At this point they are considered incertae sedis;in other words, we know that they are theropods; and probably coelurosaurs; but we don't know who they are related to or how they fit into the big picture of theropod phylogeny.
Idle speed is adjusted by means of the idle control valve, which is a solenoid-operated valve that is generally automatically adjusted by a computer. One problem that can occur with this component is a loss of power (from a severed line or a short) but a more common problem is simply dirt and grime.
Control valves - For modulating or on/off control of hot or chilled water and low pressure steam. Globe valves, ball vales, gate valves, and butterfly valves. Actuators to open/ close dampers, and control valves. Multi signal and super fast acting actuators available. Control actuators are used to open, close, and modulate air dampers and water valves. Valves for modulating or on/off control of hot or chilled water and low pressure steam. Globe valves, ball vales, gate valves, and butterfly valves.