Home Forums General Discussion FIFTH STROKE ENGINE?

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
  • #43086
    Angel Ramirez

    And some people think that the future is hybrid or diesel wait until you see this. :rotate: Ilmor Engineering touts new fuel efficient five-stroke engine design

    by Jeremy Korzeniewski (RSS feed) on Aug 9th 2009 at 11:54AM

    Well-known British tuning and racing company Ilmor Engineering has announced an intriguing new test engine that’s reportedly capable of returning diesel-like power and efficiency figures while running on standard gasoline and lowering emissions. Displacing just 700cc and yet putting out 130 horsepower and 122 lb-ft of torque, the turbocharged engine’s secret weapon is in its fifth stroke.

    Fifth stroke? Here’s how it works: two of the engine’s cylinders, running with a conventional four-stroke design, fire and expend their exhaust gases into a third low-pressure expansion cylinder. A fifth stroke then allows those gases to expand, boosting thermodynamic efficiency. Due to this clever design, Ilmor estimates a five-percent improvment in overall efficiency versus a conventional direct injected engine of similar displacement.

    Future plans call for a second generation of the technology offering up 150 horsepower and weiging 20-percent less than current engines. Interestingly, Ilmor engineering manager Steve O’Connor says, “We’re looking for a manufacturer to back the idea, and the interest centres on its use in a hybrid application, as they tend to need sudden bursts of energy, and that is what this engine does well.”

    [Source: Ilmore Engineering via Autocar]

    Filed under: Emerging Technologies, MPG, Lightweight, UK

    Tags: fifth stroke, FifthStroke, five stroke, FiveStroke, ilmore, ilmore engine, ilmore engineering, ilmore five stroke, IlmoreEngine, IlmoreEngineering, IlmoreFiveStroke

    Kirk Deason

    Didn’t Ilmor take a stab at a GP bike, too? I think it ran about one race but still, good engineering.

Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.