stfn_ger wrote:Tommy Cookers wrote:regarding KERS, in 2014 energy recovered as electricity must be arranged to power the car continuously with use of the engine
that is electrical power and power from combustion of fuel are simultaneously controlled proportionate to the drivers use of the accelerator pedal (so there will not be short bursts of electrical power, and the term KERS will no longer be used)
Few days back when autosport released the article about
Mercedes presenting their 2014 engine they wrote:
The current KERS currently produces 80hp for 6.7 seconds per lap, while the new ERS will deliver 161 hp for 33.3 seconds per lap.
If the MGU-K is is going to support the engine continuously, where do these 33.3 seconds / lap come from?
161 hp is the maximum permitted electric motor power output (120 kW)
this is the MGU-K operating as a motor, this is the only electric motor that can power the car's wheels
the energy recovered from storage and delivered by this motor is limited to 4000 kJ per lap
(this recovered energy can be from braking ie the MGUK and from the exhaust turbine, the MGUH)
so if this motor was run at the 161 hp limit the 4000kJ would be delivered in 33.3 sec
but the motor power can only be used in proportion to engine power (torque really)
and stored energy will be frequently needed to drive the turbo up to speed by the MGUH acting as a motor
so the delivery of 4000 kJ of recovered energy would be dispersed over the lap, not concentrated eg 33.3 sec at full power
but this motor will be fed both recovered electricity from storage and (exhaust energy) electricity supplied 'directly' from the MGUH
there is no rule limiting the amount of such 'direct' electrical power
as long as all electrical power delivery is proportionate, ie integrated with the ICE power, and within the 161 hp limit