THE OFFICIAL **ALL THINGS CNG** THREAD

[sMASH]

Cng cuts ur fuel bill to third. The hybrid, is economic because with all ice's the alternator generates more electricity than it needs. The alternator is efficient at it too. So when the bacteria are charged, with current it would have been generating anyways, it Can switch off when used the energy it already stored.


It is a good concept. As most things that were belt driven in csrs are increasingly being motor driven cause its more efficient means of energy transfer . The two main advantages are that it doesn't have to depend on the engine performance to dictate How it performs, as it uses what ever the battery stores, and that the engine isn't bogged down usually by driving so much load on the belts.

[rebound]

You can order a Benz with CNG stock..

[STORM1234]

does anyone know the exact location of sunil the cng installer in rock road penal? or a contact number?

[Ted_v2]

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[aidan]

If I buy a cng equipped vehicle roro, would I still be eligible for the tax break?

Where u getting that?

Have it installed before shipping

[STORM1234]

np cng station has re-opened in chaguanas about a week now.

[jhonnieblue]

Guys just asking for people long term experience with CNG on newer vehicles. Have a new Sportage and won a cng kit and just wondering how effective it works.
I heard the retrofits to the Lancers in ngc fleet gives a lot of trouble

[Ted_v2]

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[*$kїđž!™]

I did see a cng sportero yesterday ....i think thats awesome....diesel.and cng...no fuel.cost whatsoever.!!!

[jhonnieblue]

Who does the more professional installs, dumore or burmac?

[Ted_v2]

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[jhonnieblue]

Any particular reason why? I've seen burmac working with mostly older vehicles. But fromma professional point of view what's the difference. Also any difference with the kits being used?

[nervewrecker]

Dumore By farrr.

X2, dumore ftw.

Dumore sent their techs to train and maintain professionality.

[nervewrecker]

The city looks like a good buy because of the cng...the car really not all.that but the cng part is the seller....wonder if civics would come with cng?

Doesnt look like much but one was dynoed at approx 100hp.
Suspension can take real jamming.
Its not the best but I believe it can more than do the job.
One with a gear box and some sound proofing for road noise would make it a nice car.

[infinite_RPM]

Anyone locally doing installs for turbo cars? Cause I'm wondering if a turbo will exceed the limit of a normal CNG kit and run lean..

[sMASH]

The dumore guy said it can be installed on a turbo vehicle. As u deduced it will need s lot more positive pressure to inject into the manifold.
The kit dumore uses is quite modern, and I suspect its mapping will cause it to switch back to gasoline before it leans out. The downfall to that is with a standard tank size, u would not get the range as a n/a vehicle becuse it should stop being useable at the lower tank pressures.

[infinite_RPM]

If it has a switching mechanism then it should be ok..my car turbo but I don't regularly drive past 3krpm.. the car has to be switched off to switch fuel?

[sMASH]

Negative. The ecu handles Every thing. It senses the pressures and switches back to gasoline. U can manually switch the system on or off as u desire, but if it doesn't have its own ecu conditions satisfied it will not allow the system to go online

Also, there are two conditions that needs to be satisfied for the cng system to be online. The first is engine temp. When it reaches a set temp, u hear the cng solenoid energize, and u see the display light up. Just after th3 cold engine temp light goes off, u hear the cng solenoid energize and the switch lights up. But it is still on gas, just ready and set.
After that, it needs to see an rpm of about 1000(or so) and then it switch over to cng exclusively. When it does, u see the light on th3 switch indicating its on cng.

After that its like driving a normal car, only a lil more dead.

But if I want to buss speed, I merely switch off the cng which is quite seamless.

[adnj]

The dumore guy said it can be installed on a turbo vehicle. As u deduced it will need s lot more positive pressure to inject into the manifold.
...The downfall to that is with a standard tank size, u would not get the range as a n/a vehicle becuse it should stop being useable at the lower tank pressures.

Turbochargers boost the intake pressure by less than 10 psi (typical). A CNG tank has an operating pressure up to 3600 psi. The problem is in lowering the pressure of natural gas, not increasing it.

