Combustion Model

Ghali

Hi every body !

I am really gladed to be here to ask my very first question. I am working on a scolar project. My objective is creating a combustion model for a 2 stroke engine. The model that i have proposed is a 0D one, I have succed to describe the majority of mecanisms that i have found in books or by analysing experimental datas. Now I have one probleme which is that I can't express the Ignition advance as a fonction of my two principal parameters of combustion which are half burning time and burning time. I have tried to use Wiebe combustion to optimise my specific consumption, but the road is always blocked.

Do you have an idea how It can works. Thank you in advance for your ideaaas !!

Ghali