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Saturday, June 22, 2013

Renault unveils 2014 Hybrid V6 Turbo Formula 1 engine

Renault Sport boss Jean-Michel Jalinier says one of the biggest challenges facing F1 engine suppliers next season is better fuel economy while maintaining power output.

Renault's 2014 V6 turbocharged F1 engine, dubbed the Energy F1-2014, went on display at the Paris airshow on Friday.

Already two teams have signed up to use it, Red Bull and Toro Rosso, while Renault expected to secure Lotus and Caterham in the near future.

In 2014 Formula 1 will enter a new era. Engine regulations form the major part of the coming revolution, with the introduction of a new generation of engines, called "Power Units" that combine a 1.6 litre V6 turbocharged engine with energy recovery systems that will dramatically increase efficiency by harvesting energy dissipated as heat in the exhaust (mgu-h) or brakes (mgu-k).

The maximum power of the new V6 Power Unit will exceed the output of current V8 F1 engines however fuel efficiency will be radically improved, Renault says. With only 100kg permitted for the race, the new units will use 35% less fuel than their predecessors.

"From next year, one of greatest challenges in F1 will be to maximize energy efficiency and fuel economy while maintaining the power output and performance expected of F1 cars," said Jean-Michel Jalinier, President of Renault Sport F1 during the press conference.

"Renault has pioneered this technology in its road car engine range with the Energy series. Naming the Power Unit Energy F1 creates an unbroken range, from the Clio through to our competition department."

Source: Renault (pdf)

2013 and 2014 Renault F1 engines compared

RS27 (2013)Energy F1 (2014)
Displacement2.4 litres1.6 litres
Rev limit18,000rpm15,000rpm
Pressure chargingNormally aspirated, pressure charging is forbiddenSingle turbocharger, unlimited boost pressure (typical maximum 3.5 bar abs due to fuel flow limit)
Fuel flow limitUnlimited, but typically 170kg/h100kg/h (-40%)
Permitted Fuel quantity per raceUnlimited, but typically 160kg100kg (-35%)
Configuration90° V890° V6
Number of cylinders86
BoreMax 98mm80mm
StrokeNot regulated53mm
Crank heightMin 58mm90mm
Number of valves4 per cylinder: 324 per cylinder: 24
ExhaustsTwin exhaust outlets, one per bank of cylindersSingle exhaust outlet, from turbine on car centre line
FuelIndirect fuel injectionDirect fuel injection
Number of power units permitted per driver per year85
Energy recovery systems
MGU-K rpmUnlimited (38,000 rpm)Max 50,000 rpm
MGU-K powerMax 60kWMax 120kW
Energy recovered by MGU-KMax 0.4 MJ/lapMax 2MJ/lap
Energy released by MGU-KMax 0.4MJ/lapMax 4MJ/lap
MGU-H rpm->100,000rpm
Energy recovered by MGU-H-Unlimited (> 2MJ/lap)

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