Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Hi pressure in front of truck at cruising speed

freebeard · 06-10-2022, 12:19 PM

[QUOTE]Is there any value in letting that high pressure bleed off into the engine compartment? ...effectively reducing some of the high pressure areas at the front grill...[/QUOTE

Ultimately, the high pressure at the stagnation point is matched by a low pressure area at the rear. How one gets from the one to the other determines the drag. IOW the high pressure is a feature not a benefit.

All air into the engine compartment should go though the radiator. Outflow can be between the frame rails or through the inner wheel well.

Air curtains can be beneficial, but the 2022 Dodge seems to have none so you'd be on you own. I think Ford has a horizontal slot feeding a vertical one.

06-10-2022, 12:19 PM	#2 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 28,725 Thanks: 8,154 Thanked 8,937 Times in 7,379 Posts	[QUOTE]Is there any value in letting that high pressure bleed off into the engine compartment? ...effectively reducing some of the high pressure areas at the front grill...[/QUOTE Ultimately, the high pressure at the stagnation point is matched by a low pressure area at the rear. How one gets from the one to the other determines the drag. IOW the high pressure is a feature not a benefit. All air into the engine compartment should go though the radiator. Outflow can be between the frame rails or through the inner wheel well. Air curtains can be beneficial, but the 2022 Dodge seems to have none so you'd be on you own. I think Ford has a horizontal slot feeding a vertical one. __________________ . .Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster ____________________ . .Three conspiracy theorists walk into a bar --You can't say that is a coincidence.