What sensor of Volkswagen controls fuel injection?

1. Intake pressure sensor: it reflects the change of absolute pressure in the intake manifold and provides a reference signal for ecu (Engine Electronic Control Unit) to calculate the fuel injection duration;

2. Throttle position sensor: measures the throttle opening and provides it to ecu as a reference signal for fuel cut-off, air-fuel ratio control and ignition advance angle correction;

3. Air temperature sensor: detects the intake air temperature and provides it to ecu to calculate the air density; Coolant temperature sensor: detects the temperature of coolant and provides engine temperature information to ecu;

4. Crankshaft position sensor: detects the rotating speed of crankshaft and engine, and provides it to ecu as reference signal to determine ignition timing and working sequence;

5. Oxygen sensor: detect the oxygen concentration in the exhaust gas and provide it to ecu as a reference signal to control the air-fuel ratio near the optimal value (theoretical value); Knock sensor: installed on the cylinder block to detect the knock of the engine and provide it to ecu to adjust the ignition advance angle according to the signal.