F1 Technical Insight

Tech F1i - Ferrari and Mercedes unleash the power

MAGIC POTION?

At Spa, Sebastian Vettel's SF71H was equipped with a new internal combustion engine, a new turbo and a new MGU-H. The German driver had therefore reached the allocated quota for the whole season: any subsequent replacement will result in a penalty.

Kimi Räikkönen, for his part, received only a new internal combustion engine, to avoid a demotion on the grid. Drivers from the Maranello's customer teams had access to the spec-3 engine at Hungarian Grand Prix, and are now in the same situation as Vettel (see the table below).

Driver Team
ICE TC MHU-H MGU-K ES CE
L. Hamilton Mercedes (Mercedes) 3 3 3 2 2 2
V. Bottas Mercedes (Mercedes) 4 4 4 3 3 3
D. Ricciardo Red Bull (Renault) 3 3 3 3 3 3
M. Verstappen Red Bull (Renault) 3 3 3 3 2 2
S. Vettel Ferrari (Ferrari) 3 3 3 2 2 2
K. Räikkönen Ferrari (Ferrari) 3 3 3 2 2 2
S. Pérez Force India (Mercedes) 3 3 3 2 2 2
E. Ocon Force India (Mercedes) 3 3 3 2 2 2
L. Stroll Williams (Mercedes) 3 3 3 2 2 2
S. Sirotkin Williams (Mercedes) 3 3 3 2 2 2
F. Alonso McLaren (Renault) 3 3 3 3 2 2
S. Vandoorne McLaren (Renault) 4 4 4 3 3 3
B. Hartley STR (Honda) 6 5 5 5 3 3
P. Gasly STR (Honda) 5 5 5 4 3 3
R. Grosjean Haas (Ferrari) 3 3 3 2 2 2
K. Magnussen Haas (Ferrari) 3 3 3 2 2 2
N. Hülkenberg Renault (Renault) 4 5 4 3 3 3
C. Sainz Renault (Renault) 4 4 4 3 3 3
M. Ericsson Sauber (Ferrari) 3 3 3 2 2 2
Ch. Leclerc Sauber (Ferrari) 3 3 3 2 2 2

Simultaneously, Shell introduced a new formulation of its fuel, the last of the season after a first evolution appeared in Canada. This mixture pushes the knocking limit, i.e. the risk of uncontrolled fuel explosions, while maintaining the calorific value of fuel. Knocking disturbs the combustion process, which affects performance, and can also damage the inside of the piston (read here our complete file on the techniques of ignition in prechamber of combustion). According to Autosport, this new formula, which is said to be expensive and complex to produce, is currently limited to the factory team.

According to the oil company, the development of fuel and lubricants represents over 20% of the Italian engine's power increase since 2014.

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Nicolas Carpentiers

Nicolas Carpentiers is F1i.com's resident technical expert, providing in-depth technical analysis and casting his critical eye across the developments of the teams throughout the season.

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