A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Surge definition, a strong, wavelike, forward movement, rush, or sweep: the onward surge of an angry mob. See more.
Compressor surge is a phenomenon experienced when boost pressure inside the intake tract builds up and has no convenient relief method. This is usually caused from the throttle plate closing quickly.Changing load conditions (off throttle) resulting in varying amounts of exhaust gas can also simulate such conditions.he unique sound is caused by the pressure charge encountering the spinning compressor wheel on its escape from the engine. Compressor surge goes by many other names such as compressor stall, turbo dose or dosing, pigeon, turbo flutter/chatter and sometimes mistakenly wastegate chatter.