When the pressure is lowered, the gas temperature is lowered also. This makes natural gas difficult to burn without a heat exchanger.

In fact, a properly tuned turbo engine has lower emissions than a comparable normally aspirated engine.

[sMASH]

Is that 3000 psi sustained till the very last molecule is delivered?

Wehn the pressure is lowered the Temps drop off, but not that much.

U ever empty a 100 lb cylinder and see what Temps u get?
U know what Temps too low for CH4 to be ignited?

[adnj]

Is that 3000 psi sustained till the very last molecule is delivered?

Wehn the pressure is lowered the Temps drop off, but not that much.

U ever empty a 100 lb cylinder and see what Temps u get?
U know what Temps too low for CH4 to be ignited?

Are you talking about a 100 lb equivalence CNG tank or LPG?

100 lb tanks are LPG or "cooking gas" (butane/propane mix stored as a liquid) with a working pressure of around 130 psi that fluctuates depending on ambient temperatures.

CNG (methane stored at high pressure) is stored more like air in a scuba tank and is usually not taken below 100PSI. It has different chemical properties and ignites at a temperature about 100°C higher than LPG. IIRC it's about 580°C

There are LPG fueled engines. They usually do not have problems with gas temperatures except in cold winter climates.

There is a lot of information on the web about lines icing or freezing during refill and burn due to constrictions. You can also see graphs on the portable tank temperature increases during fill.

Take a look at the Gay-Lussac's Pressure Temperature Law to get a feel for how temperature and pressure are related.

[sMASH]

From experience, as the pressure on the tank goes towards the end, the car starts to move dead. The tyranny Down shifts to maintain torque.

Mathematically the tank has higher pressure than the I take manifold bit in actuality because the pressures going closer to get her, the forward flow for cng isnt as easy to maintain as before.

From experience in those giant plants u see on ot Lisas, it's very difficult to maintain forward flow when two streams are within 10% difference in pressures.

Usually the cng Guage is right to the bottom when refilling. The spring rate utilized to operate for the full tank gets kinda lazy to operate at the lower tank pressures. From industrial process experience and actual cng operating experience.






If the cng system gets muddy to operate at the lower tank pressures, with a manifold vacuum, I would extrapolate that a manifold under positive pressure would be intolerable for the ecu.

[sMASH]

The temp drop due to depressuring isn't as much as an issue here. The tank sweats, feels cool to the touch, I woukd guess just under 20c .

[Ted_v2]

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[sMASH]

Damn.. That's why I can't get a 20k service.

[SANAV]

We Install Brand new CNG kits in almost any vehicle and the price is less than the bigger companies.
We have done Corollas, AD wagons, Wingroad, C25 Serena, Almera, B15, Pickups. maxi Taxi- Diesel, K2700 diesel.... 60, 70 and 90 liter tanks available.
488- 6389

[nervewrecker]

We Install Brand new CNG kits in almost any vehicle and the price is less than the bigger companies.
We have done Corollas, AD wagons, Wingroad, C25 Serena, Almera, B15, Pickups. maxi Taxi- Diesel, K2700 diesel.... 60, 70 and 90 liter tanks available.
488- 6389

Mhm hmm?
Location?

[mazdatt]

Is CNG subsidized at the cost of TT$1/litre? If it is, what is the market rate? What is point of government incentivizing motorist to move to another subsidized fuel? Won't we end up in same place we are right now with the liquid fuels?

[vaiostation]

^^^ Cause de government invest a ton of money in the infrastructure since manning days and they don't want to look like some fools, even though they pushing Outdated technology. That's why they ain't pushing electrical charging stations at regular gas stations. Plus hadda give de financiers time to sell they old stock.


It like they selling VHS tapes when the rest of the world moving to digital Distribution.

[mazdatt]

Based US pricing Gasoline is $2.88/gallon and CNG is $2.22/GGE so CNG is most likely heavily subsidized here.

If gasoline is $4.97/litre then CNG should be around $3.8/litre

From experience with a hybrid (Ioniq) I was able to use 50% less gas so that might be a better investment until electric cars are more affordable.

Source: https://www.afdc.energy.gov/fuels/prices.html