Cng fuel what is it

However, the NO x and soot emissions of CNG powered vehicles are substantially lower than from diesel powered vehicles.

Thus for city busses, often diesel powered, the benefits of CNG lay in the improvement of the local air quality and not in the CO 2 emission reduction. The introduction of CNG in the transport sector provides a good stimulus for biogas. Natural gas, a fossil fuel comprised mostly of methane, is one of the cleanest burning alternative fuels. It can be used in the form of compressed natural gas CNG to fuel passenger cars and city busses or in the form of liquefied natural gas LNG to fuel heavy duty trucks.

There are both dedicated natural gas vehicles NGVs which run exclusively on natural gas, and bi-fuel vehicles, which have two separate fueling systems enabling the car to run either on natural gas or on a conventional fuel, i. Most current CNG passenger cars are bi fuel vehicles.

For heavy duty application Liquefied Natural Gas is the preferred option, see the topic Liquefied Compressed Natural Gas in trucks and cars. It is possible to retrofit a gasoline powered vehicle with a natural gas tank.

However, these vehicles are in general not as fuel efficient as OEM natural gas powered vehicles. In addition, retrofitted vehicles have higher emissions of NOx and soot.

Compressed natural gas is also ideally suited for city busses. Technically, natural gas vehicles function very similarly to gasoline-powered vehicles with spark-ignited engines.

The natural gas is stored in high-pressure fuel cylinders on board of the vehicle. US DOE, The use of natural gas in transport is especially attractive in countries with significant own gas reserves. Modern CNG vehicles are just as reliable as gasoline powered vehicles. Natural gas powered vehicles need extra space for fuel storage. In most modern CNG powered passenger cars the spare tire has been removed to fit the fuel tank.

The driving range of CNG passenger cars is limited within the range of to kilometers. Therefore use of CNG is mainly limited to passenger cars and city busses. Improvement of the vehicle range can be obtained with direct injection technology, taking advantage of the high octane number of natural gas, turbo charging and hybridization of the vehicle IGI, These technological advances will also reduce the emission of CO 2.

Despite not being readily available in most U. Existing gasoline tanks could be outfitted or repurposed to support the storage and pumping of biodiesel fuels. Biodiesel has a considerably higher flashpoint than traditional gasoline. This means that biodiesel is considerably less dangerous to transport and handle. It is also easier to clean than petroleum products and less hazardous to wildlife. One downside to biodiesel is that it begins to solidify at low temperatures.

To make biodiesel viable in cold-weather environments a special fuel system would need to be created to help insulate. Biodiesel does pose one very unique problem.

Since the raw materials used to create it are also food sources, an increase in production of these food sources for use in the making of biodiesel will decrease the availability of that food product for use as food.

Growing and processing these plants also requires a lot of energy , some of which comes from coal power, which leads many people to question if this form of fuel is actually more efficient and eco-friendly.

It is an environmentally clean alternative fuel, as its combustion process emits a lower percentage of greenhouse gases when compared to other fuels. CNG has a high octane rating that provides a high compression ratio and is adaptable to modern engines. The combustion of CNG produces less carbon monoxide, hydrocarbons and oxides of nitrogen. Overall, this type of gas can help in reducing pollution, as it is a clean burning fuel. Each of these types of fuels have both similarities and differences.

LPG fuel , or liquefied petroleum gas, is a liquefied gas and is a byproduct derived while extracting crude petroleum. LPG weighs twice as much as air and is colorless, odorless and is a highly flammable explosive gas. It is comprised of propane mixed with butane, traces of propylene and butylene. One of the advantages of LPG is that it emits less hydrocarbons, carbon monoxide and oxides of nitrogen. It also has a high octane rating and increases engine longevity.

The fuel weight-to-mileage of LPG is equal to that of gasoline-operated vehicles. LNG fuel , or liquefied natural gas, is a natural gas converted to liquid form through liquefaction. During this process, natural gas is cooled at low temperatures until it turns into a liquid, and the volume of gas is reduced by approximately times. It is non-toxic and non-corrosive, resulting in less pollution. While liquefied natural gas and compressed natural gas are similar, their delivery and storage methods are different.

LNG is frozen in order to turn it into liquid form, whereas CNG is pressurized to the point where it is very compact. LNG takes up less storage space on a vehicle than CNG, and it also offers an energy density that can be compared to diesel fuel. This makes it a common choice among many long-haul trucking companies. CNG is also very light, so if there is a leak, it will dissipate. It has an unlimited hold time, so even if it goes unused, there is no fuel loss.

CNG is typically used as a substitute for gasoline in automobiles, while LPG is often used in the industrial, refrigeration, agricultural and catering industries.

It is also used to power cooking and heating in homes, and like CNG, can be used as automobile fuel. CNG releases less greenhouse gas, while LPG releases carbon dioxide, but is still cleaner than gasoline. Knowing about the different types of alternative fuels can benefit you greatly in your diesel career. There is a growing demand for technicians who are able to work on applications that run on these fuels, but not enough candidates who have the right skills.

This skills gap is opening the door to exciting opportunities for those who are preparing for careers in the diesel industry. Construction equipment, trucks, agricultural equipment and many other applications have already made the switch to natural gas, which means a new generation of technicians will be needed to keep them up and running.

Technicians who possess knowledge of alternative fuels often work for transit authorities, an engine manufacturer or dealer, and in the power generation industry. Today, nearly every manufacturer makes something that runs on natural gas. No matter where you go to work, you will most likely be exposed to working with these types of fuels—especially as their popularity grows. In addition to learning concepts like truck preventive maintenance, diesel fuel systems and transportation refrigeration, your coursework will cover the different types of alternative fuels and the applications that run on them.

Graduates are well prepared to complete ASE examinations and can substitute their training for one of the two years of work experience required to become ASE certified. As a UTI student, you could also elevate your training with manufacturer-specific education.

Created in conjunction with AGCO Corporation, this program can give you hands-on training that can help you to start your career as an agricultural service technician. If pursuing a career in the diesel industry is a passion of yours, UTI is a good place to complete your training. To learn more, visit our program page and request information to get in touch with an Admissions Representative.

Following a maintenance checklist is essential for maintaining your diesel truck. Thinking about pursuing a career in the diesel industry? Click here to learn more about light-duty vs. Want to find out what makes a gas engine and a diesel engine unique?

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