Function and difference between intake pressure sensor and throttle position sensor

Intake pressure sensor: detects the pressure change of intake pipe and sends the signal to ECU.

Throttle position sensor: detects the change of throttle opening and sends the signal to ECU.

One is to detect the intake pressure, and the other is to detect the throttle opening. This is the difference between them.

ManifoldAbsolutePressureSensor (map) It connects the intake manifold with a vacuum tube. Under different engine speed loads, it senses the change of vacuum degree in the intake manifold, and then converts it from the change of internal resistance of the sensor to a voltage signal for ECM computer to correct the fuel injection quantity and ignition timing angle.

Throttle is a controllable valve, which is used to control air to enter the engine. After entering the intake pipe, it is mixed with gasoline (different models of cars have different design mixing parts) to become combustible mixture, which participates in combustion and does work. Four-stroke gasoline engines are generally like this. Throttle is the most important component in EFI automobile engine system. Its upper part is the air filter, and the lower part is the engine block, which is the throat of the automobile engine. Whether the acceleration of a car is flexible is closely related to the cleanliness of the throttle. Whether the throttle should be removed for cleaning is also the focus of discussion among car owners.