What does the temperature/manifold absolute pressure (TMAP) sensor measure?

The temperature/manifold absolute pressure (TMAP) sensor plays a crucial role in modern engine management systems by measuring both the inlet air temperature and the manifold absolute pressure simultaneously. This dual measurement provides the engine control unit (ECU) with vital information about incoming air density and overall engine operating conditions.

The inlet air temperature measurement is critical because it helps the ECU adjust fuel injections and ignition timing based on the air’s temperature, which affects combustion efficiency. The manifold absolute pressure measurement indicates the engine load and is essential for determining the air/fuel mixture for optimal performance.

Combining these two critical parameters allows the ECU to make more informed decisions regarding fuel management, improving efficiency and performance while reducing emissions. Therefore, the correct choice reflects the multifunctionality of the TMAP sensor and its significance in the ongoing optimization of engine performance.