Use of Fit sensor

The function of the Fit sensor is as follows: 1. Intake pressure sensor: it reflects the change of absolute pressure in intake manifold and provides reference signal for ECU (Engine Electronic Control Unit) to calculate 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.