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Introduction to BMW
Engine Numbering System
In order to organize and classify the engines developed by BMW, a numbering system
has been developed.
Digit 1 is the engine developer and/or generation:
A = Motorcycle
M = BMW Group (Old Generation)
N = BMW Group (New Generation)
G H K L T = BMW Group (Future Generation)
P = BMW Motorsport
S = BMW M GmbH
Digit 2 is the engine type:
Combustion Engines Electric Motors
4 = in-line 4 A = Asynchronous
5 = in-line 6 P = Permanent Magnet
6 = V8 R = Switched Reluctance
7 = V12 S = Synchronous
8 = V10 T = Transversal flow
Digit 3 is the engine technology:
Digit 4 is working procedure and/or fuel:
B = Gasoline
D = Diesel
E = Electric
G = Natural Gas
H = Hydrogen
M = Methanol
X = Electronic - Diesel
Y = Electronic - Gasoline
Digits 5&6 are the displacement value:
Digit 7 is the performance class
S = Super performance
T = Top performance class
O = Upper performance class (standard)
M = Intermediate performance class
U = Lower one performance class
K = Smallest one performance class
Digit 8 is release relevant information:
0 = New Development
1-9 = Revision (such as technical update or cost project)
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