Automotive Research Association of India (ARAI) and Hydrogen-Powered Trucks
The Automotive Research Association of India (ARAI) is collaborating with the Ministry of New and Renewable Energy (MNRE) to develop a hydrogen-powered engine (H2-ICE) for heavy trucks and standardize testing procedures for hydrogen vehicles. The focus is on a direct-injection hydrogen internal combustion engine, with a testing program also encompassing hydrogen fuel cell vehicles.
Key Points:
- Research and Standards: The development is currently at the research and standards stage, not involving the launch of a new truck model.
- Initiative Details: The project was reported by Mint, citing sources and ARAI's FY2026 annual report. Its goal is to explore alternatives to diesel for freight movement.
- National Green Hydrogen Mission: This initiative is part of the wider National Green Hydrogen Mission, approved in 2023 with an allocation of Rs 19,744 crore.
Powering Trucks with Hydrogen
There are two distinct approaches to using hydrogen to power trucks:
- Hydrogen Internal Combustion Engine (H2-ICE): This engine burns hydrogen inside engine cylinders, utilizing a combustion process similar to petrol and diesel engines. However, significant modifications are required in the fuel system, storage, combustion controls, and safety arrangements. ARAI is developing a direct-injection version for heavy-duty engines.
- Hydrogen Fuel Cell Vehicle: In contrast, these vehicles combine stored hydrogen with oxygen in a fuel cell to generate electricity, which then powers an electric motor. Unlike H2-ICE, hydrogen is not burned in the engine cylinders, leading to different drivetrain and maintenance considerations.
Testing and Standardization
Before hydrogen trucks can be widely adopted, clear testing procedures are essential for performance, emissions, and safety assessment. These tests should encompass:
- Performance and Emissions: Beyond acceleration and fuel consumption, tests should address high-pressure hydrogen storage, potential leaks, crash protection, refueling equipment, and sustained heavy-duty use.
- Standardization: ARAI is drafting testing protocols for both H2-ICE and hydrogen fuel cell vehicles, aiming to provide common requirements for manufacturers and testing agencies, facilitating comparisons and regulatory compliance.
The Role of Diesel Trucks in Emissions
Heavy commercial vehicles, despite constituting a small percentage of the fleet, contribute significantly to carbon emissions due to their long-distance travel and high fuel consumption. The report cites that diesel trucks account for approximately 5% of the vehicle fleet but are responsible for about 34% of transport sector carbon emissions. Emission reduction strategies, such as hydrogen-powered trucks, could have a substantial impact in this sector.