Regenerative systems (KERS)

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
xpensive
xpensive
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Re: Regenerative systems (KERS)

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Now that's an idea pipex! Imagine the tracks, we could have the real Spa and Nurburgring back, with cars of today and the future! Nobody will ever get hurt and it should be almost totally green, how about that?
"I spent most of my money on wine and women...I wasted the rest"

pipex
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Re: Regenerative systems (KERS)

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;)
The only problem is that "glamour" people will be upset, having nowhere to show themselves. :)
"We will have to wait and see".

xpensive
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Re: Regenerative systems (KERS)

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Not to worry pipex, in the future we will have "holodeck".
"I spent most of my money on wine and women...I wasted the rest"

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Callum
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Re: Regenerative systems (KERS)

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I'm sorry if the idea has been brought up before but i don't want to read through 22pages!

I was wondering if the KERS device could be used as a simple ABS system...

If the car is cracking into the first corner -breaks and KERS regenerating and then a rear tyre lockup is detected the KERS regenerating could be turned off...in a way modulating the breaks.

I was just wondering what everyone thinks? :)

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jddh1
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Re: Regenerative systems (KERS)

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Thanks for bringing this thread to the top of the list. I was just about to start looking for it.

xpensive
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Re: Regenerative systems (KERS)

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This forum can be a tad character-building at times, right jddh1?
"I spent most of my money on wine and women...I wasted the rest"

RacingManiac
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Re: Regenerative systems (KERS)

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Callum wrote:I'm sorry if the idea has been brought up before but i don't want to read through 22pages!

I was wondering if the KERS device could be used as a simple ABS system...

If the car is cracking into the first corner -breaks and KERS regenerating and then a rear tyre lockup is detected the KERS regenerating could be turned off...in a way modulating the breaks.

I was just wondering what everyone thinks? :)
I think its possible, since the control system for KERS is developed by the team I think there could be potential for that...

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ISLAMATRON
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Joined: 01 Oct 2008, 18:29

Re: Regenerative systems (KERS)

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RacingManiac wrote:
Callum wrote:I'm sorry if the idea has been brought up before but i don't want to read through 22pages!

I was wondering if the KERS device could be used as a simple ABS system...

If the car is cracking into the first corner -breaks and KERS regenerating and then a rear tyre lockup is detected the KERS regenerating could be turned off...in a way modulating the breaks.

I was just wondering what everyone thinks? :)
I think its possible, since the control system for KERS is developed by the team I think there could be potential for that...
KERS is controlled by the the SECU and not allowed to be used in such a manor, it is also not connected to the brakes, but does put a load onto the drivetrain, somewhat similar to when the teams used to use computer controlled engine braking as a form of traction control under heavy braking as to not lock up the rear wheels. All of that has been done away with under the new SECU rules.

It actually has been answered several times in the 22 prior pages that were not read.

MattF1
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Re: Regenerative systems (KERS)

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Can someone please clarify the technical regulation 5.2.2 please, I'm not quite sure what it means.
FIA wrote:5.2.2
With the exception of one fully charged KERS, the total amount of recoverable energy stored on the car must not exceed 300kJ. Any which may be recovered at a rate greater than 2kW must not exceed 20kJ.
I don't get what this means, is it that KERS can only have 300kJ of recoverable energy stored at one time; what throws me is the 'With the exception of one fully charged KERS'. And does the second part mean, is it that energy recovered at a rate of over 2kW can only sum to 20kJ?

Many thanks if you can help.

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jddh1
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Re: Regenerative systems (KERS)

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xpensive wrote:This forum can be a tad character-building at times, right jddh1?
Indeed.
And now I begin reading the 22 previous pages to perhaps find what I'm looking for.
:idea:

xpensive
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Re: Regenerative systems (KERS)

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For jddh1;
I just did, again, the early pages are most interesting, where the FIA rules for 2009 explains a few "thangs";

5.2 Other means of propulsion:
5.2.1 The use of any device, other than the 2.4 litre, four stroke engine described in 5.1 above and one KERS, to power the car, is not permitted.
5.2.2 With the exception of one fully charged KERS, the total amount of recoverable energy stored on the car must not exceed 300kJ. Any which may be recovered at a rate greater than 2kW must not exceed 20kJ.
5.2.3 The maximum power, in or out, of any KERS must not exceed 60kW. Energy released from the KERS may not exceed 400kJ in any one lap. Measurements will be taken at the connection to the rear wheel drive train.
5.2.4 Any KERS may only be capable of increasing the stored energy whilst the car is moving on the track. Release of power from any such system must remain under the complete control of the driver at all times the car is on the track.
5.2.5 Cars must be fitted with homologated sensors which provide all necessary signals to the SDR in order to verify the requirements above are being respected.

5.2.3 and 5.2.5 explains a few things indeed, the battery or fly-wheel can store as much energy as you like, limited to a rate of 60kW, while the mechanical energy released must not exceed 400 kJ per lap at the same rate, which will be monitored by the FIA.
Conclusively, efficiency of the KERS system doesn't matter, it's the utilized mechanical energy per lap that counts.

For MattF1;
5.2.2 covers energy storage other than KERS, the use of a starter motor I guess.
"I spent most of my money on wine and women...I wasted the rest"

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ISLAMATRON
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Re: Regenerative systems (KERS)

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I think 5.2.2 was put in so the teams didnt connect the battery that was already on board to the KERS system and increase the KERS output. Thats my only idea, unless they allready incorperated rules for HERS.

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xpensive
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Re: Regenerative systems (KERS)

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I don't think so, the rules allows you store as much energy as you like, with the only limitation being the rate of 60 kW, what is then controlled is the 400kJ/60kW of mechanical energy/power going into the drivetrain from the battery at release.
But if you already had an electrical starter motor system however, this could in theory be used as an extra-KERS, but the 5.2.2 limits this to a measly 2kW.
"I spent most of my money on wine and women...I wasted the rest"

Professor
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Re: Regenerative systems (KERS)

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The Kers system is 300 volts or so and the other systems are 12 volt. The two are isolated, and it was the loss of isolation that was suspected in the early BMW failure that shocked the mechanic.

Could you use the Kers motor/generator to start the car? Sure. The 60kW is 80.42 HP (60,000W/746) so that should get the job done if fully charged. I don't know if you are allowed to.

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Re: Regenerative systems (KERS)

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Welcome Professor and what a promising nick, you will not be easily forgotten here.

I think you can find the answer to your Q upstream this thread, once or twice at least, please do not let the 22 pages discourage you, it's most educational.
"I spent most of my money on wine and women...I wasted the rest"