How comes Europe and the UK in particular hasn’t taken to LNG?
Are there any fleet operators here that have reviewed switching over? If so what were the reasons behind not going a head with it?
There seems to be pros and cons to LNG fueled vehicles what are you opinions? DO you think it is the right way forward?
I still struggle to find decent priced adblue at the roadside , cant imagine what it would be like looking for gas as well
DHL are running an LNG/dual fuel fleet on some contracts
I think an LNG dual fuel would be the preferable approach as monofuel i don’t think would give another power. I knoe Tescos and Sainsbury run some LNG vehicles but very small percentage of their fleet
Can you get red gas tho
That will put a few off
Because after all the [zb] you still got to run at 40/60 diesel gas ratio
Gas ain t worth ■■■■■■■■
no they don’t, bking, can you come up with any proof to your “bs”?
milodon:
no they don’t, bking, can you come up with any proof to your “bs”?
So you got a nice 13 litre diesel piece o ■■■■
Then you pump gas in and reduce horse power by 15 % what a load if ■■■■■
And then you need diesel ignition to even get the gas to burn
A piece of crap.
obviously you have only heard of dual-fuel lng trucks, that use diesel as well, not pure lng trucks. I suggest you look into them if you want some information 
after some yoga, meditation or whatever else you need to learn to play nice with others 
milodon:
obviously you have only heard of dual-fuel lng trucks, that use diesel as well, not pure lng trucks. I suggest you look into them if you want some information
Yes real good idea Buy some nice big ECU and 6 X 100 quid spark plugs oh and lets not forget machining 3 mill off the pistons .cheap as chips!
I have no idea what you are talking about but merry christmas to the workshop (?), it might do good to get out for some fresh air once in a while 
Bking:
Yes real good idea Buy some nice big ECU and 6 X 100 quid spark plugs oh and lets not forget machining 3 mill off the pistons .cheap as chips!
I don’t pretend to understand the whole issue here Bking, but aren’t you speaking of retro-fit in your answer?
I’m just thinking that if the vehicle were designed to be LNG (only) right from the start of its life, then surely fitting spark plugs machining 3mm off the piston crowns wouldn’t be needed.
How would one calculate what the effect of taking 3mm of the present pistons would be?
Is there a formula that taking X off the pistons gives X lowering of compression, which takes bore and stroke into account?
This is an interesting topic, so I’d love to know the answer to that before Carryfast posts so much to it that it becomes too much for a simple soul such as myself to understand. 
Because its no zbing good,being promos by the flip flop brigade. 
dieseldave:
Bking:
Yes real good idea Buy some nice big ECU and 6 X 100 quid spark plugs oh and lets not forget machining 3 mill off the pistons .cheap as chips!I don’t pretend to understand the whole issue here Bking, but aren’t you speaking of retro-fit in your answer?
I’m just thinking that if the vehicle were designed to be LNG (only) right from the start of its life, then surely fitting spark plugs machining 3mm off the piston crowns wouldn’t be needed.
How would one calculate what the effect of taking 3mm of the present pistons would be?
Is there a formula that taking X off the pistons gives X lowering of compression, which takes bore and stroke into account?This is an interesting topic, so I’d love to know the answer to that before Carryfast posts so much to it that it becomes too much for a simple soul such as myself to understand.
You need torque to pull 40 tonnes. Now you can provide torque by RPM from a petrol/gas engine or you can pump torque from a long stroke slow revving diesel. Slow running,cool ,long stroke diesels, are the best for economy and longevity. Not the most elegant engine but good at what its designed for.
Bking:
dieseldave:
Bking:
Yes real good idea Buy some nice big ECU and 6 X 100 quid spark plugs oh and lets not forget machining 3 mill off the pistons .cheap as chips!I don’t pretend to understand the whole issue here Bking, but aren’t you speaking of retro-fit in your answer?
I’m just thinking that if the vehicle were designed to be LNG (only) right from the start of its life, then surely fitting spark plugs machining 3mm off the piston crowns wouldn’t be needed.
How would one calculate what the effect of taking 3mm of the present pistons would be?
Is there a formula that taking X off the pistons gives X lowering of compression, which takes bore and stroke into account?This is an interesting topic, so I’d love to know the answer to that before Carryfast posts so much to it that it becomes too much for a simple soul such as myself to understand.
You need torque to pull 40 tonnes. Now you can provide torque by RPM from a petrol/gas engine or you can pump torque from a long stroke slow revving diesel. Slow running,cool ,long stroke diesels, are the best for economy and longevity. Not the most elegant engine but good at what its designed for.
Hi Bking,
Understood and agreed about Diesels, but I wasn’t sure about LNG
LNG engines are really glorified petrol engines.
Nobody makes them ,as 14 litre petrols are a “bit thirsty” specially when your pulling a 30 tonne caravan.
So you get a 14 litre diesel reduce the compression ratio by cutting a few mill off the piston crown(easier than changing crank throw) and stops pre ignition. Fit a crank position sensor,air flow sensor,mapped ecu and spark plugs.
Most reduce turbo charging to keep the motor cool.
Big problem is that because of inertial mass,the engine still has the characteristics of a big diesel that is trying to give its best at low rpm on a fuel that is designed to run in high rpm engines.
Most spark ignition engines dont even start to produce any real torque before 2000 rpm.
Now you got some old slugger that peaks at 1700 trying to be a Porsche.
Thats why LNG dont work in a modified diesel
■■■■■■■■■■■■■■■■■■■■■■■■■■■■ … alk-around
This link goes to a 6 minute video explaining ■■■■■■■■ 12 litre CNG/LNG truck engine. Rated up to 400 bhp, 1450 Lb/ft torque, new 4 valve head for spark plugs and different piston crown. Wastegated turbo, of course.
■■■■■■■ have always had a 4 valve engine except for the B and C series
Whats “new” about a 4 valve head?
!4 litre big cams had 4 valves and I thought they were introduced in 1969
Sainsburys have been running a lot of LNG trucks, and not a spark plug or milled piston in sight!
(these still use a small amount of diesel however)