Function of the Air Flow Sensor?
1 Answers
The air flow meter, also known as the air flow sensor, is a sensor that measures the amount of air drawn into the engine and is one of the key sensors in an electronic fuel injection engine. The air flow meter is installed between the air filter and the intake hose, primarily used to collect information about the engine's air intake. Its function is to detect the air intake volume of the engine cylinders and adjust the fuel supply accordingly. Below is an expanded explanation: 1. The air flow meter converts the information about the air flow into electrical signals, which serve as the basic signal for fuel injection. These signals are transmitted to the engine's electronic control unit (ECU) for processing, used to calculate all functions related to engine speed and load, such as injection timing and ignition timing. If the air flow sensor or its circuit malfunctions, the ECU cannot receive the correct air intake signal, leading to improper control of fuel injection. This can result in a mixture that is either too rich or too lean, causing abnormal engine operation. 2. There are various types of air flow meters. Common air flow sensors can be categorized by their structural types into vane type, core type, hot-wire type, hot-film type, and Karman vortex type, among others. As for the price of air flow meters, most cost around two hundred yuan, but the specific price depends on the product brand, structure, and vehicle model. Generally, high-end vehicle models use more expensive air flow meters, with prices ranging from several hundred to over a thousand yuan.
