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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

New Honda ads: Fix your airbags

As we've heard on many different occasions, one of the biggest problem with recalls is getting people to actually report to the dealership to have repairs done. This is particularly important in cases where the recalled part can cause some very serious harm. To combat this tendency – you might even call it neglectfulness – on the part of owners, Honda is turning to advertising. The company is launching a multi-million-dollar ad campaign targeting owners of vehicles affected by the Takata airbag recall and asking them to report in to have a replacement inflator installed. "Honda hopes that this new consumer information campaign will bolster our existing and continuing efforts to reach our customers and maximize the vehicle repair completion rates associated with recalls to replace Takata airbag inflators," Honda's John Mendel said in the attached statement. "These ads are a strong call to action from our company designed to break through the clutter, grab the attention of customers driving affected vehicles, and urge that they get required repairs as soon as possible." The campaign will kick off March 16 with full-page color ads in over 120 newspapers and 30-second radio spots in 110 markets. Because it's 2015, the company will also use sponsored Facebook posts "that mention the specific vehicle owned by each identified user." Yep, here's the future. Honda's ads will largely be focused in the 11 high-humidity states and territories (Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico and the US Virgin Islands) most affected by the Takata recall. Several of the states were part of the initial National Highway Traffic Safety Administration investigation, like Florida, Hawaii, the USVI and Puerto Rico. "The goals of this campaign is to save lives and prevent injuries," Mendel added. This campaign will be worth watching, not only because they deliver an important message, but they could set a precedent for the handling of future major recalls. Check out Honda's full press release, available below. New Honda Advertising Campaign Urges Owners to Take Immediate Action to Check for Open Recalls to Replace Takata Airbag Inflators Mar 12, 2015 - TORRANCE, CA.

2016 Honda HR-V scores class-leading 35 mpg

Smaller cars generally net better fuel economy ratings, and while crossovers aren't generally as efficient as hatchbacks and small sedans, smaller crossovers are getting better EPA ratings all the time. The latest to join the pack is the new 2016 Honda HR-V. The US Environmental Protection Agency has just released its ratings for the littlest Honda crossover, and the figures are pretty impressive. In front-wheel-drive form with the optional continuously variable transmission, the HR-V is rated at 28 miles per gallon in the city, 35 on the highway and 31 combined. Those figures make it the most economical conventionally powered SUV on the market. (The EPA doesn't distinguish between truck-based sport-utes and car-based crossovers) Among crossovers, the FWD HR-V outperforms the Nissan Juke, Kia Soul, Chevrolet Trax, Buick Encore... the whole lot. Only the Mazda CX-5 matches it on the highway rating, which is noteworthy since it's a much bigger vehicle. Along with the forthcoming Fiat 500X and Jeep Renegade, Mazda's nearly here CX-3 hasn't been rated yet (we predict it will score better than the HR-V, if only to improve on the fuel economy ratings of its larger CX-5 counterpart). Of course, there are hybrids that get better ratings than the Honda, but comparing a hybrid to a conventional vehicle is like comparing apples to electrically charged oranges. Naturally, the picture changes a bit if you go for all-wheel drive or the available six-speed manual. In AWD spec (only available with the CVT), the HR-V gets 27 city, 32 highway and 29 combined. The front-driver with the six-speed suffers a worse fate at 25 city, 34 highway and 28 combined. No matter which way you slice it, of course, the Fit hatchback upon which the HR-V is based, with its CVT hooked up to a smaller engine and with less weight to motivate, still sips fuel more lightly than the HR-V. But as far as crossovers go, Honda's new HR-V is looking pretty frugal. Featured Gallery 2016 Honda HR-V View 25 Photos News Source: EPAImage Credit: Honda Green Honda Crossover honda hr-v