16 Articles
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Dyanmic Skip Fire could bring a revolution to cylinder deactivation technology and boost fuel economy by around 15 percent. As opposed to shutting down just a set number of cylinders, DSF monitors all of them. General Motors thinks the system might be on some of its models in the future.

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While cylinder deactivation is hardly commonplace in modern engines, it's certainly not unheard of, especially from automakers hoping to eek out a little better fuel economy from larger displacement mills. It's not just for pickup trucks either; Lamborghini and Mercedes-Benz both shut down cylinders as a solution in some of their vehicles. However, automotive supplier Schaeffler thinks that there might be a reason to bring the tech to some of the smallest engines on the market – namely, th

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Volkswagen is constantly searching for ways to bring fuel-efficient options to the midsize Passat - a smart strategy considering it competes in one of the most popular vehicle segments. You can already opt for a diesel-powered TDI model, but the new VW Passat BlueMotion Concept hints at a future technology to improve fuel economy without resorting to hybridization.

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Less cylinders in action, more fuel economy. It's an equation that's been applied by automakers such as General Motors (the Chevrolet Corvette is a recent example), and now, German automaker Audi is getting into the act. Audi's calling the feature "cylinder on demand" (COD) and says it can boost a car's fuel economy by as much as 20 percent relative to fully-active mode.

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One Ohio-based inventor who's long proposed a technology that substantially boosts the driving range of a typical V8 engine says his idea still has plenty of legs. Doug Pelmear, whose HP2g technology was the guts behind the high-miles-per-gallon converted Mustang in 2009 and the Revenge Verde (pictured) that was displayed at the 2010 Detroit Auto Show, continues to try to get financial interest in his system. The idea is to boost fuel economy by shutting off fuel to some of the cylinders under n

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Lamborghini has announced that its Aventador supercar will now feature cylinder deactivation and stop/start technology, confirming previous reports of the Italian automaker's intent to improve the fuel efficiency of its products.

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It doesn't matter if you produce supercars, subcompacts, or semi trucks, U.S. and European governments are clamping down on fuel economy and emissions. While hybrid powertrains becoming a popular option, even in the hypercar realm, more traditional high-performance machines are being forced to get creative.

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Volkswagen has just unveiled cylinder deactivation technology for its 1.4-liter, four-cylinder TSI engine. This represents a world first for cylinder shutoff tech adapted for use on a four-cylinder engine.

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Balancing power and economy is a tricky business, especially for Mercedes-Benz and its in-house performance division, AMG. On the one hand, a buyer's conscience demands improved fuel economy and reduced emissions. But on the other, AMG knows what its customers really want is pure, unadulterated muscle.

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The New Grand Bentley - Click above to enlarge

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The crew at BWM's M division are all about performance and extracting all of it that they can from run-of-the-mill bimmers. However, they are not immune to the realities of the modern world and the demands for improved efficiency and reduced carbon emissions. With the X5 M and X6 M launching this summer, the next big project for the team is a new M5 based on the F07 5-Series coming later this year. The M5 won't actually launch until 2011 but, like their counterparts at AMG and quattro GmbH, the

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We've been hearing that Hyundai has big plans for its new V8 engine, despite the fact that fuel efficiency has just recently become paramount in the U.S. market. As the Korean automaker's first-ever V8, the company has plenty to learn. That's fine, since it appears as if Hyundai is truly serious about getting the most from its new powerplant. Supercharging is being explored first, and a force-fed version of the car, which an Autoblog reader managed to snap a few pictures of while it was being ga

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For the history-minded, there's a short, interesting article on AutoWeek's website about GM's early difficulties and eventual success with their cylinder deactivation system. The article starts with GM's failed attempt at rolling out their first production engine with the system installed under the Cadillac badge called V8-6-4 in 1981. The system had so many problems that Cadillac dealers often disconnected it because there was no known fix.

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General Motors Vice Chairman Bob Lutz was bitten by the blogging bug again yesterday and uploaded a post to the company's FastLane Blog. Despite his hectic schedule the Chairman got some seat time in a pair of new GM products and wanted the rest of us to know he was impressed.

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General Motors announced that it will be introducing 19 -- yes, 19 -- new engines and powertrains for the 2007 model year. The powerplants span the gamut of technologies available today and include hybrids, traditional gasoline-powered engines, ethanol powerplants and everything in between. The claim to fame for every last one is better fuel economy, reduced emissions and more choice, the automaker says.

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