Holy Cow: Christian von Koenigsegg Invents “Free Valve” Engine That Requires No Camshaft

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Why won’t the internal combustion engine die? To oversimplify the issue, it’s partly because of its incumbency and partly because it’s very good at what it does. Environmentalists hate it because it’s dirty, and while some engineers pursue alternate energy forms, there are still plenty of smart people tweaking the internal combustion engine to make it less dirty, more efficient, and more powerful.

One person in the latter category is Christian von Koenigsegg, the rather brilliant inventor behind the Swedish supercar skunkworks that bears his name. Anyone with a basic understanding of how engines work is bound to be impressed by von Koenigsegg’s latest breakthrough: He’s developed an engine with no cams.

With a conventional engine, the valves are driven by cams that are necessarily egg-shaped, with each cam driving its attendant valve stem into its deepest extension at the pointiest part of the egg as the cam rotates on the camshaft. Simple physics dictate this be a gradual process; because of the egg shape the valve gradually opens, maxes out, and gradually closes. If a cam was shaped like an off-center square, for instance, the valve stem would break on the corners.

With von Koenigsegg’s radical “Free Valve” engine design, the valves operate independently and electronically to depress/open, while a mechanical spring returns them to the closed position. This means the valves quickly slam open, allowing fuel to flood the combustion chamber, then quickly slam shut. Ditto for the exhaust valves. So fuel is not gradually seeping in and exhaust is not gradually seeping out—it’s going BAM in, BAM out. The benefits? The engine is much smaller, of course, requiring no camshaft or timing belt. On top of that they’re projecting 30% less fuel consumption, 30% more torque, 30% more horsepower, and a staggering 50% less emissions.

In the video below, von Koenigsegg walks you through it:

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Christian von Koenigsegg’s Camshaft-Free, ‘Free Valve’ Engine: Smaller, More Powerful, More Efficient

koenigsegg-02.jpg

Why won’t the internal combustion engine die? To oversimplify the issue, it’s partly because of its incumbency and partly because it’s very good at what it does. Environmentalists hate it because it’s dirty, and while some engineers pursue alternate energy forms, there are still plenty of smart people tweaking the internal combustion engine to make it less dirty, more efficient, and more powerful.

One person in the latter category is Christian von Koenigsegg, the rather brilliant inventor behind the Swedish supercar skunkworks that bears his name. Anyone with a basic understanding of how engines work is bound to be impressed by von Koenigsegg’s latest, a camshaft-free design.

With a conventional engine, the valves are driven by cams that are necessarily egg-shaped, with each cam driving its attendant valve stem into its deepest extension at the pointiest part of the egg as the cam rotates on the camshaft. Simple physics dictate this be a gradual process; because of the egg shape the valve gradually opens, maxes out, and gradually closes. If a cam was shaped like an off-center square, for instance, the valve stem would break on the corners.

With von Koenigsegg’s “Free Valve” engine design, the valves operate independently and electronically to depress/open, while a mechanical spring returns them to the closed position. This means the valves quickly slam open, allowing fuel to flood the combustion chamber, then quickly slam shut. Ditto for the exhaust valves. So fuel is not gradually seeping in and exhaust is not gradually seeping out—it’s going BAM in, BAM out. The benefits? The engine is much smaller, of course, requiring no camshaft or timing belt. On top of that they’re projecting 30% less fuel consumption, 30% more torque, 30% more horsepower, and a staggering 50% less emissions.

In the video below, von Koenigsegg walks you through it:

(more…)

Now this is a Jag

Without looking, take a minute to describe what you imagine a Jag looking like… chances are, you just described the classics AND the modern Jaguar XK-I concept. It’s an automotive brand that relies heavily on its name; a name originally synonymous with dramatic curves, top-notch materials, thoroughbred British performance, and overall star-quality of the earlier 50s and 60s models. It’s nice to see a Jag concept that embodies the roots of the brand when it was in its prime!

Designer: Mudit Gupta


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(Now this is a Jag was originally posted on Yanko Design)

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The Rainrunner: A Portable Way to Stay Dry While Motorcycling in the Rain

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Last year, we caught wind of a company called Roof for Two that had a cool project under wraps, no pun intended: A portable, fold-flat, quickly-deployable rain shield for a motorcycle. We contacted them, but they couldn’t send us video or images of it at the time, as they were in the midst of applying for both a design patent and a utility patent.

Well, the wait is over: The patents have been granted, and a demo video of what they’re calling the RainRunner is ready.

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Would those of you with motorcycle experience use of these? While the concept looks cool to a non-biker like me, the company has been struggling; they’re currently lights-out, due to problems acquiring seed funding. Your opinions could provide some useful insight.

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Roll and R1de

The futuristic R1 (Roller 1) concept vehicle was designed for the not-so-distant 2030s and aims to shed light on what might be expected from urban vehicles of the future. Powered by hydrogen fuel-cell technology, the R1 moves on 4 spherical wheels capable of cross-directional movement, making it ideal for parking, changing lanes, or turning on a dime. The small size of the hydrogen power plant provides more cockpit space on a lightweight chassis and also makes its low profile possible.

