Dieselgas V D-Gas

Submitted: Wednesday, Aug 29, 2007 at 18:02
ThreadID: 49125 Views:4611 Replies:4 FollowUps:0
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Can anyone explain the significance of gas entering before or after the turbo?
With these 2 systems is there any difference in power, torque, economy, motor longevity, etc?
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Reply By: Robin Miller - Wednesday, Aug 29, 2007 at 20:36

Wednesday, Aug 29, 2007 at 20:36
Not to many takers on this one Twinkles.

I don't know anything specific about the commercial systems but the basic thing to consider is that anything introduced into the engines intake displaces air (oxygen) and hence delivers less ultimate power.

I.e. when gas is introduced into the gas inlet you can never get as much power as when its introduced further down , with the ultimate being to direct inject liquid into combustion chamber.

So trick is with whatever system , to introduce the fuel as late as possible.


Robin Miller
AnswerID: 259445

Reply By: RFLundgren (WA) - Wednesday, Aug 29, 2007 at 21:33

Wednesday, Aug 29, 2007 at 21:33
Twinkles

I looked at both of these systems prior to getting my injection done. If you think about it logically if gas is injected before the turbo, then you are going to have a turbo full of gas. What happens if somthing in your turbo goes or casues a spark of some kind, not something I really care to think about of want to worry about happening.

Also gas is a drying agent, so over the course of time some parts that should be lubricated may become dry also causing issues.

The dieselgas australia system also requires tuning across the rev band using a laptop which to me is an inconvienence.

The D-Gas system is less complex. If you require more of less gas to be injected, then you just change the nozzle size. The gas is also injected after the turbo, thereby negating issues as mentioned above.

Personally I went with the D-Gas system and there is a definate increase in power across the whole range in the realm of 20% - 30% and some mannor of increased economy. As I have not had the system all that long I will reserve comment on the economy factor till a later date.

I have no affiliation with D-Gas, just a very happy customer.

Cheers

Richard

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AnswerID: 259464

Reply By: Oskar - Thursday, Aug 30, 2007 at 08:28

Thursday, Aug 30, 2007 at 08:28
I was always told that the vehicle with with "D-gas" will always out perform any other vehicle in any 4WD situation.
The reason .......?
"Dgas means".... Don't Give A Sh1t .... VROOM!!
Usually older, well-travelled trucks with dents and scratches already.
AnswerID: 259525

Reply By: blown4by - Friday, Aug 31, 2007 at 23:59

Friday, Aug 31, 2007 at 23:59
From my limited understanding the LPG which is mixed with air at the regulator and introduced into the inlet manifold actually ignites prior to the diesel/air mixture in the combustion chamber during the combustion cycle and in so doing causes far more complete combustion of the diesel/air mixture than would otherwise be the case resulting in smoother running, less diesel "rattle" at cold and low speeds, better economy & more power (due to full utilisation of the diesel/air charge) and cleaner running (due to lower concentration of contaminants in the lubricating oil)
AnswerID: 259816

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