All certified airworthy aircraft engines have data plates attached that gives all the identifying info. If the plate is missing, the engine is not legally airworthy no matter what the actual condition.
Your question isn't clear. Are you asking WHY reciprocating engines for aircraft are called heat engines, or are you asking whether or not they are considered heat engines? Or are you asking...
aircraft engines are normally reciprocating engine or pistan engine, the Aircraft instruments in a reciprocating engine are
cylinder
piston
and so...................
High performance piston aircraft engines do have valve overlap, just like high performance engines used in land vehicles, and for the same reasons.Listen to the Continental O-470, IO-520, IO-550,...
I am unsure what you are asking but:The cooling oil nozzle is arraigned so the underside of the piston is sprayed with oil to cool the piston crown.This is done on high stress engines as the pistons...