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GM revamps 2014 Chevrolet Impala with new Ecotec engine

ABR Staff Writer Published 18 September 2012

US car maker General Motors is planning to upgrade its 2014 Chevrolet Impala with an enhanced Ecotec 2.5L four-cylinder engine, which is expected to generate an output of 195hp.

The new engine features an Intake Valve Lift Control (IVLC) technology that will enable variable intake valve lift, duration and timing over a range of engine operation.

In low-lift mode, the technology will help engine pump only the air it needs to meet the driver's demand, while in high-lift mode it offers full output capability of the engine.

GM Global Ecotec engines chief engineer Mike Anderson said Intake Valve Lift Control works in a simple manner that drivers aren't likely to notice it at all.

"What they will notice is a fuel savings of up to one mile per gallon," Anderson said.

By utilising a new rocker arm that switches between low and high lift intake cam profiles, the Ecotec engine will achieve variable valve lift.

In addition, 2014 Chevrolet Impala will also be offered with two other engines including Ecotec 2.4L engine that will generate an output 182hp and the 3.6L V-6 engine will deliver an output of 303hp.

Impala's Ecotec 2.4L engine works with the eAssist system to provide electrical assist in certain conditions to save fuel.

All the three Impala's engines are mated to six-speed automatic transmissions, the company said.