UEGO Sensor Control Modules

The UEGO (Universal Exhaust Gas Oxygen) sensor is a very useful device for engine development and engine fuel control purposes. This sensor is sometimes referred to as a wide-range or wide-band oxygen sensor, since it can measure the equivalence ratio of the combusted fuel-air mixture over a wide range and not just at stoichiometry, like conventional switching oxygen sensors.

EControls has been designing UEGO sensor control circuitry since 1994. These circuits were first incorporated into an engine control module (ECM) for a heavy-duty gas engine manufacturer which provided the first truly lean-burn closed-loop spark-ignited natural gas on-highway engine control system. Since that time EControls has designed and manufactured a variety of products using UEGO sensor technology, both as subsystems within the ECM and as stand-alone sensor controllers.