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Thank you both for you replies.
So the way to get different values of bmep at the same speed is by modifying the load?
I must confess I am having a tough time understanding the graph. Let me put the question in another way.
In this graph
hxxp://imageshack.us/photo/my-images/846/powervsspeed.png/
One way to make it operate in the optimal operating region and not along the maximum power line is by adding load? If so, what other factors can be used to make the engine operate at minimum bsfc?
Also I have one more question. My understanding of wide open throttle (WOT) is that maximum air is sucked in. At WOT in a gasoline engine the fuel intake rate must also be maximum. Shouldn't the engine run at it full speed if at WOT then?
If this is true, why are a whole range of speeds specified along with corresponding values for mep and power at WOT in this graph?
hxxp://imageshack.us/photo/my-images/641/woti.png/
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