Team-BHP - CNG vs LPG Comparision

Quote:

Originally Posted by wolfinstein (Post 553397)

Its more or less around a Ltr ( Rounded)

It is not !!

I don't think the wiki answers are true in this context. Please double check. AFAIK, in LPG terms, 1 kg is at least 1.45 litres if not more. :)

Quote:

Originally Posted by mail4ajo (Post 407827)

This is the closed loop system that dealer is mentioning. Regular kits are just openloop system which can damage the cat. BRC has the "just system" which cost Rs. 30000+. This will ensure that the car runs almost like it does on Petrol.

However a simple option is available to add the ECU, Lambda sensor and Stepper motor and convert to closed loop. Cost an additional Rs 6000.

Interesting thread here. You mention that closed loop is 6k more which seems the norm. But my mechanic told me closed loop requires the following over open loop:
1) Processor Unit (I am guessing ECU)
2) Stepper motor
3) Wiring harness

He said that they use the same 02 sensor as petrol (same as lambda). But you mention that there is a seperate Lambda sensor... I am lose, can you ellaborate a lil.

Quote:

Originally Posted by aseem (Post 554726)

He said that they use the same 02 sensor as petrol (same as lambda). But you mention that there is a seperate Lambda sensor... I am lose, can you ellaborate a lil.

I am sorry if I said separate 02 sensor. The readings are from the same OE sensors

Quote:

Originally Posted by musicmanaman (Post 553802)

Thanks for the above responces, got to know a lot from them.
Could you please let me know how satisfied you are with the LPG conversion, I have been reading posts by you and know that you have a closed loop LPG KIT. Have you benified from the lower cost of LPG?
Which tank do you have on your Alto, is it the 35 or 60?

I am not very pleased with the LPG conversion. I did it because I could not afford a diesel car at that time and the only option was Indica. I will switch to a diesel car in 1-2 years from now.
The closed loop has some issues as it has not been set up properly. I am currently running on open loop by disconnecting the stepper motor.
I have the 35L torodial tank and need to carry the spare wheel in the boot. Check the WagonR Duo website to see the images. Almost similar.

Quote:

Originally Posted by esteem_lover (Post 555773)

Ajo, I am sad that you are not pleased with your LPG conversion. Could you please elaborate why ??

I think we spoke on this earlier. I certainly appreciate the concept of LPG conversion and the associated savings.

The displeasure is due to these factors:
1. Acute reduction in pickup on LPG and AC running in an already underpowered car :Frustrati
2. Premature wear of spark plugs
3. Frequent cleaning of Airfilter required
4. Regular tuning required for setting the right LPG flow in open loop.
5. Finding a good tuner is a pain
6. Long queues at filling stations of late since all autos in chennai have to be converted to LPG by Jan 2008.
7. Not very important, but the loss of boot space since I have to carry the spare wheel around in the boot.

Inspite of all this, I enjoy the savings and will stick to current setup for some time. But a diesel would have excited me if I had the budget and the DDiS was around.

Hi, Ajo,

I'am buying an Ikon from my bro. I want to install LPG on that. Can you sugest:
1) Which tank capacity will be suitable?
2) What type of kit is best suited (opn loop/closed loop)?
3) What is the make (RTO approved)?
4) What could be the cost (approx)?

@arunsounder:
5) Any contacts in Bangalore who will help me out in this??
6) Can you PM me the details of installer ?
Thanks in advance.........

Note comments in bold. Do check with local members for installers

Quote:

Originally Posted by snaronikar (Post 560856)

I'am buying an Ikon from my bro. I want to install LPG on that. Can you sugest:
1) Which tank capacity will be suitable?
On Ikon, you can install the 65L tank, but go for the torodial if you want to save space.
2) What type of kit is best suited (opn loop/closed loop)?
Would suggest the closed loop if you want to save your CAT and also avoid manual gas tuning. Sequential type gives petrol like performace, cost is higher.
3) What is the make (RTO approved)?
Check with RTO because the approval varies with car model
4) What could be the cost (approx)?
Max 20K for open and about 26K for closed, 45k upwards for sequential.

i agree with mail4ajo in many of his points. this is primarily because lpg systems in india which are in use are those already history in developed countries. its pure cot of newer installations and ignorance which has downgraded performance in lpg or cng cars in india.
from my experiences and talks to fellow bhpns and others i found:
1. a two liter engine is required for lpg conversion
2. open loop and closed loop are only compatable with carb engine.
3. using open loop or closed loop will damage engine if detonation keeps occuring.
3. for mpfi basic sequential injection is must.sequential injection provides better mileage than petrol since is octane rating is 100. no detonation can occur. this also requires lpg pump in tank to give positive feed.
4. get good installer who hhas good contacts with manufacturer for support. use guys trainned from company for installation.
5. mixer used in all setup is mostly turned around by the turner next door which is not good.
6. select tank size as per lpg consumption.
7. use plugs which can take more heat than standard ones.
8. keep air filter clean.
my next car will be a crdi diesel

hi i have a few questions in regards to CNG as i do not know anything in this department.i keep on getting mixed answers from whoever i ask that i am really not sure what to do?

(1) is there a kit that i can fit on the sonata gold 2.7 automatic?

(2) does it cause damage to the V6 engine?

(3) is it really wort it? my daily drive is 30 km per day.

(4) Not that important but what is the % of loss in the pick up?( been told that you cant over take with gas unless you step on the pedal all the way)

really sorry to bother you'll with this!
ancer

Quote:

Originally Posted by snaronikar (Post 560856)

5) Any contacts in Bangalore who will help me out in this??
6) Can you PM me the details of installer ?

Snaronikar,
Do talk to the STAR Gas Guys that will give you a good idea.But i did hear that Ikon's RoCAM engine doesnt take the normal kit, but need one of those high end ones. Do talk to him, he should clear most of your doubts.

STAR GAS Dealer << Star Gas - Order Information >>
AARDING (INDIA) PVT LTD.
# 218, H.S.R. Layout,
Ring Road, Agara
Bangalore - 560 102
Karnataka
India.
Office : 91-80-25632070
91-80-25632101/102
Mobile : 91- 9844121246
Fax : 91-80-25632001
Email : aarding@vsnl.com

I think they will direct you to a guy who has his shop on that intermediate ring road, near Ejjipura junction. I have seen a couple of OHCs and Corsa's here, so they definitely tune cars other than the 800, zen, santro lot.

And if any CARB vehicle owners want to convert / Tune then I can vouch for Jilu AutoGas guys. They are next to that Ali's Garage in Koramangala. Its not that they dont do MPFI ones, but i have seem more Carb customers around when I go for my annual kit check up.

Jilu Autogas
30/1, 4th Block, 15th Main
Koramangala,
Bangalore 560034
Phone: (80) 65701577