Additional exhaust-gas recirculation cooler: Function
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 additional exhaust-gas recirculation cooler is arranged above the exhaust manifold and directly screwed to the exhaust manifold. The additional exhaust-gas recirculation cooler is connected to the cooling circuit.
The exhaust gas travels directly from the exhaust manifold to the additional exhaust-gas recirculation cooler. The outlet of the supplementary EGR cooler is connected by a pipe to the inlet of the EGR valve. The exhaust passes as normal into the normal EGR cooler via the EGR valve.