2012 Honda Civic Cpe Ex on 2040-cars

Auto blog

Honda patents engine with different cylinder displacements

A basic rule of engine design states that the displacement of a cylinder is equal to the engine's total displacement divided by its cylinder count. Honda, according to a recently surfaced Japanese patent, is looking to break that rule with an engine containing cylinders of different sizes. We've done our best to translate it from patent-ese. The idea is that different-sized combustion chambers give more flexibility when any combination of cylinders are deactivated, or rested. Because the different numbers can be combined in various ways, it provides more and smaller increments than would an engine with equal-displacement cylinders. Take a 2.0-liter four-cylinder, for example. Following the golden displacement rule, each of the four cylinders has a volume of 500 cc, giving displacement increments of 500 cc when any cylinder is deactivated. But suppose instead that the four cylinders displace 300, 425, 600, and 675 cc, respectively. This would give the engine 15 available displacements instead of just four, and the spacing between each option would be far less than 500cc. As a result, those different virtual displacements would provide more adjustment between power and efficiency than a cylinder-deactivation system can on a conventional engine. Honda's patent describes cylinders with equal bore size, with the displacement from cylinder to cylinder varying based on the crank throw radius – the longer the throw, the longer the stroke and the larger the displacement of that particular combustion chamber. The patent describes how the cylinder sizes would need to be arranged to spread the load on the crankshaft and presumably limit vibration that would be introduced by the different pulse magnitudes. If we're interpreting things correctly, the largest cylinder (the one with the longest crank throw radius) sits in the middle of the bank with the smaller ones alternating on either side as they decrease in displacement. This concept is described for multi-cylinder inline and V-type engines of various sizes. The patent was filed in March of 2014 and published in January of this year. Whether or not this arrangement will reach production is of course unknown, but the advantages in terms of both efficiency and power seem promising. Related Video: News Source: Japan Patent Office via Auto Guide Green Honda Fuel Efficiency Technology patent

Bisimoto's 911 and Honda Odyssey each pack 1,000 hp

There aren't a lot of vehicles on the road that pack a thousand horsepower. The Bugatti Veyron and McLaren P1 are in rare company, but there have been a handful of aftermarket tuners that have managed to extract that much power out of lesser vehicles. Bisimoto is responsible for more than its fair share, so Matt Farah and the team at Drive stopped by the workshop in Southern California to check out the craftsmanship for the latest episode of Tuned. What they found is two vehicles with that astronomical four-figure output that otherwise couldn't be more different from each other. First up is the vintage, stripped-out 911 that company founder Bisi Ezerioha built for himself. It's based on a 1976 Porsche 911 Carrera with a widebody kit and a pair of turbochargers hanging off the back. The result is that thousand-horsepower output and, as Farah found out, one of the scariest, hairiest, and squirliest automobiles ever devised. As if that weren't enough, there's a thousand-horsepower minivan on the docket, too. This one is based on a Honda Odyssey, rebuilt on an air suspension and a six-speed manual gearbox conversion out of an Acura TL. And of course the engine's been tuned to deliver that headline output figure. Honda and Bisimoto showcased the vehicle at the SEMA show a couple of years ago, where Farah says he didn't think it could possibly hold together. But as he discovered in the video above, it actually does, and accelerates with tenacity... and plenty of room for the kids.

Japan wants to boost fuel-cell numbers 100x by 2020

How many hydrogen refueling stations will Japan need? Can each station handle 250 fuel-cell vehicles? They can in the Japanese government's new plans for hydrogen fuel-cell vehicle growth and station deployment throughout the country. With Prime Minister Shinzo Abe continuing to trumpet fuel cells as the advanced powertrain of the future, the government says the number of fuel-cell vehicle on its roads will multiply by 100 within the next four years, according to the Japan Times. Specifically, Japan, which is home to about 400 fuel-cell vehicles today, hopes to have 40,000 by 2020 and a whopping 800,000 by 2030. More importantly, Japan has 80 stations either in operation or slated to be deployed soon, and hopes to double that number by the end of the decade. For perspective's sake, the US has about two-dozen publicly accessible hydrogen fuel cell stations today, according to US Department of Energy. The newer ones are can dispense 100 kilogram a day, which can fuel 20-25 cars a day. Japanese automakers Honda and Toyota appear to be trying to do their parts in the H2 plan. Earlier this month, Honda started leasing its Clarity fuel-cell vehicle in Japan and is planning to bring them to California later in the year. The vehicle, which is priced at about $68,000 in Japan, is said to be able to travel about 466 miles on a full hydrogen tank, per the more lenient Japanese driving cycle (roughly 300 miles on the US scale). Honda will start production at a rate of 200 vehicles a year. With skin in the game, though, Honda indicated late last year that it was frustrated with what it said was the slow pace of fuel-cell station deployment in Japan, according to Bloomberg News. Honda was collaborating with hydrogen supply company Iwatani Corp. on what they called a "Smart Hydrogen Station," though that concept was in its testing phase as of last December. The Mirai also started sales in Japan and debuted in limited numbers in California last year. Last fall, Toyota set a rather lofty goal of selling 30,000 fuel-cell vehicles a year by 2020 as part of its Toyota Environmental Challenge 2050. Related Video: News Source: Japan TimesImage Credit: YOSHIKAZU TSUNO via Getty Images Green Honda Toyota Hydrogen Cars