What are the sensors on the engine and their respective functions?
2 Answers
The sensors on the engine and their respective functions are: 1. Air flow sensor, which converts the amount of air inhaled into an electrical signal and inputs it to the engine computer; 2. Intake pressure sensor, which measures the difference between the absolute pressure in the intake pipe and the ambient atmospheric pressure when the engine is running; 3. Throttle position sensor, which converts the angle of the throttle opening into an electrical signal and sends it to the computer; 4. Camshaft position sensor, which senses the position of the piston to determine the ignition timing; 5. Crankshaft position sensor, which controls the ignition timing; 6. Oxygen sensor, which detects the exhaust emission value; 7. Knock sensor, which prevents the engine from knocking; 8. Intake temperature sensor, which adjusts the fuel injection amount; 9. Water temperature sensor, which precisely controls the duration of fuel injection based on changes in engine temperature conditions.
I previously encountered an engine issue, and the mechanic warned that a sensor might be malfunctioning. There are quite a few sensors on the engine. For example, the oxygen sensor monitors the oxygen level in the exhaust pipe, allowing the computer to adjust the fuel-to-air ratio, which saves fuel and reduces black smoke. Another example is the air flow sensor, located on the intake pipe, which measures the intake air volume to ensure precise fuel injection. The crankshaft position sensor is installed near the crankshaft to detect how fast the engine is rotating, thereby controlling the ignition timing. Similarly, the camshaft position sensor works in coordination to determine the opening and closing times of the valves. If these sensors fail, the car may feel sluggish, consume more fuel, or trigger a warning light. During routine maintenance, I recommend using a diagnostic tool to check them, promptly cleaning off dust or replacing faulty components. This can extend the engine's lifespan and avoid the hassle of breaking down on the road.
