Toyota Patent Reveals New System That Uses Both Turbo and Supercharger

Jason Siu
by Jason Siu

Toyota is working on a forced induction system that has an electric supercharger and a turbocharger.

We know Toyota has been developing electric superchargers from a previous patent application for a special bearing design, but has discovered a patent detailing a supercharging system that is applied to an internal combustion engine. The system includes a turbocharger powered by the engine’s exhaust gasses while the supercharger is powered by electricity. The goal would be a two-stage system where the electric supercharger would provide performance while the turbo spools up, helping eliminate what is called “turbo lag.”

What makes the patent particularly interesting is that Toyota details a supercharging control device “that changes over the supercharging mode between: a single-stage supercharging mode in which the internal combustion engine is only supercharged by the turbocharger, due to electrical driving of the electric supercharger being stopped with the bypass valve in the open position; and a two-stage supercharging mode in which the internal combustion engine is supercharged by both the turbocharger and the electric supercharger, due to electrical driving of the electric supercharger being performed with the bypass valve in the closed position.”

SEE ALSO: The Toyota Supra or Lexus LC Could Get an Electric Supercharger

Basically, the system would have threshold values it uses to switch the bypass valve between open and closed so that the vehicle could dynamically use either both the electric supercharger and turbocharger or just the turbocharger to boost engine performance. Unfortunately, the patent doesn’t go into details about which engine the system would be used on, but if we had to guess, this could preview what the Toyota Supra’s successor will have, or it might be used in the high-performance Lexus LC F to make it more of a supercar competitor.

Discuss this story on our Toyota Forum

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.

More by Jason Siu

Join the conversation
2 of 3 comments