New Autogas direct-injection fuel system launched at ACT Expo

The Propane Education & Research Council (PERC) announced the debut of a new LPG direct-injection fuel system at ACT Expo 2025, which took place last month in California. The solution, which the result of a collaboration between Stanadyne, Katech and the PERC, was showcased in a GM 2023 Chevrolet Silverado 2500 HD pickup truck.

This technology combines Stanadyne’s direct injection fuel pump with vapor lock technology and injector system with Katech’s vapour lock inhibitor to create the industry’s first medium-duty engine capable of delivering Autogas up to 200-bar pressure directly into the combustion chamber.

Integrated into the Chevrolet Silverado’s 6.6L V8 L8T engine, the system produces 401 horsepower, 464 lb-ft of torque, and enables a towing capacity of up to 17,370 lbs. according to the PERC, this breakthrough sets a new benchmark for performance and efficiency in LPG-powered engine technology.

“The test engine/vehicle required only minimal modifications,” said Srinu Gunturu, Chief Engineer at Stanadyne. “With our newly developed LPG direct injection pump and injectors, the system demonstrates strong potential for cost-effective scalability and broad commercialisation. This technology not only reduces emissions but also makes clean propulsion more accessible for medium- and heavy-duty vehicles where electrification remains a challenge.”

During a 250-hour performance and durability test, the integrated system successfully demonstrated compatibility with existing engines, proving it to be a viable low-carbon, high-performance alternative to gasoline and diesel.

“This solution delivers lower emissions, higher efficiency, and the potential for significant cost savings because propane provides the lowest total cost of ownership,” said Gavin Hale, Director of Product Development and Power Generation at PERC. “This is the innovation fleet owners need to meet sustainability and economic goals.”

Source: PERC

Photo: PERC