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N55 Engine
Cylinder Head
Direct fuel injection, turbocharging and Valvetronic systems are combined for the first time
on a BMW 6-cylinder engine. The cylinder head of the N55 engine is a new develop-
ment. It features a very compact design and is equipped with third generation Valvetronic.
The combination is referred to as Turbo-Valvetronic-Direct-Injection (TVDI).
This system reduces CO2 emission and fuel consumption by 3 - 6%.
There are now no connections for the VANOS non-return valves as they have been
integrated in the solenoid valves. The cylinder head also features cooling passages
near the fuel injectors; providing indirect cooling.
N55, cylinder head
Summary of Contents for N55
Page 29: ...29 N55 Engine N55 oil passages front view...
Page 35: ...35 N55 Engine N55 crankcase ventilation naturally aspirated mode...
Page 37: ...N55 crankcase ventilation turbocharged boost mode 37 N55 Engine...
Page 57: ...N55 Air Intake and Exhaust System 57 N55 Engine...
Page 83: ...83 N55 Engine Circuit Diagram N55 circuit diagram connection to vehicle electrical system...
Page 85: ...85 N55 Engine Engine Cooling Circuit Diagram N55 circuit diagram engine cooling...
Page 88: ...88 N55 Engine Digital Motor Electronics Circuit Diagram N55 MEVD17 2 Circuit Diagram...