Karl flowmeter| Supplier of ammonia flowmeter manufacturer

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Which flowmeter is more stable?

2. What do you know about the eight major sensors in automobiles?

The eight major sensors in fuel vehicles play a key role in early rolling during engine operation. The following is a specific introduction: The function of the air flow sensor is to detect the engine intake and provide a basis for controlling fuel injection.. Types: divided into mass type air flow meters (hot wire type) and volume type air flow meters (blade type and optical Kalman vortex type). Yuan Minlangs theory: Taking the hot wire type as an example, the hot wire is incorporated into a bridge circuit. When the hot wire is cooled by the air sucked in, the resistance value decreases, causing a potential difference between points A and B. The operational amplifier detects the potential difference and applies voltage to the circuit, increasing the hot wire current, causing the hot wire temperature to rise and the resistance value to increase until the potential at points A and B is equal. Measure the intake volume by detecting the voltage at point B. Image: Intake Pressure Sensor Function: Detect the vacuum degree of the intake manifold and determine the intake volume. Principle: Using the IC inside the sensor, the intake pressure of the manifold is sensed as a PIM signal, and the engine ECU determines the basic injection time based on this PIM signal. Image: Throttle Position Sensor Function: Detect the throttle opening and control the fuel injection amount during acceleration. Structure: The linear throttle position sensor consists of two sliders and a resistor, with contacts for IDL and VTA signals at both ends. Image: Camshaft Position Sensor Function: Detect the position of the camshaft, dete

rmine the top dead center of the compression stroke of cylinder one, control the sequence of fuel injection and ignition. Principle: When the cam rotates, the air gap between the convex tongue on the camshaft and the sensor changes, generating a voltage in the induction coil inside the sensor, forming a G signal, which is sent to the engine ECU as standard crankshaft angle information (cylinder position discrimination). Image: Function of crankshaft position sensor: detects crankshaft position and engine speed, controls fuel injection and ignition. Principle: The camshaft position sensor or crankshaft position sensor comprehensively detects the crankshaft angle and engine speed. The NE signal is used by the engine ECU to detect the crankshaft angle and engine speed. The engine ECU uses the NE signal and G signal to calculate the basic injection time and basic ignition advance angle. Function of oxygen sensor: Used in the engine electronic fuel injection system to detect the oxygen content in the engine exhaust gas to obtain the air-fuel ratio information of the mixture, achieve air-fuel ratio feedback control, detect the oxygen content in the exhaust gas to determine the rich or lean of the mixture, and correct the air-fuel ratio. Principle: The oxygen sensor contains an element made of ceramic material zirconia (ZrO2), which is coated with a thin layer of platinum on both the inner and outer sides. The ambient atmosphere is directed towards the inside of the sensor, while the outside is directly exposed to the exhaust. When at high temperature (400 ℃), if the oxygen concentration on the inner surface of the zirconium element differs too much from the oxygen concentration on the outer surface, the zirconium element will

Karl flowmeter

Which flowmeter is more stable?

2. What do you know about the eight major sensors in automobiles?

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