Andre wrote:Hello
View of a forum Certain American puts a honeycomb grid just before the carburetor or the butterfly for injection engines
This improves the passage of air around the butterfly, when partially open, it improves the supply in the tubing more equal for multicylinders.
I am going to test in 15 days on two lycoming engines one of 180hp and the other 135hp one is equipped with probe (EGT) exhaust (CHT) cylinder head, we will see if the temperatures are more uniform and also on the fuel flow meter
testing may take a few months.
There are two kinds of bee neither size tested
What happens to these tests? AMHA I don't know if this grid on André's plane is a good idea; The depressurized laminated air at the outlet of the grid could, at altitude, cause an endothermic effect and thus accelerate the freezing of the fuel ...
Endothermy on aircraft engines:
Gas expansion:
Freezing of carburettors of LPG, gasoline and kerosene engines on airplanes. The phenomenon is linked to a double localized endotherm: that of the partial vaporization of the fuel and that of the expansion in the combustion air intake manifold, linked to the pressure drop, mainly of filtration (especially when the filter is dusty, also when it is cold, also at altitude by lowering the saturated vapor pressure of the fuel) (this is less common with a turbocharger) (manufacturers often install thermostatted preheaters on the carburetor feet).
https://fr.wikipedia.org/wiki/R%C3%A9ac ... othermique