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Rohit_Kumar
12-11-2012, 03:17 AM
can anyone help me with specs of 2004hondacbr600rr engine?
i need datas like:
wrist pin offset, connecting rod length, FMEP(or acf, bcf, ccf), clearance height, rough range of air fuel ratio, nozzle dia, fuel spread angle, piston top temp, cyliner liner temp, cylinder head temp, intake valve temp, exhaust valve temp, combustion duration, location of 50% burn point with reference to different RPMs for ricardo wave modelling.

please reply if anyone has these datas.

jlangholzj
12-11-2012, 05:26 AM
Originally posted by display_rohit:
can anyone help me with specs of 2004hondacbr600rr engine?
i need datas like:
wrist pin offset, connecting rod length, FMEP(or acf, bcf, ccf), clearance height, rough range of air fuel ratio, nozzle dia, fuel spread angle, piston top temp, cyliner liner temp, cylinder head temp, intake valve temp, exhaust valve temp, combustion duration, location of 50% burn point with reference to different RPMs for ricardo wave modelling.

please reply if anyone has these datas.

Some of these things you're going to just have to use an approximation or a ballpark on. About half the items on your list though you can either a) readily find on the intertubes or b) measure.

mmw2753
12-11-2012, 08:31 AM
I'm not 100% on this but I think that the engine temps you are looking for are for the initial conditions, right? You can use the values from the 4 cylinder tutorial and they should be fine.

Simon Dingle
12-11-2012, 11:27 AM
Hi,

I suggest you have a look at this thread for the 50% mass fraction burned point.
http://fsae.com/eve/forums/a/t...20447151#79820447151 (http://fsae.com/eve/forums/a/tpc/f/125607348/m/96210315131?r=79820447151#79820447151)
I'm not sure if it's mentioned in this thread but the combustion duration can be estimated if you know the 50% mass fraction burned location and the spark timing.

Most of the other data can be estimated. For example John Heywood presents data for engine component temperatures in his book (Internal Combustion Engine Fundamentals).

Do you have the engine and access to a dyno? Or are you doing a purely theoretical project?

Rohit_Kumar
12-11-2012, 06:21 PM
thanks to all.
@simon
unfortunately we don't have working engine dyno right now but we do have honda cbr 600RR engine so we have to make the preliminary model purely theoretical.

Rohit_Kumar
12-11-2012, 07:07 PM
regarding temp.
if we observe first three cases of tut_si_16v they have varied engine RPM keeping A_F ratio and throttle angle constant and this variation of RPM (while keeping A_F ratio and throttle angle unchanged) is possible only by changing burning duration and 50% burn point so for a sensible wave modelling we need to have precise data of different temps and burning duration as well as 50% burn point according to RPM variation otherwise our wave modelling will make no sense if any one has done ricardo wave modelling and overcame this problem then please do reply.

Simon Dingle
12-12-2012, 03:21 AM
Rohit,

Firstly, it's good that you at least have an engine. This means that you can measure some of the things you listed.

What are you trying to achieve by modeling your engine? What do you want to know about it? Or is this a university exercise/disertation/thesis?

I have not gone through the WAVE tutorials but I would guess that "Tut_si_16v" is ther to show you the impact of varying the temperatures, and burn characteristics. I very much doubt that you will ever get all of the data that you have just asked for, not because people are unwilling to share, but because nobody knows.

As other people have said, you will have to estimate the values that you are after based on existing data from other engines.

Rohit_Kumar
12-12-2012, 05:54 AM
we are gonna participate in FS italy 2013 event for that i need to design my own intake and exhaust system for engine.
actually there are two options in wave:- 1)user entered temp data 2)build a conduction model and then wave will predict temp.
so i tried to run their given example first by conduction model and secondly by entering estimated temp values and compared BHP at a particular RPM and the difference in the two cases was of 10 BHP.
that's where all this temp data precision is required.