While Cummins Westport's business does not include supplying fuel system components, or building
infrastructure, we recognize that customers often need information on these topics. This section
provides some basic information as well as links to companies that specialize in these areas.
Fuel for natural gas vehicles is stored on the vehicle as a liquid (LNG)
or as a gas (CNG) and how the fuel is stored is not a factor for
Cummins Westport natural gas engines. What is important is that the fuel must be supplied to the
engine in gaseous form at specified pressure and temperature under rated conditions. For example,
the Cummins Westport ISL G requires that fuel be supplied to the
engine from 70–150 pounds per square inch (psi) (483–1,034 kPa) and from -40 °F to 200 °F (-40 °C to
93 °C)
The kind of vehicle fuel storage chosen depends on a variety of factors, including the availability
of CNG or LNG, size and design of the vehicle chassis, daily mileage requirements for the vehicle
application, and refueling station availability.
Fuel tanks can be mounted on the vehicle in different locations, depending on the design of the vehicle.
Some examples would be: on roof of a transit bus, behind the cab or on the vehicle frame of a truck,
or on the body of a refuse vehicle.
- A typical CNG alternative fuel system is comprised of tank storage, a fuel fill system,
engine compartment components, fuel lines, regulators, and a high pressure fill system.
CNG is stored at pressures up to 3,600 psi. Fuel lines are connected to a pressure regulator
that reduces pressure to engine, where a second regulator controls the engine fuel requirements.
- An LNG fuel system is a low pressure system designed for normal operating pressure of 230 psi.
Fuel lines are fully annealed high-quality stainless steel hydraulic tubing type 304 or 316 seamless
stainless steel. When LNG needs to be converted for use, it's drawn from the tank, run through
a vaporizer, "warmed" back into gas, and supplied to the engine at the required pressure.
- Vehicles using natural gas may also feature a methane detection system with automatic shutdown
in the case of leaks. See the alternative fuels page for information
on natural gas safety.
Natural gas vehicle fuel storage systems are installed in a variety of ways. In most cases, original
equipment manufacturers (OEMs) will install the fuel storage system at their factory. In other cases,
it is installed at a different location, such as a bodybuilder (i.e. refuse) as the vehicle is being
manufactured to the customer's specifications.
Natural gas vehicles can be refueled at dispensers, similar to those designed for diesel or gasoline
vehicles. A typical CNG station would include a compressor, a gas dryer, storage vessels, dispensers
and underground piping. For some fleets that are parked overnight, a time fill CNG station is used
where the vehicles are "plugged in" to a network of hoses and filled overnight. A typical LNG station
would include LNG storage, a pump/dispenser, and underground piping. The fuel is dispensed as a liquid
into vehicle storage tanks similar to conventional liquid fuels.
There are many companies that provide fueling stations, fuel systems, and natural gas tanks. See the
links below for more information.
This is not a comprehensive list. This list does not represent any recommendation or endorsement
by Cummins Westport of any of the organizations listed. Cummins Westport accepts no liability or
responsibility for the use of any component or service from any supplier listed.
Fuel Station ProvidersAdvance Fuel Systems Corp.
AFSC Offers a complete line of products to satisfy all requirements for the compression of natural gas and NGV fueling solutions. These products are backed by the most prominent companies in the industry on a global level and have been acknowledged for their quality and safety levels with the most important local and international certifications.
Air & Gas Technologies, Inc.
Air & Gas Technologies provides sales, service, parts and installations to various compressor markets throughout the Tri-State area.
ANGI International
Since 1983, ANGI International has grown to be one of the world’s leaders for supplying of Compressed Natural Gas refueling equipment in the CNG Industry. A specialized team of sales and engineering experts work with each customer to analyze and define their fueling needs, prepare sites and coordinate compliance to standards and codes.
Applied LNG Technologies
Applied LNG Technology (ALT) markets and produces liquefied natural gas (LNG) to the western and southwestern United States from multiple facilities. ALT also provides LNG and CNG product and delivery systems, and executes turnkey fuel solutions that include equipment leasing, station installations, safety and training, natural gas production, low BTU gas processing, temporary fueling stations, and LNG and CNG consulting services.
Clean Energy Fuels
Clean Energy is the leading provider of natural gas (CNG and LNG) for transportation in North America. It has a broad customer base in the refuse, transit, ports, shuttle, taxi, trucking, airport and municipal fleet markets, fueling more than 17,200 vehicles daily at over 184 strategic locations across the United States and Canada.
CNGas Group
CNGas Group specializes in the marketing, design, building and maintenance of alternative fueling stations, providing a complete solution for the CNG industry, including sales of compression equipment, spare parts and completes solutions to customers purchasing outright or upgrading existing stations.
