That’s right, your prayers have been answered: Someone in Silicon Valley is finally developing an opposed-piston, sleeve-valve, variable-cycle engine for passenger-car use.Yeah, OK, we weren’t praying for that, either. But it’s here, or at least claimed to be coming. In the grand tradition of Things Being Hyped That Might Not Actually Exist, it has a press release, fancy-looking sketches—which we’ve taken the liberty of borrowing—and several millions of dollars in private investment. And yes, it sports both sleeve valves—an efficiency-boosting technology long fraught with production complications—and a variable-cycle design that allows it to switch between Otto- and Diesel-cycle combustion on the fly. We even included engines with such oddities in our feature, The 10 Most Unusual Engines of All Time, thinking that no one would have the chutzpah to try this sort of stuff again.The firm in question, Pinnacle Engines of San Carlos, California, recently announced a commitment to developing what it says is an “ultra-efficient” engine by 2013. Few specifics have been released, but Pinnacle claims that its four-stroke powerplant will incorporate variable valve timing, direct injection, turbocharging, and a proprietary variable-compression-ratio technology. It will run on most fuels, including gasoline, diesel, and propane. Fuel economy is said to be… Read full this story
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Silicon Valley Firm Pinnacle Working on Classically Insane Opposed-Piston Engine have 316 words, post on blog.caranddriver.com at April 5, 2011. This is cached page on Vietnam Art News. If you want remove this page, please contact us.