MAP sensor definition: intake air pressure sensor. Intake air pressure sensor, referred to as MAP.
It is connected to the intake manifold with a vacuum tube. With different engine speed loads, it senses the vacuum change in the intake manifold, and then converts the change in the internal resistance of the sensor into a voltage signal for the ECM computer to correct the fuel injection volume and ignition timing. Time angle. In other words, the ECM computer outputs a 5V voltage to the intake pressure sensor, and then detects the voltage value from the signal terminal. When the engine is idling, the voltage signal is about 1-1.5V, and when the throttle is fully opened, it will be about 4.5V voltage signal.
The role of the MAP sensor: 1. Adjust the camshaft to control the opening angle and timing of the intake throttle, that is, the VVT system (variable throttle system). 2. Adjust the fuel injection timing and control the wavelength of the intake harmonics to make the intake smoother.
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Jiaxing Lineng Automobile Gas Equipment Co., Ltd. is one of the suppliers of MAP sensors. Its products are of favorable price and good quality, which is worth trying.