How The Dodge Demon Uses Air Conditioning For More Horsepower!
03-14-2018, 01:31 PM
#1
How The Dodge Demon Uses Air Conditioning For More Horsepower!
I have been interested in this for a while. On the street this is nice as it already has everything but a dedicated strip car could do so many other things such as Nitrous.
This is an easier to understand explanation and some of the OEM parts are shown. Surprising how small of an evaporator they use for the added cooling of the water. Imagine what you could do with a full size automotive evaporator?
This is an easier to understand explanation and some of the OEM parts are shown. Surprising how small of an evaporator they use for the added cooling of the water. Imagine what you could do with a full size automotive evaporator?
03-14-2018, 02:15 PM
#2
yup, an oem is the one to make the idea of the killer chiller work. it was a designed originally played with by ford for the supercharged lightning pickups, but it got scrapped before production. the company Killer Chiller took the idea and ran with it, and it had some success on the ford stuff. a number of people tried it on the cobalt way back in the day, and it just didnt show the benefits expected. it was also quite expensive. i think it was around $500 for the refrigerant to water heat exchanger, add in a bunch of a/c lines and fittings, then get those a/c lines crimped together and the system charged, it was costly.
newer a/c systems have the advantage of variable a/c compressors that draw a lot less horsepower to drive them.
newer a/c systems have the advantage of variable a/c compressors that draw a lot less horsepower to drive them.
03-14-2018, 02:41 PM
#3
No doubt... Incorporating the data into the DIC panel and also using it as an after cooler is nice. The amount they are further dropping the temp is very low. Once i saw the evaporator they are using it was no wonder.
The video is way off on how they are splitting the cooling but it gets the point across easier. It's no harder than adding a rear A/C unit in a large vehicle, Limo or van. Y to a separate TXV and off to the heat exchanger then back to the suction side via another Y. Although The Demon has either A/C for the occupants or the Engine. Not both due to the low capacity of the compressors these days. It's not like they are running a big ass A6 compressor of the 70's and 80's that could cool a house.
I did catch that they do shut the compressor off above 4500 RPM so during the 1/4 mile it isn't running. It's the cooling that has already been done before going WOT. Since they are super cooling the coolant rather than the air, this will work for the next 12 to 13 seconds.
The video is way off on how they are splitting the cooling but it gets the point across easier. It's no harder than adding a rear A/C unit in a large vehicle, Limo or van. Y to a separate TXV and off to the heat exchanger then back to the suction side via another Y. Although The Demon has either A/C for the occupants or the Engine. Not both due to the low capacity of the compressors these days. It's not like they are running a big ass A6 compressor of the 70's and 80's that could cool a house.
I did catch that they do shut the compressor off above 4500 RPM so during the 1/4 mile it isn't running. It's the cooling that has already been done before going WOT. Since they are super cooling the coolant rather than the air, this will work for the next 12 to 13 seconds.
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