Re: [MBZ] Intercoolers
Once I figured out what an intercooler does I had a thought: Since most (if not all) cars with intercoolers have A/C, why not integrate the intercooler heat exchanger with the cooling system and get some SERIOUSLY cooled and densified intake charge. How much more would that increase the power and efficiency? Greg -Original Message- From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com] On Behalf Of relng...@aol.com Sent: Tuesday, October 02, 2012 8:10 PM To: mercedes@okiebenz.com Subject: Re: [MBZ] Intercoolers ...That's interesting, I would have thought that even though the air is less dense at altitude it is also a lot colder... Compressing the incoming air raises it's temperature and the air-to-air intercooler cools it down but not to ambient, of course. Without the intercooler, the engine temps can elevate to the point where the throttle setting must be reduced. RLE ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Intercoolers
To answer that properly.. you have to do a lot of math. The first part of the long equation is... the number of cubic feed of air that passes through the engine at a set RPM. [imagine, flat ground, cruise, no load but car weight] Having the CFM number at that set RPM then do another calculation of the ambient air temp, the temp rise from compression through the turbo, the degrees of cooling required to make target temp for intake air, THEN how large to make the proposed AC system to cool that volume of air, that required number of degrees That round of calculation only covers ONE set of paramaters... no do it for all speeds, all loads, and all ambient temps/compressor temp rise. I think you will find you will be amazed at the CFM flow of the engine at cruise RPM for example.. and the AC system size requirement at the end of calcs... quickly... you need a trailer to carry the AC system.. which increases the engine load... which increases the need for more AC... etc etc etc Ooppps But,, good luck with that... keep thinking... Grant... On Wed, Oct 3, 2012 at 12:09 PM, Greg Fiorentino gf...@dslnorthwest.netwrote: Once I figured out what an intercooler does I had a thought: Since most (if not all) cars with intercoolers have A/C, why not integrate the intercooler heat exchanger with the cooling system and get some SERIOUSLY cooled and densified intake charge. How much more would that increase the power and efficiency? Greg -Original Message- From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com] On Behalf Of relng...@aol.com Sent: Tuesday, October 02, 2012 8:10 PM To: mercedes@okiebenz.com Subject: Re: [MBZ] Intercoolers ...That's interesting, I would have thought that even though the air is less dense at altitude it is also a lot colder... Compressing the incoming air raises it's temperature and the air-to-air intercooler cools it down but not to ambient, of course. Without the intercooler, the engine temps can elevate to the point where the throttle setting must be reduced. RLE ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Intercoolers
SERIOUSLY cooled and densified intake charge. How much more would that increase the power and efficiency? Maybe not at all, since the HP to cool the air is coming from the engine. Lotta math would be required to see if it was effective in any way, and the system would need some mechanical reconfiguration compared to 'normal'. (In my truck the evaporator is in front of the intercooler, and both are in front of the radiator.) -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Intercoolers
...That's interesting, I would have thought that even though the air is less dense at altitude it is also a lot colder... Compressing the incoming air raises it's temperature and the air-to-air intercooler cools it down but not to ambient, of course. Without the intercooler, the engine temps can elevate to the point where the throttle setting must be reduced. RLE ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Intercoolers
Intercooling also increases the charge density, which means more air per stroke which means you can burn more fuel. Critical in gassers, since too high an inlet temp means pre-ignition, or worse, detonation, but handy in diesels for more power. Peter ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
