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Mercedes reacts to 2014 breakdown: More cooling for the computer

Mercedes reacts to 2014 breakdown
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D he Grands Prix in Canada and Austria are a brake killer. In Montreal, the drivers step into their irons seven times. 147 kilowatt hours of energy are destroyed over a race distance. At the Red Bull-Ring there are 143 kilowatt hours with seven braking maneuvers. The drivers put on the brakes for 17 percent of the lap time.

By way of comparison: on the 66 laps in Barcelona, ​​for example, only 114 kilowatt hours of energy dissipate when braking. It accelerates just as often. That is why the electric drive also suffers. The constant change between full throttle and full braking, charging and discharging puts a strain on the battery and the control units. The system works without a break.

Dents in the Mercedes trim

The MGU-K is charging the battery not only when braking, but also when accelerating. When the driver hits the gas, there is an abundance of torque. Instead of injecting less gasoline to reduce the torque, more fuel is burned.

The MGU-K is switched to generator mode and works against the engine. That's energy for the battery. On the straights, the juice is then withdrawn from the energy store. This saves more gasoline than you previously injected. The bottom line is that this is more efficient.

The power electronics control the processes. In Montreal and at the Red Bull-Ring, it gets hotter than on other tracks. That cost Mercedes victory last year. Because the control unit overheated, the electric drive logged off.

There was no quick and bulletproof solution for the subsequent race in Austria. Therefore Nico Rosberg and Lewis Hamilton drove with braked foam. What brought the Williams within striking distance.

This year Mercedes has taken precautions. An additional cooling element was installed in the rear to keep the power electronics in the green area. Easily recognizable by a dent in the engine cover. The aerodynamic disadvantage is minimal. Instead, a possible source of defects has been eliminated. The reward: Mercedes was significantly better than 2014 on the two power routes.


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