What Are the Main Functions of Automotive Sensors?
1 Answers
Automotive sensors primarily function to convert various operational conditions of the vehicle, such as speed, temperature of various mediums, and engine operating conditions, into electrical signals that are transmitted to the computer, ensuring the engine operates in its optimal state. Common automotive sensors include: 1. Intake Pressure Sensor: Reflects changes in the absolute pressure within the intake manifold, providing the ECU (Engine Control Unit) with a reference signal for calculating fuel injection duration; 2. Air Flow Meter: Measures the amount of air inhaled by the engine, supplying the ECU with a reference signal for fuel injection timing; 3. Throttle Position Sensor: Measures the opening angle of the throttle, providing the ECU with a reference signal for fuel cutoff, fuel/air ratio control, and ignition timing correction; 4. Crankshaft Position Sensor: Detects the crankshaft and engine speed, supplying the ECU with a reference signal for determining ignition timing and operational sequence; 5. Oxygen Sensor: Detects oxygen concentration in the exhaust, providing the ECU with a reference signal to control the fuel/air ratio around the optimal (theoretical) value; 6. Intake Temperature Sensor: Detects intake air temperature, supplying the ECU with data to calculate air density; 7. Coolant Temperature Sensor: Detects coolant temperature, providing the ECU with engine temperature information; 8. Knock Sensor: Installed on the engine block to specifically detect engine knocking conditions, providing the ECU with signals to adjust ignition timing.
