Hydrogen solutions suppliers

System integration for hydrogen solutions

With twenty years of experience as General Motors’ engineering center of excellence in propulsion solutions, Dumarey relies on solid automotive backbone knowledge to offer high-quality products and consistent engineering expertise for facing future challenges in hydrogen internal combustion engines and fuel cell systems. The hydrogen propulsion landscape presents unique technical challenges distinct from conventional fossil fuel applications including the extremely wide flammability range of hydrogen requiring precise mixture control to prevent pre-ignition and backfire events, the low volumetric energy density necessitating high-pressure storage systems and optimized injection strategies, and the absence of lubricating properties demanding specialized materials for fuel system components that prevent hydrogen embrittlement and ensure long-term durability.

Dumarey adapts the proposition to specific customer needs, whether delivering turnkey integrated powertrains or supporting focused work packages addressing particular technical challenges within larger hydrogen development programs. We act along the entire chain of industrial development from advanced engineering and early design through industrialization and aftermarket support, with continuous focus on manufacturability and scalability ensuring that laboratory demonstrations translate into production-ready systems capable of meeting cost and volume targets necessary for commercial deployment.

Comprehensive Hydrogen Integration Services

Our approach to hydrogen involves a holistic process addressing the complete system architecture rather than isolated component optimization. Dumarey supports customer projects in every phase from feasibility studies evaluating hydrogen viability for specific applications through serial production implementation, employing flexible and modular approaches that adapt to varying project maturity levels and customer internal capabilities. Customers rely on highly experienced engineering teams for innovation in hydrogen-specific technologies, development of control strategies optimized for hydrogen combustion or fuel cell operation, integration of hydrogen systems within existing vehicle or equipment platforms, and comprehensive testing validating performance and durability under representative operating conditions.

By focusing on these areas, Dumarey delivers innovative, robust, and reliable power and propulsion solutions that meet the evolving demands of industries transitioning toward hydrogen energy carriers while maintaining the operational flexibility, duty cycle capability, and total cost of ownership metrics that define commercial success in competitive markets.

Assessment & Planning

Evaluating client needs to design tailored hydrogen systems including fuel storage capacity analysis, power output requirements matching duty cycles, integration constraints within existing platforms, and regulatory compliance pathways addressing evolving hydrogen safety and emissions standards.

Engineering & Development

Utilizing advanced technologies for efficient system design including computational fluid dynamics modeling of hydrogen injection and combustion processes, finite element analysis validating structural integrity of high-pressure components, and model-based development approaches ensuring embedded software reliability and functional safety compliance.

Implementation & Support

Ensuring smooth deployment and ongoing maintenance.

By focusing on these areas, Dumarey delivers robust and reliable energy solutions that meet the evolving demands of various industries.

Applications Across Industries

Our system integration for hydrogen solutions serves multiple sectors where hydrogen advantages align with operational requirements. Heavy-duty transportation benefits from hydrogen’s rapid refueling capability enabling duty cycles incompatible with battery electric solutions requiring extended charging periods, while industrial applications leverage hydrogen’s ability to provide dispatchable power supporting variable loads without the performance degradation characteristic of battery systems operating at temperature extremes. These applications demonstrate our commitment to delivering versatile and sustainable energy solutions through effective hydrogen integration addressing real-world operational constraints rather than laboratory idealizations.

Automotive & Motorsport

Enhancing vehicle performance with hydrogen fuel systems including heavy-duty trucks requiring long-haul range without payload penalties, transit buses operating on fixed routes with centralized refueling infrastructure, and specialty vehicles where zero local emissions mandate alternative propulsion while operational profiles preclude battery electric solutions.

Industrial and Off-road

Powering manufacturing processes with clean energy including material handling equipment operating in enclosed facilities requiring zero-emission propulsion, backup power systems providing grid independence for critical operations, and mobile industrial equipment where refueling speed determines operational efficiency.

Energy Sector

Supporting grid stability and renewable energy storage.

These applications demonstrate our commitment to delivering versatile and sustainable energy solutions through effective hydrogen integration.

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Hydrogen Product Portfolio

Fuel Cell Integration

Dumarey accelerates hydrogen fuel cell development through complete testing, validation, and optimization ecosystems designed to improve efficiency, durability, and performance. Dumarey enables module testing for up to 500 kW fuel cell modules, while full powertrain system testing validates real-world performance under representative mission profile cycles.

Real-time system simulation allows execution of certification cycles, significantly reducing development time while ensuring regulatory compliance. Durability programs operate continuously, covering testing from component-level evaluation through full application integration, validating long-term reliability under accelerated aging protocols that compress years of field operation into months of laboratory testing.

Flexible and modular testing layouts adapt to different fuel cell architectures, enabling fast reconfiguration as projects evolve. We focus on minimizing hydrogen consumption by tailoring system calibration to specific applications – heavy duty on-highway & off-highway, marine & power generation – and specific powertrain characteristics, while optimizing cost versus performance tradeoffs and maximizing component lifetime for a more sustainable and cost-effective hydrogen transition.

Hydrogen Internal Combustion Engines

Designed for on-road and off-road applications, our hydrogen internal combustion engines deliver high performance with near-zero tailpipe emissions while maintaining operational characteristics familiar to conventional engine users. Dumarey develops complete engine and control solutions ensuring durability under extended operating hours, performance matching or exceeding diesel baselines, and seamless integration into demanding scenarios including construction sites, agricultural operations, and long-haul transportation.

