Function and benefits - Precise air-fuel ratio control - Real-time feedback to the engine control unit: the oxygen sensor accurately monitors exhaust oxygen content, converts it to a voltage signal, and sends it to the ECU. The engine then adjusts the air-fuel ratio on the fly based on actual operating conditions, keeping the mixture close to the theoretical ratio - Performance and efficiency gains: improved combustion efficiency, enhanced engine power, and better fuel economy - Fast response: quick sensing and signal processing for timely corrections Key attributes - Function: monitors exhaust O2, provides voltage feedback, and enables real-time AFR adjustment - Performance: improves combustion efficiency, power, and fuel economy - Compatibility: designed for ECU-based engine management systems that rely on O2 sensor feedback - Real-world reliability: supports stable operation under varying driving conditions Applications and use scenarios - Modern gasoline vehicles with electronic engine control units (ECUs) requiring precise AFR regulation - Retrofit or replacement in vehicles to restore or improve optimal air-fuel mixture and efficiency - Engines operating under variable conditions (cold starts, rapid acceleration, fluctuating loads) where fast sensor feedback maintains effective combustion This description preserves the original purpose and function while presenting clear, customer-focused benefits and practical use cases.