Figure
IV­
1:
Characteristic
NOx
of
In­
Production
Engines
0
20
40
60
80
100
120
0
5
10
15
20
25
30
35
40
45
50
Overall
Engine
Pressure
Ratio
­
OPR
Dp/
Foo
NOx
Characteristic
­
g/
kN
Allison
Engine
BMW
Roll­
Royce
CFM
Int.

General
Electric
Int.
Aero
Engines
KKBM
Pratt
&
Whitney
Rolls­
Royce
Textron
Lycoming
CAEP/
2
Standard
CAEP/
4
Standard
PW
JT8D­
219
E­
kit
PW
JT8D­
217C
E­
kit
PW
4090
PW
4084D
PW
4168A
PW
4168
PW
4077D
PW
4164
Allison
Engine
BMW
Roll­
Royce
CFM
Int.

General
Electric
Int.
Aero
Engines
KKBM
Pratt
&
Whitney
Rolls­
Royce
Textron
Lycoming
