Abstract
Universal Exhaust Gas Oxygen (UEGO) Sensor is one of the most important sensors for the close-loop air-fuel-ratio control system of automobile engine. Due to its special structure, controller is used to control sensors temperature so that UEGO sensor can work normally. Aiming at nonlinear characteristic of the temperature control module, a subsection heating control method and a PID algorithm is studied. UEGO heating controller is implemented by means of Motohawk real time simulation system. Experimental results show that under the condition of different temperature, the UEGO is also able to maintain the best working temperature.
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