underboost

Etymology

From under- + boost.

underboost means the process of underboosting. Lexicurio rates it Rare gem — a strength score of 80 out of 100.

noun

The process of underboosting.“After much analysis and compromise of the variables such as RPM, altitude, carburetor air temperature, fuel/air ratio, that affect BMEP, a simple solution has been arrived at to prevent underboost.”
An instance of underboost.“So pilots, keep the pressure on to stop underboosts and watch the red lines to stop overboosts.”

verb

To create too little pressure in an engine's combustion chamber.“It enables you to properly time the automatic loading of the entire system so that the regulator will not overboost, which would cause a hunting action, or so that it will not underboost and cause a deficiency in the pressure.”