ALUSIL ® -Cylinder Blocks Porsche V6/V8 - KSPG AG

1. Audi setting standards in lightweight design
With its vehicle model series, Audi is setting new standards
in lightweight design. So it is only logical for the carmaker
again to count on aluminium in developing the cylinder
blocks for its actual gasoline V-engines (Fig. 1). On account
of the reduced wall thickness (cylinder land width of only
5.5 mm (Fig. 2) between cylinder bores), Audi relies on the
hypereutectic aluminium-silicon alloy AlSi17Cu4Mg registered
for KS Aluminium-Technologie under the brand name
of ALUSIL ® . This concept allows the pistons to move directly
V6 cylinder block
V8 cylinder block
(multi-point injection)
Fig. 1: ALUSIL ® cylinder block of the Audi V6, V8 and V10 gasoline engine generation
along the honed cylinder bore surfaces of the aluminium
casting – an ideal condition for compact high-performing
engines.
2. Reasons in favor of ALUSIL ® from the viewpoint
of Audi:
There are many technical reasons which induced the carmaker
Audi to adhere to the proven ALUSIL ® concept:
V8 cylinder block
(fuel stratified injection [FSI])
V10 cylinder block
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