Renault reveals 2014 F1 engine

2014 F1 season

Renault 2014 F1 engine launchRenault have revealed the engine which their teams will use during the 2014 F1 season.

The 2014 season will see teams ditch the existing 2.4-litre V8 normally-aspirated engines for new 1.6-litre V6s with sophisticated energy recovery technologies.

President of Renault Sport F1 Jean-Michel Jalinier introduced the new power unit, named Energy F1: “From next year, one of greatest challenges in F1 will be to maximise energy efficiency and fuel economy while maintaining the power output and performance expected of F1 cars.”

“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.”

Renault engines have powered the world championship-winners for the last three seasons. They will continue to supply reigning champions Red Bull next year as well as Toro Rosso.

The complete engine unit for 2014 will be heavier than the current design, as director of programmes and customer support Axel Plasse explained:

“The current V8 is 95kg, 100kg if you add the weight of the MGU. This increases to 120kg when you include the ancillary parts, such as the radiators and other cooling devices. With the 2014 power unit, the V6 turbocharged engine will be a minimum of 145kg, plus 35kg for the battery. At 180kg, this is a 80% increase over the current units, plus a further 20kg for the ancillaries such as the intercooler and other radiators.

In response to speculation over how the new engines will sound, Renault have released an audio clip of theirs being revved. Deputy managing director (technical) said the engine will retain an appealling sound: “The sound of the engine is the sum of three principal components, exhaust, intake and mechanical noise. On fired engines, exhaust noise dominates, but the other two sources are not trivial and would be loud if the exhaust noise was suppressed and contribute to the perceived sound of the engines in the car.

Renault Energy F1, 2014 F1 engine“All three sources are still present on the V6. At the outset, there is more energy in each combustion event but there are fewer cylinders turning at lower speed and both intake and exhaust noise are attenuated by the turbo. Overall, the sound pressure level (so the perceived volume) is lower and the nature of the sound reflects the new architecture.

“The car will still accelerate and decelerate rapidly, with instant gearshifts. The engines remain high revving, ultra high output competition engines. Fundamentally the engine noise will still be loud. It will wake you from sleep, and circuit neighbours will still complain. The engine noise is just a turbocharged noise rather than a normally aspirated noise: you can just hear the turbo when the driver lifts off the throttle and the engine speed drops.

“I am sure some people will be nostalgic for the sound of engines from previous eras, including the preceding V8, but the sound of the new generation power units is just different. It?s like asking whether you like Motorhead or AC/DC. Ultimately it is a matter of personal taste. Both in concert are still pretty loud.”

2013 and 2014 Renault F1 engines compared

RS27 (2013) Energy F1 (2014)
Displacement 2.4 litres 1.6 litres
Rev limit 18,000rpm 15,000rpm
Pressure charging Normally aspirated, pressure charging is forbidden Single turbocharger, unlimited boost pressure (typical maximum 3.5 bar abs due to fuel flow limit)
Fuel flow limit Unlimited, but typically 170kg/h 100kg/h (-40%)
Permitted Fuel quantity per race Unlimited, but typically 160kg 100kg (-35%)
Configuration 90??? V8 90??? V6
Number of cylinders 8 6
Bore Max 98mm 80mm
Stroke Not regulated 53mm
Crank height Min 58mm 90mm
Number of valves 4 per cylinder: 32 4 per cylinder: 24
Exhausts Twin exhaust outlets, one per bank of cylinders Single exhaust outlet, from turbine on car centre line
Fuel Indirect fuel injection Direct fuel injection
Number of power units permitted per driver per year 8 5
Energy recovery systems
MGU-K rpm Unlimited (38,000 rpm) Max 50,000 rpm
MGU-K power Max 60kW Max 120kW
Energy recovered by MGU-K Max 0.4 MJ/lap Max 2MJ/lap
Energy released by MGU-K Max 0.4MJ/lap Max 4MJ/lap
MGU-H rpm >100,000rpm
Energy recovered by MGU-H Unlimited (> 2MJ/lap)

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94 comments on Renault reveals 2014 F1 engine

  1. Nick (@npf1) said on 22nd June 2013, 0:40

    While I’ve trained myself to be able to hear multiple layers in music, the video’s audio seems too chaotic for me to really get a good idea what the engine sounds like.

    If anything, the teams could stop by eBay and get some ‘sports’ exhausts to spice up their sound.

  2. esine said on 22nd June 2013, 3:55

    While the move to the v6 turbo spec will be exciting from a technical standpoint, if anyone believes that the new engines are going to sound remotely as good as the engines from the 90s/early 2000s, then they are fooling themselves.

    For example, have a look at this video, and in particular pay close attention at 0:45:

  3. karter22 (@karter22) said on 22nd June 2013, 5:59

    after hearing it, it´s ok I guess. I would just like it if it had more revs, I don´t mind the tone but, the lack of revs is sort of anti-climatic

  4. MemorableC (@memorablec) said on 22nd June 2013, 7:54

    Many people commenting on the engine sounding flat are forgetting that the engine is probably stationay and you are not getting any Doppler effect, i have a feeling that will make them come alive

    • karter22 (@karter22) said on 22nd June 2013, 11:47

      you might be right but even a v8 or v10 on a bench is quite close to what is heard at a track! I just feel that if it reved a bit more it would sound awesome. I like the sound it´s just the peak note that it produces which I personally do not like.

  5. Martin (@andone89) said on 22nd June 2013, 11:50

    Why this engine has only 1 radiator bolted on?
    And how many cc’ is it?

  6. David said on 2nd March 2014, 23:20

    Does anyone know what the compression ratio is? Or an educated guess. Also the boost of the turbo.

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