View Single Post
Old 5 May 2015, 22:13 (Ref:3534526)   #2558
hcl123
Veteran
 
Join Date: Mar 2008
Posts: 889
hcl123 is heading for a stewards' enquiry!
Quote:
Originally Posted by tomazy View Post
I think there is no way that the difirance would be that big. If we say that porshe has 600ps, than Toyota would have 500, that would mean that Toyotas engine is 17% less efficient.

I am just glad that Porsche came in to the LMP1 with the petrol engine. Imagine if they didn't, all would be screaming that the rules masively favour diesel cars.
Relative... only if they only manage the same distance (nÂș of laps) then its that less efficient... otherwise is only less powerful ->and that it really is, to be more powerful that NA needs to augment RPM, above 15K rpm could be achievable in that arch as example(now goes 9K rpm), but with 8 cylinders firing can only imagine then efficiency go to trash, and fuel penalties flooding...

So a NA, as any other engine can be quite efficient, on its best operating band -> which could not compare favorably to other engine archs ( a turbo as example) in terms of torque/power, on their best operating bands...

NA more efficient but less powerful, need to push for more power then can became quite less efficient (a catch22)... of course the 'marketing' only focus on the more rosy numbers...
hcl123 is offline  
Quote