Raptor lightning / electric??

[amschind]

The 5.0 uses a ceramic hybrid with its PTWA cylinder liners. It’s been quite successful beyond the initial teething issues figuring out the correct ring to control the oil that better sticks to the cylinder bore. The cylinder liners are Nanocrystalline Iron with FeO (ceramic) hybrid. The engineers that designed the 3rd and 4th gen 5.0L V8 stated in all the durability testing the 5.0 still has the cross hashing at the 200,000 mile mark, and that cylinder bore wear was non-existent. They also state you do not need to hone the bores when you rebuild these motors, the coating is that hard. New rings and pistons on rebuild, but no work to the bores. Ford does the same practice for the remans on these engines, but I recall reading that Ford can re-do the process on remans in the event it’s required (apparently not often). The one caveat is that you need a new block if you have a catastrophic failure that cracks the coating.

That is awesome. It makes it more curious why they aren't coating piston faces (or are they?). The one part of the Carnot equation that we can adjust is the hot temperature; Brayton turbine engines have benefitted quite a bit from ceramics pushing temperatures up, but we haven't seen the same advances for piston engines. I'm thrilled to see evidence that it is penetrating into the mass market.

Sponsored

 

[HammaMan]

That is awesome. It makes it more curious why they aren't coating piston faces (or are they?). The one part of the Carnot equation that we can adjust is the hot temperature; Brayton turbine engines have benefitted quite a bit from ceramics pushing temperatures up, but we haven't seen the same advances for piston engines. I'm thrilled to see evidence that it is penetrating into the mass market.

I'm surprised ford hasn't ceramic'd the turbine housings / manifolds / down pipes. They should be able to nail down performing such things at scale economically. Though they do skimp in the wrong areas to save a couple dollars.

Given the drastic tailpipe emissions cuts coming 2027, I wouldn't be surprised to see some form of a hydrogen generator start making its way into vehicles. Hydrogen alone in gas engines increases thermal efficiency but increases nox while decreasing other emissions. In diesels w/out o2 sensors pure HHO can be fed to the engine decrease all emissions significantly. Modern gas engines see the extra oxygen and increase fuel as it believes its running lean. Given hydrogen's higher combustion temp, treated cylinder walls and pistons would be wise.

 

[amschind]

I'm surprised ford hasn't ceramic'd the turbine housings / manifolds / down pipes. They should be able to nail down performing such things at scale economically. Though they do skimp in the wrong areas to save a couple dollars.

Given the drastic tailpipe emissions cuts coming 2027, I wouldn't be surprised to see some form of a hydrogen generator start making its way into vehicles. Hydrogen alone in gas engines increases thermal efficiency but increases nox while decreasing other emissions. In diesels w/out o2 sensors pure HHO can be fed to the engine decrease all emissions significantly. Modern gas engines see the extra oxygen and increase fuel as it believes its running lean. Given hydrogen's higher combustion temp, treated cylinder walls and pistons would be wise.

The stock exhaust manifolds are a tragedy. If you look at the stock manifold vs the full race manifold, it's like looking at the difference between a part designed by someone who knew how flowing fluids work and someone who didn't. Ford engineers pretty clearly understand CFD and have amazing software to model it, so the only excuses that I can come up with are laziness and/or deliberate malfeasance.

Stock log manifold vs part that cost as most 1.5x

Sponsored