Samrupa Tech LLP presents Port Cylinder Deactivation (PCDA), a patented fuel-efficiency technology designed to reduce fuel consumption and emissions in internal combustion engines through a simplified and cost-effective cylinder deactivation approach. PCDA addresses a critical challenge facing the global transportation sector: improving the efficiency of millions of existing petrol and diesel vehicles without requiring expensive hybridization, electrification, or major engine redesign.

Unlike conventional Cylinder Deactivation (CDA) systems used by some global OEMs, which depend on complex valvetrain modifications and costly control systems, PCDA uses a simplified intake-port control mechanism that selectively reduces cylinder load during low-demand operating conditions such as cruising, idling, and light acceleration. The technology is designed to deliver fuel savings while maintaining engine balance, drivability, and compatibility with existing engine architectures.

Over the past year, the technology has progressed significantly beyond the proof-of-concept stage. A working prototype has been installed and tested on a Ford Figo 1.4L diesel vehicle, completing more than 880 km of real-world road testing under mixed driving conditions. The prototype demonstrated a measured 21.1% improvement in fuel efficiency, increasing mileage from approximately 18.1 km/L to 21.92 km/L. Throughout testing, the vehicle maintained normal drivability, with no major operational issues observed.

PCDA is protected by a granted Indian patent and published through WIPO, with patent applications continuing in major international markets, including the United States and Europe. The technology has attracted interest from automotive professionals, startup ecosystems, and technical evaluation agencies. Most notably, the Automotive Research Association of India (ARAI) has reviewed the proposal and issued a formal test matrix for independent fuel economy and emissions validation. Samrupa Tech is currently finalizing resources to undertake this evaluation, representing a major milestone toward commercial adoption.

The technology is applicable to both petrol and diesel engines and has potential applications across passenger vehicles, commercial vehicles, tractors, mining equipment, and off-highway machinery. Its modular architecture supports both OEM integration and aftermarket retrofit deployment, making it particularly attractive for cost-sensitive markets seeking immediate fuel savings from existing vehicle fleets.

In parallel with validation activities, Samrupa Tech is preparing its first retrofit deployment on a medium-duty commercial vehicle to generate additional real-world performance data and support industry partnerships.

By combining measurable fuel savings, emissions reduction, affordability, retrofit compatibility, and scalability, PCDA offers a practical pathway for improving the sustainability of existing vehicle fleets while reducing operating costs for vehicle owners worldwide.