MANIFOLD AIR-PRESSURE AND TEMPERATURE SENSOR
The manifold air-pressure sensor with temperature sensor measures the pressure and air temperature in the intake manifold. The volume of air that reaches the engine cylinder can be calculated from the measured air pressure and the engine speed. This input variable is used to calculate the amount of fuel that needs to be injected.
The micromechanical sensor contains a piezo-resistive sensor element, which generates a measurable electrical voltage when pressure is applied. This voltage is then used in measuring the air pressure. The temperature sensor measures the intake air temperature, allowing the engine management system to adjust the amount of injected fuel.