F1 » Renault reveals 2014 engine

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No, the turbo is not geared to the crankshaft it’s the MGU-K (kinetic) which is geared to the front of the crankshaft this MGU is either helping to rotate the crankshaft (acting as a motor) or it is being rotated by the crankshaft (acting as a generator) . When it’s acting as a motor it is triggered by the driver when he calls upon KERS power. When it’s acting as a generator it is triggered by the driver going on the brakes. The MGU-H (heat) geared or not on or to the turbo shaft is either rotating (spooling up) the turbo shaft (acting as a motor) or it is being rotated by the turbo and so acting as a generator either charging the batteries or helping boost the MGU-K power to the crankshaft. Turbo compounding (which does not gear a turbo to the crankshaft) is not permitted.

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