BMW 5 Series: Crankcase monitoring
On-board diagnosis

Feed-in point of the blow-by gases to the clean air line upstream from the
exhaust turbocharger
- Non-return valve
- Connection to exhaust turbocharger
- Captive screws
- Crankcase bleeding connection
- Tank ventilation connection
- Connection to clean air line
- Aluminum heating pipe
- Electrical connection of heating element
Owing to the stricter legislation in the USA, the engines for the US market
have an OBD concept
"pressure sensor". With a differential pressure sensor in the tank ventilation
system and the hot film
air mass meter, leaks in the crankcase ventilation, tank ventilation, as well as
the blow-by lines can be
identified. Via a feed-in point at the exhaust turbocharger the blow-by gases
are fed back into the clean
air line of the air intake system.
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Fuel preparation
The fuel preparation has been modified to meet the requirements of emission
legislation. The high
pressure pump and the injectors have been revised and designed for a fuel
injection
Mounting the injectors
Mounting bolts
Plastic sleeve
Holding clamp with bayonet fitting
Rail
Solenoid valve injector
Cast lug
The solenoid valve injectors are fastened to the holding clamp w
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Engine highlights N63B44O2
List of the most important special features:
1. Map-controlled oil pump.
2. Engine temperature management Split-Cooling-Combined (SCC).
3. Engine oil/coolant heat exchanger integrated in the v-space.
4. New coolant-cooled 8th generation Digita
DME 8 control unit
The 8th generation engine electronics form a common control unit platform for
gasoline and diesel
engines that have been used since modular engines were introduced. Its
appearance is characterized
by a uniform housing and a uniform connector strip. The hardware inside has been