Abstract: the application of compressed air flow meter scale in the car information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
Compressed air flow meter is used to calculate the engine into the gas sensor, in automotive electronic control fuel injection device, the air flow sensor is one of an important part of a decision system control precision.
The air flow signal and the engine speed signal for together.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is the compressed air flow meter scale in details the application of articles in the car.
Compressed air flow meter is used to calculate the engine into the gas sensor, in automotive electronic control fuel injection device, the air flow sensor is one of an important part of a decision system control precision.
The air flow signal and the engine speed signal as reference signal of fuel injection time.
According to the characteristics of different air flow meter sensor, fuel control system according to the volume measurement methods are divided into direct measurement of the volume of L type control and indirect measurement into the type D control volume.
Zui the electronic fuel injection control system of the early adoption is not a microcomputer, but analog circuit, then USES is valve type air flow sensor, but with the microcomputer is used to control the fuel injection, there have been several other air flow sensor.
Air
flowmeter development mainly experienced the following four generations: * generation referred to as 'L, on the throttle shaft set a linkage of slip resistance to measure the throttle opening, and then through the speed signal and the inlet temperature signal is converted to gas input.
At present has been rarely used, usually for old models, some models now used for auxiliary signal.
The second generation referred to as 'type D, raises in the intake manifold vacuum, the vacuum effect on voltage sensors, induction voltage value, in the ECU to calculate the corresponding inlet pressure, and then reference to calculate the air inflow inlet cross-section.
Mainly used in audi V6 model, etc.
The third generation referred to as 'type, the principle of which is ECU by giving different current to maintain constant temperature.
Will take different when different flow of air through the heat, the current changes will be the volume measurement.
Working principle of the fourth generation referred to as 'hot film type, and type basic same, is the advanced type, zui widely used at present.
Air flow meter fault diagnosis and maintenance.
Electronic control fuel injection system of ECU fault storage function, it will all work together of sensors and actuators, and comparing with computer stored within the fixed program, as the error within the prescribed scope as fault storage, maintenance personnel can through the fault reader (
Detector)
Read the specific fault condition.
If the air flow meter or connection circuit malfunction, the engine into volume measurement is not accurate, mixture will be too thick or too thin, the ECU can't accurately control the amount of fuel injection engine, the engine start difficult, unstable idle speed, acceleration, abnormal operation, easy to stall, rise in fuel consumption and emission levels, etc.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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