Is this right?
LPG and LNG have less BTU than petrol, how can it generate more heat?
Does it combust more completely?
Or are you saying that the cooling effect of injecting petrol more than makes up the difference.
Is this right?
LPG and LNG have less BTU than petrol, how can it generate more heat?
Does it combust more completely?
Or are you saying that the cooling effect of injecting petrol more than makes up the difference.
I am not going to get into a deep discussion concerning the pros and cons of LPG. Suffice it to say; yes it does burn slightly hotter than petrol, but I have yet to see any engine, especialy modern high compression engines, suffer any failures because of it. LPG also burns slower than petrol and therefore the engine ignition needs to be advanced to compensate. It also burns cleaner than petrol, which will tend to enhance engine life and lubricating oil condition.
There are many other considerations that should be on a thread of its own, as the OP question has nothing to do with the pros and cons of LPG.
May you be in heaven half an hour before the devil know`s you`re dead!
Is this right?
LPG and LNG have less BTU than petrol, how can it generate more heat?
Does it combust more completely?
Or are you saying that the cooling effect of injecting petrol more than makes up the difference.
Nereus wrote:There are many other considerations that should be on a thread of its own, as the OP question has nothing to do with the pros and cons of LPG.
I agree. My choice of not using LPG is a personal one, as there are more cons for me. It could be different for someone with different set of priorities.
My FIL is thinking about converting his Camry. We did some quick calculation using his figures.
A = Cost of gas conversion = Baht 35,000
B = Loss in car value due to conversion = Baht 200,000
C = Baht per litre of petrol = Baht 36.30
D = Baht per litre of gas = Baht 14
E = How many miles per litre = 10Km per litre petrol, 7Km per litre gas.
The results were FIL will save 7.33 Baht per Km to convert from petrol to gas. To recover the 235,000 baht cost of conversion plus vehicle depreciation he will need to drive 32,045 Km before he makes profit.
Yes, I think the economics of the thing come down pretty much to the mileage that you're doing, virtually all of the commercial taxi/llimo/minivans seem to use it but they're perhaps going to Bangkok and back a couple of times a day so 7 bt/km is obviously well worth the cost of any depreciation. (I can imagine that most minivans never survive long enough to be resold anyway.)
Ummm. Thanks all for the input, reliability is a must, the car will only be used locally and not cover a great mileage annually, but I intend on keeping the car forever, mind I will probably pack up before it does.
ken.p wrote:Ummm. Thanks all for the input, reliability is a must, the car will only be used locally and not cover a great mileage annually, but I intend on keeping the car forever, mind I will probably pack up before it does.
Ken.
Ken,
if you do low mileage and want reliability, forget about the LPG installation.
(I'll assume you've read the posted link? There's a clickable link in there that shows you what cars are not suitable for retrofitting with LPG, comes from a major supplier of these kits)
My two cents worth.
In my Honda Jazz I am averaging over all driving 15.5-16 kpl on Gasahol 91. Would be higher if on Regular Gas but cost differential due to fuel taxes is greater than savings. This car advertises 13.2 kpl which is considerably less than what I am getting in real driving. You can get good kpl if you drive right without the expense of conversion to CNG or LPG.
