siskue2005 wrote: ↑
Thu Aug 09, 2018 4:46 pm
really lap after lap? how is that even possible? could u care to explain?
saviour stivala wrote: ↑
Thu Aug 02, 2018 1:10 pm
LM10 wrote: ↑
Wed Aug 01, 2018 6:56 pm
You could hear that sound pretty well in pre-season testing too and there they surely weren’t in qualifying mode.
The original technical term was “free load mode” with engine at full fueling the compressor is in electric supercharging mode, with waste gates open and exhaust gases bypassing the turbine, with both K and H sharing battery power. This maximum power possible mode was part of the hybrid design. It was mostly used in qualifying by those whose reliability permitted, where fuel consumption and a discharged battery after one lap did not matter. And also very strictly limited and with pit wall permission during the race. The noticeable change in engine sound is due to the fact that when free load mode is used exhaust gases change exiting from turbine scroll tailpipe to waste gates tailpipes. FERRARI seems to have found the necessary requisites namely, reliability, fuel consumption and harvesting capabilities to be able to use this mode at certain strategic points during the lap, for lap after lap.
All this is reinforced by the fact that while both Mercedes and FERRARI are using this mode during qualifying the differences are minimal, but during the race when Mercedes do hardly use this mode the differences are bigger.
Moreover race pace for Merc and Ferrari seems to be even ( i am saying this from the laptimes we have seen during the race)
It really is, in short bursts. It seems ferrari's energy recovery has gotten to a level so good this is actually possible.
That said, most of the cars are doing this on some parts of the lap during the race, it's just that ferrari's for whatever reason seems the loudest and thus most noticeable.
Ever since FOM started to put microphones in the exhaust (or near it, doesn't matter) tone shift when free load mode is activated is like night and day. Check below:
free load active, listen carefully
free load inactive some laps later - no shift in tone
Here's a nice example of how verstappen uses all power (free load included) on his run to copse in order to stay ahead of raikkonen. Keep an eye on his left hand holding down the overtake paddle behind the steering wheel