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Thread: Rally1 hybrid cars (2022-)
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13th January 2022, 17:58 #491
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The regen of course slows down the car, it can not work other way according to the laws of physics (you take away the kinetic energy of the car and transform it into electricity). It helps to the brakes because you don't need that much braking power from the brakes alone (and therefore you also don't heat them that much).
When you drive an EV you don't need brakes at all for common gentle braking.Stupid is as stupid does. Forrest Gump
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13th January 2022, 18:03 #492
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13th January 2022, 18:05 #493
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Last edited by Mirek; 13th January 2022 at 18:11.
Stupid is as stupid does. Forrest Gump
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13th January 2022, 18:07 #494
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Last edited by Mirek; 13th January 2022 at 18:11.
Stupid is as stupid does. Forrest Gump
- Likes: AnttiL (13th January 2022),cali (13th January 2022),pantealex (17th January 2022),the sniper (13th January 2022)
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13th January 2022, 18:38 #495
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Thinking reliability, especially in the beginning of the season.
If the hybrid pack stops working, can drivers continue at topspeed from the ICE without any damage?
Any other bits and pieces that are new, that represent reliability risk?
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13th January 2022, 22:25 #496
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- Likes: cali (14th January 2022)
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14th January 2022, 10:09 #497
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Wrcwings says:
f) the recuperation by braking is limited to 30kW, no matter how hard a driver brakes,
https://www.wrcwings.tech/2021/09/14...-implications/
- Likes: Mirek (14th January 2022),Tanelv (14th January 2022)
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14th January 2022, 10:16 #498
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14th January 2022, 12:31 #499
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I'm glad you ask actually because you are making me think about this. Here's my understanding and if I get it wrong hopefully a pro engineer will correct us.
My understanding is the power is maximum 100kw, so in purely electric motor mode the throttle pedal may relate 0-100% of 100kw. But when combined with the ICE engine, which has it's own torque curve through revs, you might not necessarily want that linear throttle pedal to electric motor relationship. Then there is surface traction and driving style to think about.
The teams have three torque demand maps to set before the season starts, but can change these once this season. The ICE has it's own demand map too to consider (it isn't linear). The drivers can choose one of these new electric motor maps before each stage. These are mapping the power output of the electric motor to the throttle pedal position (driver's demand) (and/or maybe the engine output I'm not sure). They may want 100% electric power by half the pedal, or only start from half way, they may choose only 100% motor at 100% pedal and nothing else. The point is there are 3 strategies for the team to play with. Tom Fowler at Toyota said it'll be likely based on surface type. You can wheelspin on gravel if you go full whack early or you could get a grippy launch on dry asphalt. https://dirtfish.com/rally/wrc/how-t...ost-will-work/
The FIA will determine only energy limits for on-stage boosts per stage, so it's not time. This might be more than the 1000kj given for the launch boost. I assumed everybody will launch at 100% power earlier and maybe I misunderstood your question, so given the torque maps, they may use half the power for twice as long, who knows.
If the FIA give a small deployment energy limit, what is the point in the battery capacity other than the 5km of emission free driving. If they give large amounts, then why cancel it at smidgen of brake and force another regen. Likely then, the regen will be smaller than the deployment limit. Difficult to wrap my head around at this point and I'd hoped these limits were made public for us nerds.
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14th January 2022, 12:33 #500
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There has been comments from drivers about the switch to "stick shift" and the potential to damage the gearbox. As far as I undrstand, they will still be running a sequentiel dogbox, and only got rid of a fairly "simple" hydraulic system to actuate the gearbox. If my understanding of the regulations is correct, how would that be a significant cost saving like the FIA claims and how would one be able to damage the gearbox any more than with a paddle actuated gearbox?
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