http://www.electrodynamics.net/document ... en2002.pdfxpensive wrote:Speaking of realistic, a 100 kRpm generator?
http://www.electrodynamics.net/document ... en2002.pdfxpensive wrote:Speaking of realistic, a 100 kRpm generator?
Heh, I guess rectification and general electrical operation is quite tricky at that frequencies, that's for sure. Although some googling reveals that there are circuits for rectification even at 600kHz.xpensive wrote:But I can't figure what sort of frequency you get for ac-output with varying rpm, but I guess you rectify it anyway?
Formula One Race Director Charlie Whiting wrote:“We have new powertrain coming in 2014, with all sorts of energy recovery devices, which will I think bring the power up to a little over what we have at the moment,” he said.
“The cornerstone of this new power unit is that cars will only be able to use 100kg of fuel for a race,” he added. “There is also a fuel flow limit that will be checked and verified by the FIA fuel flow meter which will be fitted in all cars’ fuel tanks. Currently the fuel used is about 140 or 150kg and that will come down to the 100kg mark. That is a significant difference.
“Efficiency is the key thing,” he concluded.“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race. It is a significant change to the efficiency of the car.”
your standard switchmode power supply runs at 100's of kHz sometime MHz, so the frequency isn't really that hightimbo wrote:Heh, I guess rectification and general electrical operation is quite tricky at that frequencies, that's for sure. Although some googling reveals that there are circuits for rectification even at 600kHz.xpensive wrote:But I can't figure what sort of frequency you get for ac-output with varying rpm, but I guess you rectify it anyway?
Dont forget that they can gear the generator to the turbine.xpensive wrote:2 MJ per lap, that means an average 25 kW over an 80 second lap, is that realistic?wuzak wrote: ...
Renault have claimed in their press release that they can get 2MJ+ from the MGU-H per lap.
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25 kW at 100 kRpm, that's only 2.4 Nm though. Interesting.
Speaking of realistic, a 100 kRpm generator?
The point here is they won't, at least not Renault and probably no other manufacturer.wuzak wrote:Dont forget that they can gear the generator to the turbine.
This makes no sense at all.Formula One Race Director Charlie Whiting wrote:“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race.”
I should imagine that they would have extra in the fuel pickup area. From what I recall, there was about 4-5l of fuel in the collector in the BAR when they had their disagreement (weight of the car without that fuel was lower than the minimum).Saribro wrote:This makes no sense at all.Formula One Race Director Charlie Whiting wrote:“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race.”
If teams are only allowed to use 100kg, they aren't going to put in more, it's a complete waste.
If you've used the allowed 100kg before the end of the race, how is that "not running out of fuel"? Is Charlie just going to wave it off with: "Oh well, at least you tried, have your points/podium/win anyway."
This makes no sense at all.
The point is you cannot run out of fuel unless you do tricky and somewhat dumb things, like artificially burning fuel on slow sections of the track to make your MGU-H produce electricity for storage. The race fuel allocation is not meant to do such things and if you decide to go against the purpose of the race fuel allocation you are on your own. Under normal conditions the combination of race fuel allocation and fuel mass flow specification will take care that you will finish the race.Saribro wrote:This makes no sense at all.Formula One Race Director Charlie Whiting wrote:“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race.”
If teams are only allowed to use 100kg, they aren't going to put in more, it's a complete waste.
If you've used the allowed 100kg before the end of the race, how is that "not running out of fuel"? Is Charlie just going to wave it off with: "Oh well, at least you tried, have your points/podium/win anyway."
This makes no sense at all.
I agree, either CW was misquoted or he's not on top of the rules himself, the latter wouldn't xactly surprise me either as I very much doubt if the old spannerman wrote the technical regulations himself.Saribro wrote:This makes no sense at all.Formula One Race Director Charlie Whiting wrote:“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race.”
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It will depend on tracks.xpensive wrote:I agree, either CW was misquoted or he's not on top of the rules himself, the latter wouldn't xactly surprise me either as I very much doubt if the old spannerman wrote the technical regulations himself.Saribro wrote:This makes no sense at all.Formula One Race Director Charlie Whiting wrote:“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race.”
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I believe it is a point of discussion however, you will have an average of 16.7 g/sec over a 100 minute race, or 60% of the race on full flow 27.8 g/sec, anyone knows what is realistic here?
The quote is correct:xpensive wrote:I agree, either CW was misquoted or he's not on top of the rules himself, the latter wouldn't xactly surprise me either as I very much doubt if the old spannerman wrote the technical regulations himself.Saribro wrote:This makes no sense at all.Formula One Race Director Charlie Whiting wrote:“You won’t see cars run out of fuel – there’s no limit to the amount of fuel a team can put in a car but there is a limit to how much they can use in a race.”
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I believe it is a point of discussion however, you will have an average of 16.7 g/sec over a 100 minute race, or 60% of the race on full flow 27.8 g/sec, anyone knows what is realistic here?