Air/Fuel Gauges

Air and fuel gauges in motorsport vehicles are essential for monitoring the air-fuel ratio (AFR), which is critical for engine performance and efficiency. These gauges use wideband oxygen sensors placed in the exhaust system to measure the concentration of oxygen in the exhaust gases. The sensor provides a voltage signal proportional to the AFR, which the gauge then displays. Maintaining an optimal AFR ensures complete combustion, maximising power output while preventing engine knock and excessive emissions.

Technically, air and fuel gauges must be highly accurate and responsive to provide real-time data crucial for engine tuning. Digital displays are common, offering precise readouts and features such as data logging and programmable alerts for lean or rich conditions. The sensors and gauges are built to withstand high temperatures and vibrations typical of motorsport environments, ensuring durability and reliability. Proper calibration and high-quality wiring are vital for accurate sensor data transmission, allowing drivers and technicians to make informed adjustments to the engine management system for optimal performance.