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Engine Specific Info and Questions => IDI Engine => Topic started by: Riverfurm on January 22, 2009, 02:01:03 pm

Title: Cold Weather Intercooler
Post by: Riverfurm on January 22, 2009, 02:01:03 pm

The weather here in Eastern Pa. has been cold (20f and below). My 1.6 turbo seems to have more power in this weather. Do you think this is the same affect an intercooler would have?

Title: Cold Weather Intercooler
Post by: dillenger1 on January 22, 2009, 02:04:28 pm

yep,Even at these temps my cooler still cools the charge by 200 f.You would think the ingested cold air would create a cold enough charge.

Title: Cold Weather Intercooler
Post by: arb on January 22, 2009, 02:07:13 pm

The Thermodynamic efficiency of all ICE are determined by the temperature differential, so colder in = more power. Aircraft are even allowed by law to carry 10% more weight in Alaska than they are certified for in the warm air of our lower 49.

Title: Cold Weather Intercooler
Post by: Riverfurm on January 22, 2009, 02:22:54 pm

So if I had an IC their would be even more power in the winter.

Title: Cold Weather Intercooler
Post by: dillenger1 on January 22, 2009, 02:43:24 pm

yah cuz it seperates the turbos heat from the charge.

Title: Cold Weather Intercooler
Post by: zyewdall on January 22, 2009, 03:50:06 pm

My NA diesel is noticeably more powerful in the winter than in the summer.... on a 20F day, it's quite a little terror.  One a 100F+ day, it's a slug -- barely pulling some hills in 2nd gear, that it would pull in 3rd gear in the winter.  So, yes..... inlet air temp (either from the weather... or from having an intercooler on a turbo) does seem to make a world of different on diesels.  The colder the better (once you get it started, that is.... :)

And my gas truck has a exhaust manifold preheater, to keep the carbureator for icing up in cold weather   :roll:

Z

Title: Cold Weather Intercooler
Post by: jtanguay on January 22, 2009, 04:07:48 pm

the performance could also be attributed to the fuel being cooler as well.  theres a specific range where the fuel burns best... anyone with knowledge of TDI's know what the range is for fuel temp???

even compressing cold air will make it heat up.  maybe if you can find -80C air, then it might not make too much of a difference  :lol:

Title: Cold Weather Intercooler
Post by: dillenger1 on January 22, 2009, 07:05:14 pm

So once its combusted the air would be the same temp after? in a controled test(no intercooler)With an engine running cold air and one sucking hot air.I wonder what the immediate temp difference would be?I wonder if it would remain linear with the colder the air the colder the combustion.I mean could air be so cold it wouldnt combust?hmmmmmm..,..

Title: Cold Weather Intercooler
Post by: DYNOMAX on January 23, 2009, 07:22:47 pm

Quote from: "jtanguay"

the performance could also be attributed to the fuel being cooler as well.  theres a specific range where the fuel burns best... anyone with knowledge of TDI's know what the range is for fuel temp???

Bmw using a system in its 330D 335D diesel engines to keep the temperature of the fuel.

They got a heater and a small fuel cooler in the engine compartment.
Everything is controlled by a computer.

Have heard that 7-10 degrees C is the most optimal temperature.

Title: Cold Weather Intercooler
Post by: Smokey Eddy on January 23, 2009, 07:27:10 pm

engines also run better when it's raining  :D

Title: Cold Weather Intercooler
Post by: Smokey Eddy on January 23, 2009, 07:28:23 pm

Quote from: "dillenger1"

So once its combusted the air would be the same temp after? in a controled test(no intercooler)With an engine running cold air and one sucking hot air.I wonder what the immediate temp difference would be?I wonder if it would remain linear with the colder the air the colder the combustion.I mean could air be so cold it wouldnt combust?hmmmmmm..,..

time to get out the diving tanks?