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Mathematical Relation Between Mon And Ron

octane number motor octane number research octane number gasoline petrol engine fuels knocking

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#1 Napo

Napo

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Posted 29 April 2020 - 08:32 PM

Please, Can you help me?

 

Are there a mathematical relation (equation) between octane number MON and RON or vice versa?

 

Maybe an article (paper) or reference about this question.

 

Napo.

 

 



#2 Bobby Strain

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Posted 29 April 2020 - 10:43 PM

Good luck. There are blending programs that predict both. But they are based on knock engine tests. So, it's a lot of data fitting for blend relations of components. Of course, the final certification is via knock engine tests.

 

Bobby



#3 gegio1960

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Posted 30 April 2020 - 02:25 AM

Hi Napo.

As already stated by Bobby, it can't exist a generalized correlation between RON and MON.

If you restrict the field to (almost) constant qualities of the blended streams (eg if you only consider reformate and isomerate in various quantities) you could create your own correlation, having some starting data from the lab.

About 20 years ago, I made some work around the Twu and Coon papers based on the above principles.

One of the papers is herewith attached. I don't think it will be difficult to find others on the web.

Hoping this helps.

Kind regards,

gegio

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