BMW's latest engine dubbed the N55 is a twin scroll single turbo engine which boasts 306HP and 400Nm of torque out of a 3.0 litre inline 6 cylinder engine. Sound familiar? Yup this is a similar amount of power from the N54 of 335i/135i fame, but now using the new twin-scroll technology BMW can achieve this power from the use of only one turbo.
This is not simply a more efficient engine, but it achieves the similar amount of power with quicker throttle response and max power lower in the rev range (1200rpm).
What is twin-scroll?
Dual side by side exhaust inlets feed into a single housing in this setup. Because there are now two exhaust inlets being fed into the housing the exhaust channel can be smaller given more precise control of the velocity of air flow.
Valvetronic -- finally
Yes valvetronic is back in BMW engines again, due to technical reasons the engineers weren't able to use valvetronic correctly with the N54 but have finally overcome whatever obstacles were in their way and now it returns to the N55 with direct injection.
This engine is making its debut on the 535i GT but as in BMW fashion will likely filter down the range and take its place in the 135i, 335i, 535i, 735i, etc..
This is not simply a more efficient engine, but it achieves the similar amount of power with quicker throttle response and max power lower in the rev range (1200rpm).
What is twin-scroll?
Dual side by side exhaust inlets feed into a single housing in this setup. Because there are now two exhaust inlets being fed into the housing the exhaust channel can be smaller given more precise control of the velocity of air flow.
Valvetronic -- finally
Yes valvetronic is back in BMW engines again, due to technical reasons the engineers weren't able to use valvetronic correctly with the N54 but have finally overcome whatever obstacles were in their way and now it returns to the N55 with direct injection.
This engine is making its debut on the 535i GT but as in BMW fashion will likely filter down the range and take its place in the 135i, 335i, 535i, 735i, etc..
:bow: :bow:
Comment