Delphi Testing New High MPG Engine Combining Gasoline, Diesel Technology

Jason Siu
by Jason Siu

Major automotive parts supplier, Delphi, is working on new technology that could improve the fuel economy of standard gasoline engines by 50 percent.

Currently Delphi is running a test engine that is similar to a diesel engine, but runs on gasoline. The single-piston test engine with the new tech was demonstrated under a wide range of operating conditions and early fuel economy figures show that the engine could be far more efficient than even diesel engines. The estimates were based on simulations on how an average, mid-sized vehicle would perform with a multi-cylinder variant of the powerplant.

Delphi is hoping that this technology, which combines the best qualities of diesel and standard gasoline engines, will make an affordable alternative to the much more expensive hybrid and electric vehicles on the market today. Its approach is using a gasoline-direct-injection compression ignition system, taking advantage of the advanced fuel injection, air intake and exhaust controls modern engines have.

Engineering manager of advanced powertrain technology at Delphi Powertrain, Mark Sellnau, also said the engine could be paired with a battery back and electric motor to further improve fuel efficiency, though the costs may not be worth it. The major question is whether or not automakers will adopt the technology rather than investing into a hybrid or electric powertrain of its own.

[Source: MIT Technology Review]

Jason Siu
Jason Siu

Jason Siu began his career in automotive journalism in 2003 with Modified Magazine, a property previously held by VerticalScope. As the West Coast Editor, he played a pivotal role while also extending his expertise to Modified Luxury & Exotics and Modified Mustangs. Beyond his editorial work, Jason authored two notable Cartech books. His tenure at saw him immersed in the daily news cycle, yet his passion for hands-on evaluation led him to focus on testing and product reviews, offering well-rounded recommendations to AutoGuide readers. Currently, as the Content Director for VerticalScope, Jason spearheads the content strategy for an array of online publications, a role that has him at the helm of ensuring quality and consistency across the board.

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