View Single Post
Old 03-05-2013, 04:33 PM   #57 (permalink)
renault_megane_dci
Master EcoModder
 
Join Date: Feb 2009
Location: France - Paris
Posts: 762

la_voiture_de_courses - '03 Renault Megane Estate
OldContinents
90 day: 44.34 mpg (US)

xiao lan - '01 Audi A2
90 day: 38.88 mpg (US)

Brit iron - '92 Mini Mini
90 day: 45.5 mpg (US)

Prius - '09 Toyota PRIUS Lounge
90 day: 47.37 mpg (US)

Beemer - '06 BMW F800 ST
90 day: 53.06 mpg (US)
Thanks: 188
Thanked 33 Times in 30 Posts
Quote:
Originally Posted by beatr911 View Post
Could you please show your math?
I will show it tomorrow, it is on my work computer (based on valve closing event wich I can"t remember right now)

Quote:
Originally Posted by beatr911 View Post
I would like to understand how you arrived at 38% of the original power output where the Prius is alot more.
Prius is advertised with its Otto cycle power as I stated before.

Quote:
Originally Posted by beatr911 View Post
I can be a little slow, if a picture shows the cross you mention well please show it if possible.
The calculation is crude :
GPZ power per liter for the useful stroke on compression gives 180hp or so per liter
Later inlet closure gives a reduced capacity wich multiplied by the specific power gives 22hp.
It is relevant with cars output althought older school engine.


Quote:
Originally Posted by beatr911 View Post
We are working along the same path of only adjusting a fixed gear intake cam, and on a similar engine (mine just has two more cylinders).
Is yours water cooled ?


Quote:
Originally Posted by beatr911 View Post
Do you have access to engine building software that can predict engine output based on varying cam timing and/or compression?
Unfortunately not.



Quote:
Originally Posted by beatr911 View Post
That is what we really need here before we start cutting, grinding and moving gears.
I still have to bite the bullet and buy a bike (then an ER-5 exhaust cam) and then dare to attend ruining this fine piece of engineery with technical ingenuity ...
  Reply With Quote