36 volt systems what are the pros and cons

4 forty · Aug 15th, 2002, 18:10

having paid a visit to a reputable engine tuner this week,he told me that within the next two years, all new cars would have a 36 volt system, as the present 12 volt system can not cope with all the electical load of all the accesories now being fitted.
i know hgv,s have a 24 volt system, but what will the drawbacks be to car owners i wonder?
comments please on this topic, no doubt there will be a good response.
regards
paul

pettaw · Aug 15th, 2002, 18:50

Sounds a bit weird, means that the batteries would have to be huge, or else with very small cells. Could make sense I suppose, 'cos its not the low voltage that is the prob with car electrics, its the nasty thing voltage drop and I suppose that a higher voltage would be less sensitive to voltage drop.

Andy

Peter Milnes · Aug 15th, 2002, 23:24

Not to mention less current for the same power, lower rated fuses and relays, motors etc. Just think, starting your car with about 75Amps instead of 300Amps plus!!

All the best, Peter.

foggyjames · Aug 17th, 2002, 00:33

If they make it run on 240v, that would slove so many accessory problems :) no more car fridges, etc....and I could plug both my 2.5kW power amps straight in instead of having to buy a 12v car amp...!

ok, so it would still need inverting....and the battery would be enormous....but its a nice idea, eh?

cheers

James

Peter Milnes · Aug 17th, 2002, 23:55

They used to do something similar to your proposal. They called them tramcars and trolleybuses.

All the best, Peter.

Simon Linton · Aug 18th, 2002, 08:19

They still do, Peter - they call them diesel-electric locomotives

foggyjames · Aug 18th, 2002, 09:46

Except that they have 6000-odd HP, and run at upto 100kV!

cheers

James

Simon Linton · Aug 18th, 2002, 22:40

...well, nobody's perfect...

pettaw · Aug 19th, 2002, 06:19

Yeah and 0-60 in about 10 minutes, top of 125 mph though LOL

Andy

Seriously though, don't some cars have this facility already, a low current 240V supply or am I dreaming?

foggyjames · Aug 19th, 2002, 08:49

Yeah - I think youre right. My mates ford galaxy has a pair of (12v) cigar lighter sockets in the back, but im sure that some others have 240v feeds.

cheers

James

Aug 15th, 2002, 18:10	#1
4 forty VOC Member Last Online: Aug 12th, 2015 14:44 Join Date: Dec 2001 Location: sunderland	36 volt systems what are the pros and cons having paid a visit to a reputable engine tuner this week,he told me that within the next two years, all new cars would have a 36 volt system, as the present 12 volt system can not cope with all the electical load of all the accesories now being fitted. i know hgv,s have a 24 volt system, but what will the drawbacks be to car owners i wonder? comments please on this topic, no doubt there will be a good response. regards paul

Aug 15th, 2002, 18:50	#2
pettaw Forum Support Team Last Online: Jul 23rd, 2023 15:29 Join Date: Jan 1970 Location: Glasgow, London	RE: 36 volt systems what are the pros and con Sounds a bit weird, means that the batteries would have to be huge, or else with very small cells. Could make sense I suppose, 'cos its not the low voltage that is the prob with car electrics, its the nasty thing voltage drop and I suppose that a higher voltage would be less sensitive to voltage drop. Andy

Aug 15th, 2002, 23:24	#3
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: 36 volt systems what are the pros and con Not to mention less current for the same power, lower rated fuses and relays, motors etc. Just think, starting your car with about 75Amps instead of 300Amps plus!! All the best, Peter.

Aug 17th, 2002, 00:33	#4
foggyjames 300 Register Keeper Last Online: Today 01:27 Join Date: Dec 2001 Location: Nottingham	RE: 36 volt systems what are the pros and con If they make it run on 240v, that would slove so many accessory problems :) no more car fridges, etc....and I could plug both my 2.5kW power amps straight in instead of having to buy a 12v car amp...! ok, so it would still need inverting....and the battery would be enormous....but its a nice idea, eh? cheers James __________________ VOC 300-series Register Keeper '13 V70 D4 SE Lux '89 740 Turbo Intercooler '88 360 Turbo Intercooler '84 360 GLT '81 343 GLS R-Sport '79 343 DL '70 164

Aug 17th, 2002, 23:55	#5
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: 36 volt systems what are the pros and con They used to do something similar to your proposal. They called them tramcars and trolleybuses. All the best, Peter.

Aug 18th, 2002, 08:19	#6
Simon Linton 850/70 Register Keeper Last Online: Apr 24th, 2008 19:02 Join Date: Dec 2000 Location: Leicester	RE: 36 volt systems what are the pros and con They still do, Peter - they call them diesel-electric locomotives

Aug 18th, 2002, 09:46	#7
foggyjames 300 Register Keeper Last Online: Today 01:27 Join Date: Dec 2001 Location: Nottingham	RE: 36 volt systems what are the pros and con Except that they have 6000-odd HP, and run at upto 100kV! cheers James __________________ VOC 300-series Register Keeper '13 V70 D4 SE Lux '89 740 Turbo Intercooler '88 360 Turbo Intercooler '84 360 GLT '81 343 GLS R-Sport '79 343 DL '70 164

Aug 18th, 2002, 22:40	#8
Simon Linton 850/70 Register Keeper Last Online: Apr 24th, 2008 19:02 Join Date: Dec 2000 Location: Leicester	RE: 36 volt systems what are the pros and con ...well, nobody's perfect...

Aug 19th, 2002, 06:19	#9
pettaw Forum Support Team Last Online: Jul 23rd, 2023 15:29 Join Date: Jan 1970 Location: Glasgow, London	RE: 36 volt systems what are the pros and con Yeah and 0-60 in about 10 minutes, top of 125 mph though LOL Andy Seriously though, don't some cars have this facility already, a low current 240V supply or am I dreaming?

Aug 19th, 2002, 08:49	#10
foggyjames 300 Register Keeper Last Online: Today 01:27 Join Date: Dec 2001 Location: Nottingham	RE: 36 volt systems what are the pros and con Yeah - I think youre right. My mates ford galaxy has a pair of (12v) cigar lighter sockets in the back, but im sure that some others have 240v feeds. cheers James __________________ VOC 300-series Register Keeper '13 V70 D4 SE Lux '89 740 Turbo Intercooler '88 360 Turbo Intercooler '84 360 GLT '81 343 GLS R-Sport '79 343 DL '70 164

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