Miniature Lambda Sensors for Engine-Control Systems

Small, lightweight sensors that exploit the unique characteristics of nanoceramics are being developed for use in measuring air/fuel ratios in the exhaust gas flows of advanced aircraft engines. Adaptive control systems would process the readings from these sensors, along with other sensory and control inputs, to generate engine commands to maximize fuel efficiency and minimize emissions of undesired exhaust products. Sensors and control systems of this type could also be used to enhance the operation of automotive and other internal-combustion engines that burn a variety of fuels, and of stationary combustors like furnaces and kilns.