Cryostar USA
The Cryostar vehicle filling station designs are based on significant experience in the natural gas (Turbines, compressors, pumps) and hydrogen (Filling stations, pumps) market, ensuring that customers receive state of the art solutions that meet their specific demands.
Gas Equipment Systems Inc. (GESI)
Gas Equipment Systems Inc. is a Licensed California Engineering Contractor and Certified by the Texas Railroad Commission for CNG fuel station construction and maintenance of CNG/LNG/H2 Natural Gas Vehicle fueling stations, both large and small during the past nine years.
IMW
IMW is a leading supplier of Compressed Natural Gas (CNG) equipment for vehicle fueling and industrial applications. Our products include compressors, dispensers, storage systems, CNG parts and technical services.
Kraus GLobal
With more than 20 years of experience and over 3500 CNG dispensers in operation worldwide, our team of engineers have earned a reputation for developing reliable fast-fill alternative fuels dispensers.
NexGen Fueling
NexGen Fueling offers a wide variety of stations, from small temporary stations to large custom stations, that provide both CNG and LNG dispensing for upwards of 200 vehicles. The stations are designed with a modular approach so that components can be quickly installed and serviced, and most of the stations are designed to be easily upgraded in the future.
Southeast LNG Distribution Company
Southeast LNG will work with you to develop the alternative transportation fueling solution that best meets your needs. We custom design and build the fueling infrastructure that properly aligns with your business, delivering exceptional convenience and cost savings. Our team of experts is well-versed in engineering design, construction management, government funding, fuel distribution and supply management. We also have reached out to the original equipment manufacturers and local truck distribution centers to offer our clients the option of vehicle support from start to finish.
Trillium
Trillium USA makes CNG simple with a turnkey model for installing CNG fueling infrastructure. Our services include designing, installing, and operating a fuel system that is guaranteed to meet our customers’ needs.
Fuel System and Tank IntegratorsEnviromech
Enviromech Industries (EMI) is the leading provider of advanced alternative fuel systems and propulsion technologies used on a wide variety of vehicles including heavy trucks, buses, automobiles, and specialty vehicles. EMI provides complete turn-key service from specification and design, through manufacturing, installation, training, and service.
FAB Industries
Since its inception, FAB Industries has been setting the gold standard in alternative fuel storage systems for heavy-duty vehicles. Our emphasis on quality, system integrity and reliability has resulted in years of trouble-free service for our fleet customers. Whether your fuel of choice is natural gas or hydrogen, FAB has a storage solution to meet your needs. FAB systems are in use in throughout the U.S and Canada, as well as Europe and Mexico.
Fontaine Modification Company
For more than 50 years, Fontaine has been a leader in the truck equipment industry, supplying thousands of customers with quality products and competitive pricing with a constant goal of providing customer service and support second to none. Our products range from traditional truck equipment and new truck prep services to highly engineered modifications.
Tank ProvidersChart Industries
Chart manufactures a broad line of cryogenic and low temperature products for the purification, liquefaction, distribution, storage and application of gases such as natural gas, other hydrocarbons, helium, nitrogen, argon, oxygen and carbon dioxide for final use in a multitude of energy, industrial, commercial and scientific applications.
Dynetek Industries
Dynetek Industries and its 100% owned subsidiary Dynetek Europe GmbH manufacture and develop the world's leading alternative energy fuel storage cylinders and systems. Our cylinder technology powers the world's fleet of alternative energy vehicles.
Faber
Established in 1972, Faber Industries has grown rapidly to become the leader in the production of seamless steel and composite cylinders for the storage of high-pressure gases.
Lincoln Composites
Lincoln Composites operates one of the world’s most-advanced facilities for designing, testing and manufacturing composite pressure vessels. We focus our efforts on three core business categories: natural gas and hydrogen vehicle fuel tanks, fuel storage systems, and accululators.
Luxfer Gas Cylinders
Established in 1898, Luxfer Gas Cylinders has grown to become the world leader in the development, production and supply of seamless, extruded aluminum and composite high-pressure cylinders for the storage of gases. With five manufacturing sites in Europe and North America and sales offices in many countries, Luxfer Gas Cylinders is positioned to meet all your high-pressure gas storage needs, whether global or local.
Structural Composites Industries
SCI is the leading global producer of lightweight, filament-reinforced composite cylinders, pressure vessels and structures. SCI's customer list includes the world leaders in transit bus, automobile, aerospace and Self Contained Breathing Apparatus (SCBA) cylinder applications.
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