Sulfur dioxide (SO2) is irritating to eyes, skin and respiratory system. Volcanic Smog (vog) is produced from SO2 gas and is a hazard in Hawaii. Scientists monitor SO2 emission rates at KÄ«lauea volcano. Gas Plume during the 1984 eruption of Mauna Loa, Hawaii blocks out the sun.
Control Unit (CU) A control unit (CU) handles all processor control signals. It directs all input and output flow, fetches code for instructions from microprograms and directs other units and models by providing control and timing signals.
What does the ECU do? Really, you can think of the engine control unit as one part of your carâs brain (itâs responsible for controlling the engine). Technically, the engine control module is an electrical control unit, but so is the TCU and a number of other controllers aboard your car. Your ECU is responsible for monitoring all aspects of engine operation, making adjustments based on driver input, and more.