Tuesday, September 13, 2011

2013 Lexus GS450h Hybrid | Frankfurt Auto Show

Lexus may have debuted the all-new 2013 GS350 at the Pebble Beach Concours d’Elegance, but waited until the Frankfurt auto show to reveal the new GS450h hybrid variant.

Engineers took Lexus’s corporate 3.5-liter, port- and direct-injected V-6 engine, increased the compression ratio from 10.5:1 to 13.0:1, and adapted it to run on the Atkinson combustion cycle. In an engine running the Atkinson cycle, the intake valves stay open longer to reduce energy losses and convert combustion to engine power more effectively. For extra green points, Lexus is going after a Super-Ultra Low Emissions Vehicle II classification for the GS. The updated engine teams up with an electric motor and a generator, and sends power to the 450h’s rear wheels through a continuously variable transmission.

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