HPDI™ technology enables engines to run on lower-carbon fuels while retaining the compression ignition cycle, the principle behind diesel-engine performance. A small pilot injection initiates combustion, followed by high-pressure direct injection of the main fuel. This preserves diesel-grade power, efficiency, torque, engine braking and durability. Proven with LNG/BioLNG today, with a path to hydrogen and other renewable fuels.
HPDI™ Core Principles
A modular fuel system architecture integrates fuel storage, pressurization, delivery, and injection for LNG/BioLNG applications today, with a path to hydrogen. Compression ignition is initiated by a small pilot fuel, followed by direct injection of the main fuel at ~300 bar—retaining the torque, efficiency, engine braking, and reliability associated with diesel-engine performance.
Dual Concentric-Needle Injector
Two concentric, independently controlled needles manage injection of high-pressure pilot and main fuel through a single injector.
Diesel-Cycle Combustion Preserved
Retains compression-ignition cycle, delivering the torque, efficiency, engine braking and durability fleets rely on.
One System, Multiple Fuels
A common HPDI engine fuel-system architecture supports LNG/bioLNG and hydrogen, paired with fuel-specific vehicle storage and supply system.
Targeted Engine Adaptation
Leverages proven diesel engine architecture, replacing only the fuel system. The base engine, cylinder head and valve train, air-handling, cooling and aftertreatment systems are all retained
One Platform. Multiple Fuel Pathways.
Explore the HPDI™ LNG/BioLNG™ powertrain in production today, with a hydrogen version currently in development. Same engine. Different Fuel. Same Performance.
LNG/BioLNG. Hydrogen-ready. Same platform.
HPDI™ supports LNG/BioLNG and extends a common platform foundation to hydrogen and other renewable fuels—each through fuel-specific vehicle systems, dedicated development, validation, and certification.
Proven with LNG/BioLNG, in development for hydrogen. Ethanol and Methanol in the future
Up to net-zero CO₂ emissions with BioLNG, Hydrogen and HVO as pilot fuel - when considering well-to-wheels
Established supply chains supporting launch, scale and continuity
H2HPDI™ in development to meet EU zero-emissions (ZEV)
Capable of meeting the EU's regulatory definition of a zero emissions vehicle
Why HPDI™ wins for heavy-duty
Powertrain choice follows duty cycle. Urban and regional fleets have multiple viable paths. Heavy-duty, long-haul has one: HPDI. The only one combining performance with compelling TCO.
From tank to cylinder. Engineered as one system.
HPDI™ integrates fuel storage, pressurization, delivery, controls, and direct injection into one complete architecture for demanding compression-ignition applications.
Engine Integration
Injectors, rails, regulators, controls, and interfaces engineered around the selected engine platform.
Vehicle Integration
Fuel storage, high-pressure pumping, cooling, and packaging engineered as part of the complete vehicle program.
Built for Production
Automotive-grade development, validation, and supplier processes support industrialization, launch, and scale.
Performance fleets depend on
Delivers the power, torque, efficiency, engine braking, and durability demanding fleet operations require.
Differentiated LNG/BioLNG portfolio
Give fleet customers an LNG/BioLNG option that offers them competitive economics in demanding long-haul operations.
Greater value from existing platforms
Extend powertrain product development into new fuel applications with relatively small additional investment
Decarbonization progress today
Reduces tailpipe CO2 versus diesel, supporting OEM targets, while bioLNG delivers deeper lifecycle reductions for fleets.
Hydrogen readiness
Builds hydrogen and other renewable-fuel development on established HPDI architecture and experience.
Proven in real operations
More than 10,000 trucks and three billion kilometers of HPDI operation reduce program and adoption risk, shortening development cycle.
The technology works.
The economics work too.
Lower fuel costs than diesel in most markets coupled with EU toll and tax incentives, offset the vehicle premium and deliver a compelling Total Cost of Ownership (TCO) advantage. For OEMs, HPDI™ extends ICE platform investments into low-carbon fuel applications, while reducing certified vehicle CO₂. Locally produced BioLNG can significantly lower lifecycle emissions and strengthen regional energy security.
Find your path
