compression ratio VOLVO S40 2010 Owner´s Manual

11 Specifications
Engine specifications
11
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Engine designationB5244S4B5244S7AB5254T7
OutputB
kW/rps
hp/rpm125/100
168/6000123/100
165/6000169/83
227/5000
TorqueB
Nm/rps
ft. lbs./rpm230/73
170/4400230/73
170/4400320/25-80
236/1500-4800
No. of cylinders555
Displacement (liters/cubic inches)2.44/148.62.44/148.62.52/153.8
Bore (mm/in.)83/3.2783/3.2783/3.27
Stroke (mm/in.)90/3.5490/3.5493.2/3.67
Compression ratio10.3:110.3:19.0:1
Spark plugs
type
gap inches/mm
tightening torque ft. lbs./Nm
Volvo kit no. 30650843
(3x) 0.024 ± 0.004 in./0.6 ± 0.1mm
22.5 ft. lbs./30 NmVolvo kit no. 30650843
(3x) 0.024 ± 0.004 in./0.6 ± 0.1mm
22.5 ft. lbs./30 NmVolvo kit no. 30650379
0.027in./0.7mm
22.5 ft. lbs./30 Nm
ACertain markets.BThe engine specifications for output and torque listed in this table are based on the use of premium fuel.
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 aircooler (which resembles a radiator) is located
between the turbo-compressor and inlet mani-
fold.