Designer: Nicholas Evans


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(Roll and R1de was originally posted on Yanko Design)

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Supersonic Space Tourism

The SXT-A Iron Speed aircraft concept combines three types of next-gen propulsion engines that work in different stages to connect destinations. It’s like any commercial flight but offers space-tourists the opportunity to experience a supersonic cruise speed at Mach 2, a maximum hypersonic speed at Mach 6, as well as a few minutes on the border of space at an altitude over 100km. With break-neck speed and the excitement of a moment in space, it’s like taking your favorite roller coaster from New York to Paris.

Designer: Oscar Viñals


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(Supersonic Space Tourism was originally posted on Yanko Design)

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Mini Transformer

The age of super-compacts is in full swing, but with that smaller wheelbase comes compromise in stability. MONO is a transformable EV that adapts its stance to maximize the driving experience whether you’re in the city or on the open road. The vehicle automatically adjusts the wheelbase depending on road type, traffic, or speed to ensure stability and practicality no matter the driving conditions. In its compact form the EV is only slightly larger than a motorcycle, making it perfect for zipping around the city.

Designer: Heesang Ahn


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(Mini Transformer was originally posted on Yanko Design)

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Highlights from the Geneva Auto Show 2013

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Guest post by Richard Green of Plan

With European car sales in decline, it should come as no surprise that many manufacturers are increasingly focused on growth in China and the US. Couple this with the fact that many brands now opt for CES as a showcase for their latest connected car technologies, and this year’s Geneva Motor Show was never going to be the showstopper of old.

To save you the trip, we’ve pulled together our highlights from the show—a selection of some of the finest design executions and some food for thought on an industry going through some massive changes.

The Crass Italian Super-cars
The mass drooling over this year’s pin-ups—the Ferrari LaFerrari and Lamborghini’s eccentric Venero—is perhaps an indication of what is wrong with the car industry. Testosterone prevails and with price tags of €1.3m for the LaFerrari and €3.12m for the Venero, it’s also clear to see that the global recession is having little impact on high-end luxury purchases—if anything it’s spurring on ever more ostentatious forms. Lamborghini no longer even seem concerned with aesthetic coherence, a frenzy of hard facets being ‘complemented’ by confused looking softer forms. Ferrari’s counterpart, although slightly more refined, is plain awkward looking, a common result when attempting to flex F1 credentials too literally on consumer cars.

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Mixed Fortunes for British Luxury Brands
Over at Aston Martin, the Rapide seems to have lost a little of it’s predecessors’ understated elegance. The deeper, more aggressive face gives the car a burly presence that you might not usually associate with the brand, but it is a measure that will surely increase its appeal in China, a key market for the brand if it is to survive in the future. At a cool £250k, Rolls-Royce’s Wraith Coupe had what was probably the most sophisticated interior on display. With a nod to modern boating materials, the ‘Canadel’ wood options are named after the South France cove where company founder Sir Henry Royce and team spent time developing their wares in the 1910s—nice story and nice execution.

Last and perhaps least, Bentley looked every bit a manufacturer in transition while new studio boss Luc Donckerwolke begins his task of reinventing the brand. The new Flying Spur looked unconvincing from many angles, though especially the rear—a duller and more slab-sided take on Maserati’s distinctive derrière. It was hard to pinpoint exactly, but it just seemed to be lacking character—something Donckerwolke brought to Lamborghini in spades. Let’s hope he can do the same with Bentley moving forward.

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Lamborghini Succeeds in Creating World’s Most-Difficult-to-Wax Car

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They said it couldn’t be done, but Lamborghini has pulled a design coup and successfully created the world’s most-difficult-to-wax car. A cleverly arranged array of fins, vents, humps, angles, and even dangerously sharp edges have been designed to stymie even the most dedicated lackey, who simply will not be able to apply Meguiar’s and wipe it back off in a reasonable amount of time. Mr. Miyagi’s car, this isn’t.

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That isn’t the only benefit conferred by the contorted shape: Should a cinderblock fall onto the car from above and damage the sheet metal, onlookers will likely not be able to tell where the damage occurred, saving the driver money on bodywork.

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Early chatter indicated these drawings were fake, but Jalopnik’s now fairly certain that the Lamborghini Veneno will debut at this week’s Geneva Motor Show. Priced at a reasonable $4.6 million, the Veneno should prove irresistible to young families who need to get around town in a safe, roomy way. And the exterior styling belies a sensible 6.5-liter V12 powerplant, whose 750 horsepower and 220 m.p.h. top speed should be more than enough to get you over to the inlaws in a comfortable manner.

The Veneno will reportedly not come with a glovebox, but instead, a handbasket. Then you can take that handbasket, place the car inside of it, and you can bring it straight with you to Hell.

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2 Wheels for Toyota

Designer Francisco Ulla’s concept for a Toyota brand Hybrid Bike focuses on use of lightweight materials and straightforward functionality of its electric motor that together offer efficient mobility in the city. The small rechargeable motor is located in the crankset near the pedal and provides instantaneous assisted power on command using the handlebar throttle. Composed almost entirely of aluminum and bioplastic, the design upholds Toyota’s modern eco-conscious direction making it a perfect compliment to the hybrid city car. 

Designer: Francisco Ulla


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(2 Wheels for Toyota was originally posted on Yanko Design)

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