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Oxygen sensors are critical components in automotive systems that monitor the level of oxygen in the exhaust gases of an internal combustion engine. They are typically made from materials such as zirconia or titanium dioxide and operate by generating a voltage signal that corresponds to the oxygen content in the exhaust. This information is used by the engine control unit (ECU) to optimize the air-fuel mixture for efficient combustion and reduced emissions.
| Material | Zirconia or titanium dioxide |
| Operating temperature range | -40°C to 900°C |
| Voltage output | 0 to 1 volt |
| Response time | Typically less than 100 milliseconds |
| Connector type | Varies by application, typically 4 or 5 pin |
When selecting an oxygen sensor, consider the specific application and vehicle model to ensure compatibility. It's important to specify the required connector type, operating temperature range, and any necessary certifications for emissions compliance. Quantities may vary based on whether the purchase is for replacement parts or bulk orders for manufacturing.
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It measures the level of oxygen in exhaust gases to optimize combustion and reduce emissions.
Typically every 60,000 to 100,000 miles, but this can vary based on vehicle and usage.
Common signs include poor fuel economy, increased emissions, and engine performance issues.
No, it's essential to use a sensor that is compatible with your specific vehicle make and model.
Generally, they do not require maintenance, but keeping the exhaust system in good condition can prolong their life.
Upstream sensors are located before the catalytic converter, while downstream sensors are located after it.