&A site in the Stack Exchange network, but I imagine a web search should turn up some places to ask. – David Zaslavsky Jul 26 '11 at 21:47
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## closed as off topic by David Zaslavsky♦Jul 26 '11 at 21:48

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