01-09-2015, 12:42 PM
|
#1 (permalink)
|
|
EV test pilot
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
Posts: 4,435
Thanks: 17
Thanked 663 Times in 388 Posts
|
Thermal Imaging for improving fuel economy
Hi everyone!
It's COLD here in January in Wisconsin right now! Which just gets me thinking about how to keep the 2004 Prius warm and my wife happy, as she is the primary driver.
I finally got the garage cleaned out enough to fit the car back in there, and I have a timer going to run the block heater for an hour or two before the car would be used.
I also recently got a thermal camera. I started playing around with that to take a look at the car.
For example, I noticed that after a drive that the TIRES were one of the warmest things on the car!
I also took a photo of the car after running the block heater for about 2.5 hours. Clearly the hood is the warmest thing after that
Has anyone else played around with thermal imaging for troubleshooting or improving fuel economy on cars? Let me know. More on my blog: Garages, Block Heaters, and Thermal Cameras
|
|
|
|
|
The Following 12 Users Say Thank You to bennelson For This Useful Post:
|
aerohead (02-26-2015), Daox (01-09-2015), dirtydave (01-09-2015), IamIan (01-11-2015), jeff88 (01-09-2015), kurzer (02-27-2015), MetroMPG (01-09-2015), niky (02-26-2015), Occasionally6 (01-10-2015), OG VX (02-26-2015), pgfpro (01-09-2015), planetaire (01-09-2015) |
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
01-09-2015, 01:43 PM
|
#2 (permalink)
|
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
|
That is very interesting Ben. The tire temperature is unexpected IMO.
|
|
|
|
|
01-09-2015, 01:50 PM
|
#3 (permalink)
|
|
Master EcoModder
Join Date: Mar 2013
Location: Grand Rapids, MI
Posts: 838
Thanks: 1,380
Thanked 209 Times in 155 Posts
|
It looks like we need to start using tire blankets!
|
|
|
|
|
The Following User Says Thank You to mikeyjd For This Useful Post:
|
|
|
01-09-2015, 02:38 PM
|
#4 (permalink)
|
|
Master EcoModder
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745
Thanks: 206
Thanked 420 Times in 302 Posts
|
do you have snow tires? this makes me want to insulate the engine/hood more.
__________________
|
|
|
|
|
01-09-2015, 02:39 PM
|
#5 (permalink)
|
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
|
He does, says so in the blog he linked.
|
|
|
|
|
01-09-2015, 02:39 PM
|
#6 (permalink)
|
|
Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,530
Thanks: 4,078
Thanked 6,978 Times in 3,613 Posts
|
Very fun.
Clearly the tires & wheels are hot due to the massive amount of AERO DRAG you have because you forgot to put on your smooth wheel covers.  |
|
|
|
|
The Following 2 Users Say Thank You to MetroMPG For This Useful Post:
|
|
|
01-09-2015, 02:47 PM
|
#7 (permalink)
|
|
Master EcoModder
Join Date: Jul 2008
Location: Silly-Con Valley
Posts: 1,479
Thanks: 201
Thanked 262 Times in 199 Posts
|
If you add more air to the tires, they will flex less and generate less heat through internal friction. Their rolling resistance will also go down. Not sure if it would be enough to show on your IR photo, but could be worth testing.
-soD
|
|
|
|
|
The Following User Says Thank You to some_other_dave For This Useful Post:
|
|
|
01-09-2015, 02:54 PM
|
#8 (permalink)
|
|
EV test pilot
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
Posts: 4,435
Thanks: 17
Thanked 663 Times in 388 Posts
|
Yes, there's snow tires on the Prius right now, on steel rims, but I don't have the hub caps on it. It got so cold and snowy right after I put the snow tires on that I didn't want to put the hub caps on over all the ice/snow/salt gunk, at least not until it warms up enough to wash the rims.
The hub caps I have are the cheapest most aerodynamic ones I could find on the clearance bin at the auto parts store last winter.
I have no idea how much heat is created in the rubber of the tires on a snow tire vs an all-season radial! I do know that the snow-tires are a softer rubber and that they keep the car on the road better.
Also, just so you know, the range of temperatures in the first photo is about 35 degrees Fahrenheit and the range of temperatures shown in the block heater photo is about 20 degrees. For example, a very bright orange in one photo may be 5 degrees, but that doesn't mean very bright orange is 5 degrees in another photo. It's relative, similar to auto-iris on a standard video camera.
|
|
|
|
|
The Following User Says Thank You to bennelson For This Useful Post:
|
|
|
01-09-2015, 08:09 PM
|
#9 (permalink)
|
|
Master EcoModder
Join Date: May 2009
Location: Australia
Posts: 1,510
Thanks: 325
Thanked 452 Times in 319 Posts
|
How much can one expect to pay for one of these doo-dads?
|
|
|
|
|
01-09-2015, 08:55 PM
|
#10 (permalink)
|
|
Master EcoModder
Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,796
Thanks: 226
Thanked 1,353 Times in 711 Posts
|
Quote:
|
I also took a photo of the car after running the block heater for about 2.5 hours. Clearly the hood is the warmest thing after that
|
Clearly not enough hood insulation.
Time for a engine blanket... 
>
|
|
|
|
|
The Following User Says Thank You to redneck For This Useful Post:
|
|
|
