The 2012 Buick LaCrosse is scheduled to arrive in dealerships this summer and will please its future customers with the new, more powerful and fuel-efficient version of its direct-injected 3.6L V-6 engine. Boasting no loss in fuel efficiency, the engine features an incresed power by 23 HP, resulting in an output of 303 HP and 358 Nm of torque. Tom Sutter, global V-6 chief engineer, stated that the changes they had made to the 3.6-liter V6 represented greater refinements to an already well-balanced package as they had used the latest designs as well as lighter-weight components in order to improve the engine's performance, efficiency and durability. The engine's boost in horpsepower was provided by longer-duration intake camshafts and larger-diameter intake valves in the heads.
Larger valves allow more air to be pulled into the combustion chamber, obtaining more powerful combustion withtout any sacrifice on the fuel economy.
The engine uses a new fuel pump, which is quieter and the isolated fuel rail reduces fuel system noise, thus helping maintain LaCrosse's quiet-tuned operation.
The lighter-weight components are the new integrated cylinder head/exhaust manifold design, the new composite intake manifold and the light-weight structural front cover and lightweight, which all save around 39 pounds. This engine appears to be an attractive option of one he most attractive luxury sedans on the road today.
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