Carryfast:
raymundo:
I had an old hand start Kelvin diesel engine that you had to start on petrol then once the revs were up throw a lever to switch over to diesel but a bugger to get going unless it were warm … and if you never let the revs build up it would or could kick back and run backwards ! Fact
Let me guess you also think that the petrol fuelling system all worked through the same diesel injection system without a spark plug at the same diesel compression ratio.As opposed to a switchable seperate curburation,ignition and combustion chamber system that allowed the petrol fuelling side to be shut down and increased the compression when running on diesel and vice versa.
Meanwhile science fiction is getting a bit closer to ‘fact’ in that regard but not ‘yet’. 
machinedesign.com/news/compressi … as-engines
Don’t assume things all the time C/F because you could be wrong, not that you would ever admit it though. The engine had a separate combustion chamber for the petrol side complete with spark plug and magneto that you had to engage for petrol and disengage once running on diesel.
Evil8Beezle:
Our lot trialed a system where it used both fuels and I’m told that you needed the Derv to give it any power. The LPG was OK for cruising and holding a speed, but was hopeless when things got a bit lumpy…
Anyway, the accountants will have looked at all this and if LPG was a real alternative it would have got somewhere by now…
Which it hasn’t!
That’s what I said you were using a diesel ‘and’ gas set up.In which case it’s no surprise that it won’t work properly.As opposed to a dedicated conversion using spark ignition and the correct compression ratio to suit the fuel.In which case if you read the details of the Aussie conversion you’ll see that the correctly converted Merc engine gives ‘more’ power the the pre conversion diesel spec to the point where they have to back the power off to stop it over loading its transmission secification limits.
As for the accountants as I said it’s anyone’s guess why they’d prefer all the aggro and expense involved in cleaning up diesel emissions.Rather than start from the easier and cheaper point of using cleaner alternative fuels.On that note I’d support Kahn’s ideas in at least making that change,away from diesel,mandatory thereby removing much of the excuse for the eco ■■■■ bs directed against the road transport industry. 
raymundo:
Don’t assume things all the time C/F because you could be wrong, not that you would ever admit it though. The engine had a separate combustion chamber for the petrol side complete with spark plug and magneto that you had to engage for petrol and disengage once running on diesel.
Great and that ‘doesn’t’ support the idea that you ‘can’t’ realistically use most practical cleaner alternative fuels in a compression ignition engine how.As opposed to ‘does’ and ‘can’ which is what you seemed to be suggesting. 
So mate, we convert all engines to LPG! 
Can you do me a favour then, and google what percentage of LPG is produced in the oil refining process?
Don’t worry, I’ll save you the trouble as I believe it’s about 3%…
See the problem? 
Evil8Beezle:
So mate, we convert all engines to LPG!
Can you do me a favour then, and google what percentage of LPG is produced in the oil refining process?
Don’t worry, I’ll save you the trouble as I believe it’s about 3%…
See the problem?
No we convert diesel engines used in commercial vehicles.
As for supply and energy security away from the Arabs I thought that was part of its advantages over oil.It being mostly derived from natural gas production not oil refining.
aegpl.eu/media/81922/autogas … %202mb.pdf
Obviously ignore 2.2 above.
mcclatchydc.com/news/nation- … 70299.html
Google must see carryfast coming and says ffs not him again.
Colin_scottish:
Google must see carryfast coming and says ffs not him again.
No it’s all those let’s say a bit challenged in the technical understanding stakes on here getting upset when they find their ideas demolished by the ‘confirmation’ of what I’ve said,that’s now available on the interweb.Bearing in mind I knew that you can’t run a bleedin diesel engine on LPG without converting it to spark ignition and dropping the compression and the stuff is as cheap/plentiful as chips and not run by the OPEC mafia,before the internet was invented. 
^^^^ you could have just written “sod off Colin”.
the maoster:
^^^^ you could have just written “sod off Colin”.
Why do it in three words when you can spin it out for ten pages repeating the same thing over and over again…
Carryfast:
Evil8Beezle:
So mate, we convert all engines to LPG!
Can you do me a favour then, and google what percentage of LPG is produced in the oil refining process?
Don’t worry, I’ll save you the trouble as I believe it’s about 3%…
See the problem?
No we convert diesel engines used in commercial vehicles.
As for supply and energy security away from the Arabs I thought that was part of its advantages over oil.It being mostly derived from natural gas production not oil refining.
aegpl.eu/media/81922/autogas … %202mb.pdf
Obviously ignore 2.2 above.
mcclatchydc.com/news/nation- … 70299.html
First off, why am I bothering?
Then I have to ask WTF do the Arabs do with the rest of it? 
And let’s not go there at then finding enough LPG ‘STILL CHEAPER’ than Derv…
The accountants, politicians and power players have made their decision mate, LPG is going nowhere…
Evil8Beezle:
Carryfast:
First off, why am I bothering?
Then I have to ask WTF do the Arabs do with the rest of it?
And let’s not go there at then finding enough LPG ‘STILL CHEAPER’ than Derv…
The accountants, politicians and power players have made their decision mate, LPG is going nowhere…
I thought the topic was all about the fact that the ‘politicians’ and ‘power players’ ( like Kahn for example ) have rightly made the decision against the long term further use and therefore the phasing out of obsolete dirty diesel.In which case you’d need to have your head in the sand if you don’t think that LPG isn’t one the best answers to that.