Our technology

What is HPDI?

The HPDI fuel system is a fully integrated “tank to tip” solution based on diesel technology. It offers all of the range, performance and drivability of a diesel engine.

The high pressure direct injection, or HPDI internal combustion engine system is today’s most fuelflexible solution in terms of which low carbon fuels it can run on, including renewable natural gas, hydrogen, e-Fuels and biofuels.

Engines can achieve higher horsepower and torque by using direct injection and relying on high pressures in the combustion chamber for ignition. Subsequently, the characteristic of the engine using an HPDI fuel system is very similar to a diesel engine.

HPDI LNG

Fully OEM integrated LNG/bioLNG fuel system offering industry leading fuel costs and CO₂ emissions savings for heavy duty vehicles.

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HPDI H₂

Hydrogen HPDI™ system: a practical, efficient, cost effective and robust solution for hydrogen mobility.

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Whether it uses biomethane or hydrogen, the HPDI technology delivers industry leading CO₂ reductions for long haul transportation

HPDI with 40% biomethane delivers the same life cycle CO₂ reductions as fuel cells using blue/green hydrogen blends, and can deliver zero WTW CO₂ with pure biomethane.

Low threshold for diesel engine manufacturers

One of the standout features of HPDI is its seamless integration into existing vehicle architectures. Equipment manufacturers can leverage existing engineering talent and experience, installed investments, and decades of technology development in vehicle powertrain design, supply chain, and manufacturing. The base diesel engine remains unchanged. What changes is the fuel delivery system. Once converted, the same HPDI components are used for CNG, LNG, H₂.

At the heart of the engine is a revolutionary patented injector with a dual concentric needle design. It delivers small quantities of diesel fuel and large quantities of natural gas, at high pressure, to the combustion chamber. The natural gas is injected at the end of the compression stroke.

Market Opportunity

In a world where we are hauling more freight and travelling greater distances, HPDI Technology products and technologies are leading the shift to clean and affordable transportation.