absolute pressure controller

absolute pressure controller

A type of turbo-charger controller that limits the maximum discharge pressure the turbocharger's compressor can build up when the aircraft is flying below its critical altitude. Absolute pressure is indicated by a manifold absolute pressure (MAP) gauge.
References in periodicals archive ?
A common Continental design is an absolute pressure controller (or a variation called a slope controller) that samples upper deck pressure and then regulates oil pressure to position the wastegate to maintain a constant manifold pressure.
I have spoken with the director of maintenance for Tornado Alley Turbo and he told me that the absolute pressure controller (not slope) for the wastegate is adjusted to be slightly less than the theoretical 29.