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maxSaleen · 03-22-2006, 03:19 PM

I think you guys will find this interesting.

I'm having a discussion with my professor (Benjamin Fries, professor of fluid dyanamics at UCF) about the new direct injection fuel technologies that bosch offers for IC engines. I mention that they claim one of the benefits is better fuel atomization, he laughs and says that inside the combustion chamber of an engine, atomization is a pointless goal.

I ask why....

He goes on to explain that as compression increases, laminar flow increases at an exponential rate, meaning that the air and the fuel seperate.

Our conversation was ended abrubtly at this point as I had to make another class...

Does this sound correct to any of you guys? If I'm interpreting his statement correctly, does this mean that fuel tends to cling to/seek the walls of the combustion chamber?

If so...

Wouldn't it be a good idea to groove the walls of the combustion chamber to increase its surface area and decrease the laminar flow boundary between the air and the fuel? Kinda like what this guy did:

http://www.popsci.com/popsci/futurec...cbccdrcrd.html

I'm curious to see what you guys think...

03-22-2006, 03:19 PM	#1
maxSaleen Cooling Savant Join Date: Dec 2004 Location: Orlando, Florida Posts: 383	Laminar flow and ICE engines... I think you guys will find this interesting. I'm having a discussion with my professor (Benjamin Fries, professor of fluid dyanamics at UCF) about the new direct injection fuel technologies that bosch offers for IC engines. I mention that they claim one of the benefits is better fuel atomization, he laughs and says that inside the combustion chamber of an engine, atomization is a pointless goal. I ask why.... He goes on to explain that as compression increases, laminar flow increases at an exponential rate, meaning that the air and the fuel seperate. Our conversation was ended abrubtly at this point as I had to make another class... Does this sound correct to any of you guys? If I'm interpreting his statement correctly, does this mean that fuel tends to cling to/seek the walls of the combustion chamber? If so... Wouldn't it be a good idea to groove the walls of the combustion chamber to increase its surface area and decrease the laminar flow boundary between the air and the fuel? Kinda like what this guy did: http://www.popsci.com/popsci/futurec...cbccdrcrd.html I'm curious to see what you guys think...