Equipping the World’s Heavy-Duty Engines to Break Free from Fossil Fuels

We equip engines that are so critical to our global economy– from fleets to power generation, agriculture, construction, mining, marine, and more – to break free from dirty, petroleum-based diesel fuel and run on 100% decarbonized, renewable, liquid fuels.

The fastest path to emissions reductions in the heavy-duty industry.

At ClearFlame Engine Technologies, we’re driving the fastest possible path to true emissions reduction in a wide range of heavy-duty industries.

There’s no need for new infrastructure development, costly subsidies, or new industry paradigms. Our innovation is low-cost for engine manufacturers to implement and integrate into existing production processes. We can even help to remove the pollution from the millions of diesel engines already in service through remanufacturing or retrofitting using our flexible technology. And, our engines can run on many low and zero-carbon fuels, offering benefits to a wide range of countries around the world.

ClearFlame Co-Founder and CEO BJ Johnson said, “To meet the emissions reduction goals of the Paris Climate Accord — as well as meet California, New York, and other state commitments to reduce greenhouse gas emissions by 80 percent by 2050 — we need to achieve significant carbon reductions in the next decade.”

“We need to achieve significant carbon reductions in the next decade.”

– ClearFlame Co-Founder and CEO BJ Johnson

By The Numbers

Our technology reduces fuel costs, demonstrates sustainable business practices, stays ahead of emissions standards, improves air quality, and mitigates GHG emissions, all helping to solve some of the greatest challenges of our climate crisis.


Lower engine-out soot


Lifecycle reduction in carbon emissions, on a path to net-zero