Audi The 2.7-litre V6 Biturbo Design and Function

Short Description
Turbocharged engines are already something of a tradition at AUDI. The task now facing AUDI’s engineers was to develop a worthy successor to the 5-cylinder turbocharged engine. One of the key development goals for the turbocharged engine was to achieve a good level of dynamic response, particularly at the bottom end of the rev band.
The goal of AUDI’s engineers was to realise a high “basic torque level“ and a torque characteristic that rises in direct proportion to engine speed to its peak.

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Content
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The crankshaft
The crankshaft is identical to that used in the 2.8-litre V6 engine.
The crankshaft bearing caps are attached to the central crankcase by 4 bolts.
• The 4-bolt connection reduces the load on the bearing caps considerably. The middle two crankshaft bearing caps are also bolted to the side of the crankcase.
• The lateral bolted connection helps to improve acoustics. The pistons are forged to enable them to withstand the high loads to which they are subjected.
Due to the high combustion pressures, a 2-material bearing shell is installed on the connecting rod side. The bearing cap has a 3-material bearing shell.
Advantage:
The bearing shell has a high load-bearing capacity
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