|Mass airflow sensor
|| Mass airflow sensors detect the mass of air entering the engine directly, using a hot wire, or a heated ceramic plate resistor.
|Manifold absolute pressure sensor
||Manifold absolute pressure sensors measure changes in intake manifold pressure caused by changes in engine speed and load, and convert them into electrical signals.
|Air vortex sensor
||The air vortex sensor uses whirlpools of air, produced by a vortex-generating rod, to measure the volume of air entering the engine. This is converted to an electrical signal that is transmitted to the ECU.
|Fuel system sensor
||The fuel system sensor determines how much fuel the engine needs at that instant, then grounds the injection valve circuit, to open the solenoid-operated injectors. This information is relayed as electrical signals to the ECU.
||Temperature sensors relay information to the ECU on engine coolant and intake manifold temperature.
|Throttle position sensor
||Throttle position sensors relay information to the ECU on throttle position, to allow adjustments to fuel settings, according to operating conditions.
|Exhaust gas oxygen sensor
||Exhaust gas oxygen sensors monitor the oxygen content of the exhaust gas, and relay this information, by means of a voltage signal, to the control unit.
|Crank angle sensor
||Crankshaft position and speed can be detected by inductive-type sensors which act as small alternators. The frequency of the pulse they transmit allows the ECU to detect engine speed.
|Hall effect voltage sensor
||A Hall effect sensor provides voltage pulses that are generated by alternately shielding the sensor from a magnetic field, then exposing it. An ECU uses this signal to detect engine speed and control ignition timing.