Why NGV

Why NGV

CGS is approved and authorized by ADNOC Distribution to perform NGV Operator Services. NGV is a Secure, Environment-Friendly and Cost Effective alternative fuel for vehicles.

NGV technology is playing a growing role in reducing global levels of air pollution. More than 22 million NGV vehicles are currently being run in more than 80 countries around the world. This number is set to rapidly increase. In the UAE there are already over 6500 NGV-converted vehicles on roads.

 

What is NGV

What is NGV

While the CNG used for NGV is a fossil fuel like Gasoline and Diesel, it is safer and cleaner and more cost-effective. The primary component is methane, comprising approximately 93% of the contents, along with ethane, propane, butane, carbon dioxide, nitrogen and other gases. NGV is compressed to a nominal pressure of 200 bar in order to maximise vehicle onboard storage capacity.  

NGV technology has been available on the market for many years. Some countries already have a significant number of enabled vehicles - currently, there are more than 22 million NGV vehicles in more than 80 countries.

NGV is currently used by taxis and government cars in the UAE as well as individual/ Private car owners. There is an approved government decree to convert 25% of government entity vehicles to NGV.

NGV Benefits

NGV Benefits

Natural Gas for Vehicles (NGV) is a safe, cost-effective and eco-friendly fuel alternative for vehicles.Vehicles running on petrol can be converted to bi-fuel: conversion does not take more than six hours and does not require any engine modification. After conversion, vehicles can run on both NGV and petrol which are stored in separate tanks.

There are many good reasons for vehicle owners to convert to NGV:

  • NGV is clean: Harmful vehicle emissions causing air pollution are significantly reduced when motorists switch to clean natural gas. Since it is gaseous in nature there is no possibility of spilling, which reduces impacts on soil or underground water. NGV is cleaner than petrol and can substantially reduce the production of harmful gases:
Emissions Emission Reduction %
Carbon Dioxide 20 – 30 %
Carbon monoxide 50 – 80 %
Nitrogen oxides 25 – 60 %
Non-methane hydrocarbon 50 – 75 %
  • NGV is safe: NGV’s properties make it a safer fuel. It is lighter than air, and hence rapidly disperses into the atmosphere in the event of leakage. It has a very specific fuel-to-air ignition ratio that minimises the potential for the flare-up. It also is neither toxic nor corrosive posing no health risks when handled. The storage cylinder used is stronger than a gasoline fuel tank and has been subjected to a number of tests for resistance heat and pressure extremes, gunfire, collisions and fire. NGV also has a narrow range of flammability making it much safer than other fuels.
  • NGV is economical: NGV has a lower fuel cost than petrol. With regards to maintenance, users will only require two types of services: an annual gas system test (visual inspection) and a 20,000km inspection (covered by 24 Months or 100,000km warranty).
  • NGV is convenient: The overall lifetime of vehicles increase when using NGV. Both fuel distribution and specific fuel consumption are more efficient when using the system. Engines run smoother and quieter with NGV and also have no problems at start-up.
  • Natural Gas for Vehicles (NGV) is a safe, cost-effective and eco-friendly fuel alternative for vehicles.Vehicles running on petrol can be converted to bi-fuel: conversion does not take more than six hours and does not require any engine modification. After conversion, vehicles can run on both NGV and petrol which are stored in separate tanks.

·         There are many good reasons for vehicle owners to convert to NGV:

Converting to NGV

Customers looking to convert their vehicle must contact on +971 55 212 6611 or visit any of our conversion centres to obtain information and start the process. We will then get the approval of ADNOC Distribution and confirm the NGV Conversion appointment.

Customers must provide the following documents for the conversion process:

Fleet / Commercial Customers Private Customers
Letter from the company signed by an authorised person Approval from the customer which can also be sent via email or fax
Trade License ID/passport copy with valid UAE residence visa
Melkiyas Melkiya
Bank Guarantee or LPO Melkiya
Contact Details for concerned person Contact Details for concerned person

Conversion kits are available for all vehicles with 4, 6 and 8 cylinders.

The conversion process takes approximately 4-6 hours. Vehicle petrol tanks will be retained and gas will be stored in an additional cylinder. This cylinder is typically installed in the vehicle’s trunk, or sometimes beneath the vehicle. 

The NGV stickers

In order to identify that a vehicle has been converted to NGV, three stickers will be placed:

  • Identification sticker: Identifies the vehicle that it has been converted and certified; Location: Front window and top passenger side.
  • Commercial sticker: Marketing the NGV business; location: Gasoline filling port.
  • Cylinder sticker: Identifies the cylinder re-inspection date; location: NGV Cylinder.

