Dear Khaleel

I wish the following attached papers will help you

Regards

Kind regards,

Mario

We tried that 30 years ago, back in the "adiabatic" engine days.  Found no gain in thermal efficiency, a marginal reduction in the heat load through the piston on a cast iron piston.  Plasma spray coatings (then, at least) didn't stick well to the piston.  The engine is not adiabatic, and the heat exchange between the wall and gasses is affected in an adverse manner by the higher wall temperature.  There is lots of literature about this in the 70's an 80's. I don't know of anybody who's considering it today.

It sounds like a great idea, but the previous respondents have added some very real issues.   What you have to factor in are the huge investments people have made in current technology, which is reasonably cheap (aluminium alloys) and can be made anywhere.  Even China (in my direct experience) can produce some world-class pistons, despite some high-profile failures (again I have felt the results of this).

Motor manufacturers are often quite risk-averse - look at the many attempts to remove/replace poppet valves with spheroids or electrically-operated ones.

Ceramic exhaust pipe coatings (as slurry) has even been slow on the uptake, despite its ease of application and many advantages in preventing down-pipe discolouration on motorcycles, or allowing the cat to warm up quickly in the critical emissions-controlled first few minutes from cold, for example.

What seems like a good theoretical concept needs matching against real-world benefits and commercial realisation.

Dear sir s i thank so much for these good and rich answer  and i agree for all idea that you give .

Dear colleagues

I haven,t see anyone discuss the technology from cost side. Doe it cheap, can it reduce the piston costs? I think no. Then it is high cost technology with low advantage. It seems to me it has no future in engine manufacturing.

Regards