How much is the conversion cost per truck?
How many KM the truck running per day?
How much money can save per truck?
How Long to recover the investment 3,6,9 or 18 months?

I want to Information of conversion of Diesel engine to CNG.If you help me in this purpose,then pleasure to you.

Some of the information I could readily share with you guys.

To covert Diesel to CNG Engine, following retrofit is required.

Spark plug in place of Injector and modify cylinder head to accomodate 12 mm spark plug.

Replace high pressure fuel line with High Tension Co-axial cables.

Repalce fuel pump with Spark Distributor with drive from Fuel pump drive gear.

High tension ignition coil to be connected betweeen the spark distributor and 12 volt battery.

Replace fuel filter with gas filter.

Add on carburetor on intake manifold and connect low pressure gas line to the gas carburetor of Impco make.

Use a butterfly valve to control fule air mixture going into the cylinders.

Use a two stage pressure regulation on CNG cylinders, the first one regulates to 1 bar from 100 bar and the second stage it controls to 150 mm water column.

1 Kg of CNG equivalent of 1 liter diesel.

Normally 12 to 15 CNG cylinders are mounted on a truck or city bus.

Answers to some of the questions:

One conversion kit normally costs ( additional)about 30 to 40 % of base engine cost.

One truck can operate around 300 Km per fill.

With use of high cost composite material CNG cylinders , this could be doubled.

Cost of CNG is around 50 to 60 % of cost of Diesel.

Payback period of CNG conversion is less than a year.

CNG cylinders are safer than gasoline or LPG.

CNG being ligher than air, even if leaked, goes up and unlike LPG does not Spread on ground surface.

CNG is still in gaseous form and safer than liquid fuels.

CNG burns only at a specifc air fuel ratio. It needs strong and high density current/energy to ignite lean mixtures.

Literally zero particulates with CNG, NOx and CO balance is sensitive to air fuel ratio.

Very less /marginal HC in emissions.

Need three way oxy cat for knocking down NOx and CO using a O2 sensor.

I thought I must share what ever little I know about CNG.

MABARA MPFI GAS SWITCH
CHENNAI

Mabara Bi-fuel switch is designed for cars with MPFI engine, which gives faster switching between petrol and LPG and takes care of all safety aspects for your car engine.

This electronic switch is powered by an 8-bit Microcontroller, which ensures fast switch over between petrol and gas with lot of safety logics. Multi color LED’s keep you inform about the mode of engine operation either in petrol or LPG and gas level indication for the gas tank. Engine speed and the driver request switch are the primary inputs to this electronic switch also the driver can operate the car in the following modes:

1. Petrol start petrol run:
This mode can be selected by keeping the driver request (on/off) switch in petrol side. This will allow the car to run always in petrol and the gas indications will be disabled. A led indicator near the switch shows that the engine is in petrol mode.

2. Petrol start gas run:
Gas mode of operation is more economic and this could be selected by keeping the switch in gas side. We can find the following indications:

A) As soon we put the ignition key, the petrol indicator will glow and the gas indicator starts blinking. The reason for this, the engine is still in petrol mode for safety aspects and the blinking indicates that you have not yet cranked the engine. As per standard the gas valves must be closed if the engine is not running.
B) Once you crank the engine, the gas led will start glowing and the petrol led will be off. Now the car starts running in Gas. The 5 level led will indicate gas level.
3. Gas start Gas run:
This mode is also called as emergency mode and could be used only when no petrol is there in the tank. So we can start and run the engine in gas. This mode can be selected by keeping the switch at center position.

Gas level Indication: A unique feature of the Mabara switch is Gas level indicator, which is more accurate to gas level in tank and led blinking is a special feature. Red led blinking indicates the reserve state of gas and its safer too fill up gas in the near by Bunk.

We always manufacturing
Vacuum car switch
mpfi switch
Gas level sensor
mpfi injector model switch with level indicator
Vacuum switch with level indicator

We are developing
Lambda controller
Emulator

Dear Sir,

Mabara manufacturing company is designing, developing various industrial and consumer item in India. We have Good experience in wide range of industrial applications in control units, Telemetric, RF communication interface products, Computer interface controllers, automotive products and medical applications.

We give complete embedded solutions to elevator/Lift world like Lift Controllers, Voice annunciation, Scrolling displays. We do drive control and our own PLC is used for industrial automation also. Ultrasonic medical cleaner, Mini electronic generator, Ignition product family, PLC’s, RF circuits are few of our product varieties.

Apart form the above we are accepting and fulfilling customization with our own expense of initial development and final product till will achieve your greatest satisfaction.

We take up all type of your Embedded and electronics products, attractive and cost effective solutions for your difficulties in production with various high end controllers like SIEMENS, MICROCHIP, and MOTOROLA etc based on the application.

We are requesting you to reach us in the following mail-ID or phone for your immediate requirement on Industrial electronics.

Email: mabara_india@yahoo.com
mathi_maruthi@yahoo.com
www.mabara.com
Thank you

MABARA MANUFACTURING COMPANY,
8/100 THIRUVALLUVARPURAM,
1 ST STREET,
CHOOLAIMEDU,
CHENNAI-600 094
TAMILNADU
INDIA

Phone: 91+44+23744070
91+44+23743643
Fax: 91+44+52082542
Cell: 9381050607

Please give me the detail information about hte conversion of Diesel Engine to CNG it cost efficacy etc in Pakisan. Urgently. Thanks
with regards

i am a student of mechanical engineering and have started a final year project on "conversion of diesel engine to cng". i will really thankful if anybody like to help me in this project.plz do let me know which engine should i chose and how should i start.
thanks

This is the Interim Evaluation Results for New York City Transit Hybrid and CNG Transit Buses which is done by a national laboratory of the U.S. Department of Energy and Office of Energy Efficiency & Renewable Energy. There have done a very interesting study between CNG Buses and Diesel-Electric Hybrid Buese
Read them at http://www.nrel.gov/docs/fy06osti/38843.pdf

I hope this answer some of the questions posted here.

1 kg LPG = ~1.9 liters LPG

hi i m working on a project to convert diesel ingines into cng. can anybody suggest me the idea to convert a two stroke diesel engine to cng mode.

Hi,

I am currently live in Canada and wonder is there any licenced or patented conversion kit to convert diesel engine to CNG?

Is there any danger for passengers in converted cars?

Mainly I am about to make some search for trading these conversion kits, I am open to proposals..

Thanks & regards
Selvi

Hi!
I am poonam pal,working on a project title-"Biogas an alternative fuel for diesel engine".Till now we performed testing on diesel engine by using diesel & biogas.we tried to run the diesel engine on 20% diesel & 80% biogas, but not getting satisfactory results.we want to run the diesel engine on 100% biogas. so please help us.
we are three in a group working on this project. we are final year mechanical engineering students. As in final year we have to do a project, so we selected this topic. so please help us to do the project successfully & sugest us the right direction.
Thanking you!
poonam pal
BE(Mech)
COE Kpg,
pune university

dear sir
i would like to know unit convert as under kindly guide me about the same.

1. how many kg lpg gas for 1 liter lpg gas (auto gas & domestic use.

if there is such unit converters available lem me send through my email as above