Snowy.... With the law of averages... it's possible I suppose
I would imagine you have to do a lot of miles before you start saving any money As you slide down the banister of life
may no splinters point your way
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21st Jul 2008 11:15 pm
Shrinky
Member Since: 05 Jul 2007
Location: Cotswolds
Posts: 2515
You make sense. both of you I get the point of switching completely between petrol and LPG but squirting a bit of LPG in your diesel
Global Warming.... I'm luvvin it
21st Jul 2008 11:29 pm
norto
Member Since: 10 Apr 2006
Location: batemans bay
Posts: 1605
Most diesels only burn about 75% of their fuel, the rest goes out the exhaust as smoke.
The gas is an "igniter" to get the diesel burn rate up to 98%......which equals more power
and more economy.Pete
22nd Jul 2008 5:48 am
Rob Bruce
Member Since: 18 Jun 2006
Location: Canberra
Posts: 687
All engines run on gas,
Petrol is vaporised via the carby. or injectors.
Diesel is vaporised via the injectors.
All this ends up in reality as gas.
Gas is already a gas and just flows in via a entry point.
So why not use petrol to do the same job as gas fumagation in a diesel
I would not like to try this on a TDV6 but with a little experementing on a older school diesel it would be interesting to see if the same effect could be acheved.
Lodgically it should work, but you would have to be very carefull to get the correct mix every time .
OK all technally minded chaps, what do you think
Rob
PS. This may be lateral thinking dorne mad MY05 TDV6 SE, dirt colour, Now cremated !!!!!!!
22nd Jul 2008 8:19 am
al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10297
theres no science to this (well there is a bit). All that you are looking for is a more efficient burn, which is where the LPG bit comes in, you could try NOX if you want. Trucks have been using additional LPG with Diesel for quite a while, so the technology works.
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I understand the concept of it. I just want to understand how it costs in. My question is how much LPG is used to a tank of diesel? The surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us yet.
22nd Jul 2008 10:19 am
Shrinky
Member Since: 05 Jul 2007
Location: Cotswolds
Posts: 2515
and is the LPG replacing some of the Diesel or is it in addition to it.Global Warming.... I'm luvvin it
I've been looking into it a bit as well. A local converter adds between 6 and 10 percent gas for catalytic benefits claimed to be up to 30% more power or similar fuel economy increase, It only needs a 20litre gas tank, I talked to him and he was pretty confident, had pictures of td5 defender and disco td5 fittings, uses a volume based injection system that does not touch the disco computer, flow based. Pricey, $4500 but eligible for the fitting subsidy.
Booked the wifes subaru forester in for a sequential gas injection fitup while I think about the return on investment for the disco after warranty finishes next year.
Member Since: 12 Feb 2006
Location: Bristol
Posts: 37
Snowy
The answer to your question is approx. 2.5 tanks of diesel to one of lpg (70litres).
My current cost of LPG is 50p so £35. The reason for being a bit vague on the answer is because LPG fuel gauges are
very inaccurate so I generally refill the LPG tank on my second diesel refill.
Thanks Dellpitch, that makes it a lot clearer The surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us yet.
22nd Jul 2008 9:56 pm
Shrinky
Member Since: 05 Jul 2007
Location: Cotswolds
Posts: 2515
Maybe I am being really thick here but I can't understand where the benefit is How are you saving money and you must have to do "character" miles to see any benefit Global Warming.... I'm luvvin it
22nd Jul 2008 10:07 pm
norto
Member Since: 10 Apr 2006
Location: batemans bay
Posts: 1605
Rob Bruce wrote:
All engines run on gas,
Come on Rob, try to keep up......ill type this slowly for you
Diesel requires a much higher temp to ignite than LPG
therefore the LPG starts to burn much earliear than the diesel
which starts the combustion process earlier resulting in
more of the injected diesel being combusted
More diesel being burnt equal more power ,more power from
the same amount of fuel should equal less fuel used. Pete
Can someone explain to me how they sell LPG in litres?
As it's a gas it is compressible and thereofre the volume depends upon the pressure at which it is stored.
Or, as the name implies, is it stored and sold at such presuures that it is actually a liquid?Too much intellectual firepower can damage your common sense.
23rd Jul 2008 7:53 am
Rob Bruce
Member Since: 18 Jun 2006
Location: Canberra
Posts: 687
Peter, Yes I know, but what I was thinking was LPG and ULP when in the combustion chamber perform nearly the same, except you need slightly more LPG than ULP to do the same Job. So it would seem ULP could be used instead of LPG and do the same job on a diesel as LPG fumagation. Ie. mix a small quanity of ULP with diesel, this would save all the cost of the gas tank and assorted other gas equipment, not to mention save space.
Some 24 years ago on a trip back from Cape York a mate in his Nissan accenditly put petrol in it, this was about 50/50 diesel petrol as it turned out, it ran real rough, then boiled, when we investergated he realised what had happened. So drain tank, refill with diesel, blead, and all was OK. NO harm done. Rembering what had happened made me think mayby a small amount of petrol may do the same job as the LPG fumagation.
Also I do know the diferent flash points and propertys of the above fules.
Cheers,
RobMY05 TDV6 SE, dirt colour, Now cremated !!!!!!!
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
What? You mean I'm making sense 
I get the point of switching completely between petrol and LPG but squirting a bit of LPG in your diesel 
All engines run on gas, 
