Exhaust turbocharger with wastegate valve
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
The engine is equipped with an exhaust turbocharger. As the dynamics in the exhaust manifold increase at low engine speeds, the energy in the exhaust gases is utilized more effectively. This means the maximum torque is reached at engine speeds as low as 1200 rpm. The charging pressure is regulated by the Digital Motor Electronics (DME) via a wastegate valve. The wastegate valve is adjusted pneumatically by a diaphragm box. A pressure converter applies a partial vacuum to the diaphragm box. The exhaust turbocharger has 4 connections for cooling and lubricating the exhaust turbocharger:
- 2 connections for engine cooling circuit
- 2 connections for the oil circuit.