Using NGV

Below are some tips for using your NGV vehicle after conversion

  1. You can fuel your vehicles at any NGV service stations.
  2. An electronic switch on the dashboard permits a selection of either natural gas or gasoline. It also displays the quantity of the natural gas inside the cylinder by means of four green lights. When the last light blinks, drivers must refill.  Drivers are able to switch between natural gas to gasoline and vice versa while the car is in operation.

Your fuel consumption

Like any other fuel, consumption of natural gas depends on many parameters such as driving habits, weather conditions and the size of the engine. Since 1 cubic meter of NGV has slightly more energy than 1 litre of gasoline, consumption of the gas will be slightly lower than that of gasoline under the same operating conditions.    

Recommendations after conversion

  1. Ensure periodical maintenance of the vehicle’s air filter, ignition and cooling system.
  2. For any after-service, please visit CGS authorised conversion workshop.
  3. Keep a reasonable quantity of gasoline.

NGV Facts & Figures

  1. Countries with the highest usage rates of NGV in the world include China, Argentina and Pakistan.
  2. It was reported in 2015 that over 22 million vehicles run on natural gas with the number increasing every year. 
  3. Reputable manufacturers like Honda, Mercedes, Audi, Ford, Scania, and GM have manufactured NGV (OEM) dedicated vehicles/engines.
  4. There are more than 80 countries that use NGV.
  5. There are truck-transportable natural gas cylinders making CNG accessible and available in any required area that trucks can reach.
  6. According to the EPA (Environmental Protection Agency), NG is the one of the cleanest transportation fuels; Natural Gas not only produces less carbon dioxide, but also generates lower levels of carbon monoxide, non-methane organic gas and nitrogen oxides.
  7. NGV engines produce about 25% less carbon dioxide than gasoline and 35% less than diesel, making NG one of the best environmentally friendly fuels.
  8. Historically, NG prices have proven to be stable, while gasoline and diesel prices are unpredictable and may rise at any point in time. Thus better planning can be made for future costs with NGV due its price stability when compared to other fuels.
  9. NGV engines are less noisy than both petrol and diesel engines.
  10. NG is not a new fuel technology. NG has been used in many applications for over 60 years.
  11. Unlike gasoline, which spills and moves downwards creating a potential fire risk in the event of leakage, compressed natural gas rises and rapidly disperses in the air.
  12. In 2009 the biogas Audi A4 entered the record books by achieving 364.6 km/h, thus becoming the fastest NGV/CNG-driven car in the world.
  13. NGV/CNG requires a 600º C temperature for ignition while gasoline and liquefied petroleum gas ignite at 450º C. This is the reason why it is more unlikely that NGV will catch fire under normal circumstances.
  14. NGV/gasoline bi-fuel system increases a vehicle’s driving distance due to having two fuel tanks which can be used interchangeably.

Safety

Another benefit with natural gas is that in the event of a spill, natural gas dissipates in the environment while liquid fuels can contaminate our water sources and are very difficult to remediate. And in the event of a vehicle collision, this dissipation makes a safer site than if flammable liquid fuel was involved.

Furthermore, "CNG is a cleaner fuel with higher octane content. Hence, CNG does not affect the life of any engine component. Hence, "The life of an engine increases by using CNG. Lubricating oil life is extended considerably because CNG does not contaminate and dilute the crankcase oil. Due to the absence of any lead content, lead fouling of plugs is completely eliminated and plug life is greatly extended. Another aspect, which increases engine life, is that CNG enters the engine in the form of a gas whereas petrol or diesel enters in the form of spray or mist. This spray/mist washes down the lubricating oil from the piston ring area thereby increases the rate of depreciation of the engine. Since this is not the case when using CNG, the life of the engine is increased. On the whole, the maintenance costs are reduced and engine life is increased. More than 16Million CNG users around the world would confirm that.

Description

Unit

Petrol (Gasoline)

Diesel

LPG

CNG-NGV

Auto Ignition Temperature

°C

200

225

450

540

Flammability Limit

%

1.4-7.6

0.6-5.5

2.1-9.5

5.0-15.0

Flame Temperature

°C

1,977

2,054

1,990

1,790

Heat of Combustion HHV

MJ/m3

3.5 x 107

3.9 x 107

2.5 x 107

9.3 x 106

Heat of Combustion LHV

MJ/m3

3.2 x 107

3.6 x 107

2.3 x 107

8.3 x 106

Compression Ratio

CR:1

10 : 1

14-12 : 1

10.5-12.5 : 1

10.5-12.5 : 1

Combustion Properties of some Substances