The Electric Car
in [Design]
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From: Spehro Pefhany on 1 Aug 2007 14:07 On Wed, 01 Aug 2007 18:44:25 +0100, Eeyore <rabbitsfriendsandrelations(a)hotmail.com> wrote: > > >"Ren�" wrote: > >> On Wed, 01 Aug 2007 17:11:38 +0100, Eeyore >> <rabbitsfriendsandrelations(a)hotmail.com> wrote: >> >> >The official US figures don't agree with you. >> >http://www.fueleconomy.gov/feg/noframes/20801.shtml >> > >> >Graham >> >> OK you win :-) >> not sure what are the export models shown here. >> I was led to believe that smaller engined models could make it. >> >> (not even counting the energy in making the car!) >> >> Anyway, the "3 liter Lopo" (smaller brother of the Golf, designed for >> economy - 4 person 5 door car) does 70 mpg. > >I think you mean the 3 CYLINDER Lupo. It has a 1.2 litre turbodiesel engine. >http://en.wikipedia.org/wiki/Volkswagen_Lupo > >Graham 3-cylinder? Well, if you want real economy, an electric scooter with SLA battery charged from a SMPS brick is about as far as you can go. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff(a)interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
From: Ren� on 1 Aug 2007 14:19 On Wed, 01 Aug 2007 18:44:25 +0100, Eeyore <rabbitsfriendsandrelations(a)hotmail.com> wrote: >I think you mean the 3 CYLINDER Lupo. It has a 1.2 litre turbodiesel engine. >http://en.wikipedia.org/wiki/Volkswagen_Lupo It is indeed a confusing name. The "3 liter" is supposed to express the fact that it consumes less than 3 litres / 100 km. It is a special edition of the Lupo with lightened interior and skinny tyres. The "real life" Priusses (Priae, Prii - whatever) we have here do 15...18 km to a litre (no documentation, asking real life owners on local phora), a figure that is easily beaten by a average diesel car. This is overall use. In city use (stop & go) the Prius may have a real advantage. I do like the hybrid technology - but I wait for the figures to improve. I can imagine e.g. a light 2 stroke diesel, operating in its most efficient fixed rpm, driving a generator / accu combo; wheels driven by electrics only - may have a better yield. Somehow I distrust the factory milage figures. Makes me think of PMPO power.. http://jalopnik.com/cars/news/classic-top-gear-the-prius-kinda-blows-buy-a-diesel-186004.php -- - Ren�
From: Spehro Pefhany on 1 Aug 2007 15:09 On Wed, 01 Aug 2007 20:19:03 +0200, Ren� <rjz~REMOVE~@xs4all.nl> wrote: >On Wed, 01 Aug 2007 18:44:25 +0100, Eeyore ><rabbitsfriendsandrelations(a)hotmail.com> wrote: > >>I think you mean the 3 CYLINDER Lupo. It has a 1.2 litre turbodiesel engine. >>http://en.wikipedia.org/wiki/Volkswagen_Lupo > >It is indeed a confusing name. >The "3 liter" is supposed to express the fact that it consumes less >than 3 litres / 100 km. It is a special edition of the Lupo with >lightened interior and skinny tyres. > >The "real life" Priusses (Priae, Prii - whatever) we have here do >15...18 km to a litre (no documentation, asking real life owners on >local phora), a figure that is easily beaten by a average diesel car. > >This is overall use. In city use (stop & go) the Prius may have a real >advantage. >I do like the hybrid technology - but I wait for the figures to >improve. > >I can imagine e.g. a light 2 stroke diesel, operating in its most >efficient fixed rpm, driving a generator / accu combo; wheels driven >by electrics only - may have a better yield. Don't diesel's have to be heavier to support the higher compression ratio? >Somehow I distrust the factory milage figures. Makes me think of PMPO >power.. > >http://jalopnik.com/cars/news/classic-top-gear-the-prius-kinda-blows-buy-a-diesel-186004.php I trust the test figures in a comparative sense. OTOH, I've not driven a diesel that wasn't smelly, noisy and with crappy performance compared to a gas engine. We won't easily put up with that sort of thing here, nor is the lack of diesel pumps conducive to adoption. And yes, I've driven a modern mid-size (VW Passat) diesel in several European countries. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff(a)interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
From: Eeyore on 1 Aug 2007 15:15 "Ren�" wrote: > I can imagine e.g. a light 2 stroke diesel, operating in its most > efficient fixed rpm, driving a generator / accu combo; wheels driven > by electrics only - may have a better yield. I'm pretty convinced that would be much better. And don't run the engine for shorter journeys. I'm not sure that 2 strokes will meet emissions limits though. Graham
From: Eeyore on 1 Aug 2007 15:18
Spehro Pefhany wrote: > Ren� wrote: > > > >I can imagine e.g. a light 2 stroke diesel, operating in its most > >efficient fixed rpm, driving a generator / accu combo; wheels driven > >by electrics only - may have a better yield. > > Don't diesel's have to be heavier to support the higher compression > ratio? Typically they are. They need to be stronger rather than heavier really. > >Somehow I distrust the factory milage figures. Makes me think of PMPO > >power.. > > > >http://jalopnik.com/cars/news/classic-top-gear-the-prius-kinda-blows-buy-a-diesel-186004.php > > I trust the test figures in a comparative sense. OTOH, I've not driven > a diesel that wasn't smelly, noisy and with crappy performance > compared to a gas engine. We won't easily put up with that sort of > thing here, nor is the lack of diesel pumps conducive to adoption. And > yes, I've driven a modern mid-size (VW Passat) diesel in several > European countries. I drove a Peugeot 1.9 turbo diesel as long ago as 1988. It was pretty brisk. Performance seem to be less of an issue with diesels these days although they don't rev as fast. Graham |