These technologies support heavy-duty applications with daily operating hours exceeding passenger vehicle norms, extended periods between major overhauls aligned with diesel lifecycles, and harsh environments characterized by extreme temperatures, dust exposure, and high vibration levels. Reliability remains comparable to proven diesel platforms, while optimized hydrogen storage and consumption strategies preserve payload capacity and deliver driving ranges approaching conventional vehicles.

Refueling remains fast and operationally familiar, with fill times measured in minutes rather than hours, enabling a smooth transition for operators accustomed to conventional workflows. Leveraging in-house software development and calibration expertise, Dumarey defines hydrogen combustion strategies that maximize efficiency through precise injection timing and air–fuel ratio control, ensuring consistent performance across the full duty cycle envelope.

As a control units supplier, Dumarey designs and delivers engine control architectures specifically tailored to hydrogen internal combustion engines. These control systems address hydrogen-specific engine management requirements where precise mixture control is critical to prevent abnormal combustion, integration with high-pressure fuel systems demands robust functional safety architectures, and advanced diagnostic capabilities support the identification and mitigation of hydrogen-specific failure modes. Flexible platform architectures support both direct injection systems, enabling diesel-like efficiency and power density, and port fuel injection configurations that simplify integration with existing engine architectures while accepting modest efficiency trade-offs. Model-based development approaches guide embedded software implementation, ensuring accurate fuel metering, comprehensive fault detection, and control optimization balancing performance, efficiency, and emissions.

Hydrogen Injectors

Hydrogen injection systems represent critical technology for internal combustion applications where hydrogen’s unique properties demand specialized component design. Hydrogen’s low molecular weight and high diffusivity create sealing challenges as small molecules penetrate elastomer seals and metallic interfaces containing heavier hydrocarbon fuels. Pure hydrogen’s absence of lubricity necessitates specialized materials and surface treatments for injector components subjected to repeated mechanical actuation, while hydrogen embrittlement concerns require careful material selection preventing degradation of high-strength steels exposed to high-pressure hydrogen.

Direct injection systems operate at mid to high pressure levels, enabling late injection strategies that maximize efficiency and power density while minimizing pre-ignition risks. Port fuel injection systems operate at lower pressures but require larger flow capacities to deliver necessary volumetric fuel quantities given hydrogen’s low density. As established fuel injector manufacturer, Dumarey provides hydrogen engine developers with injection components specifically validated for hydrogen service, featuring materials resistant to embrittlement, seal designs preventing hydrogen permeation, and actuation systems maintaining metering precision throughout extended service lives.

Engine Control Units for Hydrogen Applications

Hydrogen engine control presents challenges absent from conventional fuel management including extremely rapid flame propagation requiring precise ignition timing control, wide flammability range enabling operation from ultra-lean mixtures to near-stoichiometric conditions, and propensity for pre-ignition demanding sophisticated detection algorithms and protective strategies. Control strategies must coordinate injection timing with ignition timing and throttle position optimizing combustion phasing while maintaining safety margins preventing abnormal combustion events.

Functional safety requirements for hydrogen applications exceed those typical of gasoline or diesel engines given consequences of control system failures potentially leading to hydrogen release or uncontrolled combustion. Engine control units must implement comprehensive monitoring of hydrogen system integrity including leak detection, pressure sensor validation, and injector fault diagnosis, with fail-safe strategies ensuring safe engine shutdown under fault conditions. Our control unit development addresses these requirements through model-based calibration reducing development time, adaptive algorithms compensating for component aging, and comprehensive diagnostic coverage supporting field service.

Hydrogen Retrofit Solutionss

Conversion of existing internal combustion engines for hydrogen operation represents an economically attractive pathway, enabling fleet operators to transition toward zero-emission propulsion while leveraging investments in conventional equipment and avoiding the capital expenditure of complete vehicle replacement. Successful retrofits balance performance and efficiency benefits against constraints imposed by legacy engine architectures not originally optimized for hydrogen fuel characteristics.

Retrofit solutions incorporate hydrogen-specific fuel system components, including high-pressure fuel rails, hydrogen-compatible injectors, and pressure regulation systems, while interfacing with existing engine control architecture. Dumarey supports retrofit applications where hydrogen engines replacing diesel powerplants require both design and controls specific adaptations. Safety system integration addresses hydrogen leak detection, ventilation requirements in enclosed compartments, and emergency shutdown protocols while preserving operator interface familiarity.

Testing and Validation Services

Comprehensive testing processes ensure the safety, reliability, and performance of hydrogen systems, addressing unique validation requirements beyond conventional fuel testing protocols. Safety testing encompasses leak detection system validation under representative operating conditions, pressure relief device verification, and material compatibility testing to ensure long-term hydrogen exposure does not degrade structural integrity or create embrittlement risks.

Performance validation evaluates hydrogen system operation across complete duty cycles, including cold-start capability, transient response during rapid load changes, and sustained operation under maximum load conditions, validating thermal management and component durability. Durability programs accelerate aging through extended operation, thermal cycling between extreme temperatures, and exposure to contaminants potentially encountered in field operation.

Why Choose Dumarey?

Expertise: Years of experience in system integration for hydrogen solutions.
Innovation: Continuous development of cutting-edge hydrogen integration
Sustainability: Dedication to providing eco-friendly energy solutions.

Partnering with Dumarey ensures access to top-tier services and support in the realm of hydrogen energy.

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