Air, Boost & Intake

Turbocharger systems compress intake air to increase engine power density. The ECU manages boost via wastegate, VGT or compound configurations.

Map sets that clamp torque when boost cannot reliably follow target.

Boost control regulates turbocharger output via wastegate or VGT. The ECU manages target boost based on torque demand while protecting against overboost.

How charge air temperature influences air density, knock tendency, smoke behavior, and protection strategies in turbocharged engines.

Detailed coverage of MAF, MAP, IAT sensors and volumetric efficiency calculations. How the ECU determines actual airflow.

How boost target maps are built from torque demand and smoke constraints. Understanding the relationship between boost, airflow, and fueling.

Swirl flaps create turbulence in the intake manifold to improve air-fuel mixing at low RPM. ECU controls their position based on operating conditions.

Speed-density vs MAF-based systems: how ECUs estimate airflow and the impacts on fueling calculations and tuning strategy.