Volvo XC90 - Manual (Page 286)

11 Specifications
Engine specifications
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Engine designation B6324S B8444S
Output
kW/rps 175/103 232/100
hp/rpm 235/6200 311/6000
Torque
Nm/rps 320/53 440/65
ft. lbs./rpm 235/3200 170/4400
No. of cylinders 6 8
Bore (mm/in.) 3.3/84 3.7/94
Stroke (mm/in.) 3.77/96 3.13/79.5
Cylinder displacement, liters 3.19 (194.7 cu in) 4.41 (268.6 cu. in.)
Compression ratio 10.8:1 10.4:1
Charge air cooler (Intercooler)
Turbocharged engines employ a turbo-com-
pressor to force air into the engine inlet mani-
fold and a charge air cooler to cool the com-
pressed inlet air. The resulting increase in air
flow raises pressure in the intake manifold and
increases engine power over that developed by
the normally-aspirated engine. The charge air
cooler (which resembles a radiator) is located
between the turbo-compressor and inlet mani-
fold.
Fuel system
The engine is equipped with a multiport fuel
injection system.