While Cummins Westport's business does not include supplying fuel system components 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 truck-body builder (i.e. refuse) as the vehicle is being
manufactured to the customer's specifications.
There are many companies that provide 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 System Integrators
Advance 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. Agility Fuel Systems Agility Fuel Systems engineers and manufactures alternative fuel systems for heavy duty trucks, buses, and specialty vehicles. We provide our customers with timely, world-class advice, engineering, installation support, and aftermarket service. We make it easy for our customers to modernize their fleets. We deliver peace of mind, safety, and reliability, so that vehicle OEMs, dealers, service centers and fleet owners can relax and focus on what they do best. Phoenix Energy With over 60 years of combined experience, the team at Phoenix Energy is uniquely equipped to offer you the latest and most comprehensive alternative fuel solutions. We are a leader in the alternative fuels industry in Alabama and the surrounding states—applying our years of hands-on fleet management into practice at every level, from customer service to training new generations of technicians. Fuel Tank Providers
Chart 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. Quantum Technologies Our alternative fuel system experience dates back nearly 50 years. Along the way, we have designed and developed pioneering, innovative fuel metering, fuel storage and control systems for automotive OEM applications that can be found in world's leading automakers' product offerings. Our expanded portfolio of products include ultra-light weight fuel metering and fuel storage systems for aerospace, marine and specialized weight sensitive applications. Our integrated systems comprise fuel metering devices and patented Type IV ‘all-composite' high pressure vessels for Compressed Natural Gas (CNG) and Hydrogen (H2). Sleegers Machining & Fabricating Inc. Sleegers Engineering Inc. is a leader in the supply of propane motor fuel tanks for the after market conversion of vehicles. Its products are marketed all across North America either by direct sales or through local distributors. In addition, it designs and builds pressure vessels and heat exchangers in sizes ranging from 2.5 diameter to 13' and lengths of up to 100'. 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. |
