What are the functions of engine sensors?
2 Answers
There are many sensors on the engine, each with different functions, including air flow sensors, intake pressure sensors, intake temperature sensors, etc. Here is the relevant introduction of each sensor: 1. Air flow sensor: Its function is to measure the air flow entering the engine, installed on the air bypass channel. 2. Intake pressure sensor: It detects the negative pressure changes in the intake manifold to sense the amount of air intake by the engine, installed on the intake manifold. 3. Intake temperature sensor: When the engine is running, the mass of air entering the engine is related to the intake temperature and atmospheric pressure. When the intake temperature is low, the air density is higher, and the mass of the same volume of air is greater. Conversely, when the intake temperature is high, the mass of the same volume of air is smaller.
In my daily driving experience, engine sensors are like the eyes and ears of a car, constantly monitoring various conditions of the engine. The coolant temperature sensor detects changes in water temperature and sends signals to prevent engine damage if it overheats. The crankshaft position sensor measures the rotational speed of the crankshaft, helping to control ignition timing and shifting processes. The oxygen sensor checks the oxygen content in the exhaust, adjusting the air-fuel ratio via the computer to ensure complete fuel combustion, saving fuel and reducing emissions. The intake air pressure sensor measures airflow, working with the fuel injection system to optimize performance. If these little components function properly, the car accelerates smoothly, and dashboard lights won’t flicker randomly. However, if they malfunction, the engine may shake, struggle to start, or experience a sharp increase in fuel consumption. During routine maintenance, I ask the technician to scan their status briefly, ensuring stable connections and avoiding contamination that could affect data accuracy. These features make driving safer and more comfortable, preventing unexpected issues on the road.
