Hydrogen Injection – News Analysis India

New Retrofit System Converts Diesel Engines to Run on 90% Hydrogen

News Analysis India — Tue, 05 Aug 2025 00:00:00 +0000

Researchers have developed a retrofit system capable of converting existing diesel engines to run on 90% hydrogen, a significant step toward reducing emissions and improving efficiency. This technology, developed by UNSW researchers, aims to help businesses lower their environmental impact without replacing existing assets. The system replaces the diesel injection system, introducing hydrogen directly into the engine and allowing independent control of hydrogen and diesel injection timing. This method efficiently utilizes low-quality hydrogen and employs a stratified hydrogen injection technique to minimize nitrous oxide emissions, potentially below those of conventional diesel engines. The Indian government’s plans for eco-friendly mobility include developing hydrogen processing, which could pave the way for widespread adoption of such retrofit kits. UNSW intends to commercialize the kits, targeting fleet and generator operators like mining operations with existing hydrogen supplies.

Innovative Retrofit System Enables Diesel Engines to Run on 90% Hydrogen

News Analysis India — Sun, 03 Aug 2025 00:00:00 +0000

Researchers have developed a novel retrofit system designed to convert existing diesel engines to run primarily on hydrogen fuel. This technology, which is being developed by UNSW researchers, aims to help older vehicles transition to cleaner fuel sources. The system is designed to replace the standard diesel injection system, injecting hydrogen directly into the engine, and also allows for independent control of injection timing for both hydrogen and diesel systems. The system is designed to efficiently utilize low-quality hydrogen. The stratified hydrogen injection technique produces varying concentrations within the cylinder, resulting in reduced nitrous oxide emissions. This approach offers a pathway for businesses to significantly decrease emissions without discarding existing, functional assets. The developers are targeting fleet and generator operators, such as mining operations, that already have access to hydrogen supplies.

Revolutionary Retrofit System Converts Diesel Engines to 90% Hydrogen Fuel

News Analysis India — Sat, 02 Aug 2025 00:00:00 +0000

Researchers have developed a groundbreaking retrofit system designed to transform existing diesel engines to run on a 90% hydrogen fuel blend. This innovative technology promises to significantly reduce carbon dioxide and nitrous oxide emissions while simultaneously boosting engine efficiency, potentially by as much as 26%. The system represents a significant step towards sustainable transportation, offering a practical solution for businesses looking to minimize their environmental impact without discarding existing assets. The core of the system involves replacing the existing diesel injection system and introducing hydrogen directly into the engine, coupled with independent control of injection timing for both fuels. The system’s ability to efficiently utilize low-quality hydrogen further enhances its appeal.

Revolutionizing Diesel Engines: A New Retrofit System for 90% Hydrogen Fuel

News Analysis India — Sat, 26 Jul 2025 00:00:00 +0000

India is focusing on retrofitting older vehicles to utilize cleaner fuel technologies, and a recent technological advancement offers a promising solution. Researchers at UNSW have developed a retrofit system enabling existing diesel engines to run on 90% hydrogen. This innovation is expected to drastically lower carbon dioxide and nitrous oxide emissions while potentially boosting efficiency by 26%.

The system is not a complete conversion to green fuel but allows businesses to substantially reduce emissions without discarding functional assets. The system replaces the existing diesel injection system by directly injecting hydrogen into the engine, with independent control of hydrogen and diesel injection timing. A key benefit is the system’s ability to efficiently utilize lower-quality hydrogen.

The development team has demonstrated that stratified hydrogen injection produces varying concentrations within the cylinder, reducing nitrous oxide emissions below those of conventional diesel engines. This aligns with the Indian government’s plans to incorporate hydrogen processing into eco-friendly mobility. Once the necessary infrastructure is established, such retrofit kits could become commonplace.

UNSW is working to commercialize these kits, targeting fleet operators, such as those in mining, who already have hydrogen supplies. Other companies, like HYDI, are developing alternative retrofit kits that generate hydrogen on the go, requiring only occasional water top-ups. This eliminates the need for external hydrogen fueling infrastructure and may reduce fuel consumption by 5–13%.