Fuel economy and hybrids
in [Aussie Motorcycles]
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From: JL on 3 Mar 2010 07:07 http://news.drive.com.au/drive/motor-news/audis-rotary-power-shock-20100303-ph0n.html As per the discussion had here a while ago - new audi will come with a 250cc engine running at a fixed rpm and only charging the batteries Not a diesel though. Wankel petrol. JL
From: George W Frost on 3 Mar 2010 22:44 "JL" <jlittler(a)my-deja.com> wrote in message news:b9122204-967f-49d4-bb1b-7ed1343b5117(a)a10g2000pri.googlegroups.com... > http://news.drive.com.au/drive/motor-news/audis-rotary-power-shock-20100303-ph0n.html > > As per the discussion had here a while ago - new audi will come with a > 250cc engine running at a fixed rpm and only charging the batteries > > Not a diesel though. Wankel petrol. > > JL Their figures don't add up either they claim 1.9 litres per 100 kilometres with a 12 litre tank gives it a 250 kilometre range Not to my addition, which comes to about 630 kilometres a tankful and that is only running the generating motor
From: Moike on 4 Mar 2010 00:14 George W Frost wrote: > "JL" <jlittler(a)my-deja.com> wrote in message > news:b9122204-967f-49d4-bb1b-7ed1343b5117(a)a10g2000pri.googlegroups.com... >> http://news.drive.com.au/drive/motor-news/audis-rotary-power-shock-20100303-ph0n.html >> >> As per the discussion had here a while ago - new audi will come with a >> 250cc engine running at a fixed rpm and only charging the batteries >> >> Not a diesel though. Wankel petrol. >> >> JL > > > Their figures don't add up either > they claim 1.9 litres per 100 kilometres with a 12 litre tank gives it a 250 > kilometre range > Not to my addition, which comes to about 630 kilometres a tankful and that > is only running the generating motor > > It may be that the motor isn't capable of recharging the batteries as quickly as they are depleted at cruising speed. Battery range is 50 something kilometers, and IIRC it said it took 5 hrs to recharge on AC power. I can well imagine that about 250 ks is what you get at cruising speed, starting with a full battery, and recharging on the run. Moike
From: CrazyCam on 4 Mar 2010 16:40 Moike wrote: > George W Frost wrote: >> "JL" <jlittler(a)my-deja.com> wrote in message >> news:b9122204-967f-49d4-bb1b-7ed1343b5117(a)a10g2000pri.googlegroups.com... >>> http://news.drive.com.au/drive/motor-news/audis-rotary-power-shock-20100303-ph0n.html >>> >>> >>> As per the discussion had here a while ago - new audi will come with a >>> 250cc engine running at a fixed rpm and only charging the batteries >>> >>> Not a diesel though. Wankel petrol. >>> >>> JL >> >> >> Their figures don't add up either >> they claim 1.9 litres per 100 kilometres with a 12 litre tank gives it >> a 250 kilometre range >> Not to my addition, which comes to about 630 kilometres a tankful and >> that is only running the generating motor >> > It may be that the motor isn't capable of recharging the batteries as > quickly as they are depleted at cruising speed. Battery range is 50 > something kilometers, and IIRC it said it took 5 hrs to recharge on AC > power. I can well imagine that about 250 ks is what you get at cruising > speed, starting with a full battery, and recharging on the run. That does, indeed, sound like what is happening. I wonder if it was intentional, or if they thought that the vehicle would be able to proceed purely under the petrol system's generated electricity, and only found out at testing that it wouldn't. It would seem that their claimed fuel consumption claim is rather sneaky.... not counting the electricity shoved into the batteries before it starts. regards, CrazyCam
From: JL on 4 Mar 2010 21:33
On Mar 5, 8:40 am, CrazyCam <Crazy...(a)optusnet.com.au> wrote: > Moike wrote: > > George W Frost wrote: > >> "JL" <jlitt...(a)my-deja.com> wrote in message > >>news:b9122204-967f-49d4-bb1b-7ed1343b5117(a)a10g2000pri.googlegroups.com.... > >>>http://news.drive.com.au/drive/motor-news/audis-rotary-power-shock-20.... > > >>> As per the discussion had here a while ago - new audi will come with a > >>> 250cc engine running at a fixed rpm and only charging the batteries > > >>> Not a diesel though. Wankel petrol. > > >>> JL > > >> Their figures don't add up either > >> they claim 1.9 litres per 100 kilometres with a 12 litre tank gives it > >> a 250 kilometre range > >> Not to my addition, which comes to about 630 kilometres a tankful and > >> that is only running the generating motor > > > It may be that the motor isn't capable of recharging the batteries as > > quickly as they are depleted at cruising speed. Battery range is 50 > > something kilometers, and IIRC it said it took 5 hrs to recharge on AC > > power. I can well imagine that about 250 ks is what you get at cruising > > speed, starting with a full battery, and recharging on the run. > > That does, indeed, sound like what is happening. > > I wonder if it was intentional, or if they thought that the vehicle > would be able to proceed purely under the petrol system's generated > electricity, and only found out at testing that it wouldn't. Possibly, a less cynical reading would be that the form factor clearly calls it out as a city car and hence they aren't expecting you to take it on the highway, so you'll be charging it several times per tank of fuel (given average distance travelled for that sort of car was circa 40Km per day - IIRC). > It would seem that their claimed fuel consumption claim is rather sneaky..... > not counting the electricity shoved into the batteries before it starts. If you counted the cost of charging the batteries you'd be lucky to move the consumption rate ie convert $2.50 worth of power spent charging it into an extra 2litres of fuel consumed for the same range and I doubt that moves the consumption far JL |