©
200416 7-1
XE engine inlet/exhaust system
TECHNICAL DATA
ΧΦ65/75/85 series
4
0
7. XE ENGINE INLET/EXHAUST SYSTEM
7.1 GENERAL
Explanation of K.K.K. turbocharger type
designation
Example of type designation: K31-39 71 Q Y B KB
22.9 1 D C A Y D
K31 Turbine build series
39 diameter of compressor rotor 3.9 inch
71 diameter ratio of compressor rotor d/d
Q Compressor rotor development letter
Y Compressor housing development letter
B Compressor housing variant
K k = compressor housing with recirculation (= ported shroud)
a = compressor housing with no recirculation (= non-ported shroud)
b b = recirculation variant
a = no recirculation
22 surface of turbine housing throat (cm
2
)
9 turbine housing version number
9 = with control bypass
2 = without control bypass
1 Turbine trim figure:
= d/d = 89.5 (trim 80)
= d/d = 87 (trim 76)
= d/d = 84 (trim 70)
= d/d = 79 (trim 62)
D Turbine rotor development letter
C Turbine housing development number
A Turbine housing variant
Y Turbine inlet flange size
y = dimension for a 12.6 litre engine
w = size for a 9.2 litre engine
t = size for a 6.2 litre engine
D Turbine housing material:
b = GG 40
d = Simo
f = Nirisist d2
h = Nirisist d3
k = Nirisist d5
https://www.truck-manuals.net/
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