Make the switch to natural gas engines
Natural gas engines and vehicles are among today's most mature, proven, and least disruptive low-carbon vehicle types. With our reliable and efficient natural gas engines, you'll get long-term savings and immediate regulatory compliance. Drive into the future with Cummins natural gas engines.
Natural gas engines can power a more sustainable world
Cummins is committed to simplifying the energy transition and supporting your journey. With over three decades of experience, we have solutions tailored to every challenge to ensure a smooth and successful transition to natural gas vehicles.
Justify cost
Switching to a natural gas engine will help you meet emissions standards and save time and money through stable fuel pricing, cheaper fuel costs, and maintenance and fluid free, three-way passive catalyst aftertreatment systems.
Make a smooth transition
All Cummins natural gas engines are backed by the full service network and channel support. Familiar engine architecture means lower costs associated with upskilling technicians and re-tooling service locations.
Reduce emissions
Natural gas engines deliver the best well-to-wheel GHG reduction option and can be net carbon negative when using Renewable Natural Gas (RNG).
Adjust to a different technology
Natural gas engines deliver the least disruptive alt fuel technology, with a 1-to-1 vehicle replacement ratio. They’re built on 30+ years of natural gas experience, have known maintenance practices, and are capable of multi-shift operations.
Cummins natural gas engine technologies
Power and performance with natural gas engines
Natural gas is a clean-burning fuel that decreases the emission of greenhouse gases (GHGs) and particulate matter such as carbon dioxide (CO2) and nitrogen oxides (NOx) while delivering the same kind of power and performance Cummins engines are known for.
Look ahead
Our engines include newly-released features that connect in-mission operations directly to maintenance and repair processes, optimizing operations and minimizing downtime.
Cleaner fuel
Renewable natural gas (RNG) is a carbon-neutral and sometimes even carbon-negative alternative to diesel, which even the hardest-to-abate sectors can use.
Full integration
Cummins fully integrated powertrains provide the most complete offering of major components including engine and aftertreatment, transmission, axles, fuel delivery system, and digital features to provide the most innovative and capable solutions in the industry.
Abundance
Natural gas is widely available and less expensive than diesel and gasoline, making it a consistent fuel source independent of the global oil market.
Featured Engine
The X15N natural gas engine
The X15N engine is an industry-first natural gas engine that delivers a range of long-haul applications. Lighter than our 15L diesel models and powered by natural gas, the X15N significantly reduces emissions to meet even the most stringent regulations from the EPA and CARB regulations. With power ratings up to 500 hp and torque up to 1850 lb-ft, this heavy-duty engine brings the future of transportation to you so you can reach your environmental goals more effectively and efficiently.
Natural gas engine tools and resources
We're committed to creating best-in-class training and tools that empower informed decision-making. Explore our newest resources to stay updated on Cummins' latest innovations and the latest news in natural gas engines.
Companies aiming to minimize their environmental impact are prioritizing Scope 3 emissions—those generated across their entire value chain, including suppliers, contractors and transportation. Often the largest share of a business’s carbon footprint, these emissions present significant challenges, particularly for industries like manufacturing, food production, retail and shipping. Renewable Natur
November 21, 2024
As sustainability becomes a global priority, companies are exploring ways to cut greenhouse gas emissions across their entire operational footprint. This includes Scope 1 emissions directly under their control, like manufacturing processes. But companies can make a big impact by looking at ways to lower indirect emissions, known as Scope 3. Many companies in industries like food production, manufa
November 18, 2024
The Cummins Inc. X15N is the most powerful natural gas engine Cummins has ever built, with a broad engine torque curve to provide flexibility for various heavy-duty applications. The X15N weighs less than our current X15 diesel and has power ratings up to 500 hp and torque up to 1850 lb-ft, helping heavy-duty fleets start reducing their transportation emissions today, without sacrificing capabi
November 08, 2024
A decade ago, turbochargers for natural gas and diesel engines were not very different. However, new emissions regulations have driven the development of turbochargers specifically designed for natural gas engines. These turbochargers are adapted to stoichiometric burn conditions, where the mix of oxygen and fuel is precisely balanced. This balance ensures efficient combustion, leaving no unburnt
October 03, 2024
At Cummins Inc., we’re constantly looking for ways to advance sustainable transportation solutions. As the industry shifts to lower-emission fuels to reduce pollution, natural gas engines are one critical pathway to cleaner mobility. Cummins is therefore working to innovate component-level technologies supporting natural gas engines. Understanding how natural gas engines work and the components
September 26, 2024
Global power and technology leader Cummins Inc. (NYSE: CMI) has started full production of the X15N™ natural gas engine at its Jamestown Engine Plant. The Cummins X15N is the first 15-liter natural gas engine to be designed with flexibility to perform across a range of heavy-duty applications, including line haul and vocational. “This engine has been tested extensively in our field test, and it
September 12, 2024
On June 3, 2024, Cummins Inc. (NYSE: CMI) was awarded the bronze award from Consulting Specifying Engineer’s (CSE) 2024 Product of the year for their 125kW-200kW natural gas standby generators (QSJ8.9G) in the publication’s power category. This recognition marks the fourth consecutive POTY award win to Cummins from CSE. “All of us at Cummins Power Generation are incredibly proud of this award w
July 09, 2024
As the transportation industry shifts towards sustainable operations, a strong, reliable and extensive service network is essential for keeping vehicles on the road and fleets operating at peak performance. Service networks help fleets stay on the road faster and increase uptime (amount of time that a vehicle is available and operational for use) while also integrating advanced telematics and pred
May 09, 2024
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Natural gas engine FAQs
Natural gas engines work very similarly to diesel and gasoline engines. In natural gas combustion engines, natural gas is stored in a fuel tank and ignited using spark plug technology. Unlike their diesel and gas counterparts, natural gas engines can operate on compressed natural gas (CNG), liquid natural gas (LNG), and renewable natural gas.
With a natural gas engine, there is no need for complex after-treatment systems that aim to reduce NOx emissions. That’s because our Cummins natural gas engines are already certified at near-zero low NOx levels, 90% below the current standard for NOx emissions.
Because natural gas engines require spark plugs, diesel engines cannot run on natural gas. However, there are engines called bi-fuel or dual-fuel engines that can switch between diesel and natural gas.
Some engines use diesel to provide ignition and natural gas to provide power
