Additional exhaust-gas recirculation cooler: Notes

So that the exhaust gas can be further cooled for exhaust-gas recirculation, several variants have an additional exhaust-gas recirculation cooler installed.

Series use: To 07/2013 in F10 with N57D30O1 US version

Fig 1: Identifying EGR Cooler, Valve And Coolant Connection

Courtesy of BMW OF NORTH AMERICA, INC.

1	Connection for coolant
2	Connection for coolant
3	Connection for exhaust temperature sensor downstream of auxiliary exhaust-gas recirculation cooler
4	Connection on EGR valve
5	EGR valve
6	EGR cooler
7	Lever for supplementary EGR cooler bypass flap
8	Additional exhaust-gas recirculation cooler

Fig 2: Identifying EGR Cooler Bypass Flap, Coolant Connection And EGR Cooler

Courtesy of BMW OF NORTH AMERICA, INC.

1	Connection for exhaust temperature sensor downstream of supplementary EGR cooler
2	Lever for supplementary EGR cooler bypass flap
3	Connection for coolant
4	Connection for coolant
5	Additional exhaust-gas recirculation cooler
6	Supplementary EGR cooler connection on exhaust manifold

Function

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.