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『Pull out the air flow meter and the car is functioning normally』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1. Can the car be started by unplugging the air flow meter? Damaged air flow meters can affect the engines power performance, such as unstable idle, poor acceleration, "backfire" of the intake pipe, and black smoke from the exhaust pipe. They can also cause excessive emissions, and some car models may have corresponding displays on the instrument panel. Air flow meters, also known as intake flow sensors, are installed on the intake pipe. Currently, there are blade type, optical type, Karman vortex type, ultrasonic type, hot wire type, and hot film type air flow meters available. After calculating the intake of air, it is transmitted to the ECU through electrical signals or disassembly. The ECU adjusts the fuel injection amount based on the signal feedback to achieve the optimal concentration of combustible mixture. The common causes of broken air flow meters are short circuits, open circuits, or abnormal intake signals. The plug of the air flow meter can be unplugged, and if it can be driven, the flow meter is damaged. These three situations can all lead to abnormal fuel injection, causing the mixture to be too rich or too lean, resulting in poor engine operation or a decrease in power. If it is determined that the air flow sensor is damaged, the sensor can be unplugged, the sensor part can be blown with a hair dryer, and then a multimeter can be used to measure whether the signal voltage is normal. In addition, measure the resistance value of the sensor on the non powered side to determine if it is within the normal range. If it is damaged, it is recommended to replace it. 2. Dongfeng Fengxing Lingzhi cant add oil, just unplug the air flow meter.
1. Introduction to Air Flow Meter The function o
2. Installation position: The sensor is installed on the engine intake pipe, at the rear end of the air filter. 3. Working principle: 3.1. Principle of air flow meter: The air flow sensor integrates some electronic components on a ceramic substrate. When the engine is working normally, it first heats the diaphragm, and when fresh air flows through the sensor, it takes away some of the heat. At this time, the ECU will control the Wheatstone bridge on the diaphragm to supplement the heat of the diaphragm, which will cause changes in the electrical signal. When the signal is transmitted to the ECU, The ECU will calculate the intake air volume based on this change. 3.2. The principle of the air temperature sensor. The intake air temperature sensor is a resistor with a negative temperature coefficient. When the intake air temperature changes, the resistance value of the resistor will change, which will cause a change in the signal voltage at the ECU end. The ECU calculates the intake air temperature based on this change. 3.3. Determination of airflow direction: There are two temperature resistors at each end of the hot film of the air flow meter. When the airflow passes through the hot film, it will take away some heat, so the temperature at the front end of the hot film is lower than that at the rear end. The ECU determines the direction of the airflow based on this signal! 4. Circuit diagram of air flow meter. 5. Control strategy: The ECU will constantly monitor the working con