Diesel engine fuel supply systems
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 740i, 2015 BMW 740Li, and 2014 BMW Alpina B7L. However, it is still accessible from the selected car via links, so may be relevant.
Fuel system
The fuel is delivered from the fuel tank by the fuel pump via the feed line to the high pressure pump. The fuel pump delivers more fuel than the engine requires. A return line is required.
Tank-venting system
Diesel fuel is slow-evaporating, therefore no carbon canister is required. The fuel tank is bled directly into the atmosphere.