"We will have our new specification of power unit available
to use in Austin," said Renault's director of operations Remi
Taffin in a preview for Sunday's race.
"The principal changes involve the internals of the ICE
(internal combustion engine) to give improved power and
efficiency.
"We know that introducing the new PU (power unit) will incur a
grid penalty (for exceeding the season's allocation) so the
decision to use will be made in full consultation with the
teams."
With four races remaining, and Mercedes already crowned
champions, both Renault-powered teams still have points and
championship position to fight for.
Red Bull are fourth and 71 points behind third-placed Williams
and 57 ahead of Force India.
Toro Rosso are seventh and only 21 points behind Lotus, who will
become the Renault works team next year if a takeover goes
through.
Sauber, celebrating their 400th race this weekend, are 11 points
behind Toro Rosso.
(Reporting by Alan Baldwin, editing by Peter Rutherford)
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