HPDI™ fuel systems protects engine development investment, reduces emissions today, delivering proven diesel-grade performance, with a path to hydrogen and future renewable fuels.
Fewer engine changes. Greater development value and continuity.
HPDI™ integrates with your existing diesel-engine platform through targeted adaptation. Our proprietary dual-concentric-needle injector replaces the conventional diesel injector while retaining the compression-ignition architecture. This carries forward most of the proven powertrain systems, manufacturing, and established supplier base. By contrast, other gas alternatives require more engine changes, trading away diesel-grade performance.
Engine Integration
Engineered for each platform, reusing engine, aftertreatment, controls and validation.
Vehicle Integration
LNG storage replaces the main diesel tank, integrating high-pressure pumping, vaporization, and pressure management.
Product Engineering Continuity
An established HPDI LNG/BioLNG platform extends OEM powertrain investment into hydrogen.
Launch Readiness
Validation, suppliers, manufacturing, and launch planning advance in parallel to reduce execution risk.
The technology works. The investment case does too.
An HPDI™ LNG/BioLNG program builds on proven diesel-engine architecture—without a ground-up truck redesign. It gives OEMs a lower-risk route to commercial return while improving certified vehicle CO2 performance where validated HPDI efficiency delivers an advantage.
Extend platform investment
Extends proven diesel-engine investments across engineering, manufacturing, service, controls, and software—reducing development scope, time, and risk.
Build future optionality
Establish a common engine-platform foundation for LNG/bioLNG, hydrogen, and other renewable-fuel programs as those markets develop.
Strengthen CO₂ position
Benefit from EU compliance flexibility through 2029 by building credits and reducing fleet emissions exposure.
Create commercial return
Add product revenue opportunities and margin from every HPDI powered truck sold.
What we bring. What we build together.
HPDI™ is delivered through a defined OEM-Cespira™ development model. Each organization retains ownership of its core system responsibilities, while both teams work together across integration, validation, industrialization and launch.
OEM Ownership
Cespira™ Ownership
Shared execution
From first conversation to fleet deployment.
A typical HPDI™ program runs in four phases over 24–36 months, though the timeline adapts to your platform priorities.
Scoping & feasibility
Platform fit assessment, fuel strategy alignment, commercial framing. 2–4 months.
Co-development
Joint engineering, prototype integration, dyno validation. 8–12 months.
Field validation
Pilot fleet deployment, real-world data collection, certification. 6–10 months.
Production launch
Series production, sales enablement, ongoing field support. 6+ months.
HPDI™ expertise from development to serial production.
200+ engineers & specialists. ~400 patents. One clear mission.
Cespira combines global R&D, European manufacturing, automotive-grade supplier processes, and real-world field experience to support engine programs from system architecture through industrialization and launch.
