| [ Total Views: 1387 | Total Replies: 12 | Thread Id: 76032 ] |
|
|
 e-square12
Learner Dubber
Posts: 7
Threads: 2
Registered: April 20th, 2009
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
 posted on April 20th, 2009 at 06:20 AM |
|
|
VW Beetle Fuel Consumption
What is the average fuel consumption of a stock beetle at idle?
|
|
|
 vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on April 20th, 2009 at 07:13 AM |
|
|
| Quote: |
What is the average fuel consumption of a stock beetle at idle?
|
your question dosent make sense
If the a beetle was just sitting and ideling the engine it would probally run for a week
dont know why you would do this but it must be an experiment
|
|
|
e-square12
Learner Dubber
Posts: 7
Threads: 2
Registered: April 20th, 2009
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on April 20th, 2009 at 07:51 AM |
|
|
| Quote: | Originally
posted by vw54
| Quote: |
What is the average fuel consumption of a stock beetle at idle?
|
your question dosent make sense
If the a beetle was just sitting and ideling the engine it would probally run for a week
dont know why you would do this but it must be an experiment
|
The fuel consumption is measured in galons per hour.I'm just looking for an estimate...i read that the average fuel consumption of a 4-cylinder
engine would be about .25gal/hr, but I don't know if that's accurate.
|
|
|
vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on April 20th, 2009 at 08:04 AM |
|
|
Why would you want to know
do u want it in US Gallons or Imperial
|
|
|
e-square12
Learner Dubber
Posts: 7
Threads: 2
Registered: April 20th, 2009
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on April 20th, 2009 at 10:33 AM |
|
|
US Gallon...I want to try a hydrogen generator on a beetle (need to estimate how much it will consume).
|
|
|
colonel mustard
Son of Jim - Creator of Good
Posts: 2829
Threads: 51
Registered: February 27th, 2009
Member Is Offline
Theme: UltimaBB Pro Black
|
| posted on April 20th, 2009 at 10:49 AM |
|
|
well. I guess that you would need to get a beetle of each engine size.... then get them running...... take out all the fuel and measure how much it
takes.... sounds like a pretty silly idea.
|
|
|
vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on April 20th, 2009 at 11:23 AM |
|
|
Are we only deal in Imperial Gallons here in Aussie
|
|
|
e-square12
Learner Dubber
Posts: 7
Threads: 2
Registered: April 20th, 2009
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on April 20th, 2009 at 12:28 PM |
|
|
...Imperial Gallons then
colonel mustard: you could do an approximation just by putting a specific quantity of fuel in the tank and take the time the car
takes to consume it. After that, you just divide both quantities and that would give you an estimate. Since I don't have a beetle yet, I can't do it
myself.
|
|
|
modulus
A.k.a.: Peter Hill
Veteran Volks Folk
Posts: 2009
Threads: 76
Registered: July 1st, 2003
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro White
Mood: modular
|
| posted on April 20th, 2009 at 12:44 PM |
|
|
We measure fuel consumption in litres/100 km over here under the SI system. Your question has caused me to divide by zero.
|
|
|
vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on April 20th, 2009 at 01:59 PM |
|
|
you didnt state what size VW engine air or water cooled
Aspirated or Injected more information please
I think i can guess what the conversion number is for Imperial to US gallons
but i will first have to convert Litres to Imperial gallons i might get my sums rong
also important is the octane rating of the fuel being used do u want 92 96 or 98 ?
|
|
|
e-square12
Learner Dubber
Posts: 7
Threads: 2
Registered: April 20th, 2009
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on April 20th, 2009 at 03:42 PM |
|
|
If you could show your calculations, I would appreciate it.
octane: 92
engine: 1.2L (1200) carburetor air-cooled
thanks
|
|
|
vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on April 20th, 2009 at 05:24 PM |
|
|
E = MC squared
|
|
|
Phil74Camper
Son of Jim - Creator of Good
Head in the Clouds
Posts: 2703
Threads: 193
Registered: August 28th, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on April 21st, 2009 at 08:28 AM |
|
|
The US gallon (known as the 'wine' or 'Queen Anne' gallon) is an older measurement than the Imperial gallon, dating back to around 1706. It was
used originally for wine measurements, based around a cylindrical container 7 inches in diameter and 6 inches high. During the reign of Queen Anne, it
was redefined as a box, 3 x 7 x 11 inches, which works out as 231 cubic inches exactly. This is more accurate than the use of 22/7 as pi, which is
only right to two decimal places. The 231 cubic inch Queen Anne gallon is still used today, as the US Gallon. it is the standard fluid measurement in
the USA, and in some central and South American countries, although most of them have gone metric now. A fluid ounce is 1/128 of a US gallon.
A US gallon is 3,785.412 mL (or 3.785 litres).
In 1824 the British defined a new volume measurement for ale, based on the volume of 10 pounds of pure water at 60 deg F and 30 inches Hg atmospheric
pressure. This became the British, or Imperial, gallon and it is 20% bigger than a US gallon. The British abolished all other fluid measures, and the
Imperial gallon became standard throughout Britain and the Empire (Australia, Canada, etc). A fluid ounce is 1/160 of an Imperial gallon.
An Imperial gallon is 4,546.09 mL (or 4.546 litres).
Australia ditched the old imperial system in 1974, and we have been a happily metric country every since, like almost all the rest of the world. The
UK has been more reluctant to change, but they now also buy petrol by the litre, and the Imperial gallon ceased to be a legal unit in the UK in
2000.
Being metric, we use the standard Litres per 100 km to measure fuel consumption. Take your fuel total in litres, divide by the km travelled and
multiply by 100. This is logical - if you use more fuel, the figure goes up. If you become more economical and use less fuel, the figure goes down.
This is the opposite of the old, confusing, 'miles per gallon' (which gallon?), where the numbers went UP if you used less fuel.
To convert mpg to L/100 km is easy - you use a mathematical contant. There are 0.621 miles in 1 km, and there are either 3.785 or 4.546 litres per
gallon. To get a constant:
A. US Gallon: 0.621 x 3.785 x 100 = 235.048 (you can just use 235 - it's close enough for normal use)
B. Imp Gallon: 0.621 x 4.546 x 100 = 282.307 (you can just use 282 - ditto)
OK. To convert either way, take you constant (either 235 or 282, depending on your gallon) and divide the figure into it. It works BOTH ways.
Eg1: 35 mpg (US): 235 / 35 = 6.71 L/100 km.
Eg2: 35 mpg (Imp): 282 / 35 = 8.06 L/100 km.
Eg3: 8.5 L/100 km: 235 / 8.5 = 26.6 US mpg
Eg4: 8.5 L/100 km: 282 / 8.5 = 33.2 Imp mpg
This is for normal fuel use in driving. VW 1200 Beetles generally used between 8 and 10 L/100 km, depending on conditions and how they were driven.
More in the city, less on a country cruise.
Stationary use is another thing - that would be litres per hour. Volkswagen Industrial Engines may have had published estimates printed in their
brochures, but I don't have any of those. Any figure given would also be an estimate, as these engines were designed for use over a range of engine
speeds, constant or otherwise.
The only way would be to measure one directly. See how long it takes to idle away a known quantity of fuel.
|
|
|
