Ricardo Claims 2-Stroke/4-Stroke Breakthrough

ricardo claims 2 stroke 4 stroke breakthrough

As much as I like the idea of a hydrogen fuel-cell/nuke-plant-powered future, there's a lot of miles left in ye olde internal combustion mill. For instance, if you replaced mechanically-motivated valves with electronically operated ones, you'd increase both power and mileage. And if you could somehow get the power of a two-stroke engine without constantly burning oil and piston rings or needing a carburetor, why you'd be popping wheelies like a Yamaha RZ 350! Ricardo says yes we can. Their "2/4SIGHT" is a single bank from a V6 set-up to run as two-stroke/four-stroke. Allegedly, it seamlessly switches between two- and four-stroke cycles as power demand increases and decreases. In theory, a 2.1-liter V6 [theoretically] would thus produces 265hp and 339 ft.-lbs. of torque at 2,500 rpm, 27 percent fuel savings and lower carbon emissions. Sadly for now, 2/4SIGHT uses a whole raft of high-tech solutions (boost, injection, intake and exhaust valves are all variable for each cylinder); it's not ready for prime time. We'll keep you posted.

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  • Eh_political Eh_political on Mar 26, 2008

    i wonder if GM has ever considered doing a pushrod 4 based on their 5.7 litre v8. vibration might be acceptable/fixable; power, economy, and flexibility might finally put the Accord and Camry 4's in their place.

  • Landcrusher Landcrusher on Mar 26, 2008

    This would be great for piston aircraft. Hope they get it solved before we are banned from the skies.

  • Terry Terry on Mar 26, 2008

    # eh_political : March 26th, 2008 at 5:28 pm i wonder if GM has ever considered doing a pushrod 4 based on their 5.7 litre v8. vibration might be acceptable/fixable; power, economy, and flexibility might finally put the Accord and Camry 4’s in their place. EP..The Camry and Accord 4s are already IN THEIR PLACE. And GM's 4s??

  • Johnson Johnson on Mar 27, 2008

    Interesting concept, by Ricardo, but definitely not ready yet for production. The exciting thing is there is a lot of research going on of how improve the ICE. Everything from fully electronic valve timing, to camless engines, to electrically assisted turbos.

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