Additional exhaust-gas recirculation cooler: Notes
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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
| 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 |